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/Problem14_label34_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:32:22,566 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:32:22,568 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:32:22,586 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:32:22,586 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:32:22,587 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:32:22,589 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:32:22,590 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:32:22,592 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:32:22,593 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:32:22,594 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:32:22,594 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:32:22,595 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:32:22,596 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:32:22,597 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:32:22,598 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:32:22,599 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:32:22,601 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:32:22,603 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:32:22,604 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:32:22,605 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:32:22,607 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:32:22,609 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 18:32:22,618 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 18:32:22,634 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:32:22,634 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:32:22,635 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:32:22,635 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:32:22,635 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:32:22,635 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:32:22,636 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:32:22,636 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:32:22,636 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:32:22,637 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:32:22,637 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:32:22,637 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:32:22,638 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:32:22,638 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:32:22,638 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:32:22,638 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:32:22,638 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:32:22,639 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:32:22,640 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:32:22,640 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:32:22,641 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:32:22,641 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:32:22,641 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:32:22,641 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:32:22,641 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:32:22,642 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:32:22,642 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:32:22,642 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:32:22,642 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:32:22,643 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:32:22,643 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:32:22,643 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:32:22,643 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:32:22,643 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:32:22,694 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:32:22,714 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:32:22,718 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:32:22,720 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:32:22,720 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:32:22,721 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label34_false-unreach-call_false-termination.c [2018-10-24 18:32:22,784 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5df524691/056ec3c0c831436a83a47fd13909f4aa/FLAG245bf0fc6 [2018-10-24 18:32:23,462 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:32:23,463 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label34_false-unreach-call_false-termination.c [2018-10-24 18:32:23,478 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5df524691/056ec3c0c831436a83a47fd13909f4aa/FLAG245bf0fc6 [2018-10-24 18:32:23,495 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5df524691/056ec3c0c831436a83a47fd13909f4aa [2018-10-24 18:32:23,511 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:32:23,514 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:32:23,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:32:23,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:32:23,522 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:32:23,523 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:32:23" (1/1) ... [2018-10-24 18:32:23,526 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@405e6276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:32:23, skipping insertion in model container [2018-10-24 18:32:23,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:32:23" (1/1) ... [2018-10-24 18:32:23,538 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:32:23,614 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:32:24,074 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:32:24,079 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:32:24,253 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:32:24,273 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:32:24,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:32:24 WrapperNode [2018-10-24 18:32:24,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:32:24,275 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:32:24,275 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:32:24,275 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:32:24,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:32:24" (1/1) ... [2018-10-24 18:32:24,310 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:32:24" (1/1) ... [2018-10-24 18:32:24,523 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:32:24,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:32:24,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:32:24,525 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:32:24,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:32:24" (1/1) ... [2018-10-24 18:32:24,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:32:24" (1/1) ... [2018-10-24 18:32:24,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:32:24" (1/1) ... [2018-10-24 18:32:24,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:32:24" (1/1) ... [2018-10-24 18:32:24,608 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:32:24" (1/1) ... [2018-10-24 18:32:24,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:32:24" (1/1) ... [2018-10-24 18:32:24,636 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:32:24" (1/1) ... [2018-10-24 18:32:24,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:32:24,646 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:32:24,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:32:24,647 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:32:24,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:32:24" (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 18:32:24,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:32:24,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:32:24,725 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:32:24,725 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:32:24,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:32:24,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:32:24,726 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:32:24,726 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:32:28,343 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:32:28,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:32:28 BoogieIcfgContainer [2018-10-24 18:32:28,346 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:32:28,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:32:28,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:32:28,350 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:32:28,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:32:23" (1/3) ... [2018-10-24 18:32:28,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14a83e08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:32:28, skipping insertion in model container [2018-10-24 18:32:28,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:32:24" (2/3) ... [2018-10-24 18:32:28,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14a83e08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:32:28, skipping insertion in model container [2018-10-24 18:32:28,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:32:28" (3/3) ... [2018-10-24 18:32:28,355 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label34_false-unreach-call_false-termination.c [2018-10-24 18:32:28,365 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:32:28,376 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:32:28,395 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:32:28,450 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:32:28,450 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:32:28,451 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:32:28,451 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:32:28,451 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:32:28,451 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:32:28,451 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:32:28,451 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:32:28,479 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-24 18:32:28,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-24 18:32:28,487 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:32:28,488 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] [2018-10-24 18:32:28,490 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:32:28,496 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:32:28,496 INFO L82 PathProgramCache]: Analyzing trace with hash 457799444, now seen corresponding path program 1 times [2018-10-24 18:32:28,499 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:32:28,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:32:28,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:32:28,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:32:28,551 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:32:28,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:32:28,915 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 18:32:28,917 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:32:28,918 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:32:28,918 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:32:28,924 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:32:28,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:32:28,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:32:28,947 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-10-24 18:32:32,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:32:32,295 INFO L93 Difference]: Finished difference Result 894 states and 1611 transitions. [2018-10-24 18:32:32,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:32:32,298 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-10-24 18:32:32,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:32:32,321 INFO L225 Difference]: With dead ends: 894 [2018-10-24 18:32:32,322 INFO L226 Difference]: Without dead ends: 633 [2018-10-24 18:32:32,330 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:32:32,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-10-24 18:32:32,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2018-10-24 18:32:32,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2018-10-24 18:32:32,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 1007 transitions. [2018-10-24 18:32:32,425 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 1007 transitions. Word has length 34 [2018-10-24 18:32:32,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:32:32,426 INFO L481 AbstractCegarLoop]: Abstraction has 633 states and 1007 transitions. [2018-10-24 18:32:32,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:32:32,426 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1007 transitions. [2018-10-24 18:32:32,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-24 18:32:32,436 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:32:32,436 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:32:32,437 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:32:32,437 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:32:32,437 INFO L82 PathProgramCache]: Analyzing trace with hash 610303147, now seen corresponding path program 1 times [2018-10-24 18:32:32,437 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:32:32,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:32:32,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:32:32,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:32:32,439 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:32:32,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:32:32,752 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:32:32,753 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:32:32,753 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:32:32,753 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:32:32,755 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:32:32,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:32:32,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:32:32,756 INFO L87 Difference]: Start difference. First operand 633 states and 1007 transitions. Second operand 4 states. [2018-10-24 18:32:36,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:32:36,347 INFO L93 Difference]: Finished difference Result 2170 states and 3670 transitions. [2018-10-24 18:32:36,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:32:36,348 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2018-10-24 18:32:36,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:32:36,365 INFO L225 Difference]: With dead ends: 2170 [2018-10-24 18:32:36,366 INFO L226 Difference]: Without dead ends: 1543 [2018-10-24 18:32:36,372 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 18:32:36,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2018-10-24 18:32:36,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1543. [2018-10-24 18:32:36,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1543 states. [2018-10-24 18:32:36,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2368 transitions. [2018-10-24 18:32:36,475 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2368 transitions. Word has length 147 [2018-10-24 18:32:36,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:32:36,476 INFO L481 AbstractCegarLoop]: Abstraction has 1543 states and 2368 transitions. [2018-10-24 18:32:36,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:32:36,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2368 transitions. [2018-10-24 18:32:36,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-10-24 18:32:36,495 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:32:36,495 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:32:36,496 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:32:36,496 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:32:36,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1882907655, now seen corresponding path program 1 times [2018-10-24 18:32:36,496 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:32:36,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:32:36,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:32:36,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:32:36,498 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:32:36,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:32:37,267 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:32:37,268 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:32:37,268 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:32:37,269 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 262 with the following transitions: [2018-10-24 18:32:37,273 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [173], [175], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [786], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 18:32:37,382 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:32:37,383 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:32:40,499 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:32:40,501 INFO L272 AbstractInterpreter]: Visited 148 different actions 148 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 18:32:40,539 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:32:40,540 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:32:42,679 INFO L232 lantSequenceWeakener]: Weakened 253 states. On average, predicates are now at 77.64% of their original sizes. [2018-10-24 18:32:42,679 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:32:43,007 INFO L413 sIntCurrentIteration]: We have 260 unified AI predicates [2018-10-24 18:32:43,007 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:32:43,008 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:32:43,009 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 18:32:43,009 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:32:43,010 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 18:32:43,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 18:32:43,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 18:32:43,011 INFO L87 Difference]: Start difference. First operand 1543 states and 2368 transitions. Second operand 7 states. [2018-10-24 18:32:45,343 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:33:18,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:33:18,278 INFO L93 Difference]: Finished difference Result 3265 states and 4970 transitions. [2018-10-24 18:33:18,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:33:18,278 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 261 [2018-10-24 18:33:18,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:33:18,289 INFO L225 Difference]: With dead ends: 3265 [2018-10-24 18:33:18,289 INFO L226 Difference]: Without dead ends: 1728 [2018-10-24 18:33:18,294 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 261 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:33:18,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2018-10-24 18:33:18,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1726. [2018-10-24 18:33:18,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1726 states. [2018-10-24 18:33:18,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2558 transitions. [2018-10-24 18:33:18,348 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2558 transitions. Word has length 261 [2018-10-24 18:33:18,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:33:18,349 INFO L481 AbstractCegarLoop]: Abstraction has 1726 states and 2558 transitions. [2018-10-24 18:33:18,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 18:33:18,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2558 transitions. [2018-10-24 18:33:18,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-10-24 18:33:18,359 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:33:18,359 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 18:33:18,360 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:33:18,360 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:33:18,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1291032168, now seen corresponding path program 1 times [2018-10-24 18:33:18,361 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:33:18,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:18,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:33:18,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:18,362 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:33:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:33:19,237 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 168 proven. 161 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:33:19,237 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:33:19,237 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:33:19,238 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 347 with the following transitions: [2018-10-24 18:33:19,238 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [173], [175], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [786], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 18:33:19,247 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:33:19,248 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:33:24,645 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:33:24,645 INFO L272 AbstractInterpreter]: Visited 152 different actions 297 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:33:24,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:33:24,672 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:33:28,457 INFO L232 lantSequenceWeakener]: Weakened 126 states. On average, predicates are now at 78.24% of their original sizes. [2018-10-24 18:33:28,457 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:34:20,037 INFO L413 sIntCurrentIteration]: We have 345 unified AI predicates [2018-10-24 18:34:20,038 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:34:20,038 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:34:20,038 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [12] total 29 [2018-10-24 18:34:20,038 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:34:20,039 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-24 18:34:20,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-24 18:34:20,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2018-10-24 18:34:20,040 INFO L87 Difference]: Start difference. First operand 1726 states and 2558 transitions. Second operand 19 states. [2018-10-24 18:35:33,149 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 18:36:18,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-24 18:36:18,673 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:36:18,680 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:36:18,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:36:18 BoogieIcfgContainer [2018-10-24 18:36:18,681 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:36:18,682 INFO L168 Benchmark]: Toolchain (without parser) took 235169.05 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 3.4 GB in the end (delta: -2.0 GB). Peak memory consumption was 594.1 MB. Max. memory is 7.1 GB. [2018-10-24 18:36:18,684 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-10-24 18:36:18,684 INFO L168 Benchmark]: CACSL2BoogieTranslator took 759.44 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-10-24 18:36:18,685 INFO L168 Benchmark]: Boogie Procedure Inliner took 248.78 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 711.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -806.2 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-24 18:36:18,686 INFO L168 Benchmark]: Boogie Preprocessor took 121.91 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2018-10-24 18:36:18,687 INFO L168 Benchmark]: RCFGBuilder took 3699.27 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 120.2 MB). Peak memory consumption was 120.2 MB. Max. memory is 7.1 GB. [2018-10-24 18:36:18,688 INFO L168 Benchmark]: TraceAbstraction took 230333.98 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.4 GB in the end (delta: -1.4 GB). Peak memory consumption was 501.9 MB. Max. memory is 7.1 GB. [2018-10-24 18:36:18,693 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 759.44 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 248.78 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 711.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -806.2 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.91 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3699.27 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 120.2 MB). Peak memory consumption was 120.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230333.98 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.4 GB in the end (delta: -1.4 GB). Peak memory consumption was 501.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 85). Cancelled while BasicCegarLoop was constructing difference of abstraction (1726states) and FLOYD_HOARE automaton (currently 23 states, 19 states before enhancement),while ReachableStatesComputation was computing reachable states (1185 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 230.2s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 160.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 623 SDtfs, 2930 SDslu, 632 SDs, 0 SdLazy, 4727 SolverSat, 847 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 66.5s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 624 GetRequests, 530 SyntacticMatches, 60 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 53.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1726occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 8.7s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9959605940831235 AbsIntWeakeningRatio, 0.09586776859504133 AbsIntAvgWeakeningVarsNumRemoved, 625.0462809917356 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 788 NumberOfCodeBlocks, 788 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 784 ConstructedInterpolants, 0 QuantifiedInterpolants, 1600168 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 336/499 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown