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_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:40:21,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:40:21,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:40:21,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-15 01:40:21,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:40:21,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:40:21,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:40:21,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:40:21,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:40:21,453 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:40:21,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:40:21,459 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:40:21,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:40:21,466 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:40:21,469 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:40:21,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:40:21,472 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:40:21,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:40:21,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:40:21,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:40:21,486 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 01:40:21,519 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:40:21,520 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:40:21,524 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:40:21,524 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:40:21,525 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:40:21,525 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:40:21,525 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:40:21,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:40:21,526 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:40:21,526 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:40:21,526 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:40:21,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:40:21,527 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:40:21,527 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:40:21,527 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:40:21,527 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:40:21,527 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:40:21,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:40:21,528 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:40:21,528 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:40:21,528 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:40:21,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:40:21,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:40:21,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:40:21,529 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:40:21,529 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:40:21,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:40:21,529 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:40:21,530 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 01:40:21,855 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:40:21,876 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:40:21,879 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:40:21,881 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:40:21,881 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:40:21,882 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label41.c [2019-10-15 01:40:21,957 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcc4c1142/d1fb920c0a894a59994524161c0e2014/FLAG5cf4dc730 [2019-10-15 01:40:22,560 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:40:22,561 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label41.c [2019-10-15 01:40:22,574 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcc4c1142/d1fb920c0a894a59994524161c0e2014/FLAG5cf4dc730 [2019-10-15 01:40:22,795 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcc4c1142/d1fb920c0a894a59994524161c0e2014 [2019-10-15 01:40:22,806 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:40:22,808 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:40:22,809 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:40:22,809 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:40:22,813 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:40:22,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:40:22" (1/1) ... [2019-10-15 01:40:22,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22a7751a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:22, skipping insertion in model container [2019-10-15 01:40:22,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:40:22" (1/1) ... [2019-10-15 01:40:22,825 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:40:22,887 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:40:23,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:40:23,433 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:40:23,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:40:23,646 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:40:23,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:23 WrapperNode [2019-10-15 01:40:23,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:40:23,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:40:23,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:40:23,648 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:40:23,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:23" (1/1) ... [2019-10-15 01:40:23,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:23" (1/1) ... [2019-10-15 01:40:23,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:23" (1/1) ... [2019-10-15 01:40:23,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:23" (1/1) ... [2019-10-15 01:40:23,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:23" (1/1) ... [2019-10-15 01:40:23,806 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:23" (1/1) ... [2019-10-15 01:40:23,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:23" (1/1) ... [2019-10-15 01:40:23,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:40:23,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:40:23,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:40:23,826 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:40:23,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:23" (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 01:40:23,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:40:23,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:40:23,961 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-15 01:40:23,961 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:40:23,962 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-15 01:40:23,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:40:23,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:40:23,964 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:40:23,964 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:40:23,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:40:23,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:40:26,353 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:40:26,354 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 01:40:26,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:40:26 BoogieIcfgContainer [2019-10-15 01:40:26,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:40:26,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:40:26,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:40:26,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:40:26,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:40:22" (1/3) ... [2019-10-15 01:40:26,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eeba916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:40:26, skipping insertion in model container [2019-10-15 01:40:26,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:23" (2/3) ... [2019-10-15 01:40:26,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eeba916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:40:26, skipping insertion in model container [2019-10-15 01:40:26,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:40:26" (3/3) ... [2019-10-15 01:40:26,379 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label41.c [2019-10-15 01:40:26,393 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:40:26,403 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:40:26,414 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:40:26,443 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:40:26,444 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:40:26,444 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:40:26,444 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:40:26,445 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:40:26,445 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:40:26,445 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:40:26,445 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:40:26,477 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2019-10-15 01:40:26,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-15 01:40:26,485 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:40:26,486 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 01:40:26,489 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:40:26,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:40:26,495 INFO L82 PathProgramCache]: Analyzing trace with hash 826811681, now seen corresponding path program 1 times [2019-10-15 01:40:26,504 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:40:26,505 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110103211] [2019-10-15 01:40:26,505 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:40:26,505 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:40:26,505 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:40:26,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:40:26,925 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 01:40:26,926 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110103211] [2019-10-15 01:40:26,927 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:40:26,927 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:40:26,929 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533776019] [2019-10-15 01:40:26,938 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:40:26,938 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:40:26,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:40:26,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:40:26,961 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 3 states. [2019-10-15 01:40:27,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:40:27,549 INFO L93 Difference]: Finished difference Result 246 states and 454 transitions. [2019-10-15 01:40:27,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:40:27,552 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2019-10-15 01:40:27,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:40:27,574 INFO L225 Difference]: With dead ends: 246 [2019-10-15 01:40:27,574 INFO L226 Difference]: Without dead ends: 157 [2019-10-15 01:40:27,580 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 01:40:27,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2019-10-15 01:40:27,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2019-10-15 01:40:27,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2019-10-15 01:40:27,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 279 transitions. [2019-10-15 01:40:27,650 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 279 transitions. Word has length 77 [2019-10-15 01:40:27,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:40:27,651 INFO L462 AbstractCegarLoop]: Abstraction has 157 states and 279 transitions. [2019-10-15 01:40:27,651 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:40:27,651 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 279 transitions. [2019-10-15 01:40:27,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-15 01:40:27,656 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:40:27,657 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 01:40:27,657 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:40:27,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:40:27,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1195674952, now seen corresponding path program 1 times [2019-10-15 01:40:27,658 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:40:27,658 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679472950] [2019-10-15 01:40:27,658 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:40:27,659 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:40:27,659 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:40:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:40:27,821 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 01:40:27,822 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679472950] [2019-10-15 01:40:27,825 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:40:27,826 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:40:27,826 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675906550] [2019-10-15 01:40:27,829 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:40:27,829 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:40:27,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:40:27,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:40:27,830 INFO L87 Difference]: Start difference. First operand 157 states and 279 transitions. Second operand 6 states. [2019-10-15 01:40:28,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:40:28,470 INFO L93 Difference]: Finished difference Result 402 states and 725 transitions. [2019-10-15 01:40:28,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:40:28,471 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2019-10-15 01:40:28,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:40:28,475 INFO L225 Difference]: With dead ends: 402 [2019-10-15 01:40:28,476 INFO L226 Difference]: Without dead ends: 250 [2019-10-15 01:40:28,478 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 01:40:28,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2019-10-15 01:40:28,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 238. [2019-10-15 01:40:28,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2019-10-15 01:40:28,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 407 transitions. [2019-10-15 01:40:28,506 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 407 transitions. Word has length 87 [2019-10-15 01:40:28,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:40:28,507 INFO L462 AbstractCegarLoop]: Abstraction has 238 states and 407 transitions. [2019-10-15 01:40:28,507 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:40:28,507 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 407 transitions. [2019-10-15 01:40:28,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-15 01:40:28,511 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:40:28,511 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 01:40:28,511 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:40:28,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:40:28,511 INFO L82 PathProgramCache]: Analyzing trace with hash -2128696556, now seen corresponding path program 1 times [2019-10-15 01:40:28,512 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:40:28,512 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176775219] [2019-10-15 01:40:28,512 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:40:28,512 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:40:28,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:40:28,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:40:28,638 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 01:40:28,639 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176775219] [2019-10-15 01:40:28,639 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:40:28,639 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:40:28,640 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133047989] [2019-10-15 01:40:28,641 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:40:28,641 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:40:28,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:40:28,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:40:28,646 INFO L87 Difference]: Start difference. First operand 238 states and 407 transitions. Second operand 3 states. [2019-10-15 01:40:29,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:40:29,090 INFO L93 Difference]: Finished difference Result 700 states and 1240 transitions. [2019-10-15 01:40:29,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:40:29,092 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2019-10-15 01:40:29,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:40:29,097 INFO L225 Difference]: With dead ends: 700 [2019-10-15 01:40:29,097 INFO L226 Difference]: Without dead ends: 467 [2019-10-15 01:40:29,100 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 01:40:29,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2019-10-15 01:40:29,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 467. [2019-10-15 01:40:29,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2019-10-15 01:40:29,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 779 transitions. [2019-10-15 01:40:29,145 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 779 transitions. Word has length 88 [2019-10-15 01:40:29,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:40:29,145 INFO L462 AbstractCegarLoop]: Abstraction has 467 states and 779 transitions. [2019-10-15 01:40:29,146 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:40:29,146 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 779 transitions. [2019-10-15 01:40:29,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-15 01:40:29,152 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:40:29,152 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 01:40:29,153 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:40:29,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:40:29,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1130439304, now seen corresponding path program 1 times [2019-10-15 01:40:29,153 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:40:29,154 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203313755] [2019-10-15 01:40:29,154 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:40:29,154 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:40:29,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:40:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:40:29,250 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 01:40:29,251 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203313755] [2019-10-15 01:40:29,251 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:40:29,251 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:40:29,252 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981754109] [2019-10-15 01:40:29,252 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:40:29,252 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:40:29,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:40:29,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:40:29,253 INFO L87 Difference]: Start difference. First operand 467 states and 779 transitions. Second operand 6 states. [2019-10-15 01:40:29,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:40:29,877 INFO L93 Difference]: Finished difference Result 1289 states and 2330 transitions. [2019-10-15 01:40:29,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:40:29,878 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2019-10-15 01:40:29,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:40:29,888 INFO L225 Difference]: With dead ends: 1289 [2019-10-15 01:40:29,888 INFO L226 Difference]: Without dead ends: 827 [2019-10-15 01:40:29,890 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 01:40:29,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2019-10-15 01:40:29,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 799. [2019-10-15 01:40:29,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 799 states. [2019-10-15 01:40:29,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1251 transitions. [2019-10-15 01:40:29,976 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1251 transitions. Word has length 102 [2019-10-15 01:40:29,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:40:29,977 INFO L462 AbstractCegarLoop]: Abstraction has 799 states and 1251 transitions. [2019-10-15 01:40:29,978 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:40:29,978 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1251 transitions. [2019-10-15 01:40:29,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-15 01:40:29,992 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:40:29,993 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 01:40:29,994 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:40:29,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:40:29,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1060648345, now seen corresponding path program 1 times [2019-10-15 01:40:29,997 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:40:29,997 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851982916] [2019-10-15 01:40:29,997 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:40:29,997 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:40:29,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:40:30,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:40:30,152 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 01:40:30,152 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851982916] [2019-10-15 01:40:30,152 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703349974] [2019-10-15 01:40:30,153 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 01:40:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:40:30,258 INFO L256 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-15 01:40:30,268 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:40:30,310 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 01:40:30,310 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:40:30,406 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 01:40:30,407 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [183953252] [2019-10-15 01:40:30,476 INFO L162 IcfgInterpreter]: Started Sifa with 81 locations of interest [2019-10-15 01:40:30,477 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 01:40:30,486 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 01:40:30,502 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 01:40:30,503 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 01:40:30,891 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 98 for LOIs [2019-10-15 01:40:33,226 INFO L199 IcfgInterpreter]: Interpreting procedure calculate_output with input of size 141 for LOIs [2019-10-15 01:40:33,750 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2019-10-15 01:40:33,854 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2019-10-15 01:40:34,007 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2019-10-15 01:40:34,179 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 143 [2019-10-15 01:40:34,619 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-10-15 01:40:34,752 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-10-15 01:40:35,011 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-10-15 01:40:35,117 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-10-15 01:40:35,250 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-15 01:40:35,472 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-10-15 01:40:35,611 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-10-15 01:40:35,751 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 01:40:36,282 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 148 [2019-10-15 01:40:36,646 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 148 [2019-10-15 01:40:36,836 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-10-15 01:40:37,534 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 148 [2019-10-15 01:40:38,843 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 01:40:39,332 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 148 [2019-10-15 01:40:42,086 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 147 [2019-10-15 01:40:42,427 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 147 [2019-10-15 01:40:42,795 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 147 [2019-10-15 01:40:44,477 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2019-10-15 01:40:45,040 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 147 [2019-10-15 01:40:53,477 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 01:40:53,822 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 79752 conjuctions. This might take some time...