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/Problem12_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:51:08,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:51:08,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:51:08,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:51:08,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:51:08,425 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:51:08,426 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:51:08,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:51:08,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:51:08,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:51:08,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:51:08,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:51:08,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:51:08,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:51:08,451 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:51:08,452 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:51:08,453 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:51:08,455 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:51:08,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:51:08,461 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:51:08,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:51:08,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:51:08,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:51:08,471 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:51:08,473 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:51:08,473 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:51:08,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:51:08,475 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:51:08,476 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:51:08,477 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:51:08,477 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:51:08,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:51:08,480 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:51:08,481 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:51:08,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:51:08,482 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:51:08,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:51:08,483 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:51:08,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:51:08,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:51:08,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:51:08,486 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 01:51:08,512 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:51:08,513 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:51:08,514 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:51:08,514 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:51:08,514 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:51:08,515 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:51:08,515 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:51:08,515 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:51:08,515 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:51:08,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:51:08,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:51:08,516 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:51:08,516 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:51:08,516 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:51:08,516 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:51:08,516 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:51:08,517 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:51:08,517 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:51:08,517 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:51:08,517 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:51:08,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:51:08,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:51:08,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:51:08,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:51:08,518 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:51:08,518 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:51:08,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:51:08,519 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:51:08,519 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 01:51:08,767 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:51:08,780 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:51:08,785 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:51:08,787 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:51:08,787 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:51:08,788 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label22.c [2019-10-15 01:51:08,864 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/053e82421/597e5d66b55a466a95fcec1fc30d7365/FLAG6f916a920 [2019-10-15 01:51:09,635 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:51:09,636 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label22.c [2019-10-15 01:51:09,668 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/053e82421/597e5d66b55a466a95fcec1fc30d7365/FLAG6f916a920 [2019-10-15 01:51:09,724 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/053e82421/597e5d66b55a466a95fcec1fc30d7365 [2019-10-15 01:51:09,736 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:51:09,738 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:51:09,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:51:09,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:51:09,744 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:51:09,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:51:09" (1/1) ... [2019-10-15 01:51:09,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e9b8ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:51:09, skipping insertion in model container [2019-10-15 01:51:09,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:51:09" (1/1) ... [2019-10-15 01:51:09,757 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:51:09,897 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:51:11,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:51:11,555 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:51:12,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:51:12,272 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:51:12,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:51:12 WrapperNode [2019-10-15 01:51:12,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:51:12,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:51:12,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:51:12,274 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:51:12,296 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:51:12" (1/1) ... [2019-10-15 01:51:12,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:51:12" (1/1) ... [2019-10-15 01:51:12,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:51:12" (1/1) ... [2019-10-15 01:51:12,373 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:51:12" (1/1) ... [2019-10-15 01:51:12,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:51:12" (1/1) ... [2019-10-15 01:51:12,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:51:12" (1/1) ... [2019-10-15 01:51:12,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:51:12" (1/1) ... [2019-10-15 01:51:12,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:51:12,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:51:12,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:51:12,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:51:12,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:51:12" (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 01:51:12,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:51:12,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:51:12,729 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-15 01:51:12,730 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-15 01:51:12,730 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-15 01:51:12,730 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-15 01:51:12,731 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:51:12,731 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-15 01:51:12,731 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-15 01:51:12,731 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-15 01:51:12,732 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-15 01:51:12,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:51:12,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:51:12,733 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:51:12,733 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:51:12,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:51:12,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:51:19,272 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:51:19,272 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 01:51:19,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:51:19 BoogieIcfgContainer [2019-10-15 01:51:19,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:51:19,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:51:19,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:51:19,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:51:19,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:51:09" (1/3) ... [2019-10-15 01:51:19,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eca679d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:51:19, skipping insertion in model container [2019-10-15 01:51:19,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:51:12" (2/3) ... [2019-10-15 01:51:19,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eca679d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:51:19, skipping insertion in model container [2019-10-15 01:51:19,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:51:19" (3/3) ... [2019-10-15 01:51:19,303 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label22.c [2019-10-15 01:51:19,317 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:51:19,335 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:51:19,350 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:51:19,402 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:51:19,402 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:51:19,402 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:51:19,403 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:51:19,403 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:51:19,403 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:51:19,403 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:51:19,404 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:51:19,457 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states. [2019-10-15 01:51:19,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-15 01:51:19,463 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:51:19,464 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:51:19,466 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:51:19,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:51:19,474 INFO L82 PathProgramCache]: Analyzing trace with hash -874903730, now seen corresponding path program 1 times [2019-10-15 01:51:19,489 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:51:19,489 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050933982] [2019-10-15 01:51:19,490 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:51:19,490 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:51:19,490 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:51:19,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:51:19,882 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 01:51:19,885 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050933982] [2019-10-15 01:51:19,886 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:51:19,887 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:51:19,887 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019626383] [2019-10-15 01:51:19,892 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:51:19,893 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:51:19,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:51:19,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:51:19,910 INFO L87 Difference]: Start difference. First operand 694 states. Second operand 3 states. [2019-10-15 01:51:25,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:51:25,208 INFO L93 Difference]: Finished difference Result 2068 states and 4065 transitions. [2019-10-15 01:51:25,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:51:25,210 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-10-15 01:51:25,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:51:25,245 INFO L225 Difference]: With dead ends: 2068 [2019-10-15 01:51:25,245 INFO L226 Difference]: Without dead ends: 1371 [2019-10-15 01:51:25,256 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 01:51:25,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2019-10-15 01:51:25,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1368. [2019-10-15 01:51:25,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1368 states. [2019-10-15 01:51:25,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 2530 transitions. [2019-10-15 01:51:25,391 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 2530 transitions. Word has length 11 [2019-10-15 01:51:25,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:51:25,392 INFO L462 AbstractCegarLoop]: Abstraction has 1368 states and 2530 transitions. [2019-10-15 01:51:25,392 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:51:25,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 2530 transitions. [2019-10-15 01:51:25,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-15 01:51:25,394 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:51:25,395 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:51:25,395 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:51:25,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:51:25,395 INFO L82 PathProgramCache]: Analyzing trace with hash -890514439, now seen corresponding path program 1 times [2019-10-15 01:51:25,396 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:51:25,396 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074251464] [2019-10-15 01:51:25,396 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:51:25,396 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:51:25,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:51:25,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:51:25,521 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:51:25,521 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074251464] [2019-10-15 01:51:25,522 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:51:25,522 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:51:25,522 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646509627] [2019-10-15 01:51:25,524 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:51:25,524 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:51:25,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:51:25,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:51:25,525 INFO L87 Difference]: Start difference. First operand 1368 states and 2530 transitions. Second operand 5 states. [2019-10-15 01:51:32,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:51:32,104 INFO L93 Difference]: Finished difference Result 4145 states and 7711 transitions. [2019-10-15 01:51:32,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:51:32,105 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-10-15 01:51:32,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:51:32,124 INFO L225 Difference]: With dead ends: 4145 [2019-10-15 01:51:32,124 INFO L226 Difference]: Without dead ends: 2782 [2019-10-15 01:51:32,132 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:51:32,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2782 states. [2019-10-15 01:51:32,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2782 to 2758. [2019-10-15 01:51:32,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2758 states. [2019-10-15 01:51:32,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2758 states to 2758 states and 4886 transitions. [2019-10-15 01:51:32,268 INFO L78 Accepts]: Start accepts. Automaton has 2758 states and 4886 transitions. Word has length 25 [2019-10-15 01:51:32,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:51:32,269 INFO L462 AbstractCegarLoop]: Abstraction has 2758 states and 4886 transitions. [2019-10-15 01:51:32,269 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:51:32,270 INFO L276 IsEmpty]: Start isEmpty. Operand 2758 states and 4886 transitions. [2019-10-15 01:51:32,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-15 01:51:32,271 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:51:32,272 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:51:32,272 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:51:32,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:51:32,274 INFO L82 PathProgramCache]: Analyzing trace with hash 394645502, now seen corresponding path program 1 times [2019-10-15 01:51:32,274 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:51:32,275 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563398961] [2019-10-15 01:51:32,275 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:51:32,275 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:51:32,275 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:51:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:51:32,450 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:51:32,451 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563398961] [2019-10-15 01:51:32,451 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:51:32,451 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:51:32,452 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358710207] [2019-10-15 01:51:32,453 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:51:32,454 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:51:32,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:51:32,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:51:32,455 INFO L87 Difference]: Start difference. First operand 2758 states and 4886 transitions. Second operand 6 states. [2019-10-15 01:51:39,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:51:39,224 INFO L93 Difference]: Finished difference Result 8359 states and 15059 transitions. [2019-10-15 01:51:39,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:51:39,225 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2019-10-15 01:51:39,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:51:39,262 INFO L225 Difference]: With dead ends: 8359 [2019-10-15 01:51:39,262 INFO L226 Difference]: Without dead ends: 5606 [2019-10-15 01:51:39,270 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:51:39,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5606 states. [2019-10-15 01:51:39,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5606 to 5517. [2019-10-15 01:51:39,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5517 states. [2019-10-15 01:51:39,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5517 states to 5517 states and 9731 transitions. [2019-10-15 01:51:39,431 INFO L78 Accepts]: Start accepts. Automaton has 5517 states and 9731 transitions. Word has length 30 [2019-10-15 01:51:39,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:51:39,431 INFO L462 AbstractCegarLoop]: Abstraction has 5517 states and 9731 transitions. [2019-10-15 01:51:39,431 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:51:39,432 INFO L276 IsEmpty]: Start isEmpty. Operand 5517 states and 9731 transitions. [2019-10-15 01:51:39,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-15 01:51:39,433 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:51:39,433 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:51:39,434 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:51:39,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:51:39,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1486759570, now seen corresponding path program 1 times [2019-10-15 01:51:39,434 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:51:39,435 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248115586] [2019-10-15 01:51:39,435 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:51:39,435 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:51:39,435 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:51:39,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:51:39,531 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:51:39,532 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248115586] [2019-10-15 01:51:39,532 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:51:39,532 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:51:39,533 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722655819] [2019-10-15 01:51:39,533 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:51:39,534 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:51:39,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:51:39,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:51:39,534 INFO L87 Difference]: Start difference. First operand 5517 states and 9731 transitions. Second operand 6 states.