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_label27_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 23:23:37,015 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 23:23:37,017 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 23:23:37,032 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 23:23:37,032 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 23:23:37,033 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 23:23:37,034 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 23:23:37,036 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 23:23:37,038 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 23:23:37,039 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 23:23:37,040 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 23:23:37,040 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 23:23:37,041 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 23:23:37,042 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 23:23:37,043 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 23:23:37,044 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 23:23:37,045 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 23:23:37,047 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 23:23:37,049 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 23:23:37,051 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 23:23:37,052 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 23:23:37,053 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 23:23:37,056 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 23:23:37,065 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 23:23:37,083 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 23:23:37,083 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 23:23:37,086 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 23:23:37,087 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 23:23:37,087 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 23:23:37,087 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 23:23:37,087 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 23:23:37,088 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 23:23:37,088 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 23:23:37,088 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 23:23:37,088 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 23:23:37,088 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 23:23:37,089 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 23:23:37,090 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 23:23:37,090 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 23:23:37,090 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 23:23:37,090 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 23:23:37,091 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 23:23:37,091 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 23:23:37,091 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 23:23:37,091 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 23:23:37,091 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 23:23:37,092 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 23:23:37,094 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 23:23:37,094 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 23:23:37,094 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 23:23:37,095 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 23:23:37,095 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 23:23:37,095 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 23:23:37,096 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 23:23:37,096 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 23:23:37,096 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 23:23:37,096 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 23:23:37,096 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 23:23:37,161 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 23:23:37,180 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 23:23:37,184 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 23:23:37,186 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 23:23:37,186 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 23:23:37,187 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label27_true-unreach-call_false-termination.c [2018-10-23 23:23:37,251 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3755eb9c4/44b353db2de741c88630f70dafec7420/FLAG1e3d7d86a [2018-10-23 23:23:37,842 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 23:23:37,843 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label27_true-unreach-call_false-termination.c [2018-10-23 23:23:37,855 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3755eb9c4/44b353db2de741c88630f70dafec7420/FLAG1e3d7d86a [2018-10-23 23:23:37,872 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3755eb9c4/44b353db2de741c88630f70dafec7420 [2018-10-23 23:23:37,884 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 23:23:37,886 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 23:23:37,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 23:23:37,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 23:23:37,891 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 23:23:37,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:23:37" (1/1) ... [2018-10-23 23:23:37,896 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22d35362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:23:37, skipping insertion in model container [2018-10-23 23:23:37,896 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:23:37" (1/1) ... [2018-10-23 23:23:37,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 23:23:37,991 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 23:23:38,461 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:23:38,467 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 23:23:38,584 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:23:38,603 INFO L193 MainTranslator]: Completed translation [2018-10-23 23:23:38,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:23:38 WrapperNode [2018-10-23 23:23:38,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 23:23:38,605 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 23:23:38,605 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 23:23:38,605 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 23:23:38,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:23:38" (1/1) ... [2018-10-23 23:23:38,641 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:23:38" (1/1) ... [2018-10-23 23:23:38,796 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 23:23:38,797 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 23:23:38,797 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 23:23:38,797 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 23:23:38,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:23:38" (1/1) ... [2018-10-23 23:23:38,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:23:38" (1/1) ... [2018-10-23 23:23:38,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:23:38" (1/1) ... [2018-10-23 23:23:38,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:23:38" (1/1) ... [2018-10-23 23:23:38,837 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:23:38" (1/1) ... [2018-10-23 23:23:38,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:23:38" (1/1) ... [2018-10-23 23:23:38,863 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:23:38" (1/1) ... [2018-10-23 23:23:38,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 23:23:38,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 23:23:38,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 23:23:38,872 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 23:23:38,873 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:23:38" (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 23:23:38,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 23:23:38,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 23:23:38,969 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 23:23:38,969 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 23:23:38,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 23:23:38,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 23:23:38,970 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 23:23:38,970 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 23:23:42,333 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 23:23:42,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:23:42 BoogieIcfgContainer [2018-10-23 23:23:42,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 23:23:42,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 23:23:42,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 23:23:42,345 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 23:23:42,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 11:23:37" (1/3) ... [2018-10-23 23:23:42,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f3a398b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:23:42, skipping insertion in model container [2018-10-23 23:23:42,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:23:38" (2/3) ... [2018-10-23 23:23:42,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f3a398b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:23:42, skipping insertion in model container [2018-10-23 23:23:42,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:23:42" (3/3) ... [2018-10-23 23:23:42,356 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label27_true-unreach-call_false-termination.c [2018-10-23 23:23:42,367 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 23:23:42,385 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 23:23:42,404 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 23:23:42,459 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 23:23:42,459 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 23:23:42,459 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 23:23:42,460 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 23:23:42,460 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 23:23:42,460 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 23:23:42,460 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 23:23:42,461 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 23:23:42,487 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-23 23:23:42,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-23 23:23:42,504 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:23:42,505 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] [2018-10-23 23:23:42,511 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:23:42,518 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:23:42,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1664661616, now seen corresponding path program 1 times [2018-10-23 23:23:42,521 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:23:42,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:23:42,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:23:42,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:23:42,570 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:23:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:23:43,204 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:23:43,255 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 23:23:43,257 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:23:43,258 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 23:23:43,258 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:23:43,265 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 23:23:43,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 23:23:43,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:23:43,285 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-10-23 23:23:45,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:23:45,623 INFO L93 Difference]: Finished difference Result 621 states and 1061 transitions. [2018-10-23 23:23:45,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 23:23:45,627 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2018-10-23 23:23:45,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:23:45,654 INFO L225 Difference]: With dead ends: 621 [2018-10-23 23:23:45,654 INFO L226 Difference]: Without dead ends: 382 [2018-10-23 23:23:45,661 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:23:45,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-10-23 23:23:45,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 380. [2018-10-23 23:23:45,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2018-10-23 23:23:45,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 641 transitions. [2018-10-23 23:23:45,743 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 641 transitions. Word has length 102 [2018-10-23 23:23:45,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:23:45,745 INFO L481 AbstractCegarLoop]: Abstraction has 380 states and 641 transitions. [2018-10-23 23:23:45,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 23:23:45,745 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 641 transitions. [2018-10-23 23:23:45,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-23 23:23:45,752 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:23:45,752 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, 1, 1, 1] [2018-10-23 23:23:45,753 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:23:45,753 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:23:45,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1726268791, now seen corresponding path program 1 times [2018-10-23 23:23:45,754 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:23:45,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:23:45,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:23:45,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:23:45,755 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:23:45,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:23:46,379 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-23 23:23:46,617 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 23:23:46,617 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:23:46,618 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:23:46,619 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 117 with the following transitions: [2018-10-23 23:23:46,621 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], [467], [475], [483], [487], [489], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-23 23:23:46,710 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:23:46,711 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 23:24:14,493 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 23:24:14,494 INFO L272 AbstractInterpreter]: Visited 105 different actions 204 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 23:24:14,514 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:24:14,514 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 23:24:18,813 INFO L232 lantSequenceWeakener]: Weakened 13 states. On average, predicates are now at 84.62% of their original sizes. [2018-10-23 23:24:18,815 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 23:26:52,244 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 23:26:52,246 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 23:26:52,246 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [7] total 22 [2018-10-23 23:26:52,246 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:26:52,248 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-23 23:26:52,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-23 23:26:52,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-10-23 23:26:52,249 INFO L87 Difference]: Start difference. First operand 380 states and 641 transitions. Second operand 17 states. Received shutdown request... [2018-10-23 23:28:06,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-23 23:28:06,777 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 23:28:06,783 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 23:28:06,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 11:28:06 BoogieIcfgContainer [2018-10-23 23:28:06,784 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 23:28:06,785 INFO L168 Benchmark]: Toolchain (without parser) took 268899.90 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.2 GB). Peak memory consumption was 745.6 MB. Max. memory is 7.1 GB. [2018-10-23 23:28:06,787 INFO L168 Benchmark]: CDTParser took 0.20 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 23:28:06,787 INFO L168 Benchmark]: CACSL2BoogieTranslator took 716.65 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-23 23:28:06,788 INFO L168 Benchmark]: Boogie Procedure Inliner took 191.66 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 742.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -829.2 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2018-10-23 23:28:06,789 INFO L168 Benchmark]: Boogie Preprocessor took 74.88 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 23:28:06,790 INFO L168 Benchmark]: RCFGBuilder took 3462.76 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: 102.1 MB). Peak memory consumption was 102.1 MB. Max. memory is 7.1 GB. [2018-10-23 23:28:06,791 INFO L168 Benchmark]: TraceAbstraction took 264445.56 ms. Allocated memory was 2.3 GB in the beginning and 3.5 GB in the end (delta: 1.2 GB). Free memory was 2.1 GB in the beginning and 2.7 GB in the end (delta: -557.7 MB). Peak memory consumption was 688.0 MB. Max. memory is 7.1 GB. [2018-10-23 23:28:06,796 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 716.65 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 191.66 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 742.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -829.2 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 74.88 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 3462.76 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: 102.1 MB). Peak memory consumption was 102.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 264445.56 ms. Allocated memory was 2.3 GB in the beginning and 3.5 GB in the end (delta: 1.2 GB). Free memory was 2.1 GB in the beginning and 2.7 GB in the end (delta: -557.7 MB). Peak memory consumption was 688.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 457]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 457). Cancelled while BasicCegarLoop was constructing difference of abstraction (380states) and FLOYD_HOARE automaton (currently 21 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (167 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 264.3s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 76.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 152 SDtfs, 380 SDslu, 56 SDs, 0 SdLazy, 718 SolverSat, 230 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 36.8s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 127 GetRequests, 62 SyntacticMatches, 42 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 158.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=380occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 27.8s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9933391056960849 AbsIntWeakeningRatio, 0.23478260869565218 AbsIntAvgWeakeningVarsNumRemoved, 821.3652173913043 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 218 NumberOfCodeBlocks, 218 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 216 ConstructedInterpolants, 0 QuantifiedInterpolants, 97813 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 0/11 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown