java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-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_label44_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:20:39,604 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:20:39,607 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:20:39,618 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:20:39,619 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:20:39,620 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:20:39,621 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:20:39,623 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:20:39,625 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:20:39,626 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:20:39,626 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:20:39,627 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:20:39,628 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:20:39,629 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:20:39,630 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:20:39,631 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:20:39,632 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:20:39,634 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:20:39,636 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:20:39,638 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:20:39,639 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:20:39,640 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:20:39,643 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 00:20:39,652 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 00:20:39,680 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:20:39,683 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:20:39,687 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:20:39,687 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:20:39,688 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:20:39,688 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:20:39,688 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:20:39,688 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:20:39,688 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:20:39,689 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:20:39,689 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:20:39,689 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:20:39,690 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:20:39,690 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:20:39,690 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:20:39,692 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:20:39,692 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:20:39,692 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:20:39,692 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:20:39,693 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:20:39,693 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:20:39,693 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:20:39,693 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:20:39,693 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:20:39,693 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:20:39,695 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:20:39,695 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:20:39,695 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:20:39,695 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:20:39,696 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:20:39,696 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:20:39,696 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:20:39,696 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:20:39,696 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:20:39,765 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:20:39,780 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:20:39,783 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:20:39,784 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:20:39,785 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:20:39,785 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label44_false-unreach-call_false-termination.c [2018-11-07 00:20:39,846 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b489006ee/d9d7ecbc257948edab2ddc11cbc4631a/FLAG5bd1d6cf4 [2018-11-07 00:20:40,379 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:20:40,380 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label44_false-unreach-call_false-termination.c [2018-11-07 00:20:40,393 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b489006ee/d9d7ecbc257948edab2ddc11cbc4631a/FLAG5bd1d6cf4 [2018-11-07 00:20:40,408 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b489006ee/d9d7ecbc257948edab2ddc11cbc4631a [2018-11-07 00:20:40,420 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:20:40,422 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:20:40,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:20:40,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:20:40,428 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:20:40,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:20:40" (1/1) ... [2018-11-07 00:20:40,432 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41c639f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:40, skipping insertion in model container [2018-11-07 00:20:40,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:20:40" (1/1) ... [2018-11-07 00:20:40,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:20:40,500 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:20:41,049 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:20:41,053 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:20:41,208 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:20:41,226 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:20:41,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:41 WrapperNode [2018-11-07 00:20:41,226 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:20:41,227 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:20:41,227 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:20:41,228 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:20:41,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:41" (1/1) ... [2018-11-07 00:20:41,367 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:41" (1/1) ... [2018-11-07 00:20:41,380 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:20:41,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:20:41,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:20:41,381 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:20:41,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:41" (1/1) ... [2018-11-07 00:20:41,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:41" (1/1) ... [2018-11-07 00:20:41,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:41" (1/1) ... [2018-11-07 00:20:41,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:41" (1/1) ... [2018-11-07 00:20:41,445 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:41" (1/1) ... [2018-11-07 00:20:41,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:41" (1/1) ... [2018-11-07 00:20:41,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:41" (1/1) ... [2018-11-07 00:20:41,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:20:41,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:20:41,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:20:41,482 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:20:41,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 00:20:41,551 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:20:41,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:20:41,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:20:41,551 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:20:41,551 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:20:41,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:20:41,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:20:41,552 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:20:41,552 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:20:44,891 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:20:44,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:20:44 BoogieIcfgContainer [2018-11-07 00:20:44,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:20:44,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:20:44,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:20:44,897 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:20:44,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:20:40" (1/3) ... [2018-11-07 00:20:44,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39dc4cae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:20:44, skipping insertion in model container [2018-11-07 00:20:44,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:41" (2/3) ... [2018-11-07 00:20:44,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39dc4cae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:20:44, skipping insertion in model container [2018-11-07 00:20:44,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:20:44" (3/3) ... [2018-11-07 00:20:44,901 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label44_false-unreach-call_false-termination.c [2018-11-07 00:20:44,911 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:20:44,919 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:20:44,934 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:20:44,974 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:20:44,974 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:20:44,974 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:20:44,974 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:20:44,975 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:20:44,976 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:20:44,976 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:20:44,976 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:20:45,006 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 00:20:45,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-07 00:20:45,013 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:20:45,014 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:20:45,017 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:20:45,022 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:20:45,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1864594988, now seen corresponding path program 1 times [2018-11-07 00:20:45,025 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:20:45,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:20:45,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:20:45,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:20:45,073 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:20:45,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:20:45,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:20:45,364 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:20:45,364 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 00:20:45,364 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:20:45,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 00:20:45,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 00:20:45,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:20:45,384 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-11-07 00:20:48,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:20:48,830 INFO L93 Difference]: Finished difference Result 894 states and 1610 transitions. [2018-11-07 00:20:48,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 00:20:48,837 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-11-07 00:20:48,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:20:48,858 INFO L225 Difference]: With dead ends: 894 [2018-11-07 00:20:48,858 INFO L226 Difference]: Without dead ends: 633 [2018-11-07 00:20:48,868 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:20:48,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-11-07 00:20:48,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 434. [2018-11-07 00:20:48,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-11-07 00:20:48,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 662 transitions. [2018-11-07 00:20:48,953 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 662 transitions. Word has length 18 [2018-11-07 00:20:48,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:20:48,954 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 662 transitions. [2018-11-07 00:20:48,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 00:20:48,955 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 662 transitions. [2018-11-07 00:20:48,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-11-07 00:20:48,963 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:20:48,964 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:20:48,964 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:20:48,964 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:20:48,965 INFO L82 PathProgramCache]: Analyzing trace with hash 2115592732, now seen corresponding path program 1 times [2018-11-07 00:20:48,965 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:20:48,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:20:48,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:20:48,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:20:48,967 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:20:49,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:20:49,282 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:20:49,282 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:20:49,283 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 00:20:49,283 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:20:49,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 00:20:49,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 00:20:49,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:20:49,286 INFO L87 Difference]: Start difference. First operand 434 states and 662 transitions. Second operand 4 states. [2018-11-07 00:20:52,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:20:52,353 INFO L93 Difference]: Finished difference Result 1594 states and 2534 transitions. [2018-11-07 00:20:52,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 00:20:52,363 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2018-11-07 00:20:52,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:20:52,370 INFO L225 Difference]: With dead ends: 1594 [2018-11-07 00:20:52,371 INFO L226 Difference]: Without dead ends: 780 [2018-11-07 00:20:52,379 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:20:52,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2018-11-07 00:20:52,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 780. [2018-11-07 00:20:52,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 780 states. [2018-11-07 00:20:52,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1153 transitions. [2018-11-07 00:20:52,465 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1153 transitions. Word has length 102 [2018-11-07 00:20:52,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:20:52,465 INFO L480 AbstractCegarLoop]: Abstraction has 780 states and 1153 transitions. [2018-11-07 00:20:52,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 00:20:52,466 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1153 transitions. [2018-11-07 00:20:52,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-11-07 00:20:52,469 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:20:52,469 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:20:52,470 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:20:52,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:20:52,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1798704196, now seen corresponding path program 1 times [2018-11-07 00:20:52,470 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:20:52,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:20:52,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:20:52,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:20:52,472 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:20:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:20:52,998 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:20:52,999 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:20:52,999 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-07 00:20:52,999 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:20:53,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 00:20:53,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 00:20:53,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-07 00:20:53,001 INFO L87 Difference]: Start difference. First operand 780 states and 1153 transitions. Second operand 7 states. [2018-11-07 00:20:57,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:20:57,221 INFO L93 Difference]: Finished difference Result 2309 states and 3537 transitions. [2018-11-07 00:20:57,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 00:20:57,222 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2018-11-07 00:20:57,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:20:57,237 INFO L225 Difference]: With dead ends: 2309 [2018-11-07 00:20:57,237 INFO L226 Difference]: Without dead ends: 1535 [2018-11-07 00:20:57,244 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2018-11-07 00:20:57,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2018-11-07 00:20:57,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 1471. [2018-11-07 00:20:57,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1471 states. [2018-11-07 00:20:57,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1471 states to 1471 states and 2125 transitions. [2018-11-07 00:20:57,312 INFO L78 Accepts]: Start accepts. Automaton has 1471 states and 2125 transitions. Word has length 114 [2018-11-07 00:20:57,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:20:57,313 INFO L480 AbstractCegarLoop]: Abstraction has 1471 states and 2125 transitions. [2018-11-07 00:20:57,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 00:20:57,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1471 states and 2125 transitions. [2018-11-07 00:20:57,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-11-07 00:20:57,324 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:20:57,324 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-11-07 00:20:57,325 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:20:57,325 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:20:57,325 INFO L82 PathProgramCache]: Analyzing trace with hash 47001231, now seen corresponding path program 1 times [2018-11-07 00:20:57,325 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:20:57,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:20:57,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:20:57,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:20:57,332 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:20:57,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:20:57,609 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:20:57,731 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 22 proven. 66 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 00:20:57,732 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:20:57,732 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:20:57,733 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 186 with the following transitions: [2018-11-07 00:20:57,735 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [45], [47], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [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], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 00:20:57,812 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:20:57,812 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:20:59,761 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:20:59,763 INFO L272 AbstractInterpreter]: Visited 101 different actions 101 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 00:20:59,773 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:20:59,773 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:21:01,406 INFO L227 lantSequenceWeakener]: Weakened 177 states. On average, predicates are now at 77.38% of their original sizes. [2018-11-07 00:21:01,406 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:21:01,768 INFO L415 sIntCurrentIteration]: We unified 184 AI predicates to 184 [2018-11-07 00:21:01,768 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:21:01,769 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:21:01,769 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-11-07 00:21:01,769 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:21:01,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 00:21:01,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 00:21:01,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 00:21:01,771 INFO L87 Difference]: Start difference. First operand 1471 states and 2125 transitions. Second operand 7 states. [2018-11-07 00:21:04,891 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:21:33,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:21:33,058 INFO L93 Difference]: Finished difference Result 3121 states and 4465 transitions. [2018-11-07 00:21:33,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:21:33,059 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 185 [2018-11-07 00:21:33,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:21:33,068 INFO L225 Difference]: With dead ends: 3121 [2018-11-07 00:21:33,068 INFO L226 Difference]: Without dead ends: 1656 [2018-11-07 00:21:33,075 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 185 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:21:33,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2018-11-07 00:21:33,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1654. [2018-11-07 00:21:33,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1654 states. [2018-11-07 00:21:33,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1654 states to 1654 states and 2316 transitions. [2018-11-07 00:21:33,128 INFO L78 Accepts]: Start accepts. Automaton has 1654 states and 2316 transitions. Word has length 185 [2018-11-07 00:21:33,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:21:33,128 INFO L480 AbstractCegarLoop]: Abstraction has 1654 states and 2316 transitions. [2018-11-07 00:21:33,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 00:21:33,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1654 states and 2316 transitions. [2018-11-07 00:21:33,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-11-07 00:21:33,134 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:21:33,134 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-11-07 00:21:33,134 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:21:33,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:21:33,136 INFO L82 PathProgramCache]: Analyzing trace with hash -489192109, now seen corresponding path program 1 times [2018-11-07 00:21:33,136 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:21:33,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:21:33,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:21:33,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:21:33,139 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:21:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:21:33,687 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 00:21:34,092 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:21:34,093 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:21:34,093 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:21:34,093 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 200 with the following transitions: [2018-11-07 00:21:34,093 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [45], [47], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [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], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 00:21:34,098 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:21:34,099 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:21:37,108 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:21:37,108 INFO L272 AbstractInterpreter]: Visited 104 different actions 201 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 00:21:37,115 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:21:37,115 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:21:38,869 INFO L227 lantSequenceWeakener]: Weakened 42 states. On average, predicates are now at 78.44% of their original sizes. [2018-11-07 00:21:38,870 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:22:13,365 INFO L415 sIntCurrentIteration]: We unified 198 AI predicates to 198 [2018-11-07 00:22:13,365 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:22:13,365 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:22:13,365 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [12] total 29 [2018-11-07 00:22:13,366 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:22:13,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-07 00:22:13,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-07 00:22:13,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2018-11-07 00:22:13,367 INFO L87 Difference]: Start difference. First operand 1654 states and 2316 transitions. Second operand 19 states. [2018-11-07 00:23:06,783 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:24:21,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:24:21,491 INFO L93 Difference]: Finished difference Result 3791 states and 5261 transitions. [2018-11-07 00:24:21,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-07 00:24:21,491 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 199 [2018-11-07 00:24:21,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:24:21,505 INFO L225 Difference]: With dead ends: 3791 [2018-11-07 00:24:21,505 INFO L226 Difference]: Without dead ends: 2510 [2018-11-07 00:24:21,511 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 205 GetRequests, 141 SyntacticMatches, 40 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 36.1s TimeCoverageRelationStatistics Valid=139, Invalid=511, Unknown=0, NotChecked=0, Total=650 [2018-11-07 00:24:21,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2510 states. [2018-11-07 00:24:21,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2510 to 2501. [2018-11-07 00:24:21,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2501 states. [2018-11-07 00:24:21,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2501 states to 2501 states and 3193 transitions. [2018-11-07 00:24:21,692 INFO L78 Accepts]: Start accepts. Automaton has 2501 states and 3193 transitions. Word has length 199 [2018-11-07 00:24:21,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:24:21,692 INFO L480 AbstractCegarLoop]: Abstraction has 2501 states and 3193 transitions. [2018-11-07 00:24:21,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-07 00:24:21,693 INFO L276 IsEmpty]: Start isEmpty. Operand 2501 states and 3193 transitions. [2018-11-07 00:24:21,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-11-07 00:24:21,700 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:24:21,701 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:24:21,701 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:24:21,702 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:24:21,702 INFO L82 PathProgramCache]: Analyzing trace with hash -146122316, now seen corresponding path program 1 times [2018-11-07 00:24:21,702 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:24:21,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:24:21,703 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:24:21,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:24:21,703 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:24:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:24:22,174 WARN L179 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-07 00:24:22,570 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 107 proven. 95 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-11-07 00:24:22,570 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:24:22,571 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:24:22,576 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 297 with the following transitions: [2018-11-07 00:24:22,577 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [45], [47], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [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], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [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] [2018-11-07 00:24:22,588 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:24:22,588 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:24:27,400 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:24:27,400 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. [2018-11-07 00:24:27,408 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:24:27,408 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:24:30,026 INFO L227 lantSequenceWeakener]: Weakened 164 states. On average, predicates are now at 77.56% of their original sizes. [2018-11-07 00:24:30,026 INFO L413 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-11-07 00:24:35,518 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 00:24:35,522 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 00:24:35,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:24:35 BoogieIcfgContainer [2018-11-07 00:24:35,522 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 00:24:35,523 INFO L168 Benchmark]: Toolchain (without parser) took 235102.01 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 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-11-07 00:24:35,524 INFO L168 Benchmark]: CDTParser took 0.16 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. [2018-11-07 00:24:35,524 INFO L168 Benchmark]: CACSL2BoogieTranslator took 803.41 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: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. [2018-11-07 00:24:35,525 INFO L168 Benchmark]: Boogie Procedure Inliner took 153.57 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 718.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -817.9 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2018-11-07 00:24:35,527 INFO L168 Benchmark]: Boogie Preprocessor took 100.75 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 00:24:35,527 INFO L168 Benchmark]: RCFGBuilder took 3410.44 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: 132.6 MB). Peak memory consumption was 132.6 MB. Max. memory is 7.1 GB. [2018-11-07 00:24:35,528 INFO L168 Benchmark]: TraceAbstraction took 230628.81 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 2.8 GB in the end (delta: -755.8 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-11-07 00:24:35,535 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 803.41 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: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 153.57 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 718.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -817.9 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.75 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3410.44 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: 132.6 MB). Peak memory consumption was 132.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230628.81 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 2.8 GB in the end (delta: -755.8 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 37]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 37). Cancelled while BasicCegarLoop was analyzing trace of length 297 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 14 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 230.5s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 170.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 871 SDtfs, 4237 SDslu, 794 SDs, 0 SdLazy, 7471 SolverSat, 1036 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 75.4s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 414 GetRequests, 329 SyntacticMatches, 42 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 36.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2501occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 9.8s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9946481707447603 AbsIntWeakeningRatio, 0.1240768094534712 AbsIntAvgWeakeningVarsNumRemoved, 357.2230428360414 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 274 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 618 NumberOfCodeBlocks, 618 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 613 ConstructedInterpolants, 0 QuantifiedInterpolants, 1111390 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 154/222 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown