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/loop-lit/gj2007.c.i.p+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:02:46,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:02:46,233 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:02:46,255 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:02:46,256 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:02:46,258 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:02:46,260 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:02:46,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:02:46,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:02:46,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:02:46,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:02:46,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:02:46,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:02:46,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:02:46,285 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:02:46,287 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:02:46,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:02:46,289 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:02:46,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:02:46,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:02:46,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:02:46,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:02:46,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:02:46,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:02:46,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 03:02:46,313 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:02:46,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:02:46,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:02:46,316 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:02:46,318 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:02:46,318 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:02:46,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:02:46,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:02:46,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:02:46,321 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:02:46,322 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:02:46,323 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 03:02:46,357 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:02:46,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:02:46,363 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:02:46,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:02:46,363 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:02:46,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:02:46,364 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:02:46,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:02:46,364 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:02:46,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:02:46,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:02:46,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:02:46,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:02:46,365 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:02:46,365 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:02:46,365 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:02:46,365 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:02:46,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:02:46,366 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:02:46,366 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:02:46,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:02:46,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:02:46,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:02:46,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:02:46,368 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:02:46,368 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:02:46,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:02:46,368 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:02:46,369 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 03:02:46,700 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:02:46,715 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:02:46,719 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:02:46,721 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:02:46,721 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:02:46,722 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gj2007.c.i.p+nlh-reducer.c [2019-10-15 03:02:46,791 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0406d451/542a8c9d87e246799df61f57ea14db5b/FLAG2ca74c1cb [2019-10-15 03:02:47,319 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:02:47,320 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007.c.i.p+nlh-reducer.c [2019-10-15 03:02:47,332 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0406d451/542a8c9d87e246799df61f57ea14db5b/FLAG2ca74c1cb [2019-10-15 03:02:47,644 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0406d451/542a8c9d87e246799df61f57ea14db5b [2019-10-15 03:02:47,655 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:02:47,657 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:02:47,661 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:02:47,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:02:47,665 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:02:47,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:02:47" (1/1) ... [2019-10-15 03:02:47,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76d728e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:47, skipping insertion in model container [2019-10-15 03:02:47,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:02:47" (1/1) ... [2019-10-15 03:02:47,678 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:02:47,722 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:02:48,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:02:48,090 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:02:48,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:02:48,360 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:02:48,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:48 WrapperNode [2019-10-15 03:02:48,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:02:48,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:02:48,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:02:48,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:02:48,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:48" (1/1) ... [2019-10-15 03:02:48,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:48" (1/1) ... [2019-10-15 03:02:48,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:48" (1/1) ... [2019-10-15 03:02:48,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:48" (1/1) ... [2019-10-15 03:02:48,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:48" (1/1) ... [2019-10-15 03:02:48,421 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:48" (1/1) ... [2019-10-15 03:02:48,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:48" (1/1) ... [2019-10-15 03:02:48,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:02:48,431 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:02:48,432 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:02:48,432 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:02:48,433 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:48" (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 03:02:48,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:02:48,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:02:48,517 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:02:48,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:02:48,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 03:02:48,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 03:02:48,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:02:48,518 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:02:48,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:02:48,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:02:50,237 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:02:50,237 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-15 03:02:50,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:02:50 BoogieIcfgContainer [2019-10-15 03:02:50,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:02:50,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:02:50,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:02:50,248 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:02:50,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:02:47" (1/3) ... [2019-10-15 03:02:50,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d63664b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:02:50, skipping insertion in model container [2019-10-15 03:02:50,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:48" (2/3) ... [2019-10-15 03:02:50,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d63664b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:02:50, skipping insertion in model container [2019-10-15 03:02:50,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:02:50" (3/3) ... [2019-10-15 03:02:50,256 INFO L109 eAbstractionObserver]: Analyzing ICFG gj2007.c.i.p+nlh-reducer.c [2019-10-15 03:02:50,267 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:02:50,296 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:02:50,311 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:02:50,342 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:02:50,342 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:02:50,342 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:02:50,342 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:02:50,343 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:02:50,343 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:02:50,343 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:02:50,343 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:02:50,373 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2019-10-15 03:02:50,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-10-15 03:02:50,384 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:02:50,386 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] [2019-10-15 03:02:50,388 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:02:50,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:02:50,394 INFO L82 PathProgramCache]: Analyzing trace with hash 325793653, now seen corresponding path program 1 times [2019-10-15 03:02:50,403 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:02:50,403 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947411195] [2019-10-15 03:02:50,404 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:02:50,404 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:02:50,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:02:50,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:02:54,908 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 03:02:54,909 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947411195] [2019-10-15 03:02:54,910 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:02:54,910 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2019-10-15 03:02:54,911 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089576928] [2019-10-15 03:02:54,916 INFO L442 AbstractCegarLoop]: Interpolant automaton has 70 states [2019-10-15 03:02:54,916 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:02:54,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2019-10-15 03:02:54,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=4626, Unknown=0, NotChecked=0, Total=4830 [2019-10-15 03:02:54,938 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 70 states. [2019-10-15 03:02:59,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:02:59,625 INFO L93 Difference]: Finished difference Result 88 states and 157 transitions. [2019-10-15 03:02:59,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2019-10-15 03:02:59,630 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 75 [2019-10-15 03:02:59,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:02:59,645 INFO L225 Difference]: With dead ends: 88 [2019-10-15 03:02:59,645 INFO L226 Difference]: Without dead ends: 77 [2019-10-15 03:02:59,654 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=204, Invalid=4626, Unknown=0, NotChecked=0, Total=4830 [2019-10-15 03:02:59,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2019-10-15 03:02:59,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2019-10-15 03:02:59,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2019-10-15 03:02:59,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2019-10-15 03:02:59,738 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 75 [2019-10-15 03:02:59,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:02:59,740 INFO L462 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2019-10-15 03:02:59,740 INFO L463 AbstractCegarLoop]: Interpolant automaton has 70 states. [2019-10-15 03:02:59,741 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2019-10-15 03:02:59,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-10-15 03:02:59,750 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:02:59,750 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] [2019-10-15 03:02:59,750 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:02:59,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:02:59,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1517143767, now seen corresponding path program 1 times [2019-10-15 03:02:59,751 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:02:59,751 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338662163] [2019-10-15 03:02:59,752 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:02:59,752 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:02:59,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:02:59,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:03:03,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:03:03,960 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338662163] [2019-10-15 03:03:03,962 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444988122] [2019-10-15 03:03:03,962 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 03:03:04,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:03:04,062 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 71 conjunts are in the unsatisfiable core [2019-10-15 03:03:04,072 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:03:04,106 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:04,125 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:04,136 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:04,146 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:04,188 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:04,213 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:04,231 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:04,249 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:04,270 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:04,297 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:04,322 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:04,344 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:04,383 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:04,411 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:04,437 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:04,477 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:04,510 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:04,555 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:04,609 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:04,656 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:04,692 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:04,736 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:04,796 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:04,833 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:04,878 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:04,925 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:05,042 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:05,087 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:05,191 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:05,265 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:05,327 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:05,380 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:05,444 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:05,500 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:05,549 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:05,673 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:05,785 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:05,909 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:05,969 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:06,027 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:06,090 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:06,157 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:06,217 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:06,272 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:06,341 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:06,403 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:06,461 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:06,525 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:06,595 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:06,665 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:06,735 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:06,805 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:06,886 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:06,961 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:07,044 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:07,132 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:07,201 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:07,338 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:07,545 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:07,706 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:07,820 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:07,949 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:08,061 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:08,168 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:08,273 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:08,355 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:08,426 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:08,508 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:08,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:03:08,640 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:03:08,721 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:08,825 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:08,920 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:09,020 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:09,181 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:09,314 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:09,422 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:09,514 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:09,620 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:09,748 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:09,846 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:09,946 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:10,087 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:10,229 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:10,395 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:10,536 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:10,655 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:10,750 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:10,860 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:10,979 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:11,155 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:11,414 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:11,522 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:11,651 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:11,768 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:11,885 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:12,003 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:12,134 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:12,249 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:12,360 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:12,481 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:12,562 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:12,679 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:12,773 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:12,881 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:13,046 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:13,173 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:13,295 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:13,390 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:13,502 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:13,604 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:13,695 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:13,792 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:13,915 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:14,025 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:14,120 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:14,232 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:14,319 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:14,410 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:14,500 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:14,597 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:14,699 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:14,798 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:14,893 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:15,021 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:15,170 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:15,270 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:15,376 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:15,491 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:15,600 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:15,734 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:15,831 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:15,954 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:16,080 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:16,190 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:16,291 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:16,393 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:16,508 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:16,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:03:16,669 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [682781860] [2019-10-15 03:03:16,702 INFO L162 IcfgInterpreter]: Started Sifa with 76 locations of interest [2019-10-15 03:03:16,702 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:03:16,709 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:03:16,719 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:03:16,720 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:03:16,825 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 12 for LOIs [2019-10-15 03:03:17,650 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2019-10-15 03:03:17,656 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 03:03:31,393 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-15 03:03:31,394 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71, 71, 73] total 213 [2019-10-15 03:03:31,394 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762224211] [2019-10-15 03:03:31,397 INFO L442 AbstractCegarLoop]: Interpolant automaton has 213 states [2019-10-15 03:03:31,398 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:03:31,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 213 interpolants. [2019-10-15 03:03:31,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11031, Invalid=34125, Unknown=0, NotChecked=0, Total=45156 [2019-10-15 03:03:31,418 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 213 states.