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/Problem03_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:44:07,416 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-10-15 01:44:07,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:44:07,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:44:07,444 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:44:07,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:44:07,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:44:07,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:44:07,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:44:07,452 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:44:07,454 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:44:07,455 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:44:07,456 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:44:07,457 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:44:07,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:44:07,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:44:07,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:44:07,472 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:44:07,475 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 01:44:07,491 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:44:07,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:44:07,492 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:44:07,492 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:44:07,493 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:44:07,493 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:44:07,493 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:44:07,493 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:44:07,493 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:44:07,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:44:07,494 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:44:07,494 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:44:07,494 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:44:07,494 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:44:07,495 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:44:07,495 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:44:07,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:44:07,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:44:07,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:44:07,495 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:44:07,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:44:07,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:44:07,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:44:07,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:44:07,497 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:44:07,497 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:44:07,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:44:07,497 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:44:07,497 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 01:44:07,765 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:44:07,778 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:44:07,782 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:44:07,783 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:44:07,784 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:44:07,785 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label54.c [2019-10-15 01:44:07,857 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/806d6e946/9af00ea29e074eb68821e056201d6657/FLAG45436b342 [2019-10-15 01:44:08,531 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:44:08,532 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label54.c [2019-10-15 01:44:08,553 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/806d6e946/9af00ea29e074eb68821e056201d6657/FLAG45436b342 [2019-10-15 01:44:08,684 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/806d6e946/9af00ea29e074eb68821e056201d6657 [2019-10-15 01:44:08,694 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:44:08,695 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:44:08,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:44:08,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:44:08,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:44:08,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:44:08" (1/1) ... [2019-10-15 01:44:08,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b0ce6e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:08, skipping insertion in model container [2019-10-15 01:44:08,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:44:08" (1/1) ... [2019-10-15 01:44:08,712 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:44:08,798 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:44:09,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:44:09,571 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:44:09,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:44:09,917 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:44:09,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:09 WrapperNode [2019-10-15 01:44:09,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:44:09,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:44:09,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:44:09,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:44:09,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:09" (1/1) ... [2019-10-15 01:44:09,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:09" (1/1) ... [2019-10-15 01:44:09,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:09" (1/1) ... [2019-10-15 01:44:09,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:09" (1/1) ... [2019-10-15 01:44:10,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:09" (1/1) ... [2019-10-15 01:44:10,116 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:09" (1/1) ... [2019-10-15 01:44:10,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:09" (1/1) ... [2019-10-15 01:44:10,151 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:44:10,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:44:10,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:44:10,152 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:44:10,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:09" (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 01:44:10,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:44:10,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:44:10,227 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-15 01:44:10,228 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:44:10,228 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-15 01:44:10,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:44:10,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:44:10,229 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:44:10,229 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:44:10,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:44:10,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:44:13,415 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:44:13,416 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 01:44:13,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:44:13 BoogieIcfgContainer [2019-10-15 01:44:13,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:44:13,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:44:13,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:44:13,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:44:13,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:44:08" (1/3) ... [2019-10-15 01:44:13,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e788424 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:44:13, skipping insertion in model container [2019-10-15 01:44:13,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:09" (2/3) ... [2019-10-15 01:44:13,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e788424 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:44:13, skipping insertion in model container [2019-10-15 01:44:13,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:44:13" (3/3) ... [2019-10-15 01:44:13,427 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label54.c [2019-10-15 01:44:13,498 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:44:13,507 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:44:13,519 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:44:13,548 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:44:13,549 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:44:13,549 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:44:13,549 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:44:13,549 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:44:13,549 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:44:13,549 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:44:13,550 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:44:13,575 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states. [2019-10-15 01:44:13,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-15 01:44:13,590 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:44:13,591 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:44:13,593 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:44:13,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:44:13,600 INFO L82 PathProgramCache]: Analyzing trace with hash 136469542, now seen corresponding path program 1 times [2019-10-15 01:44:13,612 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:44:13,612 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375382582] [2019-10-15 01:44:13,612 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:13,613 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:13,613 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:44:13,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:44:14,293 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 01:44:14,294 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375382582] [2019-10-15 01:44:14,295 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:44:14,295 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:44:14,296 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965945020] [2019-10-15 01:44:14,301 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:44:14,301 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:44:14,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:44:14,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:44:14,318 INFO L87 Difference]: Start difference. First operand 158 states. Second operand 3 states. [2019-10-15 01:44:15,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:44:15,414 INFO L93 Difference]: Finished difference Result 462 states and 886 transitions. [2019-10-15 01:44:15,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:44:15,417 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2019-10-15 01:44:15,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:44:15,453 INFO L225 Difference]: With dead ends: 462 [2019-10-15 01:44:15,454 INFO L226 Difference]: Without dead ends: 301 [2019-10-15 01:44:15,461 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 01:44:15,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2019-10-15 01:44:15,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2019-10-15 01:44:15,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2019-10-15 01:44:15,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 529 transitions. [2019-10-15 01:44:15,556 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 529 transitions. Word has length 149 [2019-10-15 01:44:15,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:44:15,556 INFO L462 AbstractCegarLoop]: Abstraction has 301 states and 529 transitions. [2019-10-15 01:44:15,557 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:44:15,557 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 529 transitions. [2019-10-15 01:44:15,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-15 01:44:15,562 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:44:15,562 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:44:15,562 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:44:15,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:44:15,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1532432366, now seen corresponding path program 1 times [2019-10-15 01:44:15,563 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:44:15,563 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447296949] [2019-10-15 01:44:15,564 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:15,564 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:15,564 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:44:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:44:15,825 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:44:15,826 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447296949] [2019-10-15 01:44:15,826 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:44:15,826 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:44:15,827 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077430586] [2019-10-15 01:44:15,829 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:44:15,830 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:44:15,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:44:15,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:44:15,831 INFO L87 Difference]: Start difference. First operand 301 states and 529 transitions. Second operand 3 states. [2019-10-15 01:44:16,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:44:16,879 INFO L93 Difference]: Finished difference Result 891 states and 1588 transitions. [2019-10-15 01:44:16,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:44:16,879 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2019-10-15 01:44:16,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:44:16,889 INFO L225 Difference]: With dead ends: 891 [2019-10-15 01:44:16,889 INFO L226 Difference]: Without dead ends: 595 [2019-10-15 01:44:16,893 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 01:44:16,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2019-10-15 01:44:16,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2019-10-15 01:44:16,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2019-10-15 01:44:16,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 986 transitions. [2019-10-15 01:44:16,935 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 986 transitions. Word has length 161 [2019-10-15 01:44:16,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:44:16,936 INFO L462 AbstractCegarLoop]: Abstraction has 595 states and 986 transitions. [2019-10-15 01:44:16,936 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:44:16,936 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 986 transitions. [2019-10-15 01:44:16,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2019-10-15 01:44:16,941 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:44:16,942 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:44:16,942 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:44:16,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:44:16,943 INFO L82 PathProgramCache]: Analyzing trace with hash -943413387, now seen corresponding path program 1 times [2019-10-15 01:44:16,943 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:44:16,943 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008741342] [2019-10-15 01:44:16,944 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:16,944 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:16,944 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:44:16,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:44:17,061 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:44:17,062 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008741342] [2019-10-15 01:44:17,062 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106050891] [2019-10-15 01:44:17,062 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 01:44:17,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:44:17,292 INFO L256 TraceCheckSpWp]: Trace formula consists of 1004 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:44:17,306 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:44:17,432 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:44:17,432 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:44:17,633 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:44:17,634 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1696476085] [2019-10-15 01:44:17,704 INFO L162 IcfgInterpreter]: Started Sifa with 153 locations of interest [2019-10-15 01:44:17,704 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 01:44:17,714 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 01:44:17,730 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 01:44:17,733 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 01:44:18,890 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 208 for LOIs [2019-10-15 01:44:19,296 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2019-10-15 01:44:19,593 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 304 [2019-10-15 01:44:20,521 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 252 [2019-10-15 01:44:20,981 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 333 [2019-10-15 01:44:21,463 WARN L191 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 252 [2019-10-15 01:44:21,884 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 252 [2019-10-15 01:44:22,258 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 252 [2019-10-15 01:44:22,675 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 252 [2019-10-15 01:44:23,562 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 293 DAG size of output: 293 [2019-10-15 01:44:23,969 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 289 [2019-10-15 01:44:24,429 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 228 [2019-10-15 01:44:24,893 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 293 DAG size of output: 293 [2019-10-15 01:44:25,174 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 289 [2019-10-15 01:44:25,545 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2019-10-15 01:44:25,798 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 372 DAG size of output: 370 [2019-10-15 01:44:25,911 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 369 [2019-10-15 01:44:26,073 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 370 DAG size of output: 370 [2019-10-15 01:44:26,218 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 373 DAG size of output: 371 [2019-10-15 01:44:26,367 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2019-10-15 01:44:26,559 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 371 DAG size of output: 371 [2019-10-15 01:44:26,662 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 312 DAG size of output: 310 [2019-10-15 01:44:27,408 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 293 DAG size of output: 293 [2019-10-15 01:44:27,655 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 289 [2019-10-15 01:44:28,031 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 228 [2019-10-15 01:44:28,344 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 293 DAG size of output: 293 [2019-10-15 01:44:28,754 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 228 [2019-10-15 01:44:29,051 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 375 DAG size of output: 371 [2019-10-15 01:44:29,164 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 369 [2019-10-15 01:44:29,381 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 370 DAG size of output: 370 [2019-10-15 01:44:29,511 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 376 DAG size of output: 372 [2019-10-15 01:44:29,627 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2019-10-15 01:44:29,776 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 371 DAG size of output: 371 [2019-10-15 01:44:30,062 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 289 DAG size of output: 289 [2019-10-15 01:44:30,316 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 293 DAG size of output: 293 [2019-10-15 01:44:30,561 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 289 [2019-10-15 01:44:31,700 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 228 [2019-10-15 01:44:31,989 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 375 DAG size of output: 371 [2019-10-15 01:44:32,096 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 369 [2019-10-15 01:44:32,293 WARN L191 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 370 DAG size of output: 370 [2019-10-15 01:44:32,923 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 289 DAG size of output: 289 [2019-10-15 01:44:33,197 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 293 DAG size of output: 293 [2019-10-15 01:44:34,475 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 293 DAG size of output: 293 [2019-10-15 01:44:34,909 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 293 DAG size of output: 289 [2019-10-15 01:44:35,412 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 375 DAG size of output: 371 [2019-10-15 01:44:35,517 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 369 [2019-10-15 01:44:35,667 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 370 DAG size of output: 370 [2019-10-15 01:44:35,813 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 289 DAG size of output: 289 [2019-10-15 01:44:36,297 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 293 DAG size of output: 293 [2019-10-15 01:44:36,542 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 293 DAG size of output: 289 [2019-10-15 01:44:37,523 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 293 DAG size of output: 293 [2019-10-15 01:44:37,884 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 289 [2019-10-15 01:44:38,245 INFO L199 IcfgInterpreter]: Interpreting procedure calculate_output with input of size 172 for LOIs [2019-10-15 01:44:39,101 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 125 [2019-10-15 01:44:39,203 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2019-10-15 01:44:39,644 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 140 [2019-10-15 01:44:39,835 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2019-10-15 01:44:40,729 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 140 [2019-10-15 01:44:40,913 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2019-10-15 01:44:41,105 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-10-15 01:44:41,767 WARN L191 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 141 [2019-10-15 01:44:41,956 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2019-10-15 01:44:42,155 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 174 [2019-10-15 01:44:42,556 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 141 [2019-10-15 01:44:42,749 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 141