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/Problem02_label19_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 23:21:21,354 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 23:21:21,357 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 23:21:21,370 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 23:21:21,371 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 23:21:21,372 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 23:21:21,373 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 23:21:21,375 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 23:21:21,377 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 23:21:21,378 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 23:21:21,379 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 23:21:21,379 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 23:21:21,380 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 23:21:21,381 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 23:21:21,382 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 23:21:21,383 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 23:21:21,384 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 23:21:21,386 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 23:21:21,390 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 23:21:21,392 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 23:21:21,395 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 23:21:21,396 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 23:21:21,399 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 23:21:21,417 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 23:21:21,438 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 23:21:21,439 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 23:21:21,440 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 23:21:21,440 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 23:21:21,440 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 23:21:21,440 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 23:21:21,440 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 23:21:21,441 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 23:21:21,441 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 23:21:21,441 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 23:21:21,441 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 23:21:21,441 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 23:21:21,442 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 23:21:21,442 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 23:21:21,443 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 23:21:21,443 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 23:21:21,443 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 23:21:21,443 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 23:21:21,443 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 23:21:21,444 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 23:21:21,444 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 23:21:21,444 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 23:21:21,444 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 23:21:21,444 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 23:21:21,445 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 23:21:21,445 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 23:21:21,445 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 23:21:21,445 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 23:21:21,445 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 23:21:21,446 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 23:21:21,446 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 23:21:21,446 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 23:21:21,446 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 23:21:21,446 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 23:21:21,510 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 23:21:21,529 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 23:21:21,535 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 23:21:21,537 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 23:21:21,537 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 23:21:21,538 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label19_true-unreach-call_false-termination.c [2018-10-23 23:21:21,613 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/59fc76369/b5b90e9e4fa24877b626fdf6009225d0/FLAGbcc981b69 [2018-10-23 23:21:22,171 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 23:21:22,172 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label19_true-unreach-call_false-termination.c [2018-10-23 23:21:22,185 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/59fc76369/b5b90e9e4fa24877b626fdf6009225d0/FLAGbcc981b69 [2018-10-23 23:21:22,202 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/59fc76369/b5b90e9e4fa24877b626fdf6009225d0 [2018-10-23 23:21:22,214 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 23:21:22,216 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 23:21:22,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 23:21:22,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 23:21:22,222 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 23:21:22,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:21:22" (1/1) ... [2018-10-23 23:21:22,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b7e4d8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:22, skipping insertion in model container [2018-10-23 23:21:22,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:21:22" (1/1) ... [2018-10-23 23:21:22,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 23:21:22,312 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 23:21:22,851 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:21:22,857 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 23:21:23,020 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:21:23,050 INFO L193 MainTranslator]: Completed translation [2018-10-23 23:21:23,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:23 WrapperNode [2018-10-23 23:21:23,051 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 23:21:23,052 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 23:21:23,052 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 23:21:23,053 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 23:21:23,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:23" (1/1) ... [2018-10-23 23:21:23,083 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:23" (1/1) ... [2018-10-23 23:21:23,257 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 23:21:23,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 23:21:23,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 23:21:23,258 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 23:21:23,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:23" (1/1) ... [2018-10-23 23:21:23,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:23" (1/1) ... [2018-10-23 23:21:23,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:23" (1/1) ... [2018-10-23 23:21:23,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:23" (1/1) ... [2018-10-23 23:21:23,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:23" (1/1) ... [2018-10-23 23:21:23,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:23" (1/1) ... [2018-10-23 23:21:23,359 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:23" (1/1) ... [2018-10-23 23:21:23,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 23:21:23,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 23:21:23,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 23:21:23,372 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 23:21:23,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:23" (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 23:21:23,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 23:21:23,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 23:21:23,453 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 23:21:23,453 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 23:21:23,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 23:21:23,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 23:21:23,454 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 23:21:23,454 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 23:21:26,832 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 23:21:26,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:21:26 BoogieIcfgContainer [2018-10-23 23:21:26,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 23:21:26,837 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 23:21:26,837 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 23:21:26,842 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 23:21:26,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 11:21:22" (1/3) ... [2018-10-23 23:21:26,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c49c17a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:21:26, skipping insertion in model container [2018-10-23 23:21:26,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:23" (2/3) ... [2018-10-23 23:21:26,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c49c17a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:21:26, skipping insertion in model container [2018-10-23 23:21:26,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:21:26" (3/3) ... [2018-10-23 23:21:26,846 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label19_true-unreach-call_false-termination.c [2018-10-23 23:21:26,856 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 23:21:26,866 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 23:21:26,883 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 23:21:26,924 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 23:21:26,925 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 23:21:26,925 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 23:21:26,925 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 23:21:26,925 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 23:21:26,925 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 23:21:26,926 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 23:21:26,926 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 23:21:26,951 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-23 23:21:26,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-23 23:21:26,964 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:21:26,965 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] [2018-10-23 23:21:26,968 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:21:26,973 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:21:26,974 INFO L82 PathProgramCache]: Analyzing trace with hash 910633199, now seen corresponding path program 1 times [2018-10-23 23:21:26,976 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:21:27,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:21:27,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:21:27,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:21:27,022 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:21:27,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:21:27,663 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-23 23:21:27,954 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 23:21:27,957 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:21:27,957 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 23:21:27,958 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:21:27,967 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 23:21:27,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 23:21:27,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 23:21:27,991 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 4 states. [2018-10-23 23:21:30,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:21:30,534 INFO L93 Difference]: Finished difference Result 795 states and 1383 transitions. [2018-10-23 23:21:30,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 23:21:30,538 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2018-10-23 23:21:30,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:21:30,562 INFO L225 Difference]: With dead ends: 795 [2018-10-23 23:21:30,562 INFO L226 Difference]: Without dead ends: 552 [2018-10-23 23:21:30,570 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 23:21:30,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2018-10-23 23:21:30,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 382. [2018-10-23 23:21:30,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2018-10-23 23:21:30,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 639 transitions. [2018-10-23 23:21:30,673 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 639 transitions. Word has length 99 [2018-10-23 23:21:30,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:21:30,675 INFO L481 AbstractCegarLoop]: Abstraction has 382 states and 639 transitions. [2018-10-23 23:21:30,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 23:21:30,675 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 639 transitions. [2018-10-23 23:21:30,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-23 23:21:30,682 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:21:30,683 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 23:21:30,683 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:21:30,684 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:21:30,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1723273534, now seen corresponding path program 1 times [2018-10-23 23:21:30,684 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:21:30,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:21:30,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:21:30,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:21:30,686 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:21:30,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:21:31,049 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-23 23:21:31,049 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:21:31,050 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:21:31,051 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 109 with the following transitions: [2018-10-23 23:21:31,053 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [463], [465], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-23 23:21:31,127 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:21:31,127 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 23:21:40,033 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 23:21:40,035 INFO L272 AbstractInterpreter]: Visited 99 different actions 99 times. Never merged. Never widened. Never found a fixpoint. Largest state had 38 variables. [2018-10-23 23:21:40,047 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:21:40,047 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 23:21:42,682 INFO L232 lantSequenceWeakener]: Weakened 93 states. On average, predicates are now at 81.11% of their original sizes. [2018-10-23 23:21:42,682 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 23:21:46,186 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 23:21:46,188 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 23:21:46,188 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [4] total 15 [2018-10-23 23:21:46,188 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:21:46,190 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-23 23:21:46,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-23 23:21:46,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2018-10-23 23:21:46,191 INFO L87 Difference]: Start difference. First operand 382 states and 639 transitions. Second operand 13 states. [2018-10-23 23:23:12,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:23:12,993 INFO L93 Difference]: Finished difference Result 1058 states and 1806 transitions. [2018-10-23 23:23:12,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-23 23:23:12,993 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 108 [2018-10-23 23:23:12,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:23:12,999 INFO L225 Difference]: With dead ends: 1058 [2018-10-23 23:23:13,000 INFO L226 Difference]: Without dead ends: 682 [2018-10-23 23:23:13,003 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 118 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2018-10-23 23:23:13,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2018-10-23 23:23:13,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 529. [2018-10-23 23:23:13,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 529 states. [2018-10-23 23:23:13,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 794 transitions. [2018-10-23 23:23:13,122 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 794 transitions. Word has length 108 [2018-10-23 23:23:13,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:23:13,123 INFO L481 AbstractCegarLoop]: Abstraction has 529 states and 794 transitions. [2018-10-23 23:23:13,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-23 23:23:13,123 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 794 transitions. [2018-10-23 23:23:13,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-23 23:23:13,127 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:23:13,128 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 23:23:13,128 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:23:13,128 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:23:13,129 INFO L82 PathProgramCache]: Analyzing trace with hash -212564618, now seen corresponding path program 1 times [2018-10-23 23:23:13,129 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:23:13,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:23:13,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:23:13,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:23:13,130 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:23:13,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:23:13,339 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:23:13,339 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:23:13,339 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:23:13,340 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 114 with the following transitions: [2018-10-23 23:23:13,340 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [25], [26], [30], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [463], [465], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-23 23:23:13,346 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:23:13,347 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 23:23:34,370 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 23:23:34,371 INFO L272 AbstractInterpreter]: Visited 102 different actions 198 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 38 variables. [2018-10-23 23:23:34,379 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:23:34,379 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 23:23:37,844 INFO L232 lantSequenceWeakener]: Weakened 10 states. On average, predicates are now at 85% of their original sizes. [2018-10-23 23:23:37,844 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-23 23:25:43,269 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 23:25:43,274 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 23:25:43,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 11:25:43 BoogieIcfgContainer [2018-10-23 23:25:43,274 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 23:25:43,275 INFO L168 Benchmark]: Toolchain (without parser) took 261060.41 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-23 23:25:43,277 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 23:25:43,277 INFO L168 Benchmark]: CACSL2BoogieTranslator took 834.33 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 23:25:43,278 INFO L168 Benchmark]: Boogie Procedure Inliner took 204.90 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 733.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -798.0 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2018-10-23 23:25:43,279 INFO L168 Benchmark]: Boogie Preprocessor took 112.62 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 23:25:43,280 INFO L168 Benchmark]: RCFGBuilder took 3465.20 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: 120.0 MB). Peak memory consumption was 120.0 MB. Max. memory is 7.1 GB. [2018-10-23 23:25:43,281 INFO L168 Benchmark]: TraceAbstraction took 256437.92 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.6 GB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -410.0 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-23 23:25:43,289 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 834.33 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 204.90 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 733.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -798.0 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.62 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3465.20 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: 120.0 MB). Peak memory consumption was 120.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 256437.92 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.6 GB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -410.0 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 448]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 448). Cancelled while BasicCegarLoop was analyzing trace of length 114 with TraceHistMax 2,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 16 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 256.3s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 89.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 380 SDtfs, 1377 SDslu, 208 SDs, 0 SdLazy, 1155 SolverSat, 410 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 38.8s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 124 GetRequests, 98 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=529occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 30.0s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9932481147333347 AbsIntWeakeningRatio, 0.2465753424657534 AbsIntAvgWeakeningVarsNumRemoved, 1496.6301369863013 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 2 MinimizatonAttempts, 323 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 207 NumberOfCodeBlocks, 207 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 205 ConstructedInterpolants, 0 QuantifiedInterpolants, 124694 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 4/6 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown