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_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:39:37,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:39:37,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:39:37,987 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-15 01:39:38,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:39:38,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:39:38,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:39:38,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:39:38,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:39:38,019 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:39:38,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:39:38,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:39:38,024 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:39:38,025 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:39:38,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:39:38,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:39:38,029 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:39:38,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:39:38,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:39:38,037 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:39:38,038 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 01:39:38,059 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:39:38,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:39:38,064 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:39:38,064 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:39:38,065 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:39:38,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:39:38,065 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:39:38,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:39:38,066 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:39:38,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:39:38,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:39:38,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:39:38,066 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:39:38,067 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:39:38,067 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:39:38,067 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:39:38,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:39:38,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:39:38,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:39:38,069 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:39:38,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:39:38,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:39:38,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:39:38,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:39:38,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:39:38,070 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:39:38,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:39:38,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:39:38,074 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 01:39:38,371 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:39:38,385 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:39:38,389 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:39:38,390 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:39:38,391 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:39:38,391 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label15.c [2019-10-15 01:39:38,476 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e20c41bdb/316a94d1284146cd81fe6e3ca92e5a79/FLAG01dd5138d [2019-10-15 01:39:39,119 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:39:39,120 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label15.c [2019-10-15 01:39:39,138 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e20c41bdb/316a94d1284146cd81fe6e3ca92e5a79/FLAG01dd5138d [2019-10-15 01:39:39,308 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e20c41bdb/316a94d1284146cd81fe6e3ca92e5a79 [2019-10-15 01:39:39,317 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:39:39,319 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:39:39,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:39:39,320 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:39:39,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:39:39,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:39:39" (1/1) ... [2019-10-15 01:39:39,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@799252b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:39:39, skipping insertion in model container [2019-10-15 01:39:39,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:39:39" (1/1) ... [2019-10-15 01:39:39,335 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:39:39,385 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:39:39,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:39:39,818 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:39:40,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:39:40,062 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:39:40,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:39:40 WrapperNode [2019-10-15 01:39:40,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:39:40,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:39:40,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:39:40,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:39:40,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:39:40" (1/1) ... [2019-10-15 01:39:40,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:39:40" (1/1) ... [2019-10-15 01:39:40,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:39:40" (1/1) ... [2019-10-15 01:39:40,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:39:40" (1/1) ... [2019-10-15 01:39:40,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:39:40" (1/1) ... [2019-10-15 01:39:40,169 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:39:40" (1/1) ... [2019-10-15 01:39:40,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:39:40" (1/1) ... [2019-10-15 01:39:40,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:39:40,188 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:39:40,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:39:40,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:39:40,189 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:39:40" (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 01:39:40,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:39:40,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:39:40,248 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-15 01:39:40,248 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:39:40,248 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-15 01:39:40,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:39:40,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:39:40,249 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:39:40,249 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:39:40,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:39:40,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:39:42,208 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:39:42,208 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 01:39:42,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:39:42 BoogieIcfgContainer [2019-10-15 01:39:42,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:39:42,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:39:42,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:39:42,215 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:39:42,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:39:39" (1/3) ... [2019-10-15 01:39:42,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d0b1fe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:39:42, skipping insertion in model container [2019-10-15 01:39:42,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:39:40" (2/3) ... [2019-10-15 01:39:42,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d0b1fe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:39:42, skipping insertion in model container [2019-10-15 01:39:42,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:39:42" (3/3) ... [2019-10-15 01:39:42,219 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label15.c [2019-10-15 01:39:42,230 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:39:42,239 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:39:42,251 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:39:42,278 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:39:42,279 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:39:42,279 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:39:42,279 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:39:42,279 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:39:42,280 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:39:42,280 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:39:42,280 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:39:42,302 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2019-10-15 01:39:42,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-15 01:39:42,311 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:39:42,312 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 01:39:42,314 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:39:42,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:39:42,321 INFO L82 PathProgramCache]: Analyzing trace with hash 826810657, now seen corresponding path program 1 times [2019-10-15 01:39:42,331 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:39:42,331 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810595955] [2019-10-15 01:39:42,331 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:39:42,332 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:39:42,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:39:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:39:42,801 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 01:39:42,802 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810595955] [2019-10-15 01:39:42,803 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:39:42,803 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:39:42,804 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806987600] [2019-10-15 01:39:42,809 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:39:42,810 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:39:42,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:39:42,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:39:42,828 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 4 states. [2019-10-15 01:39:43,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:39:43,461 INFO L93 Difference]: Finished difference Result 246 states and 454 transitions. [2019-10-15 01:39:43,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:39:43,463 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2019-10-15 01:39:43,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:39:43,479 INFO L225 Difference]: With dead ends: 246 [2019-10-15 01:39:43,479 INFO L226 Difference]: Without dead ends: 157 [2019-10-15 01:39:43,484 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:39:43,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2019-10-15 01:39:43,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2019-10-15 01:39:43,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2019-10-15 01:39:43,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 291 transitions. [2019-10-15 01:39:43,591 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 291 transitions. Word has length 77 [2019-10-15 01:39:43,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:39:43,592 INFO L462 AbstractCegarLoop]: Abstraction has 157 states and 291 transitions. [2019-10-15 01:39:43,592 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:39:43,592 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 291 transitions. [2019-10-15 01:39:43,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-15 01:39:43,600 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:39:43,600 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 01:39:43,600 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:39:43,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:39:43,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1195675976, now seen corresponding path program 1 times [2019-10-15 01:39:43,601 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:39:43,602 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462491076] [2019-10-15 01:39:43,602 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:39:43,602 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:39:43,602 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:39:43,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:39:43,713 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 01:39:43,713 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462491076] [2019-10-15 01:39:43,714 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:39:43,714 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:39:43,714 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123070716] [2019-10-15 01:39:43,716 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:39:43,717 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:39:43,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:39:43,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:39:43,718 INFO L87 Difference]: Start difference. First operand 157 states and 291 transitions. Second operand 6 states. [2019-10-15 01:39:44,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:39:44,342 INFO L93 Difference]: Finished difference Result 402 states and 762 transitions. [2019-10-15 01:39:44,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:39:44,343 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2019-10-15 01:39:44,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:39:44,350 INFO L225 Difference]: With dead ends: 402 [2019-10-15 01:39:44,350 INFO L226 Difference]: Without dead ends: 250 [2019-10-15 01:39:44,352 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 01:39:44,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2019-10-15 01:39:44,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 236. [2019-10-15 01:39:44,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2019-10-15 01:39:44,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 428 transitions. [2019-10-15 01:39:44,386 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 428 transitions. Word has length 87 [2019-10-15 01:39:44,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:39:44,387 INFO L462 AbstractCegarLoop]: Abstraction has 236 states and 428 transitions. [2019-10-15 01:39:44,387 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:39:44,387 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 428 transitions. [2019-10-15 01:39:44,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-15 01:39:44,392 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:39:44,392 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 01:39:44,392 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:39:44,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:39:44,398 INFO L82 PathProgramCache]: Analyzing trace with hash -2128697580, now seen corresponding path program 1 times [2019-10-15 01:39:44,399 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:39:44,399 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679507784] [2019-10-15 01:39:44,399 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:39:44,399 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:39:44,400 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:39:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:39:44,594 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 01:39:44,595 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679507784] [2019-10-15 01:39:44,595 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:39:44,595 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:39:44,595 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472950842] [2019-10-15 01:39:44,596 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:39:44,596 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:39:44,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:39:44,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:39:44,602 INFO L87 Difference]: Start difference. First operand 236 states and 428 transitions. Second operand 4 states. [2019-10-15 01:39:45,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:39:45,326 INFO L93 Difference]: Finished difference Result 844 states and 1592 transitions. [2019-10-15 01:39:45,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:39:45,327 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2019-10-15 01:39:45,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:39:45,335 INFO L225 Difference]: With dead ends: 844 [2019-10-15 01:39:45,336 INFO L226 Difference]: Without dead ends: 613 [2019-10-15 01:39:45,338 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:39:45,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2019-10-15 01:39:45,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 538. [2019-10-15 01:39:45,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2019-10-15 01:39:45,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 893 transitions. [2019-10-15 01:39:45,387 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 893 transitions. Word has length 88 [2019-10-15 01:39:45,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:39:45,388 INFO L462 AbstractCegarLoop]: Abstraction has 538 states and 893 transitions. [2019-10-15 01:39:45,388 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:39:45,388 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 893 transitions. [2019-10-15 01:39:45,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-10-15 01:39:45,397 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:39:45,397 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, 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] [2019-10-15 01:39:45,398 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:39:45,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:39:45,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1740727672, now seen corresponding path program 1 times [2019-10-15 01:39:45,398 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:39:45,399 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685460807] [2019-10-15 01:39:45,399 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:39:45,399 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:39:45,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:39:45,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:39:45,588 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:39:45,588 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685460807] [2019-10-15 01:39:45,588 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:39:45,589 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:39:45,589 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418648782] [2019-10-15 01:39:45,590 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:39:45,590 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:39:45,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:39:45,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:39:45,616 INFO L87 Difference]: Start difference. First operand 538 states and 893 transitions. Second operand 6 states. [2019-10-15 01:39:46,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:39:46,343 INFO L93 Difference]: Finished difference Result 1251 states and 2103 transitions. [2019-10-15 01:39:46,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:39:46,343 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2019-10-15 01:39:46,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:39:46,348 INFO L225 Difference]: With dead ends: 1251 [2019-10-15 01:39:46,348 INFO L226 Difference]: Without dead ends: 639 [2019-10-15 01:39:46,350 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:39:46,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2019-10-15 01:39:46,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 473. [2019-10-15 01:39:46,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2019-10-15 01:39:46,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 769 transitions. [2019-10-15 01:39:46,386 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 769 transitions. Word has length 111 [2019-10-15 01:39:46,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:39:46,386 INFO L462 AbstractCegarLoop]: Abstraction has 473 states and 769 transitions. [2019-10-15 01:39:46,386 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:39:46,386 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 769 transitions. [2019-10-15 01:39:46,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-15 01:39:46,394 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:39:46,395 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, 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] [2019-10-15 01:39:46,395 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:39:46,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:39:46,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1376656453, now seen corresponding path program 1 times [2019-10-15 01:39:46,396 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:39:46,396 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881046752] [2019-10-15 01:39:46,396 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:39:46,396 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:39:46,397 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:39:46,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:39:46,543 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:39:46,543 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881046752] [2019-10-15 01:39:46,544 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564736124] [2019-10-15 01:39:46,544 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 01:39:46,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:39:46,673 INFO L256 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-15 01:39:46,685 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:39:46,810 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:39:46,811 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:39:47,053 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2019-10-15 01:39:47,101 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:39:47,104 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:39:47,105 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:39:47,106 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:39:47,107 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:39:47,108 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:39:47,109 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:39:47,278 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:39:47,278 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1812906552] [2019-10-15 01:39:47,347 INFO L162 IcfgInterpreter]: Started Sifa with 81 locations of interest [2019-10-15 01:39:47,347 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 01:39:47,354 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 01:39:47,363 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 01:39:47,364 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 01:39:47,648 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 98 for LOIs [2019-10-15 01:39:49,896 INFO L199 IcfgInterpreter]: Interpreting procedure calculate_output with input of size 140 for LOIs [2019-10-15 01:39:50,394 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2019-10-15 01:39:50,503 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2019-10-15 01:39:50,615 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2019-10-15 01:39:50,910 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-10-15 01:39:51,073 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-10-15 01:39:51,232 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2019-10-15 01:39:51,515 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-10-15 01:39:51,630 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-10-15 01:39:51,904 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-10-15 01:39:52,020 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-10-15 01:39:52,176 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2019-10-15 01:39:52,364 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2019-10-15 01:39:53,010 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2019-10-15 01:39:53,118 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2019-10-15 01:39:53,227 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-10-15 01:39:53,435 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2019-10-15 01:39:53,555 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2019-10-15 01:39:53,692 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2019-10-15 01:39:53,891 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2019-10-15 01:39:54,016 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2019-10-15 01:39:54,507 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2019-10-15 01:39:55,828 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:39:56,660 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2019-10-15 01:39:58,195 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-10-15 01:39:58,398 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2019-10-15 01:39:59,117 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-10-15 01:40:00,206 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-10-15 01:40:02,179 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-10-15 01:40:05,909 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2019-10-15 01:40:06,052 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2019-10-15 01:40:06,182 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-15 01:40:11,045 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 10 [2019-10-15 01:40:11,437 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 81648 conjuctions. This might take some time...