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/Problem01_label52_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 23:14:39,395 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 23:14:39,397 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 23:14:39,409 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 23:14:39,410 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 23:14:39,411 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 23:14:39,412 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 23:14:39,414 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 23:14:39,416 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 23:14:39,416 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 23:14:39,417 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 23:14:39,418 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 23:14:39,419 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 23:14:39,420 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 23:14:39,421 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 23:14:39,422 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 23:14:39,423 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 23:14:39,424 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 23:14:39,426 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 23:14:39,428 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 23:14:39,429 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 23:14:39,431 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 23:14:39,433 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 23:14:39,448 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 [2018-10-23 23:14:39,482 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 23:14:39,482 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 23:14:39,483 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 23:14:39,483 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 23:14:39,484 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 23:14:39,484 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 23:14:39,484 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 23:14:39,484 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 23:14:39,484 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 23:14:39,484 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 23:14:39,485 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 23:14:39,485 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 23:14:39,485 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 23:14:39,486 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 23:14:39,486 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 23:14:39,487 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 23:14:39,487 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 23:14:39,487 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 23:14:39,487 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 23:14:39,487 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 23:14:39,487 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 23:14:39,488 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 23:14:39,488 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 23:14:39,488 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 23:14:39,488 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 23:14:39,488 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 23:14:39,489 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 23:14:39,490 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 23:14:39,490 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 23:14:39,490 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 23:14:39,490 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 23:14:39,491 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 23:14:39,491 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 23:14:39,491 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 23:14:39,546 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 23:14:39,562 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 23:14:39,567 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 23:14:39,569 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 23:14:39,570 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 23:14:39,571 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label52_true-unreach-call_false-termination.c [2018-10-23 23:14:39,639 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/448b4bfc7/86d5c8b9d69f4ebdbd48583435d7e249/FLAG141aeeb45 [2018-10-23 23:14:40,244 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 23:14:40,245 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label52_true-unreach-call_false-termination.c [2018-10-23 23:14:40,259 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/448b4bfc7/86d5c8b9d69f4ebdbd48583435d7e249/FLAG141aeeb45 [2018-10-23 23:14:40,280 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/448b4bfc7/86d5c8b9d69f4ebdbd48583435d7e249 [2018-10-23 23:14:40,291 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 23:14:40,293 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 23:14:40,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 23:14:40,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 23:14:40,300 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 23:14:40,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:14:40" (1/1) ... [2018-10-23 23:14:40,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bedfbfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:14:40, skipping insertion in model container [2018-10-23 23:14:40,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:14:40" (1/1) ... [2018-10-23 23:14:40,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 23:14:40,395 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 23:14:40,805 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:14:40,813 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 23:14:40,951 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:14:40,974 INFO L193 MainTranslator]: Completed translation [2018-10-23 23:14:40,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:14:40 WrapperNode [2018-10-23 23:14:40,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 23:14:40,975 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 23:14:40,976 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 23:14:40,976 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 23:14:40,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:14:40" (1/1) ... [2018-10-23 23:14:41,004 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:14:40" (1/1) ... [2018-10-23 23:14:41,158 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 23:14:41,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 23:14:41,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 23:14:41,159 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 23:14:41,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:14:40" (1/1) ... [2018-10-23 23:14:41,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:14:40" (1/1) ... [2018-10-23 23:14:41,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:14:40" (1/1) ... [2018-10-23 23:14:41,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:14:40" (1/1) ... [2018-10-23 23:14:41,217 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:14:40" (1/1) ... [2018-10-23 23:14:41,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:14:40" (1/1) ... [2018-10-23 23:14:41,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:14:40" (1/1) ... [2018-10-23 23:14:41,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 23:14:41,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 23:14:41,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 23:14:41,254 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 23:14:41,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:14:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 23:14:41,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 23:14:41,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 23:14:41,334 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 23:14:41,334 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 23:14:41,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 23:14:41,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 23:14:41,335 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 23:14:41,335 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 23:14:45,006 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 23:14:45,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:14:45 BoogieIcfgContainer [2018-10-23 23:14:45,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 23:14:45,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 23:14:45,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 23:14:45,019 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 23:14:45,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 11:14:40" (1/3) ... [2018-10-23 23:14:45,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23202f10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:14:45, skipping insertion in model container [2018-10-23 23:14:45,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:14:40" (2/3) ... [2018-10-23 23:14:45,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23202f10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:14:45, skipping insertion in model container [2018-10-23 23:14:45,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:14:45" (3/3) ... [2018-10-23 23:14:45,025 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label52_true-unreach-call_false-termination.c [2018-10-23 23:14:45,036 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 23:14:45,051 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 23:14:45,070 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 23:14:45,127 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 23:14:45,127 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 23:14:45,127 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 23:14:45,128 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 23:14:45,128 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 23:14:45,128 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 23:14:45,128 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 23:14:45,129 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 23:14:45,160 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-10-23 23:14:45,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-23 23:14:45,175 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:14:45,176 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:14:45,179 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:14:45,185 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:14:45,186 INFO L82 PathProgramCache]: Analyzing trace with hash -197406427, now seen corresponding path program 1 times [2018-10-23 23:14:45,188 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:14:45,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:14:45,244 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:14:45,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:14:45,244 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:14:45,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:14:45,892 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:14:45,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:14:45,975 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:14:45,975 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 23:14:45,976 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:14:45,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 23:14:45,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 23:14:45,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:14:46,002 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 3 states. [2018-10-23 23:14:47,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:14:47,642 INFO L93 Difference]: Finished difference Result 550 states and 941 transitions. [2018-10-23 23:14:47,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 23:14:47,646 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2018-10-23 23:14:47,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:14:47,666 INFO L225 Difference]: With dead ends: 550 [2018-10-23 23:14:47,666 INFO L226 Difference]: Without dead ends: 340 [2018-10-23 23:14:47,673 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 [2018-10-23 23:14:47,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-10-23 23:14:47,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-10-23 23:14:47,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-10-23 23:14:47,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 569 transitions. [2018-10-23 23:14:47,763 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 569 transitions. Word has length 133 [2018-10-23 23:14:47,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:14:47,764 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 569 transitions. [2018-10-23 23:14:47,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 23:14:47,764 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 569 transitions. [2018-10-23 23:14:47,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-23 23:14:47,774 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:14:47,774 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:14:47,774 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:14:47,775 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:14:47,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1386763570, now seen corresponding path program 1 times [2018-10-23 23:14:47,775 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:14:47,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:14:47,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:14:47,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:14:47,778 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:14:47,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:14:48,051 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:14:48,302 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:14:48,303 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:14:48,303 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 23:14:48,303 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:14:48,309 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 23:14:48,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 23:14:48,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:14:48,310 INFO L87 Difference]: Start difference. First operand 340 states and 569 transitions. Second operand 5 states. [2018-10-23 23:14:50,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:14:50,419 INFO L93 Difference]: Finished difference Result 1079 states and 1888 transitions. [2018-10-23 23:14:50,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 23:14:50,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2018-10-23 23:14:50,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:14:50,433 INFO L225 Difference]: With dead ends: 1079 [2018-10-23 23:14:50,433 INFO L226 Difference]: Without dead ends: 745 [2018-10-23 23:14:50,438 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 23:14:50,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2018-10-23 23:14:50,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 733. [2018-10-23 23:14:50,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2018-10-23 23:14:50,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1163 transitions. [2018-10-23 23:14:50,500 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1163 transitions. Word has length 143 [2018-10-23 23:14:50,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:14:50,500 INFO L481 AbstractCegarLoop]: Abstraction has 733 states and 1163 transitions. [2018-10-23 23:14:50,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 23:14:50,501 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1163 transitions. [2018-10-23 23:14:50,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-23 23:14:50,507 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:14:50,508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:14:50,508 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:14:50,508 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:14:50,509 INFO L82 PathProgramCache]: Analyzing trace with hash 130268386, now seen corresponding path program 1 times [2018-10-23 23:14:50,509 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:14:50,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:14:50,510 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:14:50,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:14:50,511 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:14:50,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:14:50,816 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-23 23:14:50,816 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:14:50,817 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:14:50,818 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 154 with the following transitions: [2018-10-23 23:14:50,820 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [46], [49], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [601], [609], [617], [625], [633], [641], [649], [657], [665], [673], [681], [689], [697], [701], [703], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-23 23:14:50,900 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:14:50,900 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 23:15:00,622 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 23:15:00,624 INFO L272 AbstractInterpreter]: Visited 68 different actions 68 times. Never merged. Never widened. Never found a fixpoint. Largest state had 42 variables. [2018-10-23 23:15:00,645 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:15:00,645 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 23:15:03,015 INFO L232 lantSequenceWeakener]: Weakened 83 states. On average, predicates are now at 79.74% of their original sizes. [2018-10-23 23:15:03,015 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 23:15:04,095 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 23:15:04,097 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 23:15:04,097 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [4] total 14 [2018-10-23 23:15:04,097 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:15:04,098 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-23 23:15:04,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-23 23:15:04,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-10-23 23:15:04,099 INFO L87 Difference]: Start difference. First operand 733 states and 1163 transitions. Second operand 12 states. [2018-10-23 23:15:15,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:15:15,876 INFO L93 Difference]: Finished difference Result 1521 states and 2423 transitions. [2018-10-23 23:15:15,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-23 23:15:15,876 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 153 [2018-10-23 23:15:15,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:15:15,882 INFO L225 Difference]: With dead ends: 1521 [2018-10-23 23:15:15,882 INFO L226 Difference]: Without dead ends: 794 [2018-10-23 23:15:15,885 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 158 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2018-10-23 23:15:15,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2018-10-23 23:15:15,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 794. [2018-10-23 23:15:15,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2018-10-23 23:15:15,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1232 transitions. [2018-10-23 23:15:15,927 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1232 transitions. Word has length 153 [2018-10-23 23:15:15,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:15:15,928 INFO L481 AbstractCegarLoop]: Abstraction has 794 states and 1232 transitions. [2018-10-23 23:15:15,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-23 23:15:15,928 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1232 transitions. [2018-10-23 23:15:15,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-23 23:15:15,936 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:15:15,936 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:15:15,937 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:15:15,937 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:15:15,937 INFO L82 PathProgramCache]: Analyzing trace with hash -2100798917, now seen corresponding path program 1 times [2018-10-23 23:15:15,937 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:15:15,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:15:15,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:15:15,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:15:15,939 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:15:15,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:15:16,410 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:15:16,410 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:15:16,411 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:15:16,411 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 156 with the following transitions: [2018-10-23 23:15:16,411 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [9], [10], [14], [17], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [601], [609], [617], [625], [633], [641], [649], [657], [665], [673], [681], [689], [697], [701], [703], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-23 23:15:16,426 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:15:16,427 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 23:15:58,916 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 23:15:58,917 INFO L272 AbstractInterpreter]: Visited 137 different actions 202 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-10-23 23:15:58,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:15:58,923 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 23:16:09,089 INFO L232 lantSequenceWeakener]: Weakened 36 states. On average, predicates are now at 82.69% of their original sizes. [2018-10-23 23:16:09,089 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 23:18:20,214 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 23:18:20,215 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 23:18:20,215 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [6] total 25 [2018-10-23 23:18:20,216 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:18:20,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-23 23:18:20,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-23 23:18:20,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2018-10-23 23:18:20,217 INFO L87 Difference]: Start difference. First operand 794 states and 1232 transitions. Second operand 21 states. Received shutdown request... [2018-10-23 23:19:03,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-23 23:19:03,837 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 23:19:03,844 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 23:19:03,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 11:19:03 BoogieIcfgContainer [2018-10-23 23:19:03,844 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 23:19:03,845 INFO L168 Benchmark]: Toolchain (without parser) took 263553.19 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.4 GB). Peak memory consumption was 947.9 MB. Max. memory is 7.1 GB. [2018-10-23 23:19:03,846 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-10-23 23:19:03,847 INFO L168 Benchmark]: CACSL2BoogieTranslator took 681.01 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. [2018-10-23 23:19:03,848 INFO L168 Benchmark]: Boogie Procedure Inliner took 182.74 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 756.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -835.8 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2018-10-23 23:19:03,849 INFO L168 Benchmark]: Boogie Preprocessor took 94.98 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: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2018-10-23 23:19:03,850 INFO L168 Benchmark]: RCFGBuilder took 3756.94 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: 117.7 MB). Peak memory consumption was 117.7 MB. Max. memory is 7.1 GB. [2018-10-23 23:19:03,852 INFO L168 Benchmark]: TraceAbstraction took 258832.33 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 2.1 GB in the beginning and 2.9 GB in the end (delta: -790.0 MB). Peak memory consumption was 851.0 MB. Max. memory is 7.1 GB. [2018-10-23 23:19:03,860 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 681.01 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 182.74 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 756.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -835.8 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 94.98 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: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3756.94 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: 117.7 MB). Peak memory consumption was 117.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 258832.33 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 2.1 GB in the beginning and 2.9 GB in the end (delta: -790.0 MB). Peak memory consumption was 851.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 554]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 554). Cancelled while BasicCegarLoop was constructing difference of abstraction (794states) and FLOYD_HOARE automaton (currently 14 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (31 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 208 locations, 1 error locations. TIMEOUT Result, 258.7s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 59.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 470 SDtfs, 1166 SDslu, 324 SDs, 0 SdLazy, 1619 SolverSat, 397 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.6s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 334 GetRequests, 259 SyntacticMatches, 25 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 146.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=794occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 52.3s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9948456347308577 AbsIntWeakeningRatio, 0.20915032679738563 AbsIntAvgWeakeningVarsNumRemoved, 1119.2614379084966 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 584 NumberOfCodeBlocks, 584 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 580 ConstructedInterpolants, 0 QuantifiedInterpolants, 211456 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 35/50 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown