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-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label13_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 13:39:21,369 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 13:39:21,372 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 13:39:21,388 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 13:39:21,388 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 13:39:21,389 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 13:39:21,391 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 13:39:21,394 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 13:39:21,402 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 13:39:21,406 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 13:39:21,407 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 13:39:21,407 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 13:39:21,410 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 13:39:21,411 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 13:39:21,412 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 13:39:21,412 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 13:39:21,415 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 13:39:21,419 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 13:39:21,422 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 13:39:21,425 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 13:39:21,426 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 13:39:21,428 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 13:39:21,431 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 13:39:21,431 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 13:39:21,431 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 13:39:21,432 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 13:39:21,433 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 13:39:21,435 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 13:39:21,436 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 13:39:21,439 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 13:39:21,439 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 13:39:21,440 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 13:39:21,440 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 13:39:21,440 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 13:39:21,441 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 13:39:21,442 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 13:39:21,442 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 13:39:21,470 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 13:39:21,470 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 13:39:21,471 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 13:39:21,471 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 13:39:21,471 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 13:39:21,472 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 13:39:21,472 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 13:39:21,472 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 13:39:21,472 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 13:39:21,472 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 13:39:21,473 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 13:39:21,473 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 13:39:21,473 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 13:39:21,474 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 13:39:21,474 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 13:39:21,474 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 13:39:21,474 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 13:39:21,474 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 13:39:21,475 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 13:39:21,475 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 13:39:21,475 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 13:39:21,475 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 13:39:21,475 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 13:39:21,476 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 13:39:21,476 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 13:39:21,476 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 13:39:21,477 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 13:39:21,477 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 13:39:21,477 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 13:39:21,477 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 13:39:21,478 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 13:39:21,478 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 13:39:21,478 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 13:39:21,478 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 13:39:21,535 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 13:39:21,551 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 13:39:21,556 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 13:39:21,557 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 13:39:21,558 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 13:39:21,558 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label13_true-unreach-call.c [2018-10-27 13:39:21,619 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/84d5b898a/1fc08c52d7b04069a5cc616c89c370a3/FLAG30b4cca7c [2018-10-27 13:39:22,163 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 13:39:22,165 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label13_true-unreach-call.c [2018-10-27 13:39:22,180 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/84d5b898a/1fc08c52d7b04069a5cc616c89c370a3/FLAG30b4cca7c [2018-10-27 13:39:22,198 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/84d5b898a/1fc08c52d7b04069a5cc616c89c370a3 [2018-10-27 13:39:22,210 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 13:39:22,211 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 13:39:22,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 13:39:22,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 13:39:22,216 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 13:39:22,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:39:22" (1/1) ... [2018-10-27 13:39:22,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63bfd507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:39:22, skipping insertion in model container [2018-10-27 13:39:22,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:39:22" (1/1) ... [2018-10-27 13:39:22,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 13:39:22,282 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 13:39:22,685 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 13:39:22,695 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 13:39:22,898 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 13:39:22,919 INFO L193 MainTranslator]: Completed translation [2018-10-27 13:39:22,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:39:22 WrapperNode [2018-10-27 13:39:22,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 13:39:22,920 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 13:39:22,920 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 13:39:22,921 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 13:39:22,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:39:22" (1/1) ... [2018-10-27 13:39:22,950 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:39:22" (1/1) ... [2018-10-27 13:39:23,116 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 13:39:23,118 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 13:39:23,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 13:39:23,118 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 13:39:23,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:39:22" (1/1) ... [2018-10-27 13:39:23,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:39:22" (1/1) ... [2018-10-27 13:39:23,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:39:22" (1/1) ... [2018-10-27 13:39:23,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:39:22" (1/1) ... [2018-10-27 13:39:23,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:39:22" (1/1) ... [2018-10-27 13:39:23,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:39:22" (1/1) ... [2018-10-27 13:39:23,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:39:22" (1/1) ... [2018-10-27 13:39:23,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 13:39:23,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 13:39:23,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 13:39:23,226 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 13:39:23,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:39:22" (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 [2018-10-27 13:39:23,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 13:39:23,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 13:39:23,281 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 13:39:23,281 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 13:39:23,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 13:39:23,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 13:39:23,282 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 13:39:23,282 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 13:39:26,190 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 13:39:26,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:39:26 BoogieIcfgContainer [2018-10-27 13:39:26,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 13:39:26,192 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 13:39:26,192 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 13:39:26,195 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 13:39:26,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:39:22" (1/3) ... [2018-10-27 13:39:26,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c7aecb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:39:26, skipping insertion in model container [2018-10-27 13:39:26,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:39:22" (2/3) ... [2018-10-27 13:39:26,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c7aecb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:39:26, skipping insertion in model container [2018-10-27 13:39:26,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:39:26" (3/3) ... [2018-10-27 13:39:26,199 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label13_true-unreach-call.c [2018-10-27 13:39:26,209 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 13:39:26,217 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 13:39:26,235 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 13:39:26,272 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 13:39:26,273 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 13:39:26,273 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 13:39:26,273 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 13:39:26,273 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 13:39:26,274 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 13:39:26,275 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 13:39:26,275 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 13:39:26,307 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-27 13:39:26,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-27 13:39:26,317 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 13:39:26,318 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] [2018-10-27 13:39:26,320 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 13:39:26,326 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:39:26,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1833590460, now seen corresponding path program 1 times [2018-10-27 13:39:26,329 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 13:39:26,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:39:26,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 13:39:26,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:39:26,380 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 13:39:26,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 13:39:26,846 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 13:39:26,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 13:39:26,955 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 13:39:26,955 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 13:39:26,956 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 13:39:26,962 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 13:39:26,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 13:39:26,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 13:39:26,982 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-10-27 13:39:28,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 13:39:28,915 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-10-27 13:39:28,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 13:39:28,918 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2018-10-27 13:39:28,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 13:39:28,937 INFO L225 Difference]: With dead ends: 574 [2018-10-27 13:39:28,938 INFO L226 Difference]: Without dead ends: 356 [2018-10-27 13:39:28,945 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 [2018-10-27 13:39:28,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-10-27 13:39:29,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-10-27 13:39:29,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-27 13:39:29,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-10-27 13:39:29,025 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 62 [2018-10-27 13:39:29,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 13:39:29,026 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-10-27 13:39:29,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 13:39:29,026 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-10-27 13:39:29,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-27 13:39:29,037 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 13:39:29,038 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] [2018-10-27 13:39:29,038 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 13:39:29,039 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:39:29,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1187218136, now seen corresponding path program 1 times [2018-10-27 13:39:29,039 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 13:39:29,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:39:29,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 13:39:29,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:39:29,041 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 13:39:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 13:39:29,770 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 13:39:29,771 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 13:39:29,771 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 13:39:29,771 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 13:39:29,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 13:39:29,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 13:39:29,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 13:39:29,775 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 5 states. [2018-10-27 13:39:33,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 13:39:33,937 INFO L93 Difference]: Finished difference Result 1140 states and 2022 transitions. [2018-10-27 13:39:33,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 13:39:33,941 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2018-10-27 13:39:33,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 13:39:33,948 INFO L225 Difference]: With dead ends: 1140 [2018-10-27 13:39:33,949 INFO L226 Difference]: Without dead ends: 790 [2018-10-27 13:39:33,954 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-27 13:39:33,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2018-10-27 13:39:34,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 784. [2018-10-27 13:39:34,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2018-10-27 13:39:34,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1300 transitions. [2018-10-27 13:39:34,018 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1300 transitions. Word has length 182 [2018-10-27 13:39:34,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 13:39:34,019 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1300 transitions. [2018-10-27 13:39:34,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 13:39:34,020 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1300 transitions. [2018-10-27 13:39:34,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-10-27 13:39:34,026 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 13:39:34,027 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] [2018-10-27 13:39:34,027 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 13:39:34,027 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:39:34,028 INFO L82 PathProgramCache]: Analyzing trace with hash 853127875, now seen corresponding path program 1 times [2018-10-27 13:39:34,028 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 13:39:34,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:39:34,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 13:39:34,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:39:34,030 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 13:39:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 13:39:34,371 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 13:39:34,515 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 13:39:34,516 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 13:39:34,516 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 13:39:34,516 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 13:39:34,517 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 13:39:34,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 13:39:34,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 13:39:34,518 INFO L87 Difference]: Start difference. First operand 784 states and 1300 transitions. Second operand 6 states. [2018-10-27 13:39:39,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 13:39:39,807 INFO L93 Difference]: Finished difference Result 1975 states and 3367 transitions. [2018-10-27 13:39:39,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 13:39:39,808 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 189 [2018-10-27 13:39:39,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 13:39:39,816 INFO L225 Difference]: With dead ends: 1975 [2018-10-27 13:39:39,817 INFO L226 Difference]: Without dead ends: 1197 [2018-10-27 13:39:39,821 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 [2018-10-27 13:39:39,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2018-10-27 13:39:39,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1177. [2018-10-27 13:39:39,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1177 states. [2018-10-27 13:39:39,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1754 transitions. [2018-10-27 13:39:39,861 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1754 transitions. Word has length 189 [2018-10-27 13:39:39,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 13:39:39,861 INFO L481 AbstractCegarLoop]: Abstraction has 1177 states and 1754 transitions. [2018-10-27 13:39:39,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 13:39:39,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1754 transitions. [2018-10-27 13:39:39,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-10-27 13:39:39,868 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 13:39:39,868 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] [2018-10-27 13:39:39,869 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 13:39:39,869 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:39:39,869 INFO L82 PathProgramCache]: Analyzing trace with hash 751323799, now seen corresponding path program 1 times [2018-10-27 13:39:39,869 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 13:39:39,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:39:39,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 13:39:39,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:39:39,871 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 13:39:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 13:39:40,545 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2018-10-27 13:39:40,740 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 13:39:40,740 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 13:39:40,740 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 13:39:40,742 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 254 with the following transitions: [2018-10-27 13:39:40,744 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] [2018-10-27 13:39:40,806 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 13:39:40,806 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 13:39:41,306 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 13:39:42,225 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 13:39:42,228 INFO L272 AbstractInterpreter]: Visited 128 different actions 372 times. Merged at 5 different actions 10 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 13:39:42,274 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:39:42,274 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 13:39:43,255 INFO L227 lantSequenceWeakener]: Weakened 85 states. On average, predicates are now at 75.51% of their original sizes. [2018-10-27 13:39:43,256 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 13:39:45,200 INFO L415 sIntCurrentIteration]: We unified 252 AI predicates to 252 [2018-10-27 13:39:45,200 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 13:39:45,203 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 13:39:45,203 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [13] total 32 [2018-10-27 13:39:45,203 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 13:39:45,204 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-27 13:39:45,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-27 13:39:45,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2018-10-27 13:39:45,205 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