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/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label58_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:49:33,499 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:49:33,501 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:49:33,513 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:49:33,514 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:49:33,515 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:49:33,516 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:49:33,518 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:49:33,519 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:49:33,520 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:49:33,521 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:49:33,521 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:49:33,522 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:49:33,523 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:49:33,525 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:49:33,525 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:49:33,526 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:49:33,528 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:49:33,530 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:49:33,532 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:49:33,533 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:49:33,534 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:49:33,537 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 20:49:33,546 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 20:49:33,572 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:49:33,573 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:49:33,574 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:49:33,574 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:49:33,574 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:49:33,574 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:49:33,575 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:49:33,575 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:49:33,575 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:49:33,575 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:49:33,575 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:49:33,576 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:49:33,576 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:49:33,576 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:49:33,576 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:49:33,576 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:49:33,578 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:49:33,578 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:49:33,579 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:49:33,579 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:49:33,579 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:49:33,579 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:49:33,579 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:49:33,580 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:49:33,580 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:49:33,580 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:49:33,580 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:49:33,581 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:49:33,629 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:49:33,646 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:49:33,650 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:49:33,652 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:49:33,653 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:49:33,653 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label58_true-unreach-call.c [2018-10-23 20:49:33,720 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b6e20fa54/f98201c093c74214a0506c2cf17c5cfe/FLAGe23001ebe [2018-10-23 20:49:34,429 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:49:34,429 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label58_true-unreach-call.c [2018-10-23 20:49:34,452 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b6e20fa54/f98201c093c74214a0506c2cf17c5cfe/FLAGe23001ebe [2018-10-23 20:49:34,470 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b6e20fa54/f98201c093c74214a0506c2cf17c5cfe [2018-10-23 20:49:34,483 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:49:34,485 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:49:34,489 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:49:34,489 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:49:34,493 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:49:34,494 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:49:34" (1/1) ... [2018-10-23 20:49:34,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb15343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:49:34, skipping insertion in model container [2018-10-23 20:49:34,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:49:34" (1/1) ... [2018-10-23 20:49:34,509 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:49:34,637 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:49:35,598 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:49:35,603 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:49:36,028 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:49:36,051 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:49:36,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:49:36 WrapperNode [2018-10-23 20:49:36,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:49:36,054 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:49:36,054 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:49:36,054 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:49:36,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:49:36" (1/1) ... [2018-10-23 20:49:36,119 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:49:36" (1/1) ... [2018-10-23 20:49:36,619 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:49:36,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:49:36,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:49:36,620 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:49:36,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:49:36" (1/1) ... [2018-10-23 20:49:36,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:49:36" (1/1) ... [2018-10-23 20:49:36,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:49:36" (1/1) ... [2018-10-23 20:49:36,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:49:36" (1/1) ... [2018-10-23 20:49:36,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:49:36" (1/1) ... [2018-10-23 20:49:36,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:49:36" (1/1) ... [2018-10-23 20:49:36,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:49:36" (1/1) ... [2018-10-23 20:49:37,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:49:37,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:49:37,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:49:37,007 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:49:37,008 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:49:36" (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 [2018-10-23 20:49:37,079 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:49:37,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:49:37,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:49:45,592 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:49:45,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:49:45 BoogieIcfgContainer [2018-10-23 20:49:45,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:49:45,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:49:45,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:49:45,598 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:49:45,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:49:34" (1/3) ... [2018-10-23 20:49:45,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5edaa4bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:49:45, skipping insertion in model container [2018-10-23 20:49:45,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:49:36" (2/3) ... [2018-10-23 20:49:45,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5edaa4bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:49:45, skipping insertion in model container [2018-10-23 20:49:45,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:49:45" (3/3) ... [2018-10-23 20:49:45,603 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label58_true-unreach-call.c [2018-10-23 20:49:45,613 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:49:45,622 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:49:45,641 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:49:45,683 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:49:45,683 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:49:45,684 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:49:45,684 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:49:45,684 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:49:45,684 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:49:45,684 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:49:45,684 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:49:45,685 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:49:45,716 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-23 20:49:45,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-23 20:49:45,731 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:49:45,733 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] [2018-10-23 20:49:45,735 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:49:45,741 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:49:45,742 INFO L82 PathProgramCache]: Analyzing trace with hash 279835594, now seen corresponding path program 1 times [2018-10-23 20:49:45,744 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:49:45,745 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:49:45,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:49:45,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:49:45,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:49:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:49:46,268 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-23 20:49:46,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:49:46,288 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:49:46,289 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:49:46,294 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:49:46,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:49:46,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:49:46,315 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-23 20:50:00,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:50:00,448 INFO L93 Difference]: Finished difference Result 2085 states and 3898 transitions. [2018-10-23 20:50:00,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:50:00,451 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2018-10-23 20:50:00,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:50:00,488 INFO L225 Difference]: With dead ends: 2085 [2018-10-23 20:50:00,488 INFO L226 Difference]: Without dead ends: 1487 [2018-10-23 20:50:00,495 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:50:00,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2018-10-23 20:50:00,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1023. [2018-10-23 20:50:00,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2018-10-23 20:50:00,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1623 transitions. [2018-10-23 20:50:00,605 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1623 transitions. Word has length 46 [2018-10-23 20:50:00,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:50:00,605 INFO L481 AbstractCegarLoop]: Abstraction has 1023 states and 1623 transitions. [2018-10-23 20:50:00,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:50:00,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1623 transitions. [2018-10-23 20:50:00,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-23 20:50:00,611 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:50:00,611 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:50:00,612 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:50:00,612 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:50:00,612 INFO L82 PathProgramCache]: Analyzing trace with hash -447668766, now seen corresponding path program 1 times [2018-10-23 20:50:00,613 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:50:00,613 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:50:00,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:50:00,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:50:00,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:50:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:50:00,936 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:50:00,936 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:50:00,936 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:50:00,938 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:50:00,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:50:00,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:50:00,939 INFO L87 Difference]: Start difference. First operand 1023 states and 1623 transitions. Second operand 4 states. [2018-10-23 20:50:11,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:50:11,440 INFO L93 Difference]: Finished difference Result 2908 states and 4662 transitions. [2018-10-23 20:50:11,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:50:11,441 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2018-10-23 20:50:11,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:50:11,452 INFO L225 Difference]: With dead ends: 2908 [2018-10-23 20:50:11,452 INFO L226 Difference]: Without dead ends: 1887 [2018-10-23 20:50:11,455 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:50:11,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2018-10-23 20:50:11,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 1887. [2018-10-23 20:50:11,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1887 states. [2018-10-23 20:50:11,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2573 transitions. [2018-10-23 20:50:11,499 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2573 transitions. Word has length 114 [2018-10-23 20:50:11,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:50:11,500 INFO L481 AbstractCegarLoop]: Abstraction has 1887 states and 2573 transitions. [2018-10-23 20:50:11,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:50:11,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2573 transitions. [2018-10-23 20:50:11,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-23 20:50:11,503 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:50:11,503 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:50:11,504 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:50:11,504 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:50:11,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1997237975, now seen corresponding path program 1 times [2018-10-23 20:50:11,504 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:50:11,504 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:50:11,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:50:11,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:50:11,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:50:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:50:11,749 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:50:11,749 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:50:11,749 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:50:11,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:50:11,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:50:11,830 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:51:16,694 WARN L179 SmtUtils]: Spent 1.07 m on a formula simplification. DAG size of input: 149 DAG size of output: 82 [2018-10-23 20:51:17,193 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:51:17,225 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:51:17,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-10-23 20:51:17,226 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 20:51:17,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 20:51:17,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-23 20:51:17,229 INFO L87 Difference]: Start difference. First operand 1887 states and 2573 transitions. Second operand 8 states. [2018-10-23 20:51:17,456 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2018-10-23 20:51:51,508 WARN L179 SmtUtils]: Spent 32.14 s on a formula simplification that was a NOOP. DAG size: 87 [2018-10-23 20:52:32,070 WARN L179 SmtUtils]: Spent 32.16 s on a formula simplification that was a NOOP. DAG size: 94 [2018-10-23 20:53:04,880 WARN L179 SmtUtils]: Spent 32.25 s on a formula simplification that was a NOOP. DAG size: 86 Received shutdown request... [2018-10-23 20:54:05,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-23 20:54:05,433 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 20:54:05,438 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 20:54:05,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:54:05 BoogieIcfgContainer [2018-10-23 20:54:05,438 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 20:54:05,439 INFO L168 Benchmark]: Toolchain (without parser) took 270955.56 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.1 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -412.4 MB). Peak memory consumption was 686.5 MB. Max. memory is 7.1 GB. [2018-10-23 20:54:05,441 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 20:54:05,441 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1563.91 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-23 20:54:05,442 INFO L168 Benchmark]: Boogie Procedure Inliner took 566.10 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 772.8 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -896.7 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-23 20:54:05,443 INFO L168 Benchmark]: Boogie Preprocessor took 386.60 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2018-10-23 20:54:05,444 INFO L168 Benchmark]: RCFGBuilder took 8586.75 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 479.7 MB). Peak memory consumption was 479.7 MB. Max. memory is 7.1 GB. [2018-10-23 20:54:05,445 INFO L168 Benchmark]: TraceAbstraction took 259843.63 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 326.1 MB). Free memory was 1.6 GB in the beginning and 1.8 GB in the end (delta: -161.0 MB). Peak memory consumption was 165.2 MB. Max. memory is 7.1 GB. [2018-10-23 20:54:05,451 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1563.91 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 566.10 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 772.8 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -896.7 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 386.60 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8586.75 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 479.7 MB). Peak memory consumption was 479.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 259843.63 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 326.1 MB). Free memory was 1.6 GB in the beginning and 1.8 GB in the end (delta: -161.0 MB). Peak memory consumption was 165.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 143]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 143). Cancelled while BasicCegarLoop was constructing difference of abstraction (1887states) and FLOYD_HOARE automaton (currently 14 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (7711 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 259.7s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 192.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1186 SDtfs, 5509 SDslu, 860 SDs, 0 SdLazy, 10338 SolverSat, 2352 SolverUnsat, 29 SolverUnknown, 0 SolverNotchecked, 92.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 133 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 162.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1887occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 464 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 66.1s InterpolantComputationTime, 394 NumberOfCodeBlocks, 394 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 390 ConstructedInterpolants, 10 QuantifiedInterpolants, 442226 SizeOfPredicates, 5 NumberOfNonLiveVariables, 179 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 52/129 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown