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/Problem02_label42_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 19:31:27,562 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 19:31:27,564 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 19:31:27,577 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 19:31:27,577 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 19:31:27,578 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 19:31:27,580 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 19:31:27,581 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 19:31:27,583 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 19:31:27,584 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 19:31:27,585 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 19:31:27,585 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 19:31:27,586 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 19:31:27,587 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 19:31:27,588 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 19:31:27,589 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 19:31:27,590 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 19:31:27,592 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 19:31:27,594 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 19:31:27,595 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 19:31:27,596 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 19:31:27,597 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 19:31:27,600 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 19:31:27,614 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 19:31:27,646 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 19:31:27,646 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 19:31:27,647 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 19:31:27,647 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 19:31:27,648 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 19:31:27,648 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 19:31:27,648 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 19:31:27,649 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 19:31:27,649 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 19:31:27,649 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 19:31:27,649 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 19:31:27,649 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 19:31:27,650 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 19:31:27,650 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 19:31:27,652 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 19:31:27,652 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 19:31:27,652 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 19:31:27,652 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 19:31:27,652 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 19:31:27,653 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 19:31:27,653 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 19:31:27,653 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 19:31:27,653 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 19:31:27,653 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 19:31:27,654 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:31:27,655 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 19:31:27,655 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 19:31:27,656 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 19:31:27,656 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 19:31:27,656 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 19:31:27,656 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 19:31:27,656 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 19:31:27,657 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 19:31:27,657 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 19:31:27,720 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 19:31:27,733 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 19:31:27,737 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 19:31:27,739 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 19:31:27,739 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 19:31:27,740 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label42_true-unreach-call_false-termination.c [2018-10-24 19:31:27,803 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/dc9d1aece/0d24705579134bcdaab42be92aa7bc3a/FLAG415129257 [2018-10-24 19:31:28,385 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 19:31:28,389 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label42_true-unreach-call_false-termination.c [2018-10-24 19:31:28,407 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/dc9d1aece/0d24705579134bcdaab42be92aa7bc3a/FLAG415129257 [2018-10-24 19:31:28,430 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/dc9d1aece/0d24705579134bcdaab42be92aa7bc3a [2018-10-24 19:31:28,445 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 19:31:28,450 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 19:31:28,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 19:31:28,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 19:31:28,457 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 19:31:28,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:31:28" (1/1) ... [2018-10-24 19:31:28,462 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68109397 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:31:28, skipping insertion in model container [2018-10-24 19:31:28,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:31:28" (1/1) ... [2018-10-24 19:31:28,473 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 19:31:28,553 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 19:31:29,031 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:31:29,036 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 19:31:29,174 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:31:29,195 INFO L193 MainTranslator]: Completed translation [2018-10-24 19:31:29,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:31:29 WrapperNode [2018-10-24 19:31:29,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 19:31:29,197 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 19:31:29,197 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 19:31:29,197 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 19:31:29,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:31:29" (1/1) ... [2018-10-24 19:31:29,236 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:31:29" (1/1) ... [2018-10-24 19:31:29,389 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 19:31:29,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 19:31:29,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 19:31:29,390 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 19:31:29,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:31:29" (1/1) ... [2018-10-24 19:31:29,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:31:29" (1/1) ... [2018-10-24 19:31:29,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:31:29" (1/1) ... [2018-10-24 19:31:29,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:31:29" (1/1) ... [2018-10-24 19:31:29,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:31:29" (1/1) ... [2018-10-24 19:31:29,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:31:29" (1/1) ... [2018-10-24 19:31:29,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:31:29" (1/1) ... [2018-10-24 19:31:29,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 19:31:29,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 19:31:29,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 19:31:29,463 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 19:31:29,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:31:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:31:29,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 19:31:29,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 19:31:29,523 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 19:31:29,523 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 19:31:29,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 19:31:29,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 19:31:29,523 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 19:31:29,524 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 19:31:33,304 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 19:31:33,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:31:33 BoogieIcfgContainer [2018-10-24 19:31:33,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 19:31:33,306 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 19:31:33,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 19:31:33,313 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 19:31:33,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:31:28" (1/3) ... [2018-10-24 19:31:33,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f0ea61c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:31:33, skipping insertion in model container [2018-10-24 19:31:33,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:31:29" (2/3) ... [2018-10-24 19:31:33,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f0ea61c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:31:33, skipping insertion in model container [2018-10-24 19:31:33,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:31:33" (3/3) ... [2018-10-24 19:31:33,319 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label42_true-unreach-call_false-termination.c [2018-10-24 19:31:33,332 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 19:31:33,345 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 19:31:33,364 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 19:31:33,417 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 19:31:33,417 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 19:31:33,417 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 19:31:33,418 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 19:31:33,418 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 19:31:33,418 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 19:31:33,418 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 19:31:33,418 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 19:31:33,455 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-24 19:31:33,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-24 19:31:33,472 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:31:33,473 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:31:33,476 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:31:33,483 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:31:33,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1675819633, now seen corresponding path program 1 times [2018-10-24 19:31:33,486 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:31:33,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:31:33,543 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:31:33,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:31:33,544 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:31:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:31:34,189 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:31:34,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:31:34,325 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:31:34,326 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:31:34,326 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:31:34,333 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:31:34,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:31:34,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:31:34,352 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-10-24 19:31:35,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:31:35,680 INFO L93 Difference]: Finished difference Result 621 states and 1059 transitions. [2018-10-24 19:31:35,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:31:35,683 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2018-10-24 19:31:35,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:31:35,705 INFO L225 Difference]: With dead ends: 621 [2018-10-24 19:31:35,705 INFO L226 Difference]: Without dead ends: 382 [2018-10-24 19:31:35,713 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:31:35,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-10-24 19:31:35,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2018-10-24 19:31:35,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2018-10-24 19:31:35,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 608 transitions. [2018-10-24 19:31:35,794 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 608 transitions. Word has length 107 [2018-10-24 19:31:35,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:31:35,795 INFO L481 AbstractCegarLoop]: Abstraction has 382 states and 608 transitions. [2018-10-24 19:31:35,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:31:35,795 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 608 transitions. [2018-10-24 19:31:35,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-24 19:31:35,801 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:31:35,802 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:31:35,802 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:31:35,802 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:31:35,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1274103906, now seen corresponding path program 1 times [2018-10-24 19:31:35,803 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:31:35,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:31:35,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:31:35,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:31:35,805 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:31:35,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:31:35,989 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:31:35,989 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:31:35,990 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:31:35,990 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:31:35,992 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:31:35,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:31:35,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:31:35,993 INFO L87 Difference]: Start difference. First operand 382 states and 608 transitions. Second operand 3 states. [2018-10-24 19:31:37,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:31:37,248 INFO L93 Difference]: Finished difference Result 1057 states and 1749 transitions. [2018-10-24 19:31:37,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:31:37,249 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 116 [2018-10-24 19:31:37,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:31:37,259 INFO L225 Difference]: With dead ends: 1057 [2018-10-24 19:31:37,259 INFO L226 Difference]: Without dead ends: 681 [2018-10-24 19:31:37,264 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:31:37,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2018-10-24 19:31:37,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 676. [2018-10-24 19:31:37,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 676 states. [2018-10-24 19:31:37,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 1044 transitions. [2018-10-24 19:31:37,307 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 1044 transitions. Word has length 116 [2018-10-24 19:31:37,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:31:37,307 INFO L481 AbstractCegarLoop]: Abstraction has 676 states and 1044 transitions. [2018-10-24 19:31:37,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:31:37,308 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 1044 transitions. [2018-10-24 19:31:37,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-24 19:31:37,315 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:31:37,315 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:31:37,319 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:31:37,319 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:31:37,319 INFO L82 PathProgramCache]: Analyzing trace with hash 63225070, now seen corresponding path program 1 times [2018-10-24 19:31:37,320 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:31:37,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:31:37,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:31:37,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:31:37,321 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:31:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:31:38,154 WARN L179 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 22 [2018-10-24 19:31:38,457 WARN L179 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2018-10-24 19:31:38,549 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:31:38,549 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:31:38,550 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 19:31:38,550 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:31:38,550 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 19:31:38,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 19:31:38,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:31:38,551 INFO L87 Difference]: Start difference. First operand 676 states and 1044 transitions. Second operand 5 states. [2018-10-24 19:31:40,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:31:40,257 INFO L93 Difference]: Finished difference Result 1491 states and 2375 transitions. [2018-10-24 19:31:40,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 19:31:40,258 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2018-10-24 19:31:40,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:31:40,265 INFO L225 Difference]: With dead ends: 1491 [2018-10-24 19:31:40,266 INFO L226 Difference]: Without dead ends: 675 [2018-10-24 19:31:40,269 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:31:40,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2018-10-24 19:31:40,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 675. [2018-10-24 19:31:40,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 675 states. [2018-10-24 19:31:40,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1032 transitions. [2018-10-24 19:31:40,310 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1032 transitions. Word has length 122 [2018-10-24 19:31:40,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:31:40,311 INFO L481 AbstractCegarLoop]: Abstraction has 675 states and 1032 transitions. [2018-10-24 19:31:40,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 19:31:40,311 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1032 transitions. [2018-10-24 19:31:40,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-24 19:31:40,315 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:31:40,315 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:31:40,315 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:31:40,315 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:31:40,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1081888773, now seen corresponding path program 1 times [2018-10-24 19:31:40,316 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:31:40,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:31:40,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:31:40,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:31:40,317 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:31:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:31:40,593 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:31:40,777 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:31:40,778 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:31:40,778 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:31:40,778 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:31:40,779 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:31:40,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:31:40,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:31:40,780 INFO L87 Difference]: Start difference. First operand 675 states and 1032 transitions. Second operand 6 states. [2018-10-24 19:31:43,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:31:43,149 INFO L93 Difference]: Finished difference Result 1489 states and 2269 transitions. [2018-10-24 19:31:43,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:31:43,153 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2018-10-24 19:31:43,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:31:43,160 INFO L225 Difference]: With dead ends: 1489 [2018-10-24 19:31:43,161 INFO L226 Difference]: Without dead ends: 820 [2018-10-24 19:31:43,164 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:31:43,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2018-10-24 19:31:43,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 810. [2018-10-24 19:31:43,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 810 states. [2018-10-24 19:31:43,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1137 transitions. [2018-10-24 19:31:43,209 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1137 transitions. Word has length 130 [2018-10-24 19:31:43,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:31:43,210 INFO L481 AbstractCegarLoop]: Abstraction has 810 states and 1137 transitions. [2018-10-24 19:31:43,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:31:43,210 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1137 transitions. [2018-10-24 19:31:43,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-24 19:31:43,213 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:31:43,213 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:31:43,214 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:31:43,214 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:31:43,214 INFO L82 PathProgramCache]: Analyzing trace with hash 507940818, now seen corresponding path program 1 times [2018-10-24 19:31:43,214 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:31:43,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:31:43,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:31:43,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:31:43,216 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:31:43,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:31:43,453 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:31:43,453 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:31:43,454 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:31:43,455 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 140 with the following transitions: [2018-10-24 19:31:43,457 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [53], [64], [68], [72], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [527], [529], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-24 19:31:43,524 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:31:43,524 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:31:56,917 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:31:56,919 INFO L272 AbstractInterpreter]: Visited 108 different actions 108 times. Never merged. Never widened. Never found a fixpoint. Largest state had 38 variables. [2018-10-24 19:31:56,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:31:56,931 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:32:01,415 INFO L232 lantSequenceWeakener]: Weakened 118 states. On average, predicates are now at 81.18% of their original sizes. [2018-10-24 19:32:01,416 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:32:05,388 INFO L413 sIntCurrentIteration]: We have 138 unified AI predicates [2018-10-24 19:32:05,389 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:32:05,389 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:32:05,390 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [6] total 18 [2018-10-24 19:32:05,390 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:32:05,390 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-24 19:32:05,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-24 19:32:05,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2018-10-24 19:32:05,391 INFO L87 Difference]: Start difference. First operand 810 states and 1137 transitions. Second operand 14 states. [2018-10-24 19:34:34,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:34:34,436 INFO L93 Difference]: Finished difference Result 1914 states and 2695 transitions. [2018-10-24 19:34:34,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-24 19:34:34,437 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 139 [2018-10-24 19:34:34,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:34:34,443 INFO L225 Difference]: With dead ends: 1914 [2018-10-24 19:34:34,443 INFO L226 Difference]: Without dead ends: 1110 [2018-10-24 19:34:34,446 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 151 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=193, Invalid=509, Unknown=0, NotChecked=0, Total=702 [2018-10-24 19:34:34,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2018-10-24 19:34:34,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 957. [2018-10-24 19:34:34,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 957 states. [2018-10-24 19:34:34,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1292 transitions. [2018-10-24 19:34:34,550 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1292 transitions. Word has length 139 [2018-10-24 19:34:34,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:34:34,551 INFO L481 AbstractCegarLoop]: Abstraction has 957 states and 1292 transitions. [2018-10-24 19:34:34,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-24 19:34:34,551 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1292 transitions. [2018-10-24 19:34:34,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-24 19:34:34,555 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:34:34,555 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:34:34,556 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:34:34,556 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:34:34,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1244996254, now seen corresponding path program 1 times [2018-10-24 19:34:34,556 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:34:34,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:34:34,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:34:34,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:34:34,558 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:34:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:34:34,851 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-24 19:34:35,130 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-24 19:34:35,223 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 26 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:34:35,224 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:34:35,224 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:34:35,224 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 145 with the following transitions: [2018-10-24 19:34:35,225 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [25], [26], [30], [34], [38], [42], [53], [64], [68], [72], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [527], [529], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-24 19:34:35,242 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:34:35,242 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:35:22,699 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:35:22,699 INFO L272 AbstractInterpreter]: Visited 111 different actions 329 times. Merged at 7 different actions 18 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 38 variables. [2018-10-24 19:35:22,708 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:35:22,708 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:35:26,315 INFO L232 lantSequenceWeakener]: Weakened 6 states. On average, predicates are now at 86.11% of their original sizes. [2018-10-24 19:35:26,316 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-24 19:35:28,507 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:35:28,512 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:35:28,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:35:28 BoogieIcfgContainer [2018-10-24 19:35:28,512 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:35:28,513 INFO L168 Benchmark]: Toolchain (without parser) took 240067.77 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 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-24 19:35:28,514 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 19:35:28,515 INFO L168 Benchmark]: CACSL2BoogieTranslator took 745.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-24 19:35:28,516 INFO L168 Benchmark]: Boogie Procedure Inliner took 192.56 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -812.4 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2018-10-24 19:35:28,517 INFO L168 Benchmark]: Boogie Preprocessor took 72.62 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 19:35:28,517 INFO L168 Benchmark]: RCFGBuilder took 3842.54 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: 120.1 MB). Peak memory consumption was 120.1 MB. Max. memory is 7.1 GB. [2018-10-24 19:35:28,518 INFO L168 Benchmark]: TraceAbstraction took 235206.06 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.6 GB in the end (delta: -517.6 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-24 19:35:28,523 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 745.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 192.56 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -812.4 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 72.62 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3842.54 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: 120.1 MB). Peak memory consumption was 120.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 235206.06 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.6 GB in the end (delta: -517.6 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 472]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 472). Cancelled while BasicCegarLoop was analyzing trace of length 145 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 235.1s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 155.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1031 SDtfs, 2805 SDslu, 768 SDs, 0 SdLazy, 3336 SolverSat, 699 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 93.8s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 177 GetRequests, 135 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 9.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=957occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 60.9s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9937886941071056 AbsIntWeakeningRatio, 0.23487544483985764 AbsIntAvgWeakeningVarsNumRemoved, 1076.743772241993 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 168 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 614 NumberOfCodeBlocks, 614 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 609 ConstructedInterpolants, 0 QuantifiedInterpolants, 362541 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 71/73 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown