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/Problem10_label42_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:09:01,506 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:09:01,508 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:09:01,522 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:09:01,522 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:09:01,524 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:09:01,525 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:09:01,527 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:09:01,530 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:09:01,530 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:09:01,532 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:09:01,533 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:09:01,534 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:09:01,535 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:09:01,538 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:09:01,539 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:09:01,540 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:09:01,542 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:09:01,549 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:09:01,554 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:09:01,555 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:09:01,558 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:09:01,561 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 18:09:01,567 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 18:09:01,567 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 18:09:01,570 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 18:09:01,571 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 18:09:01,571 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 18:09:01,594 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:09:01,594 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:09:01,595 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:09:01,595 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:09:01,595 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:09:01,596 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:09:01,596 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:09:01,596 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:09:01,596 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:09:01,596 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:09:01,597 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:09:01,597 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:09:01,597 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:09:01,598 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:09:01,598 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:09:01,598 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:09:01,598 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:09:01,598 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:09:01,599 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:09:01,599 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:09:01,599 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:09:01,599 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:09:01,600 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:09:01,600 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:09:01,600 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:09:01,600 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:09:01,600 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:09:01,601 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:09:01,601 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:09:01,601 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:09:01,601 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:09:01,601 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:09:01,602 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:09:01,602 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:09:01,646 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:09:01,661 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:09:01,665 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:09:01,667 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:09:01,667 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:09:01,668 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label42_false-unreach-call.c [2018-10-24 18:09:01,727 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/749e08dbb/c7f7553d517a4cd78cac7148e79326a5/FLAGac039c404 [2018-10-24 18:09:02,287 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:09:02,289 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label42_false-unreach-call.c [2018-10-24 18:09:02,312 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/749e08dbb/c7f7553d517a4cd78cac7148e79326a5/FLAGac039c404 [2018-10-24 18:09:02,328 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/749e08dbb/c7f7553d517a4cd78cac7148e79326a5 [2018-10-24 18:09:02,337 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:09:02,339 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:09:02,340 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:09:02,340 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:09:02,344 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:09:02,345 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:09:02" (1/1) ... [2018-10-24 18:09:02,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28a8effd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:02, skipping insertion in model container [2018-10-24 18:09:02,348 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:09:02" (1/1) ... [2018-10-24 18:09:02,358 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:09:02,413 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:09:02,895 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:09:02,900 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:09:03,006 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:09:03,023 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:09:03,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:03 WrapperNode [2018-10-24 18:09:03,024 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:09:03,025 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:09:03,025 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:09:03,025 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:09:03,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:03" (1/1) ... [2018-10-24 18:09:03,054 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:03" (1/1) ... [2018-10-24 18:09:03,227 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:09:03,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:09:03,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:09:03,228 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:09:03,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:03" (1/1) ... [2018-10-24 18:09:03,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:03" (1/1) ... [2018-10-24 18:09:03,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:03" (1/1) ... [2018-10-24 18:09:03,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:03" (1/1) ... [2018-10-24 18:09:03,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:03" (1/1) ... [2018-10-24 18:09:03,315 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:03" (1/1) ... [2018-10-24 18:09:03,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:03" (1/1) ... [2018-10-24 18:09:03,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:09:03,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:09:03,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:09:03,341 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:09:03,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:03" (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 18:09:03,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:09:03,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:09:03,411 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:09:03,411 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:09:03,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:09:03,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:09:03,411 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:09:03,412 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:09:06,289 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:09:06,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:09:06 BoogieIcfgContainer [2018-10-24 18:09:06,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:09:06,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:09:06,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:09:06,295 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:09:06,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:09:02" (1/3) ... [2018-10-24 18:09:06,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12cf6153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:09:06, skipping insertion in model container [2018-10-24 18:09:06,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:03" (2/3) ... [2018-10-24 18:09:06,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12cf6153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:09:06, skipping insertion in model container [2018-10-24 18:09:06,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:09:06" (3/3) ... [2018-10-24 18:09:06,299 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label42_false-unreach-call.c [2018-10-24 18:09:06,307 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:09:06,315 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:09:06,332 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:09:06,369 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:09:06,369 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:09:06,370 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:09:06,370 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:09:06,370 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:09:06,370 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:09:06,371 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:09:06,371 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:09:06,402 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-24 18:09:06,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-24 18:09:06,408 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:09:06,410 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] [2018-10-24 18:09:06,412 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:09:06,417 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:09:06,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1002972724, now seen corresponding path program 1 times [2018-10-24 18:09:06,420 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:09:06,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:06,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:09:06,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:06,481 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:09:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:09:06,850 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-24 18:09:06,857 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 18:09:06,859 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:09:06,860 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:09:06,860 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:09:06,866 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:09:06,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:09:06,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:09:06,888 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 4 states. [2018-10-24 18:09:11,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:09:11,015 INFO L93 Difference]: Finished difference Result 737 states and 1298 transitions. [2018-10-24 18:09:11,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:09:11,017 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-10-24 18:09:11,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:09:11,043 INFO L225 Difference]: With dead ends: 737 [2018-10-24 18:09:11,043 INFO L226 Difference]: Without dead ends: 515 [2018-10-24 18:09:11,056 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 18:09:11,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2018-10-24 18:09:11,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2018-10-24 18:09:11,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 515 states. [2018-10-24 18:09:11,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 848 transitions. [2018-10-24 18:09:11,200 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 848 transitions. Word has length 24 [2018-10-24 18:09:11,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:09:11,201 INFO L481 AbstractCegarLoop]: Abstraction has 515 states and 848 transitions. [2018-10-24 18:09:11,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:09:11,201 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 848 transitions. [2018-10-24 18:09:11,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-24 18:09:11,208 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:09:11,210 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:09:11,210 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:09:11,210 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:09:11,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1186733907, now seen corresponding path program 1 times [2018-10-24 18:09:11,211 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:09:11,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:11,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:09:11,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:11,213 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:09:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:09:11,572 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:09:11,573 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:09:11,573 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:09:11,573 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:09:11,575 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:09:11,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:09:11,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:09:11,576 INFO L87 Difference]: Start difference. First operand 515 states and 848 transitions. Second operand 6 states. [2018-10-24 18:09:14,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:09:14,688 INFO L93 Difference]: Finished difference Result 1863 states and 3251 transitions. [2018-10-24 18:09:14,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:09:14,689 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2018-10-24 18:09:14,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:09:14,704 INFO L225 Difference]: With dead ends: 1863 [2018-10-24 18:09:14,704 INFO L226 Difference]: Without dead ends: 1354 [2018-10-24 18:09:14,713 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 18:09:14,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2018-10-24 18:09:14,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1331. [2018-10-24 18:09:14,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1331 states. [2018-10-24 18:09:14,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 2051 transitions. [2018-10-24 18:09:14,792 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 2051 transitions. Word has length 99 [2018-10-24 18:09:14,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:09:14,792 INFO L481 AbstractCegarLoop]: Abstraction has 1331 states and 2051 transitions. [2018-10-24 18:09:14,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:09:14,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 2051 transitions. [2018-10-24 18:09:14,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-24 18:09:14,800 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:09:14,801 INFO L375 BasicCegarLoop]: trace histogram [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 18:09:14,801 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:09:14,801 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:09:14,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1340062609, now seen corresponding path program 1 times [2018-10-24 18:09:14,802 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:09:14,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:14,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:09:14,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:14,804 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:09:14,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:09:15,119 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:09:15,120 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:09:15,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:09:15,120 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:09:15,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:09:15,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:09:15,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:09:15,123 INFO L87 Difference]: Start difference. First operand 1331 states and 2051 transitions. Second operand 6 states. [2018-10-24 18:09:19,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:09:19,041 INFO L93 Difference]: Finished difference Result 3512 states and 5693 transitions. [2018-10-24 18:09:19,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:09:19,044 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2018-10-24 18:09:19,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:09:19,064 INFO L225 Difference]: With dead ends: 3512 [2018-10-24 18:09:19,065 INFO L226 Difference]: Without dead ends: 2187 [2018-10-24 18:09:19,078 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:09:19,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2187 states. [2018-10-24 18:09:19,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2187 to 2165. [2018-10-24 18:09:19,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2165 states. [2018-10-24 18:09:19,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2165 states to 2165 states and 3178 transitions. [2018-10-24 18:09:19,159 INFO L78 Accepts]: Start accepts. Automaton has 2165 states and 3178 transitions. Word has length 101 [2018-10-24 18:09:19,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:09:19,159 INFO L481 AbstractCegarLoop]: Abstraction has 2165 states and 3178 transitions. [2018-10-24 18:09:19,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:09:19,160 INFO L276 IsEmpty]: Start isEmpty. Operand 2165 states and 3178 transitions. [2018-10-24 18:09:19,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-24 18:09:19,163 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:09:19,163 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:09:19,163 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:09:19,163 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:09:19,164 INFO L82 PathProgramCache]: Analyzing trace with hash 457598944, now seen corresponding path program 1 times [2018-10-24 18:09:19,164 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:09:19,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:19,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:09:19,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:19,165 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:09:19,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:09:19,354 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:09:19,355 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:09:19,355 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:09:19,356 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 105 with the following transitions: [2018-10-24 18:09:19,358 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [93], [95], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [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], [534], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 18:09:19,418 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:09:19,418 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:09:21,904 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:09:33,478 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:09:33,480 INFO L272 AbstractInterpreter]: Visited 87 different actions 492 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:09:33,493 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:09:33,493 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:09:35,230 INFO L232 lantSequenceWeakener]: Weakened 15 states. On average, predicates are now at 78.1% of their original sizes. [2018-10-24 18:09:35,230 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:09:51,552 INFO L413 sIntCurrentIteration]: We have 103 unified AI predicates [2018-10-24 18:09:51,552 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:09:51,553 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:09:51,553 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [7] total 23 [2018-10-24 18:09:51,553 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:09:51,554 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-24 18:09:51,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-24 18:09:51,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2018-10-24 18:09:51,555 INFO L87 Difference]: Start difference. First operand 2165 states and 3178 transitions. Second operand 18 states. [2018-10-24 18:12:58,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:12:58,483 INFO L93 Difference]: Finished difference Result 5720 states and 8569 transitions. [2018-10-24 18:12:58,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-24 18:12:58,483 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 104 [2018-10-24 18:12:58,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:12:58,504 INFO L225 Difference]: With dead ends: 5720 [2018-10-24 18:12:58,504 INFO L226 Difference]: Without dead ends: 3561 [2018-10-24 18:12:58,518 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 109 GetRequests, 75 SyntacticMatches, 12 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=131, Invalid=421, Unknown=0, NotChecked=0, Total=552 [2018-10-24 18:12:58,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3561 states. [2018-10-24 18:12:58,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3561 to 3447. [2018-10-24 18:12:58,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3447 states. [2018-10-24 18:12:58,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3447 states to 3447 states and 4603 transitions. [2018-10-24 18:12:58,685 INFO L78 Accepts]: Start accepts. Automaton has 3447 states and 4603 transitions. Word has length 104 [2018-10-24 18:12:58,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:12:58,686 INFO L481 AbstractCegarLoop]: Abstraction has 3447 states and 4603 transitions. [2018-10-24 18:12:58,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-24 18:12:58,686 INFO L276 IsEmpty]: Start isEmpty. Operand 3447 states and 4603 transitions. [2018-10-24 18:12:58,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-24 18:12:58,689 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:12:58,689 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:12:58,689 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:12:58,690 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:12:58,690 INFO L82 PathProgramCache]: Analyzing trace with hash -528442280, now seen corresponding path program 1 times [2018-10-24 18:12:58,690 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:12:58,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:12:58,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:12:58,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:12:58,691 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:12:58,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:12:59,005 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:12:59,557 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:12:59,558 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:12:59,558 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:12:59,558 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 141 with the following transitions: [2018-10-24 18:12:59,559 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [93], [95], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [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], [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], [678], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 18:12:59,566 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:12:59,566 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-24 18:13:00,875 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-24 18:13:00,876 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-24 18:13:00,877 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 18:13:00,877 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:13:00,877 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 18:13:00,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:13:00,892 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 18:13:00,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:13:00,982 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 18:13:01,000 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 18:13:01,201 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 18:13:01,202 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:13:01,208 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:13:01,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:13:01 BoogieIcfgContainer [2018-10-24 18:13:01,209 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:13:01,209 INFO L168 Benchmark]: Toolchain (without parser) took 238871.49 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 18:13:01,210 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 18:13:01,211 INFO L168 Benchmark]: CACSL2BoogieTranslator took 684.61 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-24 18:13:01,212 INFO L168 Benchmark]: Boogie Procedure Inliner took 202.25 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 752.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -839.5 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2018-10-24 18:13:01,213 INFO L168 Benchmark]: Boogie Preprocessor took 112.48 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2018-10-24 18:13:01,214 INFO L168 Benchmark]: RCFGBuilder took 2949.87 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 115.4 MB). Peak memory consumption was 115.4 MB. Max. memory is 7.1 GB. [2018-10-24 18:13:01,214 INFO L168 Benchmark]: TraceAbstraction took 234917.43 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.0 GB in the end (delta: -854.6 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-24 18:13:01,219 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 684.61 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 202.25 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 752.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -839.5 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.48 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2949.87 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 115.4 MB). Peak memory consumption was 115.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 234917.43 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.0 GB in the end (delta: -854.6 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 55). Cancelled while BasicCegarLoop was analyzing trace of length 141 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 7 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 234.8s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 198.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 510 SDtfs, 3982 SDslu, 575 SDs, 0 SdLazy, 5158 SolverSat, 1160 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 108.2s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 135 GetRequests, 83 SyntacticMatches, 14 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 18.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3447occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 15.4s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.9910299704516672 AbsIntWeakeningRatio, 0.1941747572815534 AbsIntAvgWeakeningVarsNumRemoved, 232.83495145631068 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 159 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 328 NumberOfCodeBlocks, 328 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 324 ConstructedInterpolants, 0 QuantifiedInterpolants, 183823 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 43/51 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown