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_label34_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 19:29:59,283 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 19:29:59,287 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 19:29:59,305 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 19:29:59,305 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 19:29:59,307 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 19:29:59,309 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 19:29:59,311 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 19:29:59,314 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 19:29:59,314 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 19:29:59,322 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 19:29:59,322 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 19:29:59,325 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 19:29:59,326 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 19:29:59,329 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 19:29:59,330 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 19:29:59,330 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 19:29:59,334 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 19:29:59,336 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 19:29:59,340 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 19:29:59,343 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 19:29:59,344 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 19:29:59,347 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 19:29:59,357 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 19:29:59,382 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 19:29:59,382 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 19:29:59,384 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 19:29:59,384 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 19:29:59,385 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 19:29:59,385 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 19:29:59,385 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 19:29:59,385 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 19:29:59,385 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 19:29:59,386 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 19:29:59,386 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 19:29:59,386 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 19:29:59,387 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 19:29:59,387 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 19:29:59,388 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 19:29:59,388 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 19:29:59,388 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 19:29:59,388 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 19:29:59,388 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 19:29:59,388 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 19:29:59,390 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 19:29:59,390 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 19:29:59,390 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 19:29:59,391 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 19:29:59,391 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:29:59,391 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 19:29:59,391 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 19:29:59,391 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 19:29:59,392 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 19:29:59,392 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 19:29:59,392 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 19:29:59,392 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 19:29:59,392 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 19:29:59,392 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 19:29:59,439 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 19:29:59,451 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 19:29:59,455 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 19:29:59,457 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 19:29:59,457 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 19:29:59,458 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label34_true-unreach-call_false-termination.c [2018-10-24 19:29:59,531 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6f72e0668/52b70aae4d7b4d94afbf274a1eb7986d/FLAG4485935a2 [2018-10-24 19:30:00,107 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 19:30:00,108 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label34_true-unreach-call_false-termination.c [2018-10-24 19:30:00,127 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6f72e0668/52b70aae4d7b4d94afbf274a1eb7986d/FLAG4485935a2 [2018-10-24 19:30:00,146 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6f72e0668/52b70aae4d7b4d94afbf274a1eb7986d [2018-10-24 19:30:00,157 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 19:30:00,158 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 19:30:00,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 19:30:00,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 19:30:00,163 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 19:30:00,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:30:00" (1/1) ... [2018-10-24 19:30:00,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a802b20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:30:00, skipping insertion in model container [2018-10-24 19:30:00,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:30:00" (1/1) ... [2018-10-24 19:30:00,178 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 19:30:00,236 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 19:30:00,676 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:30:00,681 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 19:30:00,806 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:30:00,824 INFO L193 MainTranslator]: Completed translation [2018-10-24 19:30:00,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:30:00 WrapperNode [2018-10-24 19:30:00,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 19:30:00,825 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 19:30:00,826 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 19:30:00,826 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 19:30:00,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:30:00" (1/1) ... [2018-10-24 19:30:00,868 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:30:00" (1/1) ... [2018-10-24 19:30:01,016 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 19:30:01,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 19:30:01,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 19:30:01,017 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 19:30:01,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:30:00" (1/1) ... [2018-10-24 19:30:01,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:30:00" (1/1) ... [2018-10-24 19:30:01,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:30:00" (1/1) ... [2018-10-24 19:30:01,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:30:00" (1/1) ... [2018-10-24 19:30:01,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:30:00" (1/1) ... [2018-10-24 19:30:01,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:30:00" (1/1) ... [2018-10-24 19:30:01,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:30:00" (1/1) ... [2018-10-24 19:30:01,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 19:30:01,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 19:30:01,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 19:30:01,100 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 19:30:01,101 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:30:00" (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 19:30:01,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 19:30:01,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 19:30:01,185 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 19:30:01,185 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 19:30:01,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 19:30:01,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 19:30:01,186 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 19:30:01,186 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 19:30:04,702 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 19:30:04,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:30:04 BoogieIcfgContainer [2018-10-24 19:30:04,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 19:30:04,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 19:30:04,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 19:30:04,708 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 19:30:04,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:30:00" (1/3) ... [2018-10-24 19:30:04,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5789496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:30:04, skipping insertion in model container [2018-10-24 19:30:04,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:30:00" (2/3) ... [2018-10-24 19:30:04,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5789496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:30:04, skipping insertion in model container [2018-10-24 19:30:04,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:30:04" (3/3) ... [2018-10-24 19:30:04,712 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label34_true-unreach-call_false-termination.c [2018-10-24 19:30:04,723 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 19:30:04,732 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 19:30:04,751 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 19:30:04,809 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 19:30:04,809 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 19:30:04,809 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 19:30:04,810 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 19:30:04,810 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 19:30:04,810 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 19:30:04,811 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 19:30:04,811 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 19:30:04,856 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-24 19:30:04,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-24 19:30:04,876 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:30:04,879 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, 1, 1, 1] [2018-10-24 19:30:04,884 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:30:04,891 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:30:04,891 INFO L82 PathProgramCache]: Analyzing trace with hash -2048669081, now seen corresponding path program 1 times [2018-10-24 19:30:04,894 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:30:04,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:30:04,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:30:04,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:30:04,950 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:30:05,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:30:05,526 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:30:05,684 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 19:30:05,687 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:30:05,687 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:30:05,688 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:30:05,694 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:30:05,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:30:05,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:30:05,716 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-10-24 19:30:07,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:30:07,189 INFO L93 Difference]: Finished difference Result 618 states and 1056 transitions. [2018-10-24 19:30:07,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:30:07,195 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2018-10-24 19:30:07,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:30:07,215 INFO L225 Difference]: With dead ends: 618 [2018-10-24 19:30:07,215 INFO L226 Difference]: Without dead ends: 379 [2018-10-24 19:30:07,222 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 19:30:07,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-10-24 19:30:07,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2018-10-24 19:30:07,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-10-24 19:30:07,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 621 transitions. [2018-10-24 19:30:07,305 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 621 transitions. Word has length 105 [2018-10-24 19:30:07,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:30:07,307 INFO L481 AbstractCegarLoop]: Abstraction has 379 states and 621 transitions. [2018-10-24 19:30:07,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:30:07,307 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 621 transitions. [2018-10-24 19:30:07,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-24 19:30:07,315 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:30:07,315 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:30:07,316 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:30:07,316 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:30:07,316 INFO L82 PathProgramCache]: Analyzing trace with hash -926147150, now seen corresponding path program 1 times [2018-10-24 19:30:07,316 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:30:07,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:30:07,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:30:07,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:30:07,318 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:30:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:30:07,532 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:30:07,533 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:30:07,533 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:30:07,533 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:30:07,536 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:30:07,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:30:07,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:30:07,537 INFO L87 Difference]: Start difference. First operand 379 states and 621 transitions. Second operand 6 states. [2018-10-24 19:30:09,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:30:09,697 INFO L93 Difference]: Finished difference Result 1231 states and 2094 transitions. [2018-10-24 19:30:09,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 19:30:09,702 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2018-10-24 19:30:09,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:30:09,712 INFO L225 Difference]: With dead ends: 1231 [2018-10-24 19:30:09,713 INFO L226 Difference]: Without dead ends: 858 [2018-10-24 19:30:09,721 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:30:09,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2018-10-24 19:30:09,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 821. [2018-10-24 19:30:09,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2018-10-24 19:30:09,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1290 transitions. [2018-10-24 19:30:09,795 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1290 transitions. Word has length 121 [2018-10-24 19:30:09,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:30:09,796 INFO L481 AbstractCegarLoop]: Abstraction has 821 states and 1290 transitions. [2018-10-24 19:30:09,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:30:09,796 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1290 transitions. [2018-10-24 19:30:09,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-24 19:30:09,804 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:30:09,805 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:30:09,805 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:30:09,805 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:30:09,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1688257955, now seen corresponding path program 1 times [2018-10-24 19:30:09,806 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:30:09,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:30:09,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:30:09,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:30:09,807 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:30:09,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:30:10,037 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:30:10,038 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:30:10,038 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:30:10,038 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:30:10,039 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:30:10,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:30:10,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:30:10,040 INFO L87 Difference]: Start difference. First operand 821 states and 1290 transitions. Second operand 6 states. [2018-10-24 19:30:13,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:30:13,607 INFO L93 Difference]: Finished difference Result 2553 states and 4218 transitions. [2018-10-24 19:30:13,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:30:13,615 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2018-10-24 19:30:13,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:30:13,636 INFO L225 Difference]: With dead ends: 2553 [2018-10-24 19:30:13,637 INFO L226 Difference]: Without dead ends: 1738 [2018-10-24 19:30:13,646 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:30:13,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2018-10-24 19:30:13,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1680. [2018-10-24 19:30:13,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1680 states. [2018-10-24 19:30:13,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 2538 transitions. [2018-10-24 19:30:13,740 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 2538 transitions. Word has length 128 [2018-10-24 19:30:13,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:30:13,740 INFO L481 AbstractCegarLoop]: Abstraction has 1680 states and 2538 transitions. [2018-10-24 19:30:13,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:30:13,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 2538 transitions. [2018-10-24 19:30:13,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-24 19:30:13,746 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:30:13,747 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2018-10-24 19:30:13,747 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:30:13,747 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:30:13,748 INFO L82 PathProgramCache]: Analyzing trace with hash -690130107, now seen corresponding path program 1 times [2018-10-24 19:30:13,748 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:30:13,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:30:13,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:30:13,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:30:13,749 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:30:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:30:14,006 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:30:14,328 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 19:30:14,328 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:30:14,328 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:30:14,330 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 131 with the following transitions: [2018-10-24 19:30:14,332 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [10], [14], [18], [22], [26], [30], [33], [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], [491], [499], [507], [511], [513], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-24 19:30:14,413 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:30:14,413 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:30:26,337 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:30:26,339 INFO L272 AbstractInterpreter]: Visited 106 different actions 106 times. Never merged. Never widened. Never found a fixpoint. Largest state had 38 variables. [2018-10-24 19:30:26,350 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:30:26,350 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:30:30,872 INFO L232 lantSequenceWeakener]: Weakened 109 states. On average, predicates are now at 81.18% of their original sizes. [2018-10-24 19:30:30,872 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:30:34,539 INFO L413 sIntCurrentIteration]: We have 129 unified AI predicates [2018-10-24 19:30:34,539 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:30:34,540 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:30:34,541 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [6] total 18 [2018-10-24 19:30:34,541 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:30:34,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-24 19:30:34,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-24 19:30:34,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2018-10-24 19:30:34,543 INFO L87 Difference]: Start difference. First operand 1680 states and 2538 transitions. Second operand 14 states. [2018-10-24 19:32:19,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:32:19,104 INFO L93 Difference]: Finished difference Result 3652 states and 5496 transitions. [2018-10-24 19:32:19,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-24 19:32:19,104 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 130 [2018-10-24 19:32:19,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:32:19,119 INFO L225 Difference]: With dead ends: 3652 [2018-10-24 19:32:19,120 INFO L226 Difference]: Without dead ends: 1978 [2018-10-24 19:32:19,125 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 142 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=193, Invalid=509, Unknown=0, NotChecked=0, Total=702 [2018-10-24 19:32:19,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2018-10-24 19:32:19,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 1825. [2018-10-24 19:32:19,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1825 states. [2018-10-24 19:32:19,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1825 states to 1825 states and 2690 transitions. [2018-10-24 19:32:19,257 INFO L78 Accepts]: Start accepts. Automaton has 1825 states and 2690 transitions. Word has length 130 [2018-10-24 19:32:19,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:32:19,258 INFO L481 AbstractCegarLoop]: Abstraction has 1825 states and 2690 transitions. [2018-10-24 19:32:19,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-24 19:32:19,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1825 states and 2690 transitions. [2018-10-24 19:32:19,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-24 19:32:19,263 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:32:19,264 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 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 19:32:19,264 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:32:19,264 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:32:19,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1874144486, now seen corresponding path program 1 times [2018-10-24 19:32:19,265 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:32:19,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:32:19,266 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:32:19,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:32:19,266 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:32:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:32:19,479 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 32 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 19:32:19,479 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:32:19,480 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:32:19,480 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 141 with the following transitions: [2018-10-24 19:32:19,480 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [9], [10], [14], [18], [22], [26], [30], [33], [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], [491], [499], [507], [511], [513], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-24 19:32:19,486 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:32:19,486 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:33:09,466 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:33:09,466 INFO L272 AbstractInterpreter]: Visited 110 different actions 428 times. Merged at 7 different actions 21 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 38 variables. [2018-10-24 19:33:09,505 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:33:09,506 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:33:12,710 INFO L232 lantSequenceWeakener]: Weakened 23 states. On average, predicates are now at 83.33% of their original sizes. [2018-10-24 19:33:12,710 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:33:38,430 INFO L413 sIntCurrentIteration]: We have 139 unified AI predicates [2018-10-24 19:33:38,430 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:33:38,430 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:33:38,431 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [9] total 28 [2018-10-24 19:33:38,431 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:33:38,431 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-24 19:33:38,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-24 19:33:38,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2018-10-24 19:33:38,432 INFO L87 Difference]: Start difference. First operand 1825 states and 2690 transitions. Second operand 21 states. Received shutdown request... [2018-10-24 19:33:59,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 19:33:59,612 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:33:59,617 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:33:59,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:33:59 BoogieIcfgContainer [2018-10-24 19:33:59,617 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:33:59,618 INFO L168 Benchmark]: Toolchain (without parser) took 239461.27 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 194.5 MB. Max. memory is 7.1 GB. [2018-10-24 19:33:59,620 INFO L168 Benchmark]: CDTParser took 0.19 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 19:33:59,620 INFO L168 Benchmark]: CACSL2BoogieTranslator took 665.65 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-24 19:33:59,621 INFO L168 Benchmark]: Boogie Procedure Inliner took 190.58 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 726.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -805.9 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2018-10-24 19:33:59,622 INFO L168 Benchmark]: Boogie Preprocessor took 80.24 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2018-10-24 19:33:59,623 INFO L168 Benchmark]: RCFGBuilder took 3603.43 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: 104.7 MB). Peak memory consumption was 104.7 MB. Max. memory is 7.1 GB. [2018-10-24 19:33:59,624 INFO L168 Benchmark]: TraceAbstraction took 234913.24 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.7 GB). Free memory was 2.1 GB in the beginning and 3.6 GB in the end (delta: -1.5 GB). Peak memory consumption was 123.9 MB. Max. memory is 7.1 GB. [2018-10-24 19:33:59,629 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 665.65 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 190.58 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 726.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -805.9 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 80.24 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3603.43 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: 104.7 MB). Peak memory consumption was 104.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 234913.24 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.7 GB). Free memory was 2.1 GB in the beginning and 3.6 GB in the end (delta: -1.5 GB). Peak memory consumption was 123.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 466]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 466). Cancelled while BasicCegarLoop was constructing difference of abstraction (1825states) and FLOYD_HOARE automaton (currently 12 states, 21 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 29 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 234.8s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 133.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 659 SDtfs, 2865 SDslu, 616 SDs, 0 SdLazy, 3023 SolverSat, 702 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 61.6s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 315 GetRequests, 242 SyntacticMatches, 5 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 39.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1825occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 62.0s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9928902783380394 AbsIntWeakeningRatio, 0.26865671641791045 AbsIntAvgWeakeningVarsNumRemoved, 1293.5858208955224 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 248 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 624 NumberOfCodeBlocks, 624 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 619 ConstructedInterpolants, 0 QuantifiedInterpolants, 167236 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 96/115 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown