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_label40_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 23:12:44,121 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 23:12:44,123 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 23:12:44,135 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 23:12:44,135 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 23:12:44,137 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 23:12:44,138 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 23:12:44,140 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 23:12:44,141 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 23:12:44,142 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 23:12:44,143 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 23:12:44,143 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 23:12:44,144 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 23:12:44,145 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 23:12:44,146 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 23:12:44,147 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 23:12:44,148 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 23:12:44,150 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 23:12:44,152 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 23:12:44,154 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 23:12:44,160 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 23:12:44,161 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 23:12:44,164 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 23:12:44,172 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 23:12:44,186 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 23:12:44,187 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 23:12:44,188 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 23:12:44,188 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 23:12:44,188 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 23:12:44,188 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 23:12:44,188 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 23:12:44,189 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 23:12:44,189 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 23:12:44,189 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 23:12:44,189 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 23:12:44,189 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 23:12:44,190 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 23:12:44,190 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 23:12:44,191 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 23:12:44,191 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 23:12:44,191 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 23:12:44,191 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 23:12:44,192 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 23:12:44,192 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 23:12:44,192 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 23:12:44,192 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 23:12:44,193 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 23:12:44,193 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 23:12:44,193 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 23:12:44,193 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 23:12:44,193 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 23:12:44,194 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 23:12:44,194 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 23:12:44,194 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 23:12:44,194 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 23:12:44,194 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 23:12:44,195 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 23:12:44,195 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 23:12:44,253 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 23:12:44,269 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 23:12:44,273 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 23:12:44,274 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 23:12:44,275 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 23:12:44,276 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label40_true-unreach-call_false-termination.c [2018-10-23 23:12:44,329 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ae375d48e/d47f59c4ecd047f9877f7ffefc774808/FLAG34ff07f5d [2018-10-23 23:12:44,866 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 23:12:44,867 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label40_true-unreach-call_false-termination.c [2018-10-23 23:12:44,885 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ae375d48e/d47f59c4ecd047f9877f7ffefc774808/FLAG34ff07f5d [2018-10-23 23:12:44,913 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ae375d48e/d47f59c4ecd047f9877f7ffefc774808 [2018-10-23 23:12:44,924 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 23:12:44,927 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 23:12:44,930 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 23:12:44,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 23:12:44,939 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 23:12:44,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:12:44" (1/1) ... [2018-10-23 23:12:44,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d3e8be9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:12:44, skipping insertion in model container [2018-10-23 23:12:44,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:12:44" (1/1) ... [2018-10-23 23:12:44,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 23:12:45,032 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 23:12:45,486 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:12:45,494 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 23:12:45,632 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:12:45,653 INFO L193 MainTranslator]: Completed translation [2018-10-23 23:12:45,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:12:45 WrapperNode [2018-10-23 23:12:45,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 23:12:45,655 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 23:12:45,655 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 23:12:45,655 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 23:12:45,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:12:45" (1/1) ... [2018-10-23 23:12:45,687 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:12:45" (1/1) ... [2018-10-23 23:12:45,838 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 23:12:45,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 23:12:45,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 23:12:45,839 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 23:12:45,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:12:45" (1/1) ... [2018-10-23 23:12:45,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:12:45" (1/1) ... [2018-10-23 23:12:45,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:12:45" (1/1) ... [2018-10-23 23:12:45,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:12:45" (1/1) ... [2018-10-23 23:12:45,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:12:45" (1/1) ... [2018-10-23 23:12:45,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:12:45" (1/1) ... [2018-10-23 23:12:45,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:12:45" (1/1) ... [2018-10-23 23:12:45,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 23:12:45,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 23:12:45,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 23:12:45,939 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 23:12:45,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:12:45" (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 23:12:46,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 23:12:46,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 23:12:46,026 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 23:12:46,026 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 23:12:46,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 23:12:46,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 23:12:46,027 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 23:12:46,028 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 23:12:49,399 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 23:12:49,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:12:49 BoogieIcfgContainer [2018-10-23 23:12:49,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 23:12:49,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 23:12:49,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 23:12:49,405 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 23:12:49,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 11:12:44" (1/3) ... [2018-10-23 23:12:49,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47aff83f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:12:49, skipping insertion in model container [2018-10-23 23:12:49,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:12:45" (2/3) ... [2018-10-23 23:12:49,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47aff83f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:12:49, skipping insertion in model container [2018-10-23 23:12:49,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:12:49" (3/3) ... [2018-10-23 23:12:49,410 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label40_true-unreach-call_false-termination.c [2018-10-23 23:12:49,420 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 23:12:49,429 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 23:12:49,448 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 23:12:49,487 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 23:12:49,488 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 23:12:49,488 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 23:12:49,488 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 23:12:49,488 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 23:12:49,489 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 23:12:49,489 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 23:12:49,489 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 23:12:49,516 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-10-23 23:12:49,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-23 23:12:49,528 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:12:49,530 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] [2018-10-23 23:12:49,532 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:12:49,539 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:12:49,539 INFO L82 PathProgramCache]: Analyzing trace with hash 861402336, now seen corresponding path program 1 times [2018-10-23 23:12:49,542 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:12:49,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:12:49,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:12:49,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:12:49,602 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:12:49,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:12:50,224 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:12:50,364 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 23:12:50,367 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:12:50,368 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 23:12:50,368 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:12:50,375 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 23:12:50,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 23:12:50,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:12:50,398 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 3 states. [2018-10-23 23:12:51,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:12:51,772 INFO L93 Difference]: Finished difference Result 550 states and 941 transitions. [2018-10-23 23:12:51,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 23:12:51,775 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2018-10-23 23:12:51,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:12:51,794 INFO L225 Difference]: With dead ends: 550 [2018-10-23 23:12:51,794 INFO L226 Difference]: Without dead ends: 340 [2018-10-23 23:12:51,801 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 23:12:51,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-10-23 23:12:51,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-10-23 23:12:51,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-10-23 23:12:51,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 569 transitions. [2018-10-23 23:12:51,923 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 569 transitions. Word has length 94 [2018-10-23 23:12:51,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:12:51,924 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 569 transitions. [2018-10-23 23:12:51,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 23:12:51,924 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 569 transitions. [2018-10-23 23:12:51,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-23 23:12:51,930 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:12:51,931 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:12:51,931 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:12:51,932 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:12:51,932 INFO L82 PathProgramCache]: Analyzing trace with hash -461810857, now seen corresponding path program 1 times [2018-10-23 23:12:51,932 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:12:51,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:12:51,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:12:51,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:12:51,934 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:12:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:12:52,110 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:12:52,110 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:12:52,110 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 23:12:52,111 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:12:52,113 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 23:12:52,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 23:12:52,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:12:52,114 INFO L87 Difference]: Start difference. First operand 340 states and 569 transitions. Second operand 5 states. [2018-10-23 23:12:54,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:12:54,080 INFO L93 Difference]: Finished difference Result 1079 states and 1888 transitions. [2018-10-23 23:12:54,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 23:12:54,083 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2018-10-23 23:12:54,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:12:54,092 INFO L225 Difference]: With dead ends: 1079 [2018-10-23 23:12:54,093 INFO L226 Difference]: Without dead ends: 745 [2018-10-23 23:12:54,098 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 23:12:54,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2018-10-23 23:12:54,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 733. [2018-10-23 23:12:54,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2018-10-23 23:12:54,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1163 transitions. [2018-10-23 23:12:54,164 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1163 transitions. Word has length 104 [2018-10-23 23:12:54,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:12:54,165 INFO L481 AbstractCegarLoop]: Abstraction has 733 states and 1163 transitions. [2018-10-23 23:12:54,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 23:12:54,165 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1163 transitions. [2018-10-23 23:12:54,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-23 23:12:54,175 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:12:54,175 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:12:54,175 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:12:54,176 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:12:54,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1700574034, now seen corresponding path program 1 times [2018-10-23 23:12:54,176 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:12:54,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:12:54,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:12:54,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:12:54,178 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:12:54,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:12:54,559 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:12:54,560 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:12:54,560 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:12:54,561 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 131 with the following transitions: [2018-10-23 23:12:54,563 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [17], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [65], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [389], [391], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-23 23:12:54,666 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:12:54,666 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 23:13:32,700 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 23:13:32,701 INFO L272 AbstractInterpreter]: Visited 98 different actions 163 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-10-23 23:13:32,716 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:13:32,716 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 23:13:39,699 INFO L232 lantSequenceWeakener]: Weakened 20 states. On average, predicates are now at 81.88% of their original sizes. [2018-10-23 23:13:39,699 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 23:14:34,816 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 23:14:34,817 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 23:14:34,817 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [6] total 19 [2018-10-23 23:14:34,817 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:14:34,818 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-23 23:14:34,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-23 23:14:34,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2018-10-23 23:14:34,818 INFO L87 Difference]: Start difference. First operand 733 states and 1163 transitions. Second operand 15 states. Received shutdown request... [2018-10-23 23:17:04,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-23 23:17:04,337 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 23:17:04,343 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 23:17:04,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 11:17:04 BoogieIcfgContainer [2018-10-23 23:17:04,344 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 23:17:04,344 INFO L168 Benchmark]: Toolchain (without parser) took 259419.96 ms. Allocated memory was 1.5 GB in the beginning and 3.2 GB in the end (delta: 1.6 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -343.9 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-23 23:17:04,346 INFO L168 Benchmark]: CDTParser took 0.21 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 23:17:04,346 INFO L168 Benchmark]: CACSL2BoogieTranslator took 724.06 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-23 23:17:04,347 INFO L168 Benchmark]: Boogie Procedure Inliner took 183.72 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -826.9 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2018-10-23 23:17:04,348 INFO L168 Benchmark]: Boogie Preprocessor took 97.53 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 23:17:04,349 INFO L168 Benchmark]: RCFGBuilder took 3461.67 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: 105.0 MB). Peak memory consumption was 105.0 MB. Max. memory is 7.1 GB. [2018-10-23 23:17:04,350 INFO L168 Benchmark]: TraceAbstraction took 254942.05 ms. Allocated memory was 2.3 GB in the beginning and 3.2 GB in the end (delta: 892.3 MB). Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 346.3 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-23 23:17:04,355 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 724.06 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 183.72 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -826.9 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 97.53 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 3461.67 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: 105.0 MB). Peak memory consumption was 105.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 254942.05 ms. Allocated memory was 2.3 GB in the beginning and 3.2 GB in the end (delta: 892.3 MB). Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 346.3 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 437]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 437). Cancelled while BasicCegarLoop was constructing difference of abstraction (733states) and FLOYD_HOARE automaton (currently 21 states, 15 states before enhancement),while ReachableStatesComputation was computing reachable states (344 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 208 locations, 1 error locations. TIMEOUT Result, 254.8s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 152.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 229 SDtfs, 1312 SDslu, 163 SDs, 0 SdLazy, 1839 SolverSat, 432 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 60.5s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 152 GetRequests, 113 SyntacticMatches, 10 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 67.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=733occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 38.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9931393998325365 AbsIntWeakeningRatio, 0.2713178294573643 AbsIntAvgWeakeningVarsNumRemoved, 188.86821705426357 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 328 NumberOfCodeBlocks, 328 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 325 ConstructedInterpolants, 0 QuantifiedInterpolants, 79496 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 47/49 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown