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/Problem14_label31_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:31:56,001 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:31:56,007 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:31:56,029 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:31:56,029 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:31:56,030 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:31:56,031 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:31:56,035 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:31:56,037 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:31:56,038 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:31:56,041 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:31:56,042 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:31:56,043 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:31:56,044 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:31:56,048 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:31:56,050 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:31:56,051 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:31:56,058 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:31:56,063 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:31:56,065 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:31:56,066 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:31:56,067 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:31:56,075 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 18:31:56,084 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 18:31:56,099 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:31:56,099 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:31:56,100 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:31:56,101 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:31:56,101 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:31:56,101 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:31:56,101 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:31:56,101 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:31:56,102 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:31:56,102 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:31:56,102 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:31:56,102 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:31:56,103 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:31:56,103 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:31:56,104 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:31:56,104 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:31:56,104 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:31:56,104 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:31:56,104 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:31:56,105 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:31:56,105 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:31:56,105 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:31:56,105 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:31:56,106 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:31:56,106 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:31:56,106 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:31:56,107 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:31:56,108 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:31:56,108 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:31:56,108 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:31:56,108 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:31:56,109 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:31:56,109 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:31:56,109 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:31:56,183 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:31:56,199 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:31:56,205 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:31:56,206 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:31:56,207 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:31:56,208 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label31_false-unreach-call_false-termination.c [2018-10-24 18:31:56,273 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/babc74f27/20e0131b4cef4666855db6d9d610368a/FLAG51325fe76 [2018-10-24 18:31:56,863 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:31:56,864 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label31_false-unreach-call_false-termination.c [2018-10-24 18:31:56,879 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/babc74f27/20e0131b4cef4666855db6d9d610368a/FLAG51325fe76 [2018-10-24 18:31:56,903 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/babc74f27/20e0131b4cef4666855db6d9d610368a [2018-10-24 18:31:56,920 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:31:56,923 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:31:56,924 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:31:56,924 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:31:56,931 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:31:56,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:31:56" (1/1) ... [2018-10-24 18:31:56,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b394b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:31:56, skipping insertion in model container [2018-10-24 18:31:56,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:31:56" (1/1) ... [2018-10-24 18:31:56,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:31:57,020 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:31:57,542 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:31:57,547 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:31:57,692 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:31:57,714 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:31:57,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:31:57 WrapperNode [2018-10-24 18:31:57,715 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:31:57,716 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:31:57,717 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:31:57,717 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:31:57,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:31:57" (1/1) ... [2018-10-24 18:31:57,758 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:31:57" (1/1) ... [2018-10-24 18:31:57,958 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:31:57,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:31:57,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:31:57,959 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:31:57,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:31:57" (1/1) ... [2018-10-24 18:31:57,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:31:57" (1/1) ... [2018-10-24 18:31:57,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:31:57" (1/1) ... [2018-10-24 18:31:57,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:31:57" (1/1) ... [2018-10-24 18:31:58,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:31:57" (1/1) ... [2018-10-24 18:31:58,057 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:31:57" (1/1) ... [2018-10-24 18:31:58,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:31:57" (1/1) ... [2018-10-24 18:31:58,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:31:58,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:31:58,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:31:58,093 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:31:58,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:31:57" (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 18:31:58,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:31:58,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:31:58,167 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:31:58,168 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:31:58,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:31:58,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:31:58,168 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:31:58,168 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:32:02,416 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:32:02,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:32:02 BoogieIcfgContainer [2018-10-24 18:32:02,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:32:02,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:32:02,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:32:02,426 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:32:02,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:31:56" (1/3) ... [2018-10-24 18:32:02,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@229d8141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:32:02, skipping insertion in model container [2018-10-24 18:32:02,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:31:57" (2/3) ... [2018-10-24 18:32:02,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@229d8141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:32:02, skipping insertion in model container [2018-10-24 18:32:02,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:32:02" (3/3) ... [2018-10-24 18:32:02,432 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label31_false-unreach-call_false-termination.c [2018-10-24 18:32:02,442 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:32:02,452 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:32:02,467 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:32:02,510 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:32:02,511 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:32:02,511 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:32:02,511 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:32:02,511 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:32:02,511 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:32:02,511 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:32:02,512 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:32:02,539 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-24 18:32:02,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-24 18:32:02,546 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:32:02,547 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] [2018-10-24 18:32:02,550 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:32:02,557 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:32:02,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1186927676, now seen corresponding path program 1 times [2018-10-24 18:32:02,560 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:32:02,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:32:02,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:32:02,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:32:02,607 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:32:02,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:32:02,996 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 18:32:02,999 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:32:02,999 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:32:03,000 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:32:03,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:32:03,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:32:03,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:32:03,033 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-24 18:32:05,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:32:05,168 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-24 18:32:05,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:32:05,171 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2018-10-24 18:32:05,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:32:05,192 INFO L225 Difference]: With dead ends: 691 [2018-10-24 18:32:05,192 INFO L226 Difference]: Without dead ends: 434 [2018-10-24 18:32:05,201 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:32:05,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-24 18:32:05,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-24 18:32:05,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-24 18:32:05,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 767 transitions. [2018-10-24 18:32:05,309 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 767 transitions. Word has length 30 [2018-10-24 18:32:05,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:32:05,310 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 767 transitions. [2018-10-24 18:32:05,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:32:05,310 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 767 transitions. [2018-10-24 18:32:05,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-24 18:32:05,320 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:32:05,321 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2018-10-24 18:32:05,322 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:32:05,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:32:05,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1887120035, now seen corresponding path program 1 times [2018-10-24 18:32:05,322 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:32:05,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:32:05,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:32:05,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:32:05,327 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:32:05,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:32:05,772 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:32:05,772 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:32:05,772 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 18:32:05,773 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:32:05,775 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 18:32:05,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 18:32:05,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 18:32:05,776 INFO L87 Difference]: Start difference. First operand 434 states and 767 transitions. Second operand 5 states. [2018-10-24 18:32:11,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:32:11,602 INFO L93 Difference]: Finished difference Result 1416 states and 2580 transitions. [2018-10-24 18:32:11,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 18:32:11,604 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2018-10-24 18:32:11,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:32:11,617 INFO L225 Difference]: With dead ends: 1416 [2018-10-24 18:32:11,617 INFO L226 Difference]: Without dead ends: 988 [2018-10-24 18:32:11,625 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:32:11,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2018-10-24 18:32:11,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 973. [2018-10-24 18:32:11,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2018-10-24 18:32:11,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1540 transitions. [2018-10-24 18:32:11,698 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1540 transitions. Word has length 107 [2018-10-24 18:32:11,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:32:11,699 INFO L481 AbstractCegarLoop]: Abstraction has 973 states and 1540 transitions. [2018-10-24 18:32:11,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 18:32:11,700 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1540 transitions. [2018-10-24 18:32:11,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-10-24 18:32:11,708 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:32:11,709 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:32:11,709 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:32:11,710 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:32:11,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1620618787, now seen corresponding path program 1 times [2018-10-24 18:32:11,710 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:32:11,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:32:11,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:32:11,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:32:11,712 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:32:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:32:12,074 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:32:12,139 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:32:12,140 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:32:12,140 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:32:12,140 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:32:12,141 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:32:12,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:32:12,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:32:12,142 INFO L87 Difference]: Start difference. First operand 973 states and 1540 transitions. Second operand 6 states. [2018-10-24 18:32:15,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:32:15,206 INFO L93 Difference]: Finished difference Result 2353 states and 3939 transitions. [2018-10-24 18:32:15,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:32:15,206 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2018-10-24 18:32:15,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:32:15,221 INFO L225 Difference]: With dead ends: 2353 [2018-10-24 18:32:15,222 INFO L226 Difference]: Without dead ends: 1386 [2018-10-24 18:32:15,228 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 18:32:15,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2018-10-24 18:32:15,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1352. [2018-10-24 18:32:15,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2018-10-24 18:32:15,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 2126 transitions. [2018-10-24 18:32:15,300 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 2126 transitions. Word has length 171 [2018-10-24 18:32:15,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:32:15,301 INFO L481 AbstractCegarLoop]: Abstraction has 1352 states and 2126 transitions. [2018-10-24 18:32:15,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:32:15,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 2126 transitions. [2018-10-24 18:32:15,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-10-24 18:32:15,308 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:32:15,309 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 18:32:15,309 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:32:15,309 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:32:15,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1467266075, now seen corresponding path program 1 times [2018-10-24 18:32:15,309 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:32:15,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:32:15,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:32:15,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:32:15,312 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:32:15,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:32:15,623 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:32:15,624 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:32:15,624 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:32:15,625 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 192 with the following transitions: [2018-10-24 18:32:15,628 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [550], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 18:32:15,691 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:32:15,691 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:32:17,573 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:32:17,577 INFO L272 AbstractInterpreter]: Visited 89 different actions 89 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 18:32:17,592 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:32:17,592 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:32:19,291 INFO L232 lantSequenceWeakener]: Weakened 183 states. On average, predicates are now at 77.68% of their original sizes. [2018-10-24 18:32:19,292 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:32:19,695 INFO L413 sIntCurrentIteration]: We have 190 unified AI predicates [2018-10-24 18:32:19,695 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:32:19,696 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:32:19,697 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 18:32:19,697 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:32:19,697 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 18:32:19,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 18:32:19,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 18:32:19,699 INFO L87 Difference]: Start difference. First operand 1352 states and 2126 transitions. Second operand 7 states. [2018-10-24 18:32:22,006 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:32:52,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:32:52,130 INFO L93 Difference]: Finished difference Result 2883 states and 4473 transitions. [2018-10-24 18:32:52,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:32:52,131 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 191 [2018-10-24 18:32:52,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:32:52,139 INFO L225 Difference]: With dead ends: 2883 [2018-10-24 18:32:52,139 INFO L226 Difference]: Without dead ends: 1537 [2018-10-24 18:32:52,145 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 191 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:32:52,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1537 states. [2018-10-24 18:32:52,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1537 to 1535. [2018-10-24 18:32:52,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1535 states. [2018-10-24 18:32:52,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 2316 transitions. [2018-10-24 18:32:52,187 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 2316 transitions. Word has length 191 [2018-10-24 18:32:52,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:32:52,188 INFO L481 AbstractCegarLoop]: Abstraction has 1535 states and 2316 transitions. [2018-10-24 18:32:52,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 18:32:52,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 2316 transitions. [2018-10-24 18:32:52,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-10-24 18:32:52,193 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:32:52,194 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:32:52,194 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:32:52,194 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:32:52,194 INFO L82 PathProgramCache]: Analyzing trace with hash -368059732, now seen corresponding path program 1 times [2018-10-24 18:32:52,195 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:32:52,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:32:52,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:32:52,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:32:52,196 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:32:52,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:32:52,838 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 156 proven. 146 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:32:52,838 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:32:52,838 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:32:52,839 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 277 with the following transitions: [2018-10-24 18:32:52,839 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [550], [551], [554], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 18:32:52,844 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:32:52,845 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:32:55,581 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:32:55,581 INFO L272 AbstractInterpreter]: Visited 94 different actions 181 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:32:55,598 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:32:55,598 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:32:58,027 INFO L232 lantSequenceWeakener]: Weakened 102 states. On average, predicates are now at 78.41% of their original sizes. [2018-10-24 18:32:58,027 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:33:21,940 INFO L413 sIntCurrentIteration]: We have 275 unified AI predicates [2018-10-24 18:33:21,941 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:33:21,941 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:33:21,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [12] total 34 [2018-10-24 18:33:21,941 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:33:21,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-24 18:33:21,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-24 18:33:21,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2018-10-24 18:33:21,943 INFO L87 Difference]: Start difference. First operand 1535 states and 2316 transitions. Second operand 24 states. [2018-10-24 18:34:42,622 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:35:40,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:35:40,795 INFO L93 Difference]: Finished difference Result 3444 states and 5135 transitions. [2018-10-24 18:35:40,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-24 18:35:40,795 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 276 [2018-10-24 18:35:40,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:35:40,805 INFO L225 Difference]: With dead ends: 3444 [2018-10-24 18:35:40,806 INFO L226 Difference]: Without dead ends: 2098 [2018-10-24 18:35:40,812 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 289 GetRequests, 233 SyntacticMatches, 20 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 28.4s TimeCoverageRelationStatistics Valid=248, Invalid=1158, Unknown=0, NotChecked=0, Total=1406 [2018-10-24 18:35:40,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2098 states. [2018-10-24 18:35:40,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2098 to 2094. [2018-10-24 18:35:40,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2094 states. [2018-10-24 18:35:40,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 2908 transitions. [2018-10-24 18:35:40,982 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 2908 transitions. Word has length 276 [2018-10-24 18:35:40,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:35:40,983 INFO L481 AbstractCegarLoop]: Abstraction has 2094 states and 2908 transitions. [2018-10-24 18:35:40,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-24 18:35:40,983 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 2908 transitions. [2018-10-24 18:35:40,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-10-24 18:35:40,990 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:35:40,990 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 18:35:40,991 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:35:40,991 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:35:40,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1061017280, now seen corresponding path program 1 times [2018-10-24 18:35:40,991 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:35:40,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:35:40,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:35:40,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:35:40,993 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:35:41,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:35:41,270 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-24 18:35:41,472 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-10-24 18:35:41,649 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 128 proven. 125 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-10-24 18:35:41,650 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:35:41,650 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:35:41,650 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 303 with the following transitions: [2018-10-24 18:35:41,651 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 18:35:41,656 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:35:41,656 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:35:46,920 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:35:46,920 INFO L272 AbstractInterpreter]: Visited 120 different actions 234 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:35:46,927 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:35:46,927 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:35:49,247 INFO L232 lantSequenceWeakener]: Weakened 170 states. On average, predicates are now at 77.87% of their original sizes. [2018-10-24 18:35:49,247 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-24 18:35:55,960 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:35:55,965 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:35:55,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:35:55 BoogieIcfgContainer [2018-10-24 18:35:55,966 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:35:55,966 INFO L168 Benchmark]: Toolchain (without parser) took 239045.03 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-24 18:35:55,968 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 18:35:55,968 INFO L168 Benchmark]: CACSL2BoogieTranslator took 791.68 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-24 18:35:55,969 INFO L168 Benchmark]: Boogie Procedure Inliner took 241.62 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 720.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -818.8 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-24 18:35:55,970 INFO L168 Benchmark]: Boogie Preprocessor took 133.94 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-10-24 18:35:55,971 INFO L168 Benchmark]: RCFGBuilder took 4324.49 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 134.9 MB). Peak memory consumption was 134.9 MB. Max. memory is 7.1 GB. [2018-10-24 18:35:55,972 INFO L168 Benchmark]: TraceAbstraction took 233547.60 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.9 GB in the end (delta: -922.2 MB). Peak memory consumption was 957.4 MB. Max. memory is 7.1 GB. [2018-10-24 18:35:55,977 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 791.68 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 241.62 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 720.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -818.8 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.94 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4324.49 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 134.9 MB). Peak memory consumption was 134.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 233547.60 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.9 GB in the end (delta: -922.2 MB). Peak memory consumption was 957.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 73). Cancelled while BasicCegarLoop was analyzing trace of length 303 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 9 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 233.4s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 182.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 753 SDtfs, 4528 SDslu, 688 SDs, 0 SdLazy, 6875 SolverSat, 1142 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 71.9s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 504 GetRequests, 425 SyntacticMatches, 23 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 29.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2094occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.0s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9949365232527337 AbsIntWeakeningRatio, 0.1174934725848564 AbsIntAvgWeakeningVarsNumRemoved, 388.07702349869453 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 55 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 775 NumberOfCodeBlocks, 775 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 770 ConstructedInterpolants, 0 QuantifiedInterpolants, 1308897 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 328/476 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown