java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label13_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 14:14:35,376 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 14:14:35,379 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 14:14:35,396 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 14:14:35,397 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 14:14:35,398 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 14:14:35,399 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 14:14:35,402 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 14:14:35,404 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 14:14:35,405 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 14:14:35,413 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 14:14:35,414 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 14:14:35,415 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 14:14:35,419 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 14:14:35,420 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 14:14:35,421 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 14:14:35,424 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 14:14:35,425 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 14:14:35,427 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 14:14:35,431 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 14:14:35,432 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 14:14:35,436 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 14:14:35,438 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 14:14:35,439 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 14:14:35,439 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 14:14:35,440 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 14:14:35,441 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 14:14:35,441 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 14:14:35,442 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 14:14:35,443 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 14:14:35,443 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 14:14:35,444 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 14:14:35,444 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 14:14:35,444 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 14:14:35,445 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 14:14:35,446 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 14:14:35,446 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 14:14:35,467 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 14:14:35,467 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 14:14:35,468 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 14:14:35,468 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 14:14:35,469 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 14:14:35,469 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 14:14:35,469 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 14:14:35,469 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 14:14:35,469 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 14:14:35,470 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 14:14:35,470 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 14:14:35,470 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 14:14:35,471 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 14:14:35,471 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 14:14:35,471 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 14:14:35,471 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 14:14:35,471 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 14:14:35,472 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 14:14:35,472 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 14:14:35,472 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 14:14:35,472 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 14:14:35,472 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 14:14:35,473 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 14:14:35,473 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 14:14:35,473 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:14:35,473 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 14:14:35,473 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 14:14:35,474 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 14:14:35,474 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 14:14:35,474 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 14:14:35,474 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 14:14:35,474 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 14:14:35,474 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 14:14:35,475 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 14:14:35,518 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 14:14:35,533 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 14:14:35,538 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 14:14:35,539 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 14:14:35,540 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 14:14:35,541 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label13_true-unreach-call.c [2018-11-07 14:14:35,606 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e59c02fc/d12cf7e0931e42da8abfd655012a8264/FLAG5ff20bceb [2018-11-07 14:14:36,172 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 14:14:36,172 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label13_true-unreach-call.c [2018-11-07 14:14:36,188 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e59c02fc/d12cf7e0931e42da8abfd655012a8264/FLAG5ff20bceb [2018-11-07 14:14:36,216 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e59c02fc/d12cf7e0931e42da8abfd655012a8264 [2018-11-07 14:14:36,229 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 14:14:36,231 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 14:14:36,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 14:14:36,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 14:14:36,236 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 14:14:36,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:14:36" (1/1) ... [2018-11-07 14:14:36,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c6cb6b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:36, skipping insertion in model container [2018-11-07 14:14:36,241 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:14:36" (1/1) ... [2018-11-07 14:14:36,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 14:14:36,324 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 14:14:36,853 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:14:36,858 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 14:14:36,998 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:14:37,016 INFO L193 MainTranslator]: Completed translation [2018-11-07 14:14:37,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:37 WrapperNode [2018-11-07 14:14:37,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 14:14:37,017 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 14:14:37,018 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 14:14:37,018 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 14:14:37,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:37" (1/1) ... [2018-11-07 14:14:37,057 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:37" (1/1) ... [2018-11-07 14:14:37,181 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 14:14:37,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 14:14:37,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 14:14:37,185 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 14:14:37,200 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:37" (1/1) ... [2018-11-07 14:14:37,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:37" (1/1) ... [2018-11-07 14:14:37,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:37" (1/1) ... [2018-11-07 14:14:37,213 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:37" (1/1) ... [2018-11-07 14:14:37,264 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:37" (1/1) ... [2018-11-07 14:14:37,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:37" (1/1) ... [2018-11-07 14:14:37,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:37" (1/1) ... [2018-11-07 14:14:37,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 14:14:37,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 14:14:37,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 14:14:37,308 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 14:14:37,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:37" (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 [2018-11-07 14:14:37,374 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 14:14:37,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 14:14:37,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 14:14:37,375 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 14:14:37,375 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 14:14:37,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 14:14:37,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 14:14:37,376 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 14:14:37,376 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 14:14:40,303 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 14:14:40,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:14:40 BoogieIcfgContainer [2018-11-07 14:14:40,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 14:14:40,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 14:14:40,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 14:14:40,309 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 14:14:40,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:14:36" (1/3) ... [2018-11-07 14:14:40,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ba7028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:14:40, skipping insertion in model container [2018-11-07 14:14:40,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:37" (2/3) ... [2018-11-07 14:14:40,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ba7028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:14:40, skipping insertion in model container [2018-11-07 14:14:40,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:14:40" (3/3) ... [2018-11-07 14:14:40,313 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label13_true-unreach-call.c [2018-11-07 14:14:40,323 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 14:14:40,331 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 14:14:40,346 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 14:14:40,385 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 14:14:40,386 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 14:14:40,386 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 14:14:40,386 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 14:14:40,386 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 14:14:40,387 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 14:14:40,387 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 14:14:40,387 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 14:14:40,414 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-11-07 14:14:40,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-11-07 14:14:40,424 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:14:40,426 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] [2018-11-07 14:14:40,428 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:14:40,434 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:14:40,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1833590460, now seen corresponding path program 1 times [2018-11-07 14:14:40,437 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:14:40,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:14:40,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:14:40,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:14:40,493 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:14:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:14:40,995 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:14:41,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:14:41,055 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:14:41,056 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 14:14:41,056 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:14:41,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 14:14:41,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 14:14:41,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 14:14:41,081 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-11-07 14:14:43,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:14:43,037 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-11-07 14:14:43,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 14:14:43,040 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2018-11-07 14:14:43,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:14:43,061 INFO L225 Difference]: With dead ends: 574 [2018-11-07 14:14:43,062 INFO L226 Difference]: Without dead ends: 356 [2018-11-07 14:14:43,074 INFO L604 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 [2018-11-07 14:14:43,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-11-07 14:14:43,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-11-07 14:14:43,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-11-07 14:14:43,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-11-07 14:14:43,165 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 62 [2018-11-07 14:14:43,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:14:43,166 INFO L480 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-11-07 14:14:43,166 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 14:14:43,167 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-11-07 14:14:43,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-11-07 14:14:43,176 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:14:43,177 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:14:43,177 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:14:43,178 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:14:43,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1187218136, now seen corresponding path program 1 times [2018-11-07 14:14:43,178 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:14:43,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:14:43,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:14:43,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:14:43,180 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:14:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:14:43,695 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:14:43,696 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:14:43,696 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 14:14:43,696 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:14:43,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 14:14:43,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 14:14:43,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 14:14:43,699 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 5 states. [2018-11-07 14:14:46,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:14:46,572 INFO L93 Difference]: Finished difference Result 1140 states and 2022 transitions. [2018-11-07 14:14:46,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:14:46,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2018-11-07 14:14:46,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:14:46,585 INFO L225 Difference]: With dead ends: 1140 [2018-11-07 14:14:46,585 INFO L226 Difference]: Without dead ends: 790 [2018-11-07 14:14:46,590 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-07 14:14:46,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2018-11-07 14:14:46,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 784. [2018-11-07 14:14:46,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2018-11-07 14:14:46,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1300 transitions. [2018-11-07 14:14:46,648 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1300 transitions. Word has length 182 [2018-11-07 14:14:46,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:14:46,649 INFO L480 AbstractCegarLoop]: Abstraction has 784 states and 1300 transitions. [2018-11-07 14:14:46,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 14:14:46,649 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1300 transitions. [2018-11-07 14:14:46,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-11-07 14:14:46,656 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:14:46,656 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:14:46,656 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:14:46,657 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:14:46,657 INFO L82 PathProgramCache]: Analyzing trace with hash 853127875, now seen corresponding path program 1 times [2018-11-07 14:14:46,657 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:14:46,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:14:46,659 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:14:46,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:14:46,659 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:14:46,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:14:47,035 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:14:47,546 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:14:47,547 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:14:47,547 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:14:47,547 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:14:47,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:14:47,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:14:47,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:14:47,551 INFO L87 Difference]: Start difference. First operand 784 states and 1300 transitions. Second operand 6 states. [2018-11-07 14:14:51,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:14:51,791 INFO L93 Difference]: Finished difference Result 1975 states and 3367 transitions. [2018-11-07 14:14:51,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:14:51,791 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 189 [2018-11-07 14:14:51,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:14:51,806 INFO L225 Difference]: With dead ends: 1975 [2018-11-07 14:14:51,807 INFO L226 Difference]: Without dead ends: 1197 [2018-11-07 14:14:51,812 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 14:14:51,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2018-11-07 14:14:51,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1177. [2018-11-07 14:14:51,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1177 states. [2018-11-07 14:14:51,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1754 transitions. [2018-11-07 14:14:51,875 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1754 transitions. Word has length 189 [2018-11-07 14:14:51,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:14:51,875 INFO L480 AbstractCegarLoop]: Abstraction has 1177 states and 1754 transitions. [2018-11-07 14:14:51,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:14:51,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1754 transitions. [2018-11-07 14:14:51,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-11-07 14:14:51,885 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:14:51,885 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:14:51,886 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:14:51,886 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:14:51,886 INFO L82 PathProgramCache]: Analyzing trace with hash 751323799, now seen corresponding path program 1 times [2018-11-07 14:14:51,886 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:14:51,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:14:51,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:14:51,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:14:51,889 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:14:51,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:14:52,647 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:14:52,648 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:14:52,648 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:14:52,649 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 254 with the following transitions: [2018-11-07 14:14:52,651 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [397], [399], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [694], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-07 14:14:52,702 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:14:52,702 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:14:53,240 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 14:14:54,176 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:14:54,178 INFO L272 AbstractInterpreter]: Visited 128 different actions 371 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 14:14:54,232 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:14:54,232 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:14:55,212 INFO L227 lantSequenceWeakener]: Weakened 85 states. On average, predicates are now at 75.53% of their original sizes. [2018-11-07 14:14:55,212 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:14:56,611 INFO L415 sIntCurrentIteration]: We unified 252 AI predicates to 252 [2018-11-07 14:14:56,612 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:14:56,613 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:14:56,613 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [13] total 32 [2018-11-07 14:14:56,613 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:14:56,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-07 14:14:56,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-07 14:14:56,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2018-11-07 14:14:56,615 INFO L87 Difference]: Start difference. First operand 1177 states and 1754 transitions. Second operand 21 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown