java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:40:47,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:40:47,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:40:47,211 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:40:47,211 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:40:47,213 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:40:47,215 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:40:47,224 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:40:47,228 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:40:47,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:40:47,229 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:40:47,230 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:40:47,230 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:40:47,231 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:40:47,233 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:40:47,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:40:47,235 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:40:47,238 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:40:47,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:40:47,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:40:47,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:40:47,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:40:47,252 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:40:47,252 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:40:47,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:40:47,255 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:40:47,255 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:40:47,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:40:47,258 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:40:47,259 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:40:47,259 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:40:47,261 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:40:47,262 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:40:47,262 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:40:47,264 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:40:47,264 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:40:47,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:40:47,265 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:40:47,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:40:47,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:40:47,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:40:47,268 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:40:47,295 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:40:47,295 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:40:47,296 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:40:47,297 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:40:47,297 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:40:47,297 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:40:47,297 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:40:47,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:40:47,298 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:40:47,298 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:40:47,298 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:40:47,298 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:40:47,298 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:40:47,299 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:40:47,299 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:40:47,299 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:40:47,299 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:40:47,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:40:47,300 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:40:47,300 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:40:47,300 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:40:47,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:40:47,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:40:47,301 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:40:47,301 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:40:47,301 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:40:47,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:40:47,301 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:40:47,301 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 01:40:47,573 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:40:47,589 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:40:47,593 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:40:47,595 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:40:47,595 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:40:47,596 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label50.c [2019-10-15 01:40:47,668 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c783f5bcc/a8b5ca521bbe4c4892ccbea12440d13f/FLAGaa5d7a70b [2019-10-15 01:40:48,237 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:40:48,238 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label50.c [2019-10-15 01:40:48,249 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c783f5bcc/a8b5ca521bbe4c4892ccbea12440d13f/FLAGaa5d7a70b [2019-10-15 01:40:48,551 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c783f5bcc/a8b5ca521bbe4c4892ccbea12440d13f [2019-10-15 01:40:48,561 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:40:48,565 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:40:48,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:40:48,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:40:48,571 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:40:48,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:40:48" (1/1) ... [2019-10-15 01:40:48,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35609722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:48, skipping insertion in model container [2019-10-15 01:40:48,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:40:48" (1/1) ... [2019-10-15 01:40:48,584 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:40:48,647 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:40:49,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:40:49,170 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:40:49,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:40:49,322 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:40:49,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:49 WrapperNode [2019-10-15 01:40:49,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:40:49,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:40:49,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:40:49,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:40:49,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:49" (1/1) ... [2019-10-15 01:40:49,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:49" (1/1) ... [2019-10-15 01:40:49,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:49" (1/1) ... [2019-10-15 01:40:49,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:49" (1/1) ... [2019-10-15 01:40:49,393 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:49" (1/1) ... [2019-10-15 01:40:49,421 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:49" (1/1) ... [2019-10-15 01:40:49,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:49" (1/1) ... [2019-10-15 01:40:49,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:40:49,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:40:49,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:40:49,438 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:40:49,439 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:40:49,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:40:49,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:40:49,514 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-15 01:40:49,515 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:40:49,515 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-15 01:40:49,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:40:49,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:40:49,517 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:40:49,517 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:40:49,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:40:49,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:40:51,442 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:40:51,443 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 01:40:51,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:40:51 BoogieIcfgContainer [2019-10-15 01:40:51,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:40:51,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:40:51,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:40:51,448 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:40:51,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:40:48" (1/3) ... [2019-10-15 01:40:51,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dc728cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:40:51, skipping insertion in model container [2019-10-15 01:40:51,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:40:49" (2/3) ... [2019-10-15 01:40:51,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dc728cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:40:51, skipping insertion in model container [2019-10-15 01:40:51,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:40:51" (3/3) ... [2019-10-15 01:40:51,454 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label50.c [2019-10-15 01:40:51,465 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:40:51,475 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:40:51,486 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:40:51,517 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:40:51,517 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:40:51,517 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:40:51,517 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:40:51,518 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:40:51,518 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:40:51,518 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:40:51,518 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:40:51,550 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2019-10-15 01:40:51,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-15 01:40:51,562 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:40:51,563 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:40:51,565 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:40:51,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:40:51,572 INFO L82 PathProgramCache]: Analyzing trace with hash -282027157, now seen corresponding path program 1 times [2019-10-15 01:40:51,582 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:40:51,582 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453511633] [2019-10-15 01:40:51,583 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:40:51,584 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:40:51,584 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:40:51,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:40:52,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:40:52,007 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453511633] [2019-10-15 01:40:52,008 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:40:52,008 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:40:52,009 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808263052] [2019-10-15 01:40:52,014 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:40:52,014 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:40:52,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:40:52,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:40:52,031 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 3 states. [2019-10-15 01:40:52,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:40:52,513 INFO L93 Difference]: Finished difference Result 246 states and 454 transitions. [2019-10-15 01:40:52,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:40:52,516 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2019-10-15 01:40:52,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:40:52,537 INFO L225 Difference]: With dead ends: 246 [2019-10-15 01:40:52,537 INFO L226 Difference]: Without dead ends: 157 [2019-10-15 01:40:52,543 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:40:52,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2019-10-15 01:40:52,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2019-10-15 01:40:52,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2019-10-15 01:40:52,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 279 transitions. [2019-10-15 01:40:52,638 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 279 transitions. Word has length 77 [2019-10-15 01:40:52,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:40:52,639 INFO L462 AbstractCegarLoop]: Abstraction has 157 states and 279 transitions. [2019-10-15 01:40:52,639 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:40:52,639 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 279 transitions. [2019-10-15 01:40:52,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-15 01:40:52,643 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:40:52,644 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:40:52,644 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:40:52,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:40:52,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1931072450, now seen corresponding path program 1 times [2019-10-15 01:40:52,645 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:40:52,645 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904304938] [2019-10-15 01:40:52,645 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:40:52,645 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:40:52,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:40:52,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:40:52,730 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:40:52,730 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904304938] [2019-10-15 01:40:52,731 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:40:52,731 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:40:52,731 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624561352] [2019-10-15 01:40:52,733 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:40:52,733 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:40:52,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:40:52,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:40:52,734 INFO L87 Difference]: Start difference. First operand 157 states and 279 transitions. Second operand 6 states. [2019-10-15 01:40:53,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:40:53,340 INFO L93 Difference]: Finished difference Result 402 states and 725 transitions. [2019-10-15 01:40:53,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:40:53,341 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2019-10-15 01:40:53,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:40:53,345 INFO L225 Difference]: With dead ends: 402 [2019-10-15 01:40:53,346 INFO L226 Difference]: Without dead ends: 250 [2019-10-15 01:40:53,348 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:40:53,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2019-10-15 01:40:53,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 238. [2019-10-15 01:40:53,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2019-10-15 01:40:53,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 407 transitions. [2019-10-15 01:40:53,370 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 407 transitions. Word has length 87 [2019-10-15 01:40:53,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:40:53,370 INFO L462 AbstractCegarLoop]: Abstraction has 238 states and 407 transitions. [2019-10-15 01:40:53,370 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:40:53,371 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 407 transitions. [2019-10-15 01:40:53,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-15 01:40:53,374 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:40:53,374 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:40:53,374 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:40:53,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:40:53,375 INFO L82 PathProgramCache]: Analyzing trace with hash 311901564, now seen corresponding path program 1 times [2019-10-15 01:40:53,375 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:40:53,375 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655329484] [2019-10-15 01:40:53,376 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:40:53,376 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:40:53,376 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:40:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:40:53,518 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:40:53,518 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655329484] [2019-10-15 01:40:53,518 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:40:53,519 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:40:53,519 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19478549] [2019-10-15 01:40:53,519 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:40:53,520 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:40:53,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:40:53,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:40:53,524 INFO L87 Difference]: Start difference. First operand 238 states and 407 transitions. Second operand 3 states. [2019-10-15 01:40:53,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:40:53,976 INFO L93 Difference]: Finished difference Result 700 states and 1240 transitions. [2019-10-15 01:40:53,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:40:53,978 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2019-10-15 01:40:53,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:40:53,983 INFO L225 Difference]: With dead ends: 700 [2019-10-15 01:40:53,983 INFO L226 Difference]: Without dead ends: 467 [2019-10-15 01:40:53,985 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:40:53,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2019-10-15 01:40:54,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 467. [2019-10-15 01:40:54,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2019-10-15 01:40:54,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 799 transitions. [2019-10-15 01:40:54,023 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 799 transitions. Word has length 88 [2019-10-15 01:40:54,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:40:54,024 INFO L462 AbstractCegarLoop]: Abstraction has 467 states and 799 transitions. [2019-10-15 01:40:54,024 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:40:54,024 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 799 transitions. [2019-10-15 01:40:54,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-15 01:40:54,029 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:40:54,029 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:40:54,030 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:40:54,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:40:54,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1021517488, now seen corresponding path program 1 times [2019-10-15 01:40:54,030 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:40:54,031 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376653921] [2019-10-15 01:40:54,031 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:40:54,031 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:40:54,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:40:54,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:40:54,192 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:40:54,193 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376653921] [2019-10-15 01:40:54,193 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:40:54,193 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:40:54,194 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644733082] [2019-10-15 01:40:54,195 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:40:54,196 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:40:54,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:40:54,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:40:54,196 INFO L87 Difference]: Start difference. First operand 467 states and 799 transitions. Second operand 7 states. [2019-10-15 01:40:55,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:40:55,065 INFO L93 Difference]: Finished difference Result 1222 states and 2241 transitions. [2019-10-15 01:40:55,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-15 01:40:55,066 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2019-10-15 01:40:55,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:40:55,074 INFO L225 Difference]: With dead ends: 1222 [2019-10-15 01:40:55,074 INFO L226 Difference]: Without dead ends: 760 [2019-10-15 01:40:55,077 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:40:55,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2019-10-15 01:40:55,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 649. [2019-10-15 01:40:55,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2019-10-15 01:40:55,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1028 transitions. [2019-10-15 01:40:55,179 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1028 transitions. Word has length 94 [2019-10-15 01:40:55,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:40:55,179 INFO L462 AbstractCegarLoop]: Abstraction has 649 states and 1028 transitions. [2019-10-15 01:40:55,179 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:40:55,180 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1028 transitions. [2019-10-15 01:40:55,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-15 01:40:55,185 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:40:55,185 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:40:55,186 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:40:55,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:40:55,186 INFO L82 PathProgramCache]: Analyzing trace with hash -251346753, now seen corresponding path program 1 times [2019-10-15 01:40:55,186 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:40:55,187 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081411481] [2019-10-15 01:40:55,187 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:40:55,187 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:40:55,187 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:40:55,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:40:55,282 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:40:55,282 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081411481] [2019-10-15 01:40:55,283 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947071543] [2019-10-15 01:40:55,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:40:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:40:55,389 INFO L256 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-15 01:40:55,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:40:55,510 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:40:55,510 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:40:55,768 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2019-10-15 01:40:55,827 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:40:55,831 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:40:55,833 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:40:55,834 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:40:55,836 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:40:55,838 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:40:55,839 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:40:55,972 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:40:55,972 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1218340183] [2019-10-15 01:40:56,030 INFO L162 IcfgInterpreter]: Started Sifa with 81 locations of interest [2019-10-15 01:40:56,030 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 01:40:56,037 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 01:40:56,045 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 01:40:56,046 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 01:40:56,410 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 98 for LOIs [2019-10-15 01:40:57,969 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 159 [2019-10-15 01:40:58,544 INFO L199 IcfgInterpreter]: Interpreting procedure calculate_output with input of size 140 for LOIs [2019-10-15 01:40:59,054 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2019-10-15 01:40:59,233 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2019-10-15 01:40:59,389 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2019-10-15 01:40:59,772 WARN L191 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2019-10-15 01:41:00,009 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2019-10-15 01:41:00,188 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2019-10-15 01:41:00,641 WARN L191 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2019-10-15 01:41:00,892 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2019-10-15 01:41:01,395 WARN L191 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2019-10-15 01:41:01,633 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2019-10-15 01:41:01,902 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-10-15 01:41:02,319 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 01:41:02,567 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 01:41:02,840 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2019-10-15 01:41:03,999 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 01:41:04,240 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 01:41:04,501 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-15 01:41:05,073 WARN L191 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 01:41:05,297 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 01:41:05,544 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-15 01:41:05,899 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 01:41:06,125 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 01:41:06,413 WARN L191 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2019-10-15 01:41:07,242 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 01:41:07,466 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 01:41:07,696 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-15 01:41:08,071 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 01:41:08,313 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 01:41:08,643 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 01:41:08,868 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 01:41:09,186 WARN L191 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2019-10-15 01:41:10,102 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 01:41:10,355 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 01:41:10,593 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2019-10-15 01:41:10,968 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 01:41:11,192 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 01:41:11,439 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2019-10-15 01:41:11,798 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 01:41:12,022 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 01:41:12,253 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-15 01:41:12,592 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 01:41:12,818 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 01:41:13,050 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-15 01:41:13,391 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 01:41:13,614 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 01:41:13,847 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-15 01:41:14,156 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 01:41:14,380 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 01:41:14,615 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2019-10-15 01:41:15,010 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 01:41:15,243 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 01:41:15,478 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-15 01:41:15,786 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:41:16,010 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:41:16,248 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2019-10-15 01:41:16,572 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:41:16,798 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:41:17,033 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-15 01:41:17,370 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:41:17,595 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:41:17,827 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-15 01:41:18,139 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:41:18,364 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:41:18,601 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-15 01:41:18,919 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:41:19,145 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:41:19,379 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-15 01:41:19,690 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:41:19,928 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:41:20,172 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2019-10-15 01:41:20,490 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:41:20,713 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:41:20,951 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-10-15 01:41:21,304 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:41:21,539 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:41:21,774 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-10-15 01:41:22,126 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:41:22,365 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:41:22,602 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2019-10-15 01:41:22,950 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:41:23,174 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:41:23,409 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2019-10-15 01:41:24,173 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:41:24,397 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:41:24,631 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-15 01:41:24,962 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:41:25,187 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:41:25,435 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2019-10-15 01:41:25,787 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:41:26,010 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:41:26,246 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-15 01:41:26,560 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:41:26,786 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:41:27,023 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-15 01:41:27,339 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:41:27,577 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:41:27,815 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2019-10-15 01:41:28,167 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:41:28,390 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:41:28,621 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-15 01:41:28,934 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:41:29,159 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-15 01:41:29,391 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2019-10-15 01:41:29,692 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 171