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/max05-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:20:14,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:20:14,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:20:14,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:20:14,964 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:20:14,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:20:14,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:20:14,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:20:14,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:20:14,986 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:20:14,987 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:20:14,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:20:14,989 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:20:14,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:20:14,994 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:20:14,995 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:20:14,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:20:14,997 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:20:14,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:20:15,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:20:15,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:20:15,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:20:15,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:20:15,015 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:20:15,017 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 23:20:15,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:20:15,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:20:15,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:20:15,030 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 [2019-10-13 23:20:15,065 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:20:15,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:20:15,067 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:20:15,067 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:20:15,070 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:20:15,071 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:20:15,071 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:20:15,071 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:20:15,071 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:20:15,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:20:15,072 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:20:15,072 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:20:15,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:20:15,072 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:20:15,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:20:15,072 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:20:15,073 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:20:15,073 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:20:15,073 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:20:15,075 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:20:15,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:20:15,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:20:15,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:20:15,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:20:15,076 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:20:15,077 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:20:15,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:20:15,077 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:20:15,077 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 [2019-10-13 23:20:15,351 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:20:15,368 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:20:15,372 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:20:15,374 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:20:15,374 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:20:15,375 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/max05-1.i [2019-10-13 23:20:15,451 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c61c5ee1b/9e7b36e9d9a54dcd8ed71f410917a178/FLAG777c5a163 [2019-10-13 23:20:15,954 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:20:15,955 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/max05-1.i [2019-10-13 23:20:15,961 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c61c5ee1b/9e7b36e9d9a54dcd8ed71f410917a178/FLAG777c5a163 [2019-10-13 23:20:16,378 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c61c5ee1b/9e7b36e9d9a54dcd8ed71f410917a178 [2019-10-13 23:20:16,391 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:20:16,393 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:20:16,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:20:16,397 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:20:16,401 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:20:16,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:20:16" (1/1) ... [2019-10-13 23:20:16,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@517e93e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:16, skipping insertion in model container [2019-10-13 23:20:16,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:20:16" (1/1) ... [2019-10-13 23:20:16,415 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:20:16,440 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:20:16,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:20:16,662 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:20:16,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:20:16,701 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:20:16,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:16 WrapperNode [2019-10-13 23:20:16,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:20:16,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:20:16,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:20:16,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:20:16,801 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:16" (1/1) ... [2019-10-13 23:20:16,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:16" (1/1) ... [2019-10-13 23:20:16,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:16" (1/1) ... [2019-10-13 23:20:16,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:16" (1/1) ... [2019-10-13 23:20:16,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:16" (1/1) ... [2019-10-13 23:20:16,832 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:16" (1/1) ... [2019-10-13 23:20:16,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:16" (1/1) ... [2019-10-13 23:20:16,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:20:16,837 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:20:16,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:20:16,838 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:20:16,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:16" (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 [2019-10-13 23:20:16,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:20:16,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:20:16,897 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2019-10-13 23:20:16,897 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:20:16,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:20:16,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:20:16,898 INFO L130 BoogieDeclarations]: Found specification of procedure max [2019-10-13 23:20:16,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:20:16,898 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:20:16,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:20:16,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:20:16,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:20:16,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:20:16,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:20:17,289 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:20:17,289 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-13 23:20:17,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:20:17 BoogieIcfgContainer [2019-10-13 23:20:17,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:20:17,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:20:17,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:20:17,295 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:20:17,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:20:16" (1/3) ... [2019-10-13 23:20:17,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e067dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:20:17, skipping insertion in model container [2019-10-13 23:20:17,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:16" (2/3) ... [2019-10-13 23:20:17,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e067dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:20:17, skipping insertion in model container [2019-10-13 23:20:17,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:20:17" (3/3) ... [2019-10-13 23:20:17,299 INFO L109 eAbstractionObserver]: Analyzing ICFG max05-1.i [2019-10-13 23:20:17,308 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:20:17,316 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:20:17,327 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:20:17,348 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:20:17,348 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:20:17,348 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:20:17,349 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:20:17,349 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:20:17,349 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:20:17,349 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:20:17,349 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:20:17,365 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-10-13 23:20:17,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-13 23:20:17,371 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:17,372 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:20:17,374 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:17,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:17,378 INFO L82 PathProgramCache]: Analyzing trace with hash 855740909, now seen corresponding path program 1 times [2019-10-13 23:20:17,385 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:17,386 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808932] [2019-10-13 23:20:17,386 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:17,386 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:17,386 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:17,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:17,559 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 23:20:17,560 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808932] [2019-10-13 23:20:17,561 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:20:17,562 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:20:17,562 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118078870] [2019-10-13 23:20:17,568 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:20:17,568 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:20:17,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:20:17,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:20:17,582 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2019-10-13 23:20:17,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:20:17,618 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2019-10-13 23:20:17,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:20:17,621 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-10-13 23:20:17,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:20:17,629 INFO L225 Difference]: With dead ends: 41 [2019-10-13 23:20:17,630 INFO L226 Difference]: Without dead ends: 20 [2019-10-13 23:20:17,633 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 [2019-10-13 23:20:17,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-13 23:20:17,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-13 23:20:17,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-13 23:20:17,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2019-10-13 23:20:17,669 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 24 [2019-10-13 23:20:17,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:20:17,669 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-10-13 23:20:17,669 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:20:17,670 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2019-10-13 23:20:17,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-13 23:20:17,672 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:17,672 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:20:17,672 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:17,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:17,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1075349738, now seen corresponding path program 1 times [2019-10-13 23:20:17,673 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:17,673 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823185457] [2019-10-13 23:20:17,674 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:17,674 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:17,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:17,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:17,754 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 23:20:17,755 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823185457] [2019-10-13 23:20:17,756 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541358064] [2019-10-13 23:20:17,757 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 [2019-10-13 23:20:17,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:17,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 23:20:17,889 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:20:17,930 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 23:20:17,931 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:20:17,966 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 23:20:17,966 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:20:17,967 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2019-10-13 23:20:17,967 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444770874] [2019-10-13 23:20:17,969 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:20:17,969 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:20:17,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:20:17,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:20:17,970 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 3 states. [2019-10-13 23:20:17,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:20:17,982 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2019-10-13 23:20:17,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:20:17,983 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-10-13 23:20:17,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:20:17,984 INFO L225 Difference]: With dead ends: 33 [2019-10-13 23:20:17,984 INFO L226 Difference]: Without dead ends: 21 [2019-10-13 23:20:17,985 INFO L600 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 [2019-10-13 23:20:17,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-13 23:20:17,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-10-13 23:20:17,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-13 23:20:17,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-10-13 23:20:17,992 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 25 [2019-10-13 23:20:17,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:20:17,992 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-10-13 23:20:17,992 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:20:17,992 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-10-13 23:20:17,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-13 23:20:17,993 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:17,994 INFO L380 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] [2019-10-13 23:20:18,206 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:20:18,207 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:18,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:18,207 INFO L82 PathProgramCache]: Analyzing trace with hash 447698074, now seen corresponding path program 1 times [2019-10-13 23:20:18,209 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:18,209 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864049059] [2019-10-13 23:20:18,210 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:18,210 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:18,210 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:18,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:18,342 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 23:20:18,343 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864049059] [2019-10-13 23:20:18,344 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:20:18,344 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:20:18,344 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899893751] [2019-10-13 23:20:18,345 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:20:18,345 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:20:18,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:20:18,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:20:18,346 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 3 states. [2019-10-13 23:20:18,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:20:18,363 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2019-10-13 23:20:18,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:20:18,365 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2019-10-13 23:20:18,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:20:18,366 INFO L225 Difference]: With dead ends: 31 [2019-10-13 23:20:18,366 INFO L226 Difference]: Without dead ends: 22 [2019-10-13 23:20:18,367 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 [2019-10-13 23:20:18,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-13 23:20:18,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-10-13 23:20:18,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-13 23:20:18,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2019-10-13 23:20:18,373 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 28 [2019-10-13 23:20:18,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:20:18,375 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-10-13 23:20:18,376 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:20:18,376 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-10-13 23:20:18,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-13 23:20:18,377 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:18,377 INFO L380 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] [2019-10-13 23:20:18,378 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:18,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:18,378 INFO L82 PathProgramCache]: Analyzing trace with hash -69054062, now seen corresponding path program 1 times [2019-10-13 23:20:18,380 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:18,381 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588636706] [2019-10-13 23:20:18,381 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:18,381 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:18,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:18,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:18,478 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 23:20:18,478 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588636706] [2019-10-13 23:20:18,479 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783253471] [2019-10-13 23:20:18,479 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 [2019-10-13 23:20:18,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:18,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:20:18,576 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:20:18,596 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 23:20:18,597 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:20:18,639 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 23:20:18,639 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1873508793] [2019-10-13 23:20:18,664 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-13 23:20:18,665 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:20:18,670 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:20:18,677 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:20:18,678 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:20:18,823 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 23:20:20,821 INFO L199 IcfgInterpreter]: Interpreting procedure max with input of size 1 for LOIs [2019-10-13 23:20:20,856 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 23:20:20,861 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 23:20:20,861 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 23:20:20,862 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 238#(or (and (not (= main_~ret~1 main_~ret2~0)) (exists ((v_prenex_29 Int) (v_prenex_30 Int) (v_max_~ret~0_BEFORE_RETURN_5 Int) (v_max_~ret~0_BEFORE_RETURN_6 Int)) (or (and (= main_~ret5~0 (mod v_max_~ret~0_BEFORE_RETURN_6 4294967296)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 16))) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (< main_~i~2 4)) (<= (mod v_max_~ret~0_BEFORE_RETURN_6 4294967296) 2147483647)) (and (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 16))) (= (+ (mod v_prenex_30 4294967296) (- 4294967296)) main_~ret5~0) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (<= (mod v_prenex_30 4294967296) 2147483647)) (not (< main_~i~2 4))) (and (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 16))) (<= (mod v_max_~ret~0_BEFORE_RETURN_5 4294967296) 2147483647) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (mod v_max_~ret~0_BEFORE_RETURN_5 4294967296) main_~ret5~0) (not (< main_~i~2 4))) (and (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 16))) (not (<= (mod v_prenex_29 4294967296) 2147483647)) (= main_~ret5~0 (+ (mod v_prenex_29 4294967296) (- 4294967296))) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (< main_~i~2 4)))))) (and (exists ((v_prenex_29 Int) (v_prenex_30 Int) (v_max_~ret~0_BEFORE_RETURN_5 Int) (v_max_~ret~0_BEFORE_RETURN_6 Int)) (or (and (= main_~ret5~0 (mod v_max_~ret~0_BEFORE_RETURN_6 4294967296)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 16))) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (< main_~i~2 4)) (<= (mod v_max_~ret~0_BEFORE_RETURN_6 4294967296) 2147483647)) (and (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 16))) (= (+ (mod v_prenex_30 4294967296) (- 4294967296)) main_~ret5~0) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (<= (mod v_prenex_30 4294967296) 2147483647)) (not (< main_~i~2 4))) (and (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 16))) (<= (mod v_max_~ret~0_BEFORE_RETURN_5 4294967296) 2147483647) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (mod v_max_~ret~0_BEFORE_RETURN_5 4294967296) main_~ret5~0) (not (< main_~i~2 4))) (and (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 16))) (not (<= (mod v_prenex_29 4294967296) 2147483647)) (= main_~ret5~0 (+ (mod v_prenex_29 4294967296) (- 4294967296))) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (< main_~i~2 4))))) (not (= main_~ret~1 main_~ret5~0)))) [2019-10-13 23:20:20,862 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 656#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 23:20:20,862 INFO L193 IcfgInterpreter]: Reachable states at location maxEXIT satisfy 652#(and (not (< max_~i~0 5)) (<= 0 max_~i~0) (<= 5 max_~i~0) (= (ite (<= (mod max_~ret~0 4294967296) 2147483647) (mod max_~ret~0 4294967296) (+ (mod max_~ret~0 4294967296) (- 4294967296))) |max_#res|)) [2019-10-13 23:20:20,862 INFO L193 IcfgInterpreter]: Reachable states at location L36-1 satisfy 483#true [2019-10-13 23:20:20,863 INFO L193 IcfgInterpreter]: Reachable states at location L36 satisfy 526#(and (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 16))) (<= 4 main_~i~2) (not (< main_~i~2 4))) [2019-10-13 23:20:20,863 INFO L193 IcfgInterpreter]: Reachable states at location L9-3 satisfy 647#(<= 0 max_~i~0) [2019-10-13 23:20:20,863 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 23:20:20,863 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 23:20:20,864 INFO L193 IcfgInterpreter]: Reachable states at location L27 satisfy 124#(or (exists ((v_prenex_2 Int) (v_max_~ret~0_BEFORE_RETURN_2 Int)) (or (and (not (<= (mod v_prenex_2 4294967296) 2147483647)) (= (+ (mod v_prenex_2 4294967296) (- 4294967296)) |main_#t~ret6|) (not (< main_~i~1 5))) (and (<= (mod v_max_~ret~0_BEFORE_RETURN_2 4294967296) 2147483647) (not (< main_~i~1 5)) (= (mod v_max_~ret~0_BEFORE_RETURN_2 4294967296) |main_#t~ret6|)))) (exists ((v_max_~ret~0_BEFORE_RETURN_1 Int) (v_prenex_1 Int)) (or (and (<= (mod v_max_~ret~0_BEFORE_RETURN_1 4294967296) 2147483647) (not (< main_~i~1 5)) (= |main_#t~ret6| (mod v_max_~ret~0_BEFORE_RETURN_1 4294967296))) (and (= (+ (mod v_prenex_1 4294967296) (- 4294967296)) |main_#t~ret6|) (not (< main_~i~1 5)) (not (<= (mod v_prenex_1 4294967296) 2147483647)))))) [2019-10-13 23:20:20,864 INFO L193 IcfgInterpreter]: Reachable states at location L38 satisfy 384#true [2019-10-13 23:20:20,864 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 661#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 23:20:20,864 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 23:20:20,864 INFO L193 IcfgInterpreter]: Reachable states at location L39 satisfy 317#true [2019-10-13 23:20:20,865 INFO L193 IcfgInterpreter]: Reachable states at location maxENTRY satisfy 605#true [2019-10-13 23:20:20,865 INFO L193 IcfgInterpreter]: Reachable states at location L30-1 satisfy 591#true [2019-10-13 23:20:20,865 INFO L193 IcfgInterpreter]: Reachable states at location L32-3 satisfy 564#true [2019-10-13 23:20:20,865 INFO L193 IcfgInterpreter]: Reachable states at location L23-4 satisfy 73#(and (not (< main_~i~1 5)) (<= 5 main_~i~1)) [2019-10-13 23:20:20,866 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 596#(exists ((v_prenex_2 Int) (v_max_~ret~0_BEFORE_RETURN_1 Int) (v_max_~ret~0_BEFORE_RETURN_2 Int) (v_prenex_1 Int)) (or (and (<= main_~ret~1 2147483647) (not (< main_~i~1 5)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (= main_~ret~1 (+ (mod v_prenex_1 4294967296) (- 4294967296))) (not (<= (mod v_prenex_1 4294967296) 2147483647)) (<= 0 (+ main_~ret~1 2147483648))) (and (not (<= (mod v_prenex_2 4294967296) 2147483647)) (<= main_~ret~1 2147483647) (not (< main_~i~1 5)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (= (+ (mod v_prenex_2 4294967296) (- 4294967296)) main_~ret~1) (<= 0 (+ main_~ret~1 2147483648))) (and (<= (mod v_max_~ret~0_BEFORE_RETURN_1 4294967296) 2147483647) (<= main_~ret~1 2147483647) (= main_~ret~1 (mod v_max_~ret~0_BEFORE_RETURN_1 4294967296)) (not (< main_~i~1 5)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= 0 (+ main_~ret~1 2147483648))) (and (<= (mod v_max_~ret~0_BEFORE_RETURN_2 4294967296) 2147483647) (<= main_~ret~1 2147483647) (not (< main_~i~1 5)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (= (mod v_max_~ret~0_BEFORE_RETURN_2 4294967296) main_~ret~1) (<= 0 (+ main_~ret~1 2147483648))))) [2019-10-13 23:20:20,866 INFO L193 IcfgInterpreter]: Reachable states at location L23-3 satisfy 68#true [2019-10-13 23:20:21,224 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 23:20:21,225 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 11] total 17 [2019-10-13 23:20:21,225 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434990420] [2019-10-13 23:20:21,227 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-13 23:20:21,227 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:20:21,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-13 23:20:21,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2019-10-13 23:20:21,230 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 18 states. [2019-10-13 23:20:21,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:20:21,892 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2019-10-13 23:20:21,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 23:20:21,892 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 29 [2019-10-13 23:20:21,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:20:21,893 INFO L225 Difference]: With dead ends: 40 [2019-10-13 23:20:21,893 INFO L226 Difference]: Without dead ends: 25 [2019-10-13 23:20:21,894 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=133, Invalid=737, Unknown=0, NotChecked=0, Total=870 [2019-10-13 23:20:21,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-13 23:20:21,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-10-13 23:20:21,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-13 23:20:21,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2019-10-13 23:20:21,901 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 29 [2019-10-13 23:20:21,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:20:21,901 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2019-10-13 23:20:21,902 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-13 23:20:21,902 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2019-10-13 23:20:21,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-13 23:20:21,903 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:21,903 INFO L380 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] [2019-10-13 23:20:22,107 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:20:22,107 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:22,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:22,108 INFO L82 PathProgramCache]: Analyzing trace with hash -493974743, now seen corresponding path program 2 times [2019-10-13 23:20:22,109 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:22,109 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967998610] [2019-10-13 23:20:22,110 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:22,110 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:22,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:22,238 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 23:20:22,239 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967998610] [2019-10-13 23:20:22,239 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970734777] [2019-10-13 23:20:22,239 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 [2019-10-13 23:20:22,326 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 23:20:22,326 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 23:20:22,327 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:20:22,330 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:20:22,351 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 23:20:22,351 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:20:22,381 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 23:20:22,382 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1240437327] [2019-10-13 23:20:22,383 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-13 23:20:22,383 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:20:22,384 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:20:22,386 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:20:22,387 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:20:22,424 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 23:20:23,804 INFO L199 IcfgInterpreter]: Interpreting procedure max with input of size 1 for LOIs [2019-10-13 23:20:23,836 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 23:20:23,840 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 23:20:23,840 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 23:20:23,841 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 238#(or (and (not (= main_~ret~1 main_~ret2~0)) (exists ((v_prenex_224 Int) (v_max_~ret~0_BEFORE_RETURN_32 Int) (v_max_~ret~0_BEFORE_RETURN_31 Int) (v_prenex_223 Int)) (or (and (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 16))) (= main_~ret5~0 (+ (mod v_max_~ret~0_BEFORE_RETURN_31 4294967296) (- 4294967296))) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_31 4294967296) 2147483647)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (< main_~i~2 4))) (and (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 16))) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_prenex_224 4294967296) 2147483647) (= main_~ret5~0 (mod v_prenex_224 4294967296)) (not (< main_~i~2 4))) (and (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 16))) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (< main_~i~2 4)) (<= (mod v_prenex_223 4294967296) 2147483647) (= (mod v_prenex_223 4294967296) main_~ret5~0)) (and (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 16))) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_32 4294967296) 2147483647)) (= (+ (mod v_max_~ret~0_BEFORE_RETURN_32 4294967296) (- 4294967296)) main_~ret5~0) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (< main_~i~2 4)))))) (and (exists ((v_prenex_224 Int) (v_max_~ret~0_BEFORE_RETURN_32 Int) (v_max_~ret~0_BEFORE_RETURN_31 Int) (v_prenex_223 Int)) (or (and (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 16))) (= main_~ret5~0 (+ (mod v_max_~ret~0_BEFORE_RETURN_31 4294967296) (- 4294967296))) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_31 4294967296) 2147483647)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (< main_~i~2 4))) (and (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 16))) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_prenex_224 4294967296) 2147483647) (= main_~ret5~0 (mod v_prenex_224 4294967296)) (not (< main_~i~2 4))) (and (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 16))) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (< main_~i~2 4)) (<= (mod v_prenex_223 4294967296) 2147483647) (= (mod v_prenex_223 4294967296) main_~ret5~0)) (and (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 16))) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_32 4294967296) 2147483647)) (= (+ (mod v_max_~ret~0_BEFORE_RETURN_32 4294967296) (- 4294967296)) main_~ret5~0) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (< main_~i~2 4))))) (not (= main_~ret~1 main_~ret5~0)))) [2019-10-13 23:20:23,841 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 656#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 23:20:23,841 INFO L193 IcfgInterpreter]: Reachable states at location maxEXIT satisfy 652#(and (not (< max_~i~0 5)) (<= 0 max_~i~0) (<= 5 max_~i~0) (= (ite (<= (mod max_~ret~0 4294967296) 2147483647) (mod max_~ret~0 4294967296) (+ (mod max_~ret~0 4294967296) (- 4294967296))) |max_#res|)) [2019-10-13 23:20:23,842 INFO L193 IcfgInterpreter]: Reachable states at location L36-1 satisfy 483#true [2019-10-13 23:20:23,842 INFO L193 IcfgInterpreter]: Reachable states at location L36 satisfy 526#(and (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 16))) (<= 4 main_~i~2) (not (< main_~i~2 4))) [2019-10-13 23:20:23,842 INFO L193 IcfgInterpreter]: Reachable states at location L9-3 satisfy 647#(<= 0 max_~i~0) [2019-10-13 23:20:23,842 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 23:20:23,842 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 23:20:23,843 INFO L193 IcfgInterpreter]: Reachable states at location L27 satisfy 124#(or (exists ((v_prenex_196 Int) (v_max_~ret~0_BEFORE_RETURN_28 Int)) (or (and (not (<= (mod v_prenex_196 4294967296) 2147483647)) (= (+ (mod v_prenex_196 4294967296) (- 4294967296)) |main_#t~ret6|) (not (< main_~i~1 5))) (and (<= (mod v_max_~ret~0_BEFORE_RETURN_28 4294967296) 2147483647) (not (< main_~i~1 5)) (= |main_#t~ret6| (mod v_max_~ret~0_BEFORE_RETURN_28 4294967296))))) (exists ((v_prenex_195 Int) (v_max_~ret~0_BEFORE_RETURN_27 Int)) (or (and (= (mod v_prenex_195 4294967296) |main_#t~ret6|) (not (< main_~i~1 5)) (<= (mod v_prenex_195 4294967296) 2147483647)) (and (not (<= (mod v_max_~ret~0_BEFORE_RETURN_27 4294967296) 2147483647)) (not (< main_~i~1 5)) (= (+ (mod v_max_~ret~0_BEFORE_RETURN_27 4294967296) (- 4294967296)) |main_#t~ret6|))))) [2019-10-13 23:20:23,843 INFO L193 IcfgInterpreter]: Reachable states at location L38 satisfy 384#true [2019-10-13 23:20:23,843 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 661#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 23:20:23,843 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 23:20:23,844 INFO L193 IcfgInterpreter]: Reachable states at location L39 satisfy 317#true [2019-10-13 23:20:23,844 INFO L193 IcfgInterpreter]: Reachable states at location maxENTRY satisfy 605#true [2019-10-13 23:20:23,844 INFO L193 IcfgInterpreter]: Reachable states at location L30-1 satisfy 591#true [2019-10-13 23:20:23,844 INFO L193 IcfgInterpreter]: Reachable states at location L32-3 satisfy 564#true [2019-10-13 23:20:23,844 INFO L193 IcfgInterpreter]: Reachable states at location L23-4 satisfy 73#(and (not (< main_~i~1 5)) (<= 5 main_~i~1)) [2019-10-13 23:20:23,845 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 596#(exists ((v_prenex_196 Int) (v_prenex_195 Int) (v_max_~ret~0_BEFORE_RETURN_28 Int) (v_max_~ret~0_BEFORE_RETURN_27 Int)) (or (and (<= main_~ret~1 2147483647) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_27 4294967296) 2147483647)) (= (+ (mod v_max_~ret~0_BEFORE_RETURN_27 4294967296) (- 4294967296)) main_~ret~1) (not (< main_~i~1 5)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= 0 (+ main_~ret~1 2147483648))) (and (= (+ (mod v_prenex_196 4294967296) (- 4294967296)) main_~ret~1) (not (<= (mod v_prenex_196 4294967296) 2147483647)) (<= main_~ret~1 2147483647) (not (< main_~i~1 5)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (not (< main_~i~1 5)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (= (mod v_prenex_195 4294967296) main_~ret~1) (<= (mod v_prenex_195 4294967296) 2147483647) (<= 0 (+ main_~ret~1 2147483648))) (and (= main_~ret~1 (mod v_max_~ret~0_BEFORE_RETURN_28 4294967296)) (<= main_~ret~1 2147483647) (<= (mod v_max_~ret~0_BEFORE_RETURN_28 4294967296) 2147483647) (not (< main_~i~1 5)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= 0 (+ main_~ret~1 2147483648))))) [2019-10-13 23:20:23,845 INFO L193 IcfgInterpreter]: Reachable states at location L23-3 satisfy 68#true [2019-10-13 23:20:24,231 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 23:20:24,231 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4, 11] total 21 [2019-10-13 23:20:24,231 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354141402] [2019-10-13 23:20:24,233 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-10-13 23:20:24,234 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:20:24,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-10-13 23:20:24,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2019-10-13 23:20:24,234 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 22 states. [2019-10-13 23:20:25,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:20:25,150 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2019-10-13 23:20:25,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 23:20:25,150 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 32 [2019-10-13 23:20:25,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:20:25,151 INFO L225 Difference]: With dead ends: 44 [2019-10-13 23:20:25,152 INFO L226 Difference]: Without dead ends: 29 [2019-10-13 23:20:25,153 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=210, Invalid=1272, Unknown=0, NotChecked=0, Total=1482 [2019-10-13 23:20:25,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-13 23:20:25,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-10-13 23:20:25,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-13 23:20:25,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2019-10-13 23:20:25,160 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 32 [2019-10-13 23:20:25,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:20:25,161 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2019-10-13 23:20:25,161 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-10-13 23:20:25,161 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2019-10-13 23:20:25,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-13 23:20:25,162 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:25,162 INFO L380 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] [2019-10-13 23:20:25,367 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:20:25,367 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:25,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:25,367 INFO L82 PathProgramCache]: Analyzing trace with hash 132820922, now seen corresponding path program 3 times [2019-10-13 23:20:25,368 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:25,368 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781066597] [2019-10-13 23:20:25,368 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:25,369 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:25,369 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:25,522 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-13 23:20:25,523 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781066597] [2019-10-13 23:20:25,523 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5117579] [2019-10-13 23:20:25,523 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 [2019-10-13 23:20:25,646 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 23:20:25,646 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 23:20:25,647 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 23:20:25,664 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:20:25,678 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-13 23:20:25,678 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:20:25,723 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-13 23:20:25,724 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [291591007] [2019-10-13 23:20:25,727 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-13 23:20:25,728 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:20:25,728 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:20:25,729 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:20:25,729 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:20:25,752 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 23:20:27,096 INFO L199 IcfgInterpreter]: Interpreting procedure max with input of size 1 for LOIs [2019-10-13 23:20:27,122 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 23:20:27,125 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 23:20:27,125 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 23:20:27,125 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 238#(or (and (exists ((v_max_~ret~0_BEFORE_RETURN_57 Int) (v_prenex_417 Int) (v_prenex_418 Int) (v_max_~ret~0_BEFORE_RETURN_58 Int)) (or (and (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 16))) (= main_~ret5~0 (+ (mod v_prenex_417 4294967296) (- 4294967296))) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (<= (mod v_prenex_417 4294967296) 2147483647)) (not (< main_~i~2 4))) (and (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 16))) (= main_~ret5~0 (mod v_prenex_418 4294967296)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_prenex_418 4294967296) 2147483647) (not (< main_~i~2 4))) (and (<= (mod v_max_~ret~0_BEFORE_RETURN_57 4294967296) 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 16))) (= (mod v_max_~ret~0_BEFORE_RETURN_57 4294967296) main_~ret5~0) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (< main_~i~2 4))) (and (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 16))) (= (+ (mod v_max_~ret~0_BEFORE_RETURN_58 4294967296) (- 4294967296)) main_~ret5~0) (<= main_~ret5~0 2147483647) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_58 4294967296) 2147483647)) (<= 0 (+ main_~ret5~0 2147483648)) (not (< main_~i~2 4))))) (not (= main_~ret~1 main_~ret5~0))) (and (not (= main_~ret~1 main_~ret2~0)) (exists ((v_max_~ret~0_BEFORE_RETURN_57 Int) (v_prenex_417 Int) (v_prenex_418 Int) (v_max_~ret~0_BEFORE_RETURN_58 Int)) (or (and (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 16))) (= main_~ret5~0 (+ (mod v_prenex_417 4294967296) (- 4294967296))) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (<= (mod v_prenex_417 4294967296) 2147483647)) (not (< main_~i~2 4))) (and (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 16))) (= main_~ret5~0 (mod v_prenex_418 4294967296)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_prenex_418 4294967296) 2147483647) (not (< main_~i~2 4))) (and (<= (mod v_max_~ret~0_BEFORE_RETURN_57 4294967296) 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 16))) (= (mod v_max_~ret~0_BEFORE_RETURN_57 4294967296) main_~ret5~0) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (< main_~i~2 4))) (and (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 16))) (= (+ (mod v_max_~ret~0_BEFORE_RETURN_58 4294967296) (- 4294967296)) main_~ret5~0) (<= main_~ret5~0 2147483647) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_58 4294967296) 2147483647)) (<= 0 (+ main_~ret5~0 2147483648)) (not (< main_~i~2 4))))))) [2019-10-13 23:20:27,126 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 656#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 23:20:27,126 INFO L193 IcfgInterpreter]: Reachable states at location maxEXIT satisfy 652#(and (not (< max_~i~0 5)) (<= 0 max_~i~0) (<= 5 max_~i~0) (= (ite (<= (mod max_~ret~0 4294967296) 2147483647) (mod max_~ret~0 4294967296) (+ (mod max_~ret~0 4294967296) (- 4294967296))) |max_#res|)) [2019-10-13 23:20:27,126 INFO L193 IcfgInterpreter]: Reachable states at location L36-1 satisfy 483#true [2019-10-13 23:20:27,126 INFO L193 IcfgInterpreter]: Reachable states at location L36 satisfy 526#(and (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 16))) (<= 4 main_~i~2) (not (< main_~i~2 4))) [2019-10-13 23:20:27,126 INFO L193 IcfgInterpreter]: Reachable states at location L9-3 satisfy 647#(<= 0 max_~i~0) [2019-10-13 23:20:27,126 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 23:20:27,127 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 23:20:27,127 INFO L193 IcfgInterpreter]: Reachable states at location L27 satisfy 124#(or (exists ((v_max_~ret~0_BEFORE_RETURN_54 Int) (v_prenex_390 Int)) (or (and (not (< main_~i~1 5)) (= |main_#t~ret6| (mod v_max_~ret~0_BEFORE_RETURN_54 4294967296)) (<= (mod v_max_~ret~0_BEFORE_RETURN_54 4294967296) 2147483647)) (and (= (+ (mod v_prenex_390 4294967296) (- 4294967296)) |main_#t~ret6|) (not (< main_~i~1 5)) (not (<= (mod v_prenex_390 4294967296) 2147483647))))) (exists ((v_prenex_389 Int) (v_max_~ret~0_BEFORE_RETURN_53 Int)) (or (and (not (< main_~i~1 5)) (<= (mod v_prenex_389 4294967296) 2147483647) (= |main_#t~ret6| (mod v_prenex_389 4294967296))) (and (= (+ (mod v_max_~ret~0_BEFORE_RETURN_53 4294967296) (- 4294967296)) |main_#t~ret6|) (not (< main_~i~1 5)) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_53 4294967296) 2147483647)))))) [2019-10-13 23:20:27,127 INFO L193 IcfgInterpreter]: Reachable states at location L38 satisfy 384#true [2019-10-13 23:20:27,127 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 661#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 23:20:27,127 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 23:20:27,128 INFO L193 IcfgInterpreter]: Reachable states at location L39 satisfy 317#true [2019-10-13 23:20:27,128 INFO L193 IcfgInterpreter]: Reachable states at location maxENTRY satisfy 605#true [2019-10-13 23:20:27,128 INFO L193 IcfgInterpreter]: Reachable states at location L30-1 satisfy 591#true [2019-10-13 23:20:27,128 INFO L193 IcfgInterpreter]: Reachable states at location L32-3 satisfy 564#true [2019-10-13 23:20:27,128 INFO L193 IcfgInterpreter]: Reachable states at location L23-4 satisfy 73#(and (not (< main_~i~1 5)) (<= 5 main_~i~1)) [2019-10-13 23:20:27,128 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 596#(exists ((v_prenex_389 Int) (v_max_~ret~0_BEFORE_RETURN_54 Int) (v_max_~ret~0_BEFORE_RETURN_53 Int) (v_prenex_390 Int)) (or (and (<= main_~ret~1 2147483647) (not (< main_~i~1 5)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (= main_~ret~1 (mod v_max_~ret~0_BEFORE_RETURN_54 4294967296)) (<= (mod v_max_~ret~0_BEFORE_RETURN_54 4294967296) 2147483647) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (= (+ (mod v_prenex_390 4294967296) (- 4294967296)) main_~ret~1) (not (< main_~i~1 5)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (<= (mod v_prenex_390 4294967296) 2147483647)) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (= (mod v_prenex_389 4294967296) main_~ret~1) (not (< main_~i~1 5)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= (mod v_prenex_389 4294967296) 2147483647) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (not (< main_~i~1 5)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (= main_~ret~1 (+ (mod v_max_~ret~0_BEFORE_RETURN_53 4294967296) (- 4294967296))) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_53 4294967296) 2147483647)) (<= 0 (+ main_~ret~1 2147483648))))) [2019-10-13 23:20:27,129 INFO L193 IcfgInterpreter]: Reachable states at location L23-3 satisfy 68#true [2019-10-13 23:20:27,450 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 23:20:27,451 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 11] total 18 [2019-10-13 23:20:27,451 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827235484] [2019-10-13 23:20:27,452 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-13 23:20:27,452 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:20:27,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-13 23:20:27,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2019-10-13 23:20:27,453 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 19 states. [2019-10-13 23:20:28,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:20:28,909 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2019-10-13 23:20:28,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-13 23:20:28,909 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 42 [2019-10-13 23:20:28,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:20:28,910 INFO L225 Difference]: With dead ends: 47 [2019-10-13 23:20:28,910 INFO L226 Difference]: Without dead ends: 30 [2019-10-13 23:20:28,911 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 110 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=183, Invalid=809, Unknown=0, NotChecked=0, Total=992 [2019-10-13 23:20:28,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-10-13 23:20:28,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-10-13 23:20:28,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-13 23:20:28,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2019-10-13 23:20:28,918 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 42 [2019-10-13 23:20:28,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:20:28,918 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2019-10-13 23:20:28,919 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-10-13 23:20:28,919 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2019-10-13 23:20:28,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-13 23:20:28,920 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:28,920 INFO L380 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] [2019-10-13 23:20:29,124 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:20:29,125 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:29,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:29,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1289972562, now seen corresponding path program 4 times [2019-10-13 23:20:29,126 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:29,126 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283312239] [2019-10-13 23:20:29,126 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:29,127 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:29,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:29,226 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2019-10-13 23:20:29,226 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283312239] [2019-10-13 23:20:29,226 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372054912] [2019-10-13 23:20:29,227 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 [2019-10-13 23:20:29,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:29,351 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:20:29,355 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:20:29,364 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 76 proven. 1 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2019-10-13 23:20:29,365 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:20:29,384 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2019-10-13 23:20:29,385 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [812656395] [2019-10-13 23:20:29,386 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-13 23:20:29,387 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:20:29,387 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:20:29,387 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:20:29,388 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:20:29,403 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 23:20:30,612 INFO L199 IcfgInterpreter]: Interpreting procedure max with input of size 1 for LOIs [2019-10-13 23:20:30,635 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 23:20:30,639 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 23:20:30,639 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 23:20:30,640 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 238#(or (and (not (= main_~ret~1 main_~ret2~0)) (exists ((v_prenex_611 Int) (v_prenex_612 Int) (v_max_~ret~0_BEFORE_RETURN_84 Int) (v_max_~ret~0_BEFORE_RETURN_83 Int)) (or (and (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 16))) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_max_~ret~0_BEFORE_RETURN_84 4294967296) 2147483647) (= main_~ret5~0 (mod v_max_~ret~0_BEFORE_RETURN_84 4294967296)) (not (< main_~i~2 4))) (and (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 16))) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_83 4294967296) 2147483647)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= main_~ret5~0 (+ (mod v_max_~ret~0_BEFORE_RETURN_83 4294967296) (- 4294967296))) (not (< main_~i~2 4))) (and (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 16))) (= (+ (mod v_prenex_612 4294967296) (- 4294967296)) main_~ret5~0) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (<= (mod v_prenex_612 4294967296) 2147483647)) (not (< main_~i~2 4))) (and (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 16))) (<= (mod v_prenex_611 4294967296) 2147483647) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= main_~ret5~0 (mod v_prenex_611 4294967296)) (not (< main_~i~2 4)))))) (and (exists ((v_prenex_611 Int) (v_prenex_612 Int) (v_max_~ret~0_BEFORE_RETURN_84 Int) (v_max_~ret~0_BEFORE_RETURN_83 Int)) (or (and (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 16))) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_max_~ret~0_BEFORE_RETURN_84 4294967296) 2147483647) (= main_~ret5~0 (mod v_max_~ret~0_BEFORE_RETURN_84 4294967296)) (not (< main_~i~2 4))) (and (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 16))) (not (<= (mod v_max_~ret~0_BEFORE_RETURN_83 4294967296) 2147483647)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= main_~ret5~0 (+ (mod v_max_~ret~0_BEFORE_RETURN_83 4294967296) (- 4294967296))) (not (< main_~i~2 4))) (and (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 16))) (= (+ (mod v_prenex_612 4294967296) (- 4294967296)) main_~ret5~0) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (<= (mod v_prenex_612 4294967296) 2147483647)) (not (< main_~i~2 4))) (and (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 16))) (<= (mod v_prenex_611 4294967296) 2147483647) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= main_~ret5~0 (mod v_prenex_611 4294967296)) (not (< main_~i~2 4))))) (not (= main_~ret~1 main_~ret5~0)))) [2019-10-13 23:20:30,640 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 656#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 23:20:30,640 INFO L193 IcfgInterpreter]: Reachable states at location maxEXIT satisfy 652#(and (not (< max_~i~0 5)) (<= 0 max_~i~0) (<= 5 max_~i~0) (= (ite (<= (mod max_~ret~0 4294967296) 2147483647) (mod max_~ret~0 4294967296) (+ (mod max_~ret~0 4294967296) (- 4294967296))) |max_#res|)) [2019-10-13 23:20:30,640 INFO L193 IcfgInterpreter]: Reachable states at location L36-1 satisfy 483#true [2019-10-13 23:20:30,640 INFO L193 IcfgInterpreter]: Reachable states at location L36 satisfy 526#(and (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 16))) (<= 4 main_~i~2) (not (< main_~i~2 4))) [2019-10-13 23:20:30,641 INFO L193 IcfgInterpreter]: Reachable states at location L9-3 satisfy 647#(<= 0 max_~i~0) [2019-10-13 23:20:30,641 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 23:20:30,641 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 23:20:30,641 INFO L193 IcfgInterpreter]: Reachable states at location L27 satisfy 124#(or (exists ((v_max_~ret~0_BEFORE_RETURN_79 Int) (v_prenex_583 Int)) (or (and (= (+ (mod v_prenex_583 4294967296) (- 4294967296)) |main_#t~ret6|) (not (< main_~i~1 5)) (not (<= (mod v_prenex_583 4294967296) 2147483647))) (and (<= (mod v_max_~ret~0_BEFORE_RETURN_79 4294967296) 2147483647) (= (mod v_max_~ret~0_BEFORE_RETURN_79 4294967296) |main_#t~ret6|) (not (< main_~i~1 5))))) (exists ((v_prenex_584 Int) (v_max_~ret~0_BEFORE_RETURN_80 Int)) (or (and (not (< main_~i~1 5)) (<= (mod v_max_~ret~0_BEFORE_RETURN_80 4294967296) 2147483647) (= (mod v_max_~ret~0_BEFORE_RETURN_80 4294967296) |main_#t~ret6|)) (and (= (+ (mod v_prenex_584 4294967296) (- 4294967296)) |main_#t~ret6|) (not (< main_~i~1 5)) (not (<= (mod v_prenex_584 4294967296) 2147483647)))))) [2019-10-13 23:20:30,641 INFO L193 IcfgInterpreter]: Reachable states at location L38 satisfy 384#true [2019-10-13 23:20:30,642 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 661#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 23:20:30,642 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 23:20:30,642 INFO L193 IcfgInterpreter]: Reachable states at location L39 satisfy 317#true [2019-10-13 23:20:30,642 INFO L193 IcfgInterpreter]: Reachable states at location maxENTRY satisfy 605#true [2019-10-13 23:20:30,642 INFO L193 IcfgInterpreter]: Reachable states at location L30-1 satisfy 591#true [2019-10-13 23:20:30,642 INFO L193 IcfgInterpreter]: Reachable states at location L32-3 satisfy 564#true [2019-10-13 23:20:30,643 INFO L193 IcfgInterpreter]: Reachable states at location L23-4 satisfy 73#(and (not (< main_~i~1 5)) (<= 5 main_~i~1)) [2019-10-13 23:20:30,643 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 596#(exists ((v_max_~ret~0_BEFORE_RETURN_79 Int) (v_prenex_583 Int) (v_prenex_584 Int) (v_max_~ret~0_BEFORE_RETURN_80 Int)) (or (and (<= main_~ret~1 2147483647) (= (+ (mod v_prenex_583 4294967296) (- 4294967296)) main_~ret~1) (not (< main_~i~1 5)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (<= (mod v_prenex_583 4294967296) 2147483647)) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (<= (mod v_max_~ret~0_BEFORE_RETURN_79 4294967296) 2147483647) (not (< main_~i~1 5)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (= (mod v_max_~ret~0_BEFORE_RETURN_79 4294967296) main_~ret~1) (<= 0 (+ main_~ret~1 2147483648))) (and (= (mod v_max_~ret~0_BEFORE_RETURN_80 4294967296) main_~ret~1) (<= main_~ret~1 2147483647) (not (< main_~i~1 5)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= (mod v_max_~ret~0_BEFORE_RETURN_80 4294967296) 2147483647) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (not (< main_~i~1 5)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (<= (mod v_prenex_584 4294967296) 2147483647)) (= main_~ret~1 (+ (mod v_prenex_584 4294967296) (- 4294967296))) (<= 0 (+ main_~ret~1 2147483648))))) [2019-10-13 23:20:30,643 INFO L193 IcfgInterpreter]: Reachable states at location L23-3 satisfy 68#true [2019-10-13 23:20:30,943 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 23:20:30,944 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 11] total 17 [2019-10-13 23:20:30,944 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111607860] [2019-10-13 23:20:30,945 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-13 23:20:30,945 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:20:30,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-13 23:20:30,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2019-10-13 23:20:30,946 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 18 states. [2019-10-13 23:20:33,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:20:33,599 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2019-10-13 23:20:33,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 23:20:33,600 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 45 [2019-10-13 23:20:33,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:20:33,601 INFO L225 Difference]: With dead ends: 46 [2019-10-13 23:20:33,602 INFO L226 Difference]: Without dead ends: 33 [2019-10-13 23:20:33,603 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=141, Invalid=729, Unknown=0, NotChecked=0, Total=870 [2019-10-13 23:20:33,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-10-13 23:20:33,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2019-10-13 23:20:33,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-13 23:20:33,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2019-10-13 23:20:33,610 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 45 [2019-10-13 23:20:33,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:20:33,611 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2019-10-13 23:20:33,611 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-13 23:20:33,611 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2019-10-13 23:20:33,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-10-13 23:20:33,612 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:33,612 INFO L380 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] [2019-10-13 23:20:33,815 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:20:33,816 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:33,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:33,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1303168550, now seen corresponding path program 5 times [2019-10-13 23:20:33,818 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:33,818 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975644986] [2019-10-13 23:20:33,818 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:33,818 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:33,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:43,699 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 22 [2019-10-13 23:20:43,913 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 26 [2019-10-13 23:20:44,249 WARN L191 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 36 [2019-10-13 23:20:44,547 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 33 [2019-10-13 23:20:45,409 WARN L191 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 28 [2019-10-13 23:20:46,907 WARN L191 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 253 DAG size of output: 49