java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label30_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 19:43:12,167 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 19:43:12,170 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 19:43:12,184 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 19:43:12,186 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 19:43:12,187 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 19:43:12,189 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 19:43:12,192 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 19:43:12,193 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 19:43:12,196 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 19:43:12,199 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 19:43:12,199 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 19:43:12,200 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 19:43:12,201 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 19:43:12,203 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 19:43:12,212 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 19:43:12,213 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 19:43:12,217 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 19:43:12,219 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 19:43:12,224 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 19:43:12,225 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 19:43:12,228 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 19:43:12,232 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 19:43:12,243 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 19:43:12,243 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 19:43:12,244 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 19:43:12,246 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 19:43:12,246 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 19:43:12,278 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 19:43:12,278 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 19:43:12,282 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 19:43:12,282 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 19:43:12,282 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 19:43:12,283 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 19:43:12,283 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 19:43:12,283 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 19:43:12,283 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 19:43:12,284 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 19:43:12,284 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 19:43:12,284 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 19:43:12,285 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 19:43:12,285 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 19:43:12,285 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 19:43:12,285 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 19:43:12,287 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 19:43:12,287 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 19:43:12,287 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 19:43:12,288 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 19:43:12,288 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 19:43:12,288 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 19:43:12,288 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 19:43:12,289 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 19:43:12,289 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:43:12,289 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 19:43:12,289 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 19:43:12,290 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 19:43:12,290 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 19:43:12,290 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 19:43:12,290 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 19:43:12,290 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 19:43:12,291 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 19:43:12,291 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 19:43:12,374 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 19:43:12,395 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 19:43:12,400 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 19:43:12,403 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 19:43:12,403 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 19:43:12,405 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label30_true-unreach-call.c [2018-10-24 19:43:12,483 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/02bfc5956/cefd9abfb3b34d00ad86d80305da9ca0/FLAGe9f665cc8 [2018-10-24 19:43:13,198 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 19:43:13,199 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label30_true-unreach-call.c [2018-10-24 19:43:13,219 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/02bfc5956/cefd9abfb3b34d00ad86d80305da9ca0/FLAGe9f665cc8 [2018-10-24 19:43:13,235 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/02bfc5956/cefd9abfb3b34d00ad86d80305da9ca0 [2018-10-24 19:43:13,250 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 19:43:13,252 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 19:43:13,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 19:43:13,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 19:43:13,257 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 19:43:13,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:43:13" (1/1) ... [2018-10-24 19:43:13,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f637f1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:43:13, skipping insertion in model container [2018-10-24 19:43:13,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:43:13" (1/1) ... [2018-10-24 19:43:13,272 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 19:43:13,373 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 19:43:14,214 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:43:14,223 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 19:43:14,459 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:43:14,488 INFO L193 MainTranslator]: Completed translation [2018-10-24 19:43:14,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:43:14 WrapperNode [2018-10-24 19:43:14,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 19:43:14,491 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 19:43:14,491 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 19:43:14,491 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 19:43:14,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:43:14" (1/1) ... [2018-10-24 19:43:14,553 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:43:14" (1/1) ... [2018-10-24 19:43:14,806 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 19:43:14,807 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 19:43:14,807 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 19:43:14,807 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 19:43:14,819 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:43:14" (1/1) ... [2018-10-24 19:43:14,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:43:14" (1/1) ... [2018-10-24 19:43:14,832 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:43:14" (1/1) ... [2018-10-24 19:43:14,833 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:43:14" (1/1) ... [2018-10-24 19:43:14,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:43:14" (1/1) ... [2018-10-24 19:43:14,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:43:14" (1/1) ... [2018-10-24 19:43:14,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:43:14" (1/1) ... [2018-10-24 19:43:14,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 19:43:14,974 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 19:43:14,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 19:43:14,974 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 19:43:14,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:43:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 19:43:15,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 19:43:15,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 19:43:15,060 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 19:43:15,060 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 19:43:15,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 19:43:15,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 19:43:15,060 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 19:43:15,060 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 19:43:20,362 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 19:43:20,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:43:20 BoogieIcfgContainer [2018-10-24 19:43:20,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 19:43:20,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 19:43:20,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 19:43:20,371 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 19:43:20,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:43:13" (1/3) ... [2018-10-24 19:43:20,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca3958a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:43:20, skipping insertion in model container [2018-10-24 19:43:20,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:43:14" (2/3) ... [2018-10-24 19:43:20,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca3958a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:43:20, skipping insertion in model container [2018-10-24 19:43:20,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:43:20" (3/3) ... [2018-10-24 19:43:20,379 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label30_true-unreach-call.c [2018-10-24 19:43:20,392 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 19:43:20,405 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 19:43:20,428 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 19:43:20,473 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 19:43:20,474 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 19:43:20,474 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 19:43:20,474 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 19:43:20,474 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 19:43:20,474 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 19:43:20,475 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 19:43:20,475 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 19:43:20,506 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-24 19:43:20,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-24 19:43:20,526 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:43:20,528 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:43:20,531 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:43:20,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:43:20,539 INFO L82 PathProgramCache]: Analyzing trace with hash 2108174465, now seen corresponding path program 1 times [2018-10-24 19:43:20,542 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:43:20,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:43:20,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:43:20,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:43:20,606 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:43:20,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:43:21,460 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:43:21,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:43:21,681 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:43:21,682 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:43:21,682 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:43:21,690 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:43:21,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:43:21,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:43:21,713 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-10-24 19:43:23,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:43:23,996 INFO L93 Difference]: Finished difference Result 838 states and 1479 transitions. [2018-10-24 19:43:23,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:43:23,997 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 182 [2018-10-24 19:43:23,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:43:24,021 INFO L225 Difference]: With dead ends: 838 [2018-10-24 19:43:24,021 INFO L226 Difference]: Without dead ends: 524 [2018-10-24 19:43:24,031 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:43:24,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2018-10-24 19:43:24,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 522. [2018-10-24 19:43:24,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2018-10-24 19:43:24,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 890 transitions. [2018-10-24 19:43:24,152 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 890 transitions. Word has length 182 [2018-10-24 19:43:24,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:43:24,154 INFO L481 AbstractCegarLoop]: Abstraction has 522 states and 890 transitions. [2018-10-24 19:43:24,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:43:24,154 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 890 transitions. [2018-10-24 19:43:24,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-24 19:43:24,171 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:43:24,171 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:43:24,172 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:43:24,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:43:24,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1443247960, now seen corresponding path program 1 times [2018-10-24 19:43:24,173 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:43:24,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:43:24,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:43:24,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:43:24,175 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:43:24,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:43:24,524 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-24 19:43:24,604 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:43:24,604 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:43:24,605 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:43:24,605 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:43:24,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:43:24,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:43:24,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:43:24,685 INFO L87 Difference]: Start difference. First operand 522 states and 890 transitions. Second operand 6 states. [2018-10-24 19:43:28,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:43:28,057 INFO L93 Difference]: Finished difference Result 1581 states and 2759 transitions. [2018-10-24 19:43:28,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 19:43:28,064 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 192 [2018-10-24 19:43:28,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:43:28,076 INFO L225 Difference]: With dead ends: 1581 [2018-10-24 19:43:28,076 INFO L226 Difference]: Without dead ends: 1065 [2018-10-24 19:43:28,079 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:43:28,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2018-10-24 19:43:28,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1023. [2018-10-24 19:43:28,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2018-10-24 19:43:28,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1733 transitions. [2018-10-24 19:43:28,160 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1733 transitions. Word has length 192 [2018-10-24 19:43:28,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:43:28,161 INFO L481 AbstractCegarLoop]: Abstraction has 1023 states and 1733 transitions. [2018-10-24 19:43:28,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:43:28,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1733 transitions. [2018-10-24 19:43:28,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-10-24 19:43:28,167 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:43:28,171 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:43:28,172 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:43:28,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:43:28,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1778495237, now seen corresponding path program 1 times [2018-10-24 19:43:28,173 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:43:28,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:43:28,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:43:28,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:43:28,175 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:43:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:43:28,546 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:43:28,547 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:43:28,547 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:43:28,547 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:43:28,548 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:43:28,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:43:28,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:43:28,549 INFO L87 Difference]: Start difference. First operand 1023 states and 1733 transitions. Second operand 3 states. [2018-10-24 19:43:31,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:43:31,318 INFO L93 Difference]: Finished difference Result 2887 states and 5063 transitions. [2018-10-24 19:43:31,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:43:31,327 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 195 [2018-10-24 19:43:31,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:43:31,344 INFO L225 Difference]: With dead ends: 2887 [2018-10-24 19:43:31,344 INFO L226 Difference]: Without dead ends: 1870 [2018-10-24 19:43:31,351 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:43:31,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2018-10-24 19:43:31,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 1865. [2018-10-24 19:43:31,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1865 states. [2018-10-24 19:43:31,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1865 states to 1865 states and 3055 transitions. [2018-10-24 19:43:31,420 INFO L78 Accepts]: Start accepts. Automaton has 1865 states and 3055 transitions. Word has length 195 [2018-10-24 19:43:31,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:43:31,421 INFO L481 AbstractCegarLoop]: Abstraction has 1865 states and 3055 transitions. [2018-10-24 19:43:31,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:43:31,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1865 states and 3055 transitions. [2018-10-24 19:43:31,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-10-24 19:43:31,430 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:43:31,430 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:43:31,431 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:43:31,431 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:43:31,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1213324138, now seen corresponding path program 1 times [2018-10-24 19:43:31,432 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:43:31,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:43:31,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:43:31,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:43:31,433 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:43:31,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:43:31,738 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:43:31,738 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:43:31,739 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:43:31,739 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:43:31,740 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:43:31,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:43:31,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:43:31,741 INFO L87 Difference]: Start difference. First operand 1865 states and 3055 transitions. Second operand 3 states. [2018-10-24 19:43:33,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:43:33,470 INFO L93 Difference]: Finished difference Result 5425 states and 9196 transitions. [2018-10-24 19:43:33,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:43:33,475 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 215 [2018-10-24 19:43:33,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:43:33,500 INFO L225 Difference]: With dead ends: 5425 [2018-10-24 19:43:33,501 INFO L226 Difference]: Without dead ends: 3566 [2018-10-24 19:43:33,513 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:43:33,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3566 states. [2018-10-24 19:43:33,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3566 to 3544. [2018-10-24 19:43:33,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3544 states. [2018-10-24 19:43:33,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3544 states to 3544 states and 5788 transitions. [2018-10-24 19:43:33,658 INFO L78 Accepts]: Start accepts. Automaton has 3544 states and 5788 transitions. Word has length 215 [2018-10-24 19:43:33,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:43:33,659 INFO L481 AbstractCegarLoop]: Abstraction has 3544 states and 5788 transitions. [2018-10-24 19:43:33,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:43:33,659 INFO L276 IsEmpty]: Start isEmpty. Operand 3544 states and 5788 transitions. [2018-10-24 19:43:33,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-10-24 19:43:33,680 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:43:33,681 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:43:33,681 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:43:33,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:43:33,682 INFO L82 PathProgramCache]: Analyzing trace with hash -647167813, now seen corresponding path program 1 times [2018-10-24 19:43:33,682 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:43:33,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:43:33,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:43:33,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:43:33,683 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:43:33,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:43:34,003 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:43:34,004 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:43:34,004 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:43:34,004 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:43:34,005 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:43:34,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:43:34,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:43:34,006 INFO L87 Difference]: Start difference. First operand 3544 states and 5788 transitions. Second operand 6 states. [2018-10-24 19:43:37,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:43:37,008 INFO L93 Difference]: Finished difference Result 7596 states and 12544 transitions. [2018-10-24 19:43:37,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:43:37,013 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 241 [2018-10-24 19:43:37,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:43:37,040 INFO L225 Difference]: With dead ends: 7596 [2018-10-24 19:43:37,041 INFO L226 Difference]: Without dead ends: 4058 [2018-10-24 19:43:37,067 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:43:37,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4058 states. [2018-10-24 19:43:37,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4058 to 3727. [2018-10-24 19:43:37,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3727 states. [2018-10-24 19:43:37,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3727 states to 3727 states and 5669 transitions. [2018-10-24 19:43:37,244 INFO L78 Accepts]: Start accepts. Automaton has 3727 states and 5669 transitions. Word has length 241 [2018-10-24 19:43:37,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:43:37,245 INFO L481 AbstractCegarLoop]: Abstraction has 3727 states and 5669 transitions. [2018-10-24 19:43:37,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:43:37,245 INFO L276 IsEmpty]: Start isEmpty. Operand 3727 states and 5669 transitions. [2018-10-24 19:43:37,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-10-24 19:43:37,261 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:43:37,262 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:43:37,262 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:43:37,262 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:43:37,263 INFO L82 PathProgramCache]: Analyzing trace with hash 427925431, now seen corresponding path program 1 times [2018-10-24 19:43:37,263 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:43:37,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:43:37,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:43:37,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:43:37,267 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:43:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:43:37,936 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-24 19:43:38,192 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:43:38,193 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:43:38,193 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:43:38,195 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 255 with the following transitions: [2018-10-24 19:43:38,198 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [240], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [917], [919], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 19:43:38,332 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:43:38,333 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-24 19:47:45,003 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-24 19:47:45,004 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-24 19:47:45,006 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 19:47:45,006 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:47:45,006 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 19:47:45,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:47:45,016 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 19:47:45,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:47:45,305 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 19:47:45,345 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 19:47:45,547 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 19:47:45,547 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:47:45,553 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:47:45,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:47:45 BoogieIcfgContainer [2018-10-24 19:47:45,554 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:47:45,555 INFO L168 Benchmark]: Toolchain (without parser) took 272304.69 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 814.7 MB. Max. memory is 7.1 GB. [2018-10-24 19:47:45,557 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 19:47:45,558 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1237.29 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-24 19:47:45,559 INFO L168 Benchmark]: Boogie Procedure Inliner took 316.09 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -876.6 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-24 19:47:45,563 INFO L168 Benchmark]: Boogie Preprocessor took 166.61 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-10-24 19:47:45,566 INFO L168 Benchmark]: RCFGBuilder took 5390.70 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 257.8 MB). Peak memory consumption was 257.8 MB. Max. memory is 7.1 GB. [2018-10-24 19:47:45,567 INFO L168 Benchmark]: TraceAbstraction took 265188.16 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 1.9 GB in the beginning and 2.8 GB in the end (delta: -859.9 MB). Peak memory consumption was 584.5 MB. Max. memory is 7.1 GB. [2018-10-24 19:47:45,578 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1237.29 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 316.09 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -876.6 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 166.61 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5390.70 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 257.8 MB). Peak memory consumption was 257.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 265188.16 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 1.9 GB in the beginning and 2.8 GB in the end (delta: -859.9 MB). Peak memory consumption was 584.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1560]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1560). Cancelled while BasicCegarLoop was analyzing trace of length 255 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 265.0s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 13.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1546 SDtfs, 2618 SDslu, 654 SDs, 0 SdLazy, 4730 SolverSat, 911 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3727occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 246.8s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 402 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 1025 NumberOfCodeBlocks, 1025 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 1020 ConstructedInterpolants, 0 QuantifiedInterpolants, 554140 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 103/103 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown