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/Problem15_label10_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 01:40:43,361 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 01:40:43,363 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 01:40:43,381 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 01:40:43,382 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 01:40:43,383 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 01:40:43,386 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 01:40:43,389 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 01:40:43,392 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 01:40:43,393 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 01:40:43,394 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 01:40:43,395 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 01:40:43,396 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 01:40:43,398 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 01:40:43,406 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 01:40:43,407 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 01:40:43,408 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 01:40:43,410 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 01:40:43,412 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 01:40:43,413 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 01:40:43,414 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 01:40:43,415 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 01:40:43,418 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 01:40:43,427 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 01:40:43,428 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 01:40:43,428 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 01:40:43,429 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 01:40:43,430 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 01:40:43,464 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 01:40:43,464 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 01:40:43,466 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 01:40:43,466 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 01:40:43,466 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 01:40:43,467 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 01:40:43,467 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 01:40:43,467 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 01:40:43,467 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 01:40:43,467 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 01:40:43,467 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 01:40:43,468 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 01:40:43,469 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 01:40:43,469 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 01:40:43,469 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 01:40:43,469 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 01:40:43,470 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 01:40:43,470 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 01:40:43,470 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 01:40:43,470 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 01:40:43,470 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 01:40:43,471 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 01:40:43,473 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 01:40:43,473 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 01:40:43,473 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:40:43,473 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 01:40:43,473 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 01:40:43,474 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 01:40:43,474 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 01:40:43,474 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 01:40:43,474 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 01:40:43,474 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 01:40:43,475 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 01:40:43,475 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 01:40:43,539 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 01:40:43,552 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 01:40:43,556 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 01:40:43,558 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 01:40:43,558 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 01:40:43,559 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label10_true-unreach-call.c [2018-10-24 01:40:43,618 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/12adece50/14d9e7de731c41468b7fcb912bb26fc8/FLAGfd7b91fce [2018-10-24 01:40:44,348 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 01:40:44,349 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label10_true-unreach-call.c [2018-10-24 01:40:44,372 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/12adece50/14d9e7de731c41468b7fcb912bb26fc8/FLAGfd7b91fce [2018-10-24 01:40:44,388 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/12adece50/14d9e7de731c41468b7fcb912bb26fc8 [2018-10-24 01:40:44,399 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 01:40:44,401 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 01:40:44,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 01:40:44,402 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 01:40:44,405 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 01:40:44,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:40:44" (1/1) ... [2018-10-24 01:40:44,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5392a41c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:40:44, skipping insertion in model container [2018-10-24 01:40:44,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:40:44" (1/1) ... [2018-10-24 01:40:44,418 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 01:40:44,502 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 01:40:45,236 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:40:45,241 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 01:40:45,552 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:40:45,573 INFO L193 MainTranslator]: Completed translation [2018-10-24 01:40:45,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:40:45 WrapperNode [2018-10-24 01:40:45,574 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 01:40:45,575 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 01:40:45,575 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 01:40:45,576 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 01:40:45,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:40:45" (1/1) ... [2018-10-24 01:40:45,632 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:40:45" (1/1) ... [2018-10-24 01:40:46,013 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 01:40:46,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 01:40:46,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 01:40:46,015 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 01:40:46,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:40:45" (1/1) ... [2018-10-24 01:40:46,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:40:45" (1/1) ... [2018-10-24 01:40:46,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:40:45" (1/1) ... [2018-10-24 01:40:46,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:40:45" (1/1) ... [2018-10-24 01:40:46,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:40:45" (1/1) ... [2018-10-24 01:40:46,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:40:45" (1/1) ... [2018-10-24 01:40:46,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:40:45" (1/1) ... [2018-10-24 01:40:46,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 01:40:46,250 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 01:40:46,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 01:40:46,250 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 01:40:46,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:40:45" (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 01:40:46,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 01:40:46,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 01:40:46,327 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 01:40:46,327 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 01:40:46,327 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 01:40:46,327 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 01:40:46,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 01:40:46,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 01:40:46,328 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 01:40:46,328 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 01:40:54,242 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 01:40:54,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:40:54 BoogieIcfgContainer [2018-10-24 01:40:54,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 01:40:54,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 01:40:54,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 01:40:54,249 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 01:40:54,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:40:44" (1/3) ... [2018-10-24 01:40:54,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b2b8cca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:40:54, skipping insertion in model container [2018-10-24 01:40:54,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:40:45" (2/3) ... [2018-10-24 01:40:54,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b2b8cca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:40:54, skipping insertion in model container [2018-10-24 01:40:54,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:40:54" (3/3) ... [2018-10-24 01:40:54,254 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label10_true-unreach-call.c [2018-10-24 01:40:54,262 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 01:40:54,271 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 01:40:54,289 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 01:40:54,331 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 01:40:54,331 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 01:40:54,332 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 01:40:54,332 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 01:40:54,332 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 01:40:54,332 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 01:40:54,332 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 01:40:54,332 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 01:40:54,365 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-24 01:40:54,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-24 01:40:54,374 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:40:54,375 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] [2018-10-24 01:40:54,379 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:40:54,384 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:40:54,385 INFO L82 PathProgramCache]: Analyzing trace with hash -98869727, now seen corresponding path program 1 times [2018-10-24 01:40:54,387 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:40:54,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:40:54,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:40:54,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:40:54,438 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:40:54,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:40:54,920 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-10-24 01:40:54,941 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 01:40:54,944 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:40:54,944 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 01:40:54,944 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:40:54,951 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 01:40:54,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 01:40:54,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:40:54,974 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-24 01:41:04,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:41:04,452 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-10-24 01:41:04,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 01:41:04,454 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2018-10-24 01:41:04,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:41:04,485 INFO L225 Difference]: With dead ends: 1558 [2018-10-24 01:41:04,486 INFO L226 Difference]: Without dead ends: 1114 [2018-10-24 01:41:04,496 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:41:04,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-10-24 01:41:04,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 1091. [2018-10-24 01:41:04,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2018-10-24 01:41:04,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1853 transitions. [2018-10-24 01:41:04,628 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1853 transitions. Word has length 41 [2018-10-24 01:41:04,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:41:04,629 INFO L481 AbstractCegarLoop]: Abstraction has 1091 states and 1853 transitions. [2018-10-24 01:41:04,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 01:41:04,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1853 transitions. [2018-10-24 01:41:04,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-24 01:41:04,637 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:41:04,638 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:41:04,638 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:41:04,639 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:41:04,639 INFO L82 PathProgramCache]: Analyzing trace with hash -2025595060, now seen corresponding path program 1 times [2018-10-24 01:41:04,639 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:41:04,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:41:04,640 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:41:04,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:41:04,641 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:41:04,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:41:04,962 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:41:04,962 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:41:04,963 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 01:41:04,963 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:41:04,965 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 01:41:04,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 01:41:04,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 01:41:04,966 INFO L87 Difference]: Start difference. First operand 1091 states and 1853 transitions. Second operand 5 states. [2018-10-24 01:41:14,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:41:14,058 INFO L93 Difference]: Finished difference Result 3240 states and 5580 transitions. [2018-10-24 01:41:14,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 01:41:14,061 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2018-10-24 01:41:14,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:41:14,084 INFO L225 Difference]: With dead ends: 3240 [2018-10-24 01:41:14,085 INFO L226 Difference]: Without dead ends: 2155 [2018-10-24 01:41:14,092 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 01:41:14,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2155 states. [2018-10-24 01:41:14,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2155 to 2114. [2018-10-24 01:41:14,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2114 states. [2018-10-24 01:41:14,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 3176 transitions. [2018-10-24 01:41:14,195 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 3176 transitions. Word has length 114 [2018-10-24 01:41:14,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:41:14,196 INFO L481 AbstractCegarLoop]: Abstraction has 2114 states and 3176 transitions. [2018-10-24 01:41:14,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 01:41:14,196 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 3176 transitions. [2018-10-24 01:41:14,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-24 01:41:14,201 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:41:14,201 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:41:14,202 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:41:14,202 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:41:14,202 INFO L82 PathProgramCache]: Analyzing trace with hash 565874524, now seen corresponding path program 1 times [2018-10-24 01:41:14,202 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:41:14,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:41:14,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:41:14,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:41:14,204 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:41:14,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:41:14,394 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:41:14,394 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:41:14,394 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 01:41:14,394 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:41:14,395 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 01:41:14,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 01:41:14,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:41:14,396 INFO L87 Difference]: Start difference. First operand 2114 states and 3176 transitions. Second operand 4 states. [2018-10-24 01:41:21,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:41:21,417 INFO L93 Difference]: Finished difference Result 7958 states and 12498 transitions. [2018-10-24 01:41:21,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 01:41:21,421 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2018-10-24 01:41:21,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:41:21,469 INFO L225 Difference]: With dead ends: 7958 [2018-10-24 01:41:21,470 INFO L226 Difference]: Without dead ends: 5850 [2018-10-24 01:41:21,497 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:41:21,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5850 states. [2018-10-24 01:41:21,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5850 to 5847. [2018-10-24 01:41:21,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5847 states. [2018-10-24 01:41:21,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5847 states to 5847 states and 8223 transitions. [2018-10-24 01:41:21,672 INFO L78 Accepts]: Start accepts. Automaton has 5847 states and 8223 transitions. Word has length 122 [2018-10-24 01:41:21,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:41:21,673 INFO L481 AbstractCegarLoop]: Abstraction has 5847 states and 8223 transitions. [2018-10-24 01:41:21,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 01:41:21,673 INFO L276 IsEmpty]: Start isEmpty. Operand 5847 states and 8223 transitions. [2018-10-24 01:41:21,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-24 01:41:21,678 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:41:21,678 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:41:21,679 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:41:21,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:41:21,679 INFO L82 PathProgramCache]: Analyzing trace with hash -2101547042, now seen corresponding path program 1 times [2018-10-24 01:41:21,679 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:41:21,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:41:21,681 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:41:21,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:41:21,681 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:41:21,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:41:21,995 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:41:21,996 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:41:21,996 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:41:21,997 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 154 with the following transitions: [2018-10-24 01:41:21,999 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [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], [301], [303], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 01:41:22,075 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:41:22,076 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:41:24,758 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:41:24,759 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 01:41:24,785 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:41:24,785 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:41:26,235 INFO L232 lantSequenceWeakener]: Weakened 148 states. On average, predicates are now at 78.07% of their original sizes. [2018-10-24 01:41:26,236 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:41:26,774 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:41:26,775 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:41:26,775 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2018-10-24 01:41:26,775 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:41:26,776 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 01:41:26,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 01:41:26,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 01:41:26,777 INFO L87 Difference]: Start difference. First operand 5847 states and 8223 transitions. Second operand 8 states. [2018-10-24 01:41:30,493 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:43:12,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:43:12,883 INFO L93 Difference]: Finished difference Result 11998 states and 16819 transitions. [2018-10-24 01:43:12,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 01:43:12,883 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 153 [2018-10-24 01:43:12,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:43:12,918 INFO L225 Difference]: With dead ends: 11998 [2018-10-24 01:43:12,919 INFO L226 Difference]: Without dead ends: 6157 [2018-10-24 01:43:12,949 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 154 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 01:43:12,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6157 states. [2018-10-24 01:43:13,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6157 to 6155. [2018-10-24 01:43:13,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6155 states. [2018-10-24 01:43:13,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6155 states to 6155 states and 8539 transitions. [2018-10-24 01:43:13,120 INFO L78 Accepts]: Start accepts. Automaton has 6155 states and 8539 transitions. Word has length 153 [2018-10-24 01:43:13,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:43:13,120 INFO L481 AbstractCegarLoop]: Abstraction has 6155 states and 8539 transitions. [2018-10-24 01:43:13,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 01:43:13,121 INFO L276 IsEmpty]: Start isEmpty. Operand 6155 states and 8539 transitions. [2018-10-24 01:43:13,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-10-24 01:43:13,128 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:43:13,129 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, 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, 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] [2018-10-24 01:43:13,129 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:43:13,129 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:43:13,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1992816428, now seen corresponding path program 1 times [2018-10-24 01:43:13,130 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:43:13,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:43:13,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:43:13,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:43:13,131 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:43:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:43:14,296 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:43:14,296 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:43:14,296 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:43:14,297 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 250 with the following transitions: [2018-10-24 01:43:14,297 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [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], [301], [303], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 01:43:14,303 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:43:14,304 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:43:15,539 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:43:24,485 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:43:24,485 INFO L272 AbstractInterpreter]: Visited 120 different actions 347 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 01:43:24,496 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:43:24,496 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:43:28,104 INFO L232 lantSequenceWeakener]: Weakened 98 states. On average, predicates are now at 78.57% of their original sizes. [2018-10-24 01:43:28,105 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-24 01:44:28,339 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 01:44:28,343 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 01:44:28,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:44:28 BoogieIcfgContainer [2018-10-24 01:44:28,344 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 01:44:28,345 INFO L168 Benchmark]: Toolchain (without parser) took 223945.01 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -129.9 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-24 01:44:28,346 INFO L168 Benchmark]: CDTParser took 0.19 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 01:44:28,347 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1172.91 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: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-10-24 01:44:28,350 INFO L168 Benchmark]: Boogie Procedure Inliner took 438.85 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -854.7 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2018-10-24 01:44:28,352 INFO L168 Benchmark]: Boogie Preprocessor took 235.05 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 29.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. [2018-10-24 01:44:28,352 INFO L168 Benchmark]: RCFGBuilder took 7993.10 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 291.0 MB). Peak memory consumption was 291.0 MB. Max. memory is 7.1 GB. [2018-10-24 01:44:28,353 INFO L168 Benchmark]: TraceAbstraction took 214098.36 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.8 GB in the beginning and 1.5 GB in the end (delta: 298.8 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-24 01:44:28,363 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 1172.91 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: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 438.85 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -854.7 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 235.05 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 29.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7993.10 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 291.0 MB). Peak memory consumption was 291.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214098.36 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.8 GB in the beginning and 1.5 GB in the end (delta: 298.8 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 109). Cancelled while BasicCegarLoop was analyzing trace of length 250 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 16 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 214.0s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 131.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1267 SDtfs, 3409 SDslu, 1121 SDs, 0 SdLazy, 7444 SolverSat, 1716 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 85.6s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 174 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6155occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 12.9s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9949547101449275 AbsIntWeakeningRatio, 0.115 AbsIntAvgWeakeningVarsNumRemoved, 391.745 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 4 MinimizatonAttempts, 69 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 430 NumberOfCodeBlocks, 430 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 426 ConstructedInterpolants, 0 QuantifiedInterpolants, 157611 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 68/102 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown