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/eca-rers2012/Problem01_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:39:07,310 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:39:07,312 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:39:07,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-15 01:39:07,345 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:39:07,346 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:39:07,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:39:07,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:39:07,349 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:39:07,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:39:07,351 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:39:07,353 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:39:07,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:39:07,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:39:07,357 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:39:07,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:39:07,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:39:07,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:39:07,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:39:07,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:39:07,371 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:39:07,385 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:39:07,386 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:39:07,387 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:39:07,387 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:39:07,387 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:39:07,388 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:39:07,388 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:39:07,388 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:39:07,388 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:39:07,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:39:07,389 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:39:07,389 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:39:07,389 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:39:07,389 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:39:07,389 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:39:07,390 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:39:07,390 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:39:07,390 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:39:07,390 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:39:07,390 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:39:07,391 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:39:07,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:39:07,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:39:07,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:39:07,392 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:39:07,392 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:39:07,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:39:07,392 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:39:07,392 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 01:39:07,681 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:39:07,699 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:39:07,704 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:39:07,705 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:39:07,706 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:39:07,707 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label05.c [2019-10-15 01:39:07,780 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07a0fb45f/4c1d4aba58814a1da442e0e219799da4/FLAG572b1d884 [2019-10-15 01:39:08,343 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:39:08,344 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label05.c [2019-10-15 01:39:08,367 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07a0fb45f/4c1d4aba58814a1da442e0e219799da4/FLAG572b1d884 [2019-10-15 01:39:08,618 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07a0fb45f/4c1d4aba58814a1da442e0e219799da4 [2019-10-15 01:39:08,629 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:39:08,630 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:39:08,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:39:08,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:39:08,635 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:39:08,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:39:08" (1/1) ... [2019-10-15 01:39:08,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ac258e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:39:08, skipping insertion in model container [2019-10-15 01:39:08,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:39:08" (1/1) ... [2019-10-15 01:39:08,647 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:39:08,708 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:39:09,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:39:09,374 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:39:09,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:39:09,488 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:39:09,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:39:09 WrapperNode [2019-10-15 01:39:09,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:39:09,489 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:39:09,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:39:09,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:39:09,504 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:39:09" (1/1) ... [2019-10-15 01:39:09,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:39:09" (1/1) ... [2019-10-15 01:39:09,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:39:09" (1/1) ... [2019-10-15 01:39:09,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:39:09" (1/1) ... [2019-10-15 01:39:09,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:39:09" (1/1) ... [2019-10-15 01:39:09,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:39:09" (1/1) ... [2019-10-15 01:39:09,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:39:09" (1/1) ... [2019-10-15 01:39:09,599 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:39:09,600 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:39:09,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:39:09,600 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:39:09,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:39:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:39:09,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:39:09,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:39:09,678 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-15 01:39:09,678 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:39:09,678 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-15 01:39:09,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:39:09,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:39:09,680 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:39:09,681 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:39:09,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:39:09,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:39:11,713 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:39:11,713 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 01:39:11,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:39:11 BoogieIcfgContainer [2019-10-15 01:39:11,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:39:11,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:39:11,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:39:11,726 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:39:11,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:39:08" (1/3) ... [2019-10-15 01:39:11,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c22624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:39:11, skipping insertion in model container [2019-10-15 01:39:11,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:39:09" (2/3) ... [2019-10-15 01:39:11,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c22624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:39:11, skipping insertion in model container [2019-10-15 01:39:11,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:39:11" (3/3) ... [2019-10-15 01:39:11,734 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label05.c [2019-10-15 01:39:11,747 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:39:11,757 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:39:11,769 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:39:11,801 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:39:11,801 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:39:11,801 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:39:11,801 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:39:11,802 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:39:11,802 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:39:11,802 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:39:11,802 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:39:11,835 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2019-10-15 01:39:11,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-15 01:39:11,847 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:39:11,849 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:39:11,851 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:39:11,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:39:11,858 INFO L82 PathProgramCache]: Analyzing trace with hash 826816868, now seen corresponding path program 1 times [2019-10-15 01:39:11,867 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:39:11,868 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973821749] [2019-10-15 01:39:11,868 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:39:11,869 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:39:11,869 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:39:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:39:12,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:39:12,378 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973821749] [2019-10-15 01:39:12,379 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:39:12,379 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:39:12,380 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139785405] [2019-10-15 01:39:12,385 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:39:12,385 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:39:12,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:39:12,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:39:12,403 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 3 states. [2019-10-15 01:39:12,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:39:12,953 INFO L93 Difference]: Finished difference Result 246 states and 454 transitions. [2019-10-15 01:39:12,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:39:12,955 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2019-10-15 01:39:12,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:39:12,975 INFO L225 Difference]: With dead ends: 246 [2019-10-15 01:39:12,975 INFO L226 Difference]: Without dead ends: 157 [2019-10-15 01:39:12,980 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:39:13,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2019-10-15 01:39:13,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2019-10-15 01:39:13,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2019-10-15 01:39:13,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 279 transitions. [2019-10-15 01:39:13,055 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 279 transitions. Word has length 77 [2019-10-15 01:39:13,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:39:13,056 INFO L462 AbstractCegarLoop]: Abstraction has 157 states and 279 transitions. [2019-10-15 01:39:13,056 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:39:13,057 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 279 transitions. [2019-10-15 01:39:13,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-15 01:39:13,066 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:39:13,066 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:39:13,066 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:39:13,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:39:13,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1195669765, now seen corresponding path program 1 times [2019-10-15 01:39:13,067 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:39:13,067 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418065152] [2019-10-15 01:39:13,067 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:39:13,068 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:39:13,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:39:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:39:13,178 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:39:13,179 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418065152] [2019-10-15 01:39:13,179 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:39:13,179 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:39:13,180 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444454787] [2019-10-15 01:39:13,181 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:39:13,182 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:39:13,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:39:13,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:39:13,182 INFO L87 Difference]: Start difference. First operand 157 states and 279 transitions. Second operand 6 states. [2019-10-15 01:39:13,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:39:13,770 INFO L93 Difference]: Finished difference Result 402 states and 725 transitions. [2019-10-15 01:39:13,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:39:13,770 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2019-10-15 01:39:13,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:39:13,775 INFO L225 Difference]: With dead ends: 402 [2019-10-15 01:39:13,776 INFO L226 Difference]: Without dead ends: 250 [2019-10-15 01:39:13,778 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:39:13,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2019-10-15 01:39:13,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 238. [2019-10-15 01:39:13,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2019-10-15 01:39:13,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 407 transitions. [2019-10-15 01:39:13,808 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 407 transitions. Word has length 87 [2019-10-15 01:39:13,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:39:13,808 INFO L462 AbstractCegarLoop]: Abstraction has 238 states and 407 transitions. [2019-10-15 01:39:13,810 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:39:13,810 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 407 transitions. [2019-10-15 01:39:13,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-15 01:39:13,814 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:39:13,814 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:39:13,815 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:39:13,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:39:13,815 INFO L82 PathProgramCache]: Analyzing trace with hash -2128691369, now seen corresponding path program 1 times [2019-10-15 01:39:13,815 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:39:13,816 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219206295] [2019-10-15 01:39:13,816 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:39:13,816 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:39:13,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:39:13,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:39:13,945 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:39:13,946 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219206295] [2019-10-15 01:39:13,946 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:39:13,946 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:39:13,946 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680044851] [2019-10-15 01:39:13,947 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:39:13,947 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:39:13,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:39:13,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:39:13,952 INFO L87 Difference]: Start difference. First operand 238 states and 407 transitions. Second operand 3 states. [2019-10-15 01:39:14,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:39:14,397 INFO L93 Difference]: Finished difference Result 700 states and 1240 transitions. [2019-10-15 01:39:14,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:39:14,400 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2019-10-15 01:39:14,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:39:14,404 INFO L225 Difference]: With dead ends: 700 [2019-10-15 01:39:14,405 INFO L226 Difference]: Without dead ends: 467 [2019-10-15 01:39:14,407 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:39:14,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2019-10-15 01:39:14,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 467. [2019-10-15 01:39:14,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2019-10-15 01:39:14,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 779 transitions. [2019-10-15 01:39:14,450 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 779 transitions. Word has length 88 [2019-10-15 01:39:14,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:39:14,451 INFO L462 AbstractCegarLoop]: Abstraction has 467 states and 779 transitions. [2019-10-15 01:39:14,451 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:39:14,451 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 779 transitions. [2019-10-15 01:39:14,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-15 01:39:14,457 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:39:14,457 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:39:14,458 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:39:14,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:39:14,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1130434117, now seen corresponding path program 1 times [2019-10-15 01:39:14,458 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:39:14,459 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160242600] [2019-10-15 01:39:14,459 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:39:14,459 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:39:14,459 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:39:14,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:39:14,555 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:39:14,555 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160242600] [2019-10-15 01:39:14,555 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:39:14,556 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:39:14,556 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246658564] [2019-10-15 01:39:14,556 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:39:14,557 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:39:14,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:39:14,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:39:14,557 INFO L87 Difference]: Start difference. First operand 467 states and 779 transitions. Second operand 6 states. [2019-10-15 01:39:15,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:39:15,246 INFO L93 Difference]: Finished difference Result 1289 states and 2330 transitions. [2019-10-15 01:39:15,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:39:15,248 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2019-10-15 01:39:15,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:39:15,254 INFO L225 Difference]: With dead ends: 1289 [2019-10-15 01:39:15,254 INFO L226 Difference]: Without dead ends: 827 [2019-10-15 01:39:15,257 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:39:15,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2019-10-15 01:39:15,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 799. [2019-10-15 01:39:15,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 799 states. [2019-10-15 01:39:15,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1251 transitions. [2019-10-15 01:39:15,321 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1251 transitions. Word has length 102 [2019-10-15 01:39:15,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:39:15,322 INFO L462 AbstractCegarLoop]: Abstraction has 799 states and 1251 transitions. [2019-10-15 01:39:15,322 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:39:15,322 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1251 transitions. [2019-10-15 01:39:15,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-15 01:39:15,330 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:39:15,330 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:39:15,331 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:39:15,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:39:15,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1060653532, now seen corresponding path program 1 times [2019-10-15 01:39:15,331 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:39:15,332 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664809458] [2019-10-15 01:39:15,332 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:39:15,332 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:39:15,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:39:15,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:39:15,411 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:39:15,412 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664809458] [2019-10-15 01:39:15,412 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429180609] [2019-10-15 01:39:15,412 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:39:15,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:39:15,521 INFO L256 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-15 01:39:15,532 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:39:15,579 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:39:15,579 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:39:15,660 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:39:15,660 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1968100590] [2019-10-15 01:39:15,695 INFO L162 IcfgInterpreter]: Started Sifa with 81 locations of interest [2019-10-15 01:39:15,696 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 01:39:15,702 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 01:39:15,712 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 01:39:15,713 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 01:39:16,079 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 98 for LOIs [2019-10-15 01:39:18,211 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 181 [2019-10-15 01:39:18,345 INFO L199 IcfgInterpreter]: Interpreting procedure calculate_output with input of size 141 for LOIs [2019-10-15 01:39:18,930 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2019-10-15 01:39:19,135 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2019-10-15 01:39:19,361 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 143 [2019-10-15 01:39:19,475 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2019-10-15 01:39:19,611 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2019-10-15 01:39:19,891 WARN L191 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-10-15 01:39:20,047 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-10-15 01:39:20,399 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-10-15 01:39:20,532 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-10-15 01:39:20,644 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-15 01:39:20,932 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-10-15 01:39:21,102 WARN L191 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 01:39:21,614 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 148 [2019-10-15 01:39:21,781 WARN L191 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-10-15 01:39:21,959 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2019-10-15 01:39:22,150 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 148 [2019-10-15 01:39:22,274 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-10-15 01:39:22,382 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-10-15 01:39:22,684 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-10-15 01:39:22,845 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-10-15 01:39:23,431 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 148 [2019-10-15 01:39:23,690 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-10-15 01:39:23,913 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-10-15 01:39:24,259 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 148 [2019-10-15 01:39:24,397 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-10-15 01:39:24,541 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 01:39:24,962 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 148 [2019-10-15 01:39:25,310 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 148 [2019-10-15 01:39:25,651 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 148 [2019-10-15 01:39:25,994 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 148 [2019-10-15 01:39:26,352 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 148 [2019-10-15 01:39:26,998 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 148 [2019-10-15 01:39:28,004 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2019-10-15 01:39:29,745 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 147 [2019-10-15 01:39:34,220 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2019-10-15 01:39:35,971 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 145 [2019-10-15 01:39:36,079 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2019-10-15 01:39:40,336 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 16 [2019-10-15 01:39:43,918 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 264432 conjuctions. This might take some time...