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_label42_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:41:11,255 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:41:11,257 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:41:11,276 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:41:11,277 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:41:11,278 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:41:11,280 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:41:11,283 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:41:11,285 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:41:11,287 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:41:11,289 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:41:11,290 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:41:11,291 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:41:11,292 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:41:11,293 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:41:11,301 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:41:11,302 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:41:11,307 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:41:11,312 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:41:11,313 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:41:11,317 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:41:11,318 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:41:11,321 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:41:11,336 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 21:41:11,362 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:41:11,363 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:41:11,363 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:41:11,364 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:41:11,364 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:41:11,364 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:41:11,364 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:41:11,365 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:41:11,365 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:41:11,365 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:41:11,366 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:41:11,366 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:41:11,367 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:41:11,367 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:41:11,367 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:41:11,367 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:41:11,367 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:41:11,370 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:41:11,370 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:41:11,370 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:41:11,371 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:41:11,371 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:41:11,371 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:41:11,371 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:41:11,371 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:41:11,372 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:41:11,372 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:41:11,372 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:41:11,372 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:41:11,372 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:41:11,373 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:41:11,373 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:41:11,373 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:41:11,373 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:41:11,456 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:41:11,477 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:41:11,481 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:41:11,483 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:41:11,484 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:41:11,484 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label42_true-unreach-call_false-termination.c [2018-10-24 21:41:11,555 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/425de2d66/16df0408cad04f61a91224d41a88e350/FLAG912839f87 [2018-10-24 21:41:12,158 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:41:12,159 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label42_true-unreach-call_false-termination.c [2018-10-24 21:41:12,179 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/425de2d66/16df0408cad04f61a91224d41a88e350/FLAG912839f87 [2018-10-24 21:41:12,207 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/425de2d66/16df0408cad04f61a91224d41a88e350 [2018-10-24 21:41:12,220 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:41:12,223 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:41:12,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:41:12,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:41:12,230 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:41:12,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:41:12" (1/1) ... [2018-10-24 21:41:12,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13a2e493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:12, skipping insertion in model container [2018-10-24 21:41:12,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:41:12" (1/1) ... [2018-10-24 21:41:12,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:41:12,323 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:41:12,854 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:41:12,862 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:41:13,039 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:41:13,078 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:41:13,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:13 WrapperNode [2018-10-24 21:41:13,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:41:13,082 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:41:13,082 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:41:13,083 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:41:13,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:13" (1/1) ... [2018-10-24 21:41:13,137 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:13" (1/1) ... [2018-10-24 21:41:13,337 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:41:13,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:41:13,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:41:13,338 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:41:13,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:13" (1/1) ... [2018-10-24 21:41:13,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:13" (1/1) ... [2018-10-24 21:41:13,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:13" (1/1) ... [2018-10-24 21:41:13,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:13" (1/1) ... [2018-10-24 21:41:13,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:13" (1/1) ... [2018-10-24 21:41:13,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:13" (1/1) ... [2018-10-24 21:41:13,455 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:13" (1/1) ... [2018-10-24 21:41:13,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:41:13,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:41:13,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:41:13,476 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:41:13,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:13" (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 21:41:13,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:41:13,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:41:13,546 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:41:13,546 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:41:13,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:41:13,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:41:13,547 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:41:13,547 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:41:17,157 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:41:17,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:41:17 BoogieIcfgContainer [2018-10-24 21:41:17,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:41:17,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:41:17,160 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:41:17,166 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:41:17,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:41:12" (1/3) ... [2018-10-24 21:41:17,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@509b20ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:41:17, skipping insertion in model container [2018-10-24 21:41:17,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:13" (2/3) ... [2018-10-24 21:41:17,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@509b20ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:41:17, skipping insertion in model container [2018-10-24 21:41:17,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:41:17" (3/3) ... [2018-10-24 21:41:17,171 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label42_true-unreach-call_false-termination.c [2018-10-24 21:41:17,182 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:41:17,198 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:41:17,217 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:41:17,271 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:41:17,271 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:41:17,271 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:41:17,272 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:41:17,272 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:41:17,272 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:41:17,272 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:41:17,272 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:41:17,306 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-24 21:41:17,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-24 21:41:17,316 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:41:17,317 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] [2018-10-24 21:41:17,320 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:41:17,325 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:41:17,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1589650361, now seen corresponding path program 1 times [2018-10-24 21:41:17,328 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:41:17,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:41:17,383 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:41:17,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:41:17,384 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:41:17,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:41:17,769 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:41:17,790 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 21:41:17,792 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:41:17,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:41:17,792 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:41:17,798 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:41:17,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:41:17,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:41:17,818 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-24 21:41:19,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:41:19,559 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-24 21:41:19,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:41:19,562 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2018-10-24 21:41:19,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:41:19,582 INFO L225 Difference]: With dead ends: 691 [2018-10-24 21:41:19,583 INFO L226 Difference]: Without dead ends: 434 [2018-10-24 21:41:19,591 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:41:19,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-24 21:41:19,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-24 21:41:19,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-24 21:41:19,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-10-24 21:41:19,683 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 49 [2018-10-24 21:41:19,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:41:19,683 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-10-24 21:41:19,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:41:19,684 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-10-24 21:41:19,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-24 21:41:19,692 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:41:19,692 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:41:19,693 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:41:19,693 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:41:19,693 INFO L82 PathProgramCache]: Analyzing trace with hash 192752175, now seen corresponding path program 1 times [2018-10-24 21:41:19,693 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:41:19,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:41:19,695 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:41:19,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:41:19,695 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:41:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:41:20,105 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:41:20,106 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:41:20,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:41:20,106 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:41:20,108 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:41:20,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:41:20,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:41:20,109 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-10-24 21:41:22,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:41:22,416 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-10-24 21:41:22,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:41:22,419 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-10-24 21:41:22,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:41:22,426 INFO L225 Difference]: With dead ends: 1062 [2018-10-24 21:41:22,426 INFO L226 Difference]: Without dead ends: 634 [2018-10-24 21:41:22,431 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:41:22,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-10-24 21:41:22,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-10-24 21:41:22,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-10-24 21:41:22,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-10-24 21:41:22,472 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 136 [2018-10-24 21:41:22,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:41:22,473 INFO L481 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-10-24 21:41:22,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:41:22,473 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-10-24 21:41:22,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-24 21:41:22,478 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:41:22,478 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:41:22,478 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:41:22,479 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:41:22,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1678139032, now seen corresponding path program 1 times [2018-10-24 21:41:22,479 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:41:22,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:41:22,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:41:22,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:41:22,481 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:41:22,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:41:22,655 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:41:22,655 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:41:22,655 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:41:22,656 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:41:22,657 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:41:22,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:41:22,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:41:22,658 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 4 states. [2018-10-24 21:41:26,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:41:26,737 INFO L93 Difference]: Finished difference Result 2352 states and 4016 transitions. [2018-10-24 21:41:26,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:41:26,740 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2018-10-24 21:41:26,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:41:26,760 INFO L225 Difference]: With dead ends: 2352 [2018-10-24 21:41:26,760 INFO L226 Difference]: Without dead ends: 1733 [2018-10-24 21:41:26,771 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 21:41:26,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1733 states. [2018-10-24 21:41:26,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1733 to 1733. [2018-10-24 21:41:26,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1733 states. [2018-10-24 21:41:26,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2647 transitions. [2018-10-24 21:41:26,854 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2647 transitions. Word has length 145 [2018-10-24 21:41:26,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:41:26,855 INFO L481 AbstractCegarLoop]: Abstraction has 1733 states and 2647 transitions. [2018-10-24 21:41:26,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:41:26,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2647 transitions. [2018-10-24 21:41:26,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-10-24 21:41:26,872 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:41:26,873 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:41:26,873 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:41:26,873 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:41:26,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1304221998, now seen corresponding path program 1 times [2018-10-24 21:41:26,874 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:41:26,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:41:26,875 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:41:26,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:41:26,875 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:41:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:41:27,469 WARN L179 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-10-24 21:41:27,967 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 14 [2018-10-24 21:41:28,088 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 84 proven. 107 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:41:28,089 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:41:28,089 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:41:28,090 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 275 with the following transitions: [2018-10-24 21:41:28,092 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [293], [295], [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], [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], [662], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 21:41:28,161 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:41:28,162 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:41:30,829 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:41:33,627 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:41:33,629 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 21:41:33,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:41:33,672 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:41:37,026 INFO L232 lantSequenceWeakener]: Weakened 266 states. On average, predicates are now at 77.88% of their original sizes. [2018-10-24 21:41:37,027 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:41:37,501 INFO L413 sIntCurrentIteration]: We have 273 unified AI predicates [2018-10-24 21:41:37,501 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:41:37,502 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:41:37,502 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-10-24 21:41:37,503 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:41:37,503 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 21:41:37,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 21:41:37,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:41:37,504 INFO L87 Difference]: Start difference. First operand 1733 states and 2647 transitions. Second operand 7 states. [2018-10-24 21:42:05,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:42:05,733 INFO L93 Difference]: Finished difference Result 3645 states and 5568 transitions. [2018-10-24 21:42:05,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:42:05,733 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 274 [2018-10-24 21:42:05,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:42:05,744 INFO L225 Difference]: With dead ends: 3645 [2018-10-24 21:42:05,745 INFO L226 Difference]: Without dead ends: 1918 [2018-10-24 21:42:05,754 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 274 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:42:05,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1918 states. [2018-10-24 21:42:05,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1918 to 1916. [2018-10-24 21:42:05,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1916 states. [2018-10-24 21:42:05,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2838 transitions. [2018-10-24 21:42:05,810 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2838 transitions. Word has length 274 [2018-10-24 21:42:05,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:42:05,810 INFO L481 AbstractCegarLoop]: Abstraction has 1916 states and 2838 transitions. [2018-10-24 21:42:05,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 21:42:05,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2838 transitions. [2018-10-24 21:42:05,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2018-10-24 21:42:05,822 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:42:05,823 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, 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, 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] [2018-10-24 21:42:05,823 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:42:05,824 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:42:05,824 INFO L82 PathProgramCache]: Analyzing trace with hash -111433536, now seen corresponding path program 1 times [2018-10-24 21:42:05,824 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:42:05,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:42:05,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:42:05,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:42:05,826 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:42:05,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:42:06,348 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 21:42:06,560 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 21:42:07,296 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 214 proven. 189 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:42:07,297 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:42:07,297 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:42:07,297 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 360 with the following transitions: [2018-10-24 21:42:07,297 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [293], [295], [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], [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], [662], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 21:42:07,304 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:42:07,304 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:42:09,247 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:42:13,688 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:42:13,689 INFO L272 AbstractInterpreter]: Visited 122 different actions 237 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 21:42:13,699 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:42:13,699 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:42:16,523 INFO L232 lantSequenceWeakener]: Weakened 122 states. On average, predicates are now at 77.53% of their original sizes. [2018-10-24 21:42:16,523 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:42:52,765 INFO L413 sIntCurrentIteration]: We have 358 unified AI predicates [2018-10-24 21:42:52,765 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:42:52,766 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:42:52,766 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [12] total 28 [2018-10-24 21:42:52,766 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:42:52,767 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-24 21:42:52,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-24 21:42:52,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2018-10-24 21:42:52,768 INFO L87 Difference]: Start difference. First operand 1916 states and 2838 transitions. Second operand 18 states. Received shutdown request... [2018-10-24 21:45:12,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-24 21:45:12,938 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:45:12,943 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:45:12,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:45:12 BoogieIcfgContainer [2018-10-24 21:45:12,943 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:45:12,944 INFO L168 Benchmark]: Toolchain (without parser) took 240723.27 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -386.1 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-24 21:45:12,946 INFO L168 Benchmark]: CDTParser took 0.20 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 21:45:12,947 INFO L168 Benchmark]: CACSL2BoogieTranslator took 855.14 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 21:45:12,948 INFO L168 Benchmark]: Boogie Procedure Inliner took 254.77 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 716.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -812.0 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-24 21:45:12,948 INFO L168 Benchmark]: Boogie Preprocessor took 138.28 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:45:12,949 INFO L168 Benchmark]: RCFGBuilder took 3683.03 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 135.3 MB). Peak memory consumption was 135.3 MB. Max. memory is 7.1 GB. [2018-10-24 21:45:12,950 INFO L168 Benchmark]: TraceAbstraction took 235783.67 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 1.8 GB in the end (delta: 223.9 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-24 21:45:12,955 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 855.14 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 254.77 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 716.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -812.0 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 138.28 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3683.03 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 135.3 MB). Peak memory consumption was 135.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 235783.67 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 1.8 GB in the end (delta: 223.9 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 130). Cancelled while BasicCegarLoop was constructing difference of abstraction (1916states) and FLOYD_HOARE automaton (currently 18 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (2564 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 235.6s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 176.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 751 SDtfs, 5241 SDslu, 562 SDs, 0 SdLazy, 5732 SolverSat, 1102 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 69.8s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 658 GetRequests, 577 SyntacticMatches, 43 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 38.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1916occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 11.9s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9961270355313625 AbsIntWeakeningRatio, 0.0919175911251981 AbsIntAvgWeakeningVarsNumRemoved, 629.649762282092 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 963 NumberOfCodeBlocks, 963 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 958 ConstructedInterpolants, 0 QuantifiedInterpolants, 2379316 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 392/688 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown