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_label32_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 22:38:06,885 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:38:06,887 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:38:06,899 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:38:06,900 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:38:06,901 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:38:06,902 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:38:06,904 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:38:06,906 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:38:06,907 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:38:06,908 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:38:06,908 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:38:06,909 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:38:06,910 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:38:06,911 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:38:06,912 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:38:06,913 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:38:06,915 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:38:06,917 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:38:06,919 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:38:06,920 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:38:06,921 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:38:06,924 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-26 22:38:06,931 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 22:38:06,932 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 22:38:06,933 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 22:38:06,934 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 22:38:06,934 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 [2018-10-26 22:38:06,950 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:38:06,950 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:38:06,951 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:38:06,951 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 22:38:06,952 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 22:38:06,952 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 22:38:06,952 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 22:38:06,952 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 22:38:06,952 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-26 22:38:06,953 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 22:38:06,953 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 22:38:06,953 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 22:38:06,954 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:38:06,954 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 22:38:06,954 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:38:06,954 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:38:06,955 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:38:06,955 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:38:06,955 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:38:06,955 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:38:06,956 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:38:06,956 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:38:06,956 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:38:06,956 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:38:06,956 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:38:06,957 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:38:06,957 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:38:06,957 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:38:06,957 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 22:38:06,957 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:38:06,957 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 22:38:06,958 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 22:38:06,958 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 22:38:06,958 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-26 22:38:07,006 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:38:07,026 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:38:07,030 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:38:07,032 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:38:07,032 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:38:07,033 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label32_false-unreach-call_false-termination.c [2018-10-26 22:38:07,100 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1342afece/19a5ac568dc646468f388fc7edea555c/FLAG668351b8c [2018-10-26 22:38:07,651 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:38:07,652 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label32_false-unreach-call_false-termination.c [2018-10-26 22:38:07,665 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1342afece/19a5ac568dc646468f388fc7edea555c/FLAG668351b8c [2018-10-26 22:38:07,689 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1342afece/19a5ac568dc646468f388fc7edea555c [2018-10-26 22:38:07,703 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:38:07,704 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 22:38:07,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:38:07,705 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:38:07,711 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:38:07,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:38:07" (1/1) ... [2018-10-26 22:38:07,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ed858fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:07, skipping insertion in model container [2018-10-26 22:38:07,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:38:07" (1/1) ... [2018-10-26 22:38:07,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:38:07,807 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:38:08,278 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:38:08,289 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:38:08,386 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:38:08,406 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:38:08,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:08 WrapperNode [2018-10-26 22:38:08,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:38:08,408 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 22:38:08,408 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 22:38:08,409 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 22:38:08,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:08" (1/1) ... [2018-10-26 22:38:08,440 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:08" (1/1) ... [2018-10-26 22:38:08,602 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 22:38:08,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:38:08,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:38:08,603 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:38:08,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:08" (1/1) ... [2018-10-26 22:38:08,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:08" (1/1) ... [2018-10-26 22:38:08,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:08" (1/1) ... [2018-10-26 22:38:08,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:08" (1/1) ... [2018-10-26 22:38:08,654 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:08" (1/1) ... [2018-10-26 22:38:08,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:08" (1/1) ... [2018-10-26 22:38:08,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:08" (1/1) ... [2018-10-26 22:38:08,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:38:08,704 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:38:08,704 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:38:08,704 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:38:08,706 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:08" (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 [2018-10-26 22:38:08,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 22:38:08,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 22:38:08,780 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-26 22:38:08,780 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-26 22:38:08,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:38:08,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:38:08,782 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 22:38:08,782 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 22:38:12,198 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:38:12,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:38:12 BoogieIcfgContainer [2018-10-26 22:38:12,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:38:12,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:38:12,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:38:12,204 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:38:12,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:38:07" (1/3) ... [2018-10-26 22:38:12,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f47d82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:38:12, skipping insertion in model container [2018-10-26 22:38:12,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:08" (2/3) ... [2018-10-26 22:38:12,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f47d82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:38:12, skipping insertion in model container [2018-10-26 22:38:12,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:38:12" (3/3) ... [2018-10-26 22:38:12,208 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label32_false-unreach-call_false-termination.c [2018-10-26 22:38:12,218 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:38:12,227 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:38:12,245 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:38:12,284 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:38:12,284 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:38:12,284 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:38:12,285 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:38:12,285 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:38:12,285 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:38:12,285 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:38:12,285 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:38:12,311 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-10-26 22:38:12,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-10-26 22:38:12,322 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:38:12,324 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] [2018-10-26 22:38:12,326 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:38:12,332 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:38:12,332 INFO L82 PathProgramCache]: Analyzing trace with hash -482590571, now seen corresponding path program 1 times [2018-10-26 22:38:12,334 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 22:38:12,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:38:12,389 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:38:12,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:38:12,390 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 22:38:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:38:12,943 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-26 22:38:13,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:38:13,079 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:38:13,080 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:38:13,081 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 22:38:13,087 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 22:38:13,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 22:38:13,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:38:13,109 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 3 states. [2018-10-26 22:38:14,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:38:14,683 INFO L93 Difference]: Finished difference Result 550 states and 941 transitions. [2018-10-26 22:38:14,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 22:38:14,685 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2018-10-26 22:38:14,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:38:14,704 INFO L225 Difference]: With dead ends: 550 [2018-10-26 22:38:14,705 INFO L226 Difference]: Without dead ends: 340 [2018-10-26 22:38:14,712 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:38:14,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-10-26 22:38:14,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-10-26 22:38:14,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-10-26 22:38:14,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 541 transitions. [2018-10-26 22:38:14,779 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 541 transitions. Word has length 81 [2018-10-26 22:38:14,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:38:14,780 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 541 transitions. [2018-10-26 22:38:14,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 22:38:14,781 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 541 transitions. [2018-10-26 22:38:14,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-26 22:38:14,786 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:38:14,786 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 22:38:14,787 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:38:14,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:38:14,787 INFO L82 PathProgramCache]: Analyzing trace with hash 2016856214, now seen corresponding path program 1 times [2018-10-26 22:38:14,788 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 22:38:14,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:38:14,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:38:14,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:38:14,789 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 22:38:14,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:38:14,952 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:38:14,953 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:38:14,953 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 22:38:14,953 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 22:38:14,955 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 22:38:14,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 22:38:14,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 22:38:14,956 INFO L87 Difference]: Start difference. First operand 340 states and 541 transitions. Second operand 6 states. [2018-10-26 22:38:16,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:38:16,706 INFO L93 Difference]: Finished difference Result 1075 states and 1784 transitions. [2018-10-26 22:38:16,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 22:38:16,708 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2018-10-26 22:38:16,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:38:16,718 INFO L225 Difference]: With dead ends: 1075 [2018-10-26 22:38:16,718 INFO L226 Difference]: Without dead ends: 741 [2018-10-26 22:38:16,725 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 [2018-10-26 22:38:16,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2018-10-26 22:38:16,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 724. [2018-10-26 22:38:16,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 724 states. [2018-10-26 22:38:16,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1120 transitions. [2018-10-26 22:38:16,779 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1120 transitions. Word has length 92 [2018-10-26 22:38:16,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:38:16,779 INFO L481 AbstractCegarLoop]: Abstraction has 724 states and 1120 transitions. [2018-10-26 22:38:16,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 22:38:16,779 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1120 transitions. [2018-10-26 22:38:16,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-26 22:38:16,785 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:38:16,786 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 22:38:16,786 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:38:16,786 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:38:16,786 INFO L82 PathProgramCache]: Analyzing trace with hash -2145996606, now seen corresponding path program 1 times [2018-10-26 22:38:16,787 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 22:38:16,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:38:16,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:38:16,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:38:16,790 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 22:38:16,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:38:17,197 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-26 22:38:17,386 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:38:17,386 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:38:17,387 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 22:38:17,388 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 94 with the following transitions: [2018-10-26 22:38:17,390 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [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], [285], [287], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-26 22:38:17,461 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 22:38:17,461 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 22:38:51,620 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 22:38:51,622 INFO L272 AbstractInterpreter]: Visited 84 different actions 148 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-10-26 22:38:51,638 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:38:51,638 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 22:38:56,798 INFO L227 lantSequenceWeakener]: Weakened 72 states. On average, predicates are now at 80.37% of their original sizes. [2018-10-26 22:38:56,799 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 22:39:25,023 INFO L415 sIntCurrentIteration]: We unified 92 AI predicates to 92 [2018-10-26 22:39:25,023 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 22:39:25,024 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 22:39:25,024 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [7] total 23 [2018-10-26 22:39:25,024 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 22:39:25,025 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-26 22:39:25,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-26 22:39:25,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2018-10-26 22:39:25,026 INFO L87 Difference]: Start difference. First operand 724 states and 1120 transitions. Second operand 18 states. Received shutdown request... [2018-10-26 22:42:31,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-26 22:42:31,148 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 22:42:31,154 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 22:42:31,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 10:42:31 BoogieIcfgContainer [2018-10-26 22:42:31,155 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 22:42:31,156 INFO L168 Benchmark]: Toolchain (without parser) took 263452.49 ms. Allocated memory was 1.5 GB in the beginning and 4.3 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 927.1 MB. Max. memory is 7.1 GB. [2018-10-26 22:42:31,157 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. [2018-10-26 22:42:31,158 INFO L168 Benchmark]: CACSL2BoogieTranslator took 702.29 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. [2018-10-26 22:42:31,158 INFO L168 Benchmark]: Boogie Procedure Inliner took 193.87 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -827.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2018-10-26 22:42:31,160 INFO L168 Benchmark]: Boogie Preprocessor took 100.86 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. [2018-10-26 22:42:31,160 INFO L168 Benchmark]: RCFGBuilder took 3495.65 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: 103.9 MB). Peak memory consumption was 103.9 MB. Max. memory is 7.1 GB. [2018-10-26 22:42:31,161 INFO L168 Benchmark]: TraceAbstraction took 258954.90 ms. Allocated memory was 2.3 GB in the beginning and 4.3 GB in the end (delta: 2.0 GB). Free memory was 2.1 GB in the beginning and 3.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 864.6 MB. Max. memory is 7.1 GB. [2018-10-26 22:42:31,166 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 702.29 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 193.87 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -827.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.86 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 3495.65 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: 103.9 MB). Peak memory consumption was 103.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 258954.90 ms. Allocated memory was 2.3 GB in the beginning and 4.3 GB in the end (delta: 2.0 GB). Free memory was 2.1 GB in the beginning and 3.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 864.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 398]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 398). Cancelled while BasicCegarLoop was constructing difference of abstraction (724states) and FLOYD_HOARE automaton (currently 24 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (840 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 208 locations, 1 error locations. TIMEOUT Result, 258.8s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 189.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 300 SDtfs, 2138 SDslu, 207 SDs, 0 SdLazy, 2141 SolverSat, 589 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 83.8s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 119 GetRequests, 81 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 46.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=724occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 34.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9919519769731859 AbsIntWeakeningRatio, 0.31521739130434784 AbsIntAvgWeakeningVarsNumRemoved, 158.31521739130434 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 17 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 266 NumberOfCodeBlocks, 266 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 263 ConstructedInterpolants, 0 QuantifiedInterpolants, 72363 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 11/17 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown