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-d380424 [2018-10-24 19:27:37,966 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 19:27:37,968 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 19:27:37,985 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 19:27:37,985 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 19:27:37,987 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 19:27:37,993 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 19:27:37,995 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 19:27:37,997 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 19:27:37,997 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 19:27:37,998 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 19:27:37,999 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 19:27:38,000 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 19:27:38,001 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 19:27:38,002 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 19:27:38,003 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 19:27:38,003 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 19:27:38,005 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 19:27:38,007 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 19:27:38,009 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 19:27:38,010 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 19:27:38,012 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 19:27:38,014 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 19:27:38,020 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 19:27:38,021 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 19:27:38,022 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 19:27:38,023 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 19:27:38,023 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 19:27:38,039 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 19:27:38,039 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 19:27:38,040 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 19:27:38,040 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 19:27:38,041 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 19:27:38,041 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 19:27:38,041 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 19:27:38,041 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 19:27:38,041 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 19:27:38,042 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 19:27:38,042 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 19:27:38,042 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 19:27:38,043 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 19:27:38,043 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 19:27:38,043 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 19:27:38,043 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 19:27:38,044 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 19:27:38,045 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 19:27:38,045 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 19:27:38,045 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 19:27:38,046 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 19:27:38,046 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 19:27:38,046 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 19:27:38,046 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 19:27:38,046 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:27:38,047 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 19:27:38,047 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 19:27:38,047 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 19:27:38,047 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 19:27:38,048 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 19:27:38,048 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 19:27:38,048 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 19:27:38,048 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 19:27:38,048 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 19:27:38,120 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 19:27:38,140 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 19:27:38,145 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 19:27:38,147 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 19:27:38,147 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 19:27:38,148 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label27_true-unreach-call_false-termination.c [2018-10-24 19:27:38,209 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9f3a44927/f9f50702727a44eb8e790176e4953670/FLAG3020bf81f [2018-10-24 19:27:38,763 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 19:27:38,764 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label27_true-unreach-call_false-termination.c [2018-10-24 19:27:38,786 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9f3a44927/f9f50702727a44eb8e790176e4953670/FLAG3020bf81f [2018-10-24 19:27:38,819 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9f3a44927/f9f50702727a44eb8e790176e4953670 [2018-10-24 19:27:38,830 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 19:27:38,832 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 19:27:38,834 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 19:27:38,834 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 19:27:38,838 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 19:27:38,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:27:38" (1/1) ... [2018-10-24 19:27:38,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@309cd1a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:27:38, skipping insertion in model container [2018-10-24 19:27:38,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:27:38" (1/1) ... [2018-10-24 19:27:38,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 19:27:38,910 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 19:27:39,361 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:27:39,370 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 19:27:39,485 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:27:39,507 INFO L193 MainTranslator]: Completed translation [2018-10-24 19:27:39,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:27:39 WrapperNode [2018-10-24 19:27:39,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 19:27:39,509 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 19:27:39,509 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 19:27:39,510 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 19:27:39,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:27:39" (1/1) ... [2018-10-24 19:27:39,541 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:27:39" (1/1) ... [2018-10-24 19:27:39,696 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 19:27:39,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 19:27:39,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 19:27:39,697 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 19:27:39,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:27:39" (1/1) ... [2018-10-24 19:27:39,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:27:39" (1/1) ... [2018-10-24 19:27:39,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:27:39" (1/1) ... [2018-10-24 19:27:39,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:27:39" (1/1) ... [2018-10-24 19:27:39,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:27:39" (1/1) ... [2018-10-24 19:27:39,747 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:27:39" (1/1) ... [2018-10-24 19:27:39,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:27:39" (1/1) ... [2018-10-24 19:27:39,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 19:27:39,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 19:27:39,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 19:27:39,760 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 19:27:39,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:27:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:27:39,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 19:27:39,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 19:27:39,851 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 19:27:39,851 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 19:27:39,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 19:27:39,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 19:27:39,851 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 19:27:39,851 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 19:27:43,555 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 19:27:43,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:27:43 BoogieIcfgContainer [2018-10-24 19:27:43,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 19:27:43,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 19:27:43,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 19:27:43,561 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 19:27:43,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:27:38" (1/3) ... [2018-10-24 19:27:43,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72afe73b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:27:43, skipping insertion in model container [2018-10-24 19:27:43,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:27:39" (2/3) ... [2018-10-24 19:27:43,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72afe73b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:27:43, skipping insertion in model container [2018-10-24 19:27:43,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:27:43" (3/3) ... [2018-10-24 19:27:43,565 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label27_true-unreach-call_false-termination.c [2018-10-24 19:27:43,584 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 19:27:43,598 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 19:27:43,616 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 19:27:43,671 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 19:27:43,672 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 19:27:43,672 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 19:27:43,672 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 19:27:43,672 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 19:27:43,673 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 19:27:43,673 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 19:27:43,673 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 19:27:43,715 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-24 19:27:43,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-24 19:27:43,731 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:27:43,732 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] [2018-10-24 19:27:43,738 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:27:43,745 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:27:43,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1664661616, now seen corresponding path program 1 times [2018-10-24 19:27:43,748 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:27:43,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:27:43,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:27:43,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:27:43,810 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:27:43,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:27:44,342 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:27:44,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:27:44,466 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:27:44,466 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:27:44,467 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:27:44,473 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:27:44,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:27:44,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:27:44,494 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-10-24 19:27:46,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:27:46,529 INFO L93 Difference]: Finished difference Result 621 states and 1061 transitions. [2018-10-24 19:27:46,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:27:46,532 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2018-10-24 19:27:46,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:27:46,553 INFO L225 Difference]: With dead ends: 621 [2018-10-24 19:27:46,553 INFO L226 Difference]: Without dead ends: 382 [2018-10-24 19:27:46,560 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 [2018-10-24 19:27:46,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-10-24 19:27:46,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 380. [2018-10-24 19:27:46,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2018-10-24 19:27:46,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 641 transitions. [2018-10-24 19:27:46,655 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 641 transitions. Word has length 102 [2018-10-24 19:27:46,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:27:46,656 INFO L481 AbstractCegarLoop]: Abstraction has 380 states and 641 transitions. [2018-10-24 19:27:46,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:27:46,656 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 641 transitions. [2018-10-24 19:27:46,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-24 19:27:46,662 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:27:46,663 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] [2018-10-24 19:27:46,663 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:27:46,664 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:27:46,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1726268791, now seen corresponding path program 1 times [2018-10-24 19:27:46,664 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:27:46,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:27:46,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:27:46,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:27:46,666 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:27:46,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:27:47,049 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:27:47,049 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:27:47,049 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:27:47,051 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 117 with the following transitions: [2018-10-24 19:27:47,053 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] [2018-10-24 19:27:47,141 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:27:47,141 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:28:17,736 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:28:17,738 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. [2018-10-24 19:28:17,755 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:28:17,755 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:28:22,517 INFO L232 lantSequenceWeakener]: Weakened 13 states. On average, predicates are now at 84.62% of their original sizes. [2018-10-24 19:28:22,517 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:30:56,728 INFO L413 sIntCurrentIteration]: We have 115 unified AI predicates [2018-10-24 19:30:56,728 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:30:56,729 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:30:56,729 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [7] total 22 [2018-10-24 19:30:56,730 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:30:56,732 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 19:30:56,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 19:30:56,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-10-24 19:30:56,732 INFO L87 Difference]: Start difference. First operand 380 states and 641 transitions. Second operand 17 states. Received shutdown request... [2018-10-24 19:32:09,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-24 19:32:09,189 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:32:09,195 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:32:09,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:32:09 BoogieIcfgContainer [2018-10-24 19:32:09,195 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:32:09,197 INFO L168 Benchmark]: Toolchain (without parser) took 270365.34 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -144.7 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-24 19:32:09,198 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. [2018-10-24 19:32:09,198 INFO L168 Benchmark]: CACSL2BoogieTranslator took 674.84 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-24 19:32:09,199 INFO L168 Benchmark]: Boogie Procedure Inliner took 187.39 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -810.8 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. [2018-10-24 19:32:09,200 INFO L168 Benchmark]: Boogie Preprocessor took 62.10 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. [2018-10-24 19:32:09,201 INFO L168 Benchmark]: RCFGBuilder took 3796.72 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: 104.3 MB). Peak memory consumption was 104.3 MB. Max. memory is 7.1 GB. [2018-10-24 19:32:09,202 INFO L168 Benchmark]: TraceAbstraction took 265638.38 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 1.6 GB in the end (delta: 530.0 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-24 19:32:09,207 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 674.84 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 187.39 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -810.8 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.10 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 3796.72 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: 104.3 MB). Peak memory consumption was 104.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 265638.38 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 1.6 GB in the end (delta: 530.0 MB). Peak memory consumption was 1.7 GB. 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, 265.5s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 74.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 152 SDtfs, 380 SDslu, 56 SDs, 0 SdLazy, 718 SolverSat, 230 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 33.9s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 127 GetRequests, 62 SyntacticMatches, 42 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 158.7s 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, 30.7s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9933391056960849 AbsIntWeakeningRatio, 0.23478260869565218 AbsIntAvgWeakeningVarsNumRemoved, 865.2260869565217 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, 0.7s 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