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_label02_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:16:24,712 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:16:24,715 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:16:24,729 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:16:24,730 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:16:24,731 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:16:24,732 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:16:24,734 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:16:24,736 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:16:24,737 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:16:24,738 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:16:24,738 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:16:24,739 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:16:24,740 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:16:24,741 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:16:24,742 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:16:24,743 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:16:24,745 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:16:24,747 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:16:24,749 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:16:24,750 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:16:24,754 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:16:24,757 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 00:16:24,775 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 00:16:24,799 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:16:24,799 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:16:24,800 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:16:24,801 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:16:24,801 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:16:24,801 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:16:24,801 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:16:24,801 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:16:24,803 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:16:24,803 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:16:24,803 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:16:24,803 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:16:24,804 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:16:24,804 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:16:24,805 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:16:24,805 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:16:24,805 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:16:24,805 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:16:24,805 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:16:24,805 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:16:24,806 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:16:24,806 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:16:24,806 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:16:24,806 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:16:24,806 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:16:24,808 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:16:24,809 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:16:24,809 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:16:24,809 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:16:24,809 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:16:24,809 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:16:24,811 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:16:24,811 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:16:24,811 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:16:24,877 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:16:24,890 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:16:24,895 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:16:24,897 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:16:24,897 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:16:24,898 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label02_false-unreach-call_false-termination.c [2018-11-07 00:16:24,976 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/902ce0e62/f8c42089f7a64821957414401ad13e5f/FLAGbcb6bdfcb [2018-11-07 00:16:25,582 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:16:25,583 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label02_false-unreach-call_false-termination.c [2018-11-07 00:16:25,607 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/902ce0e62/f8c42089f7a64821957414401ad13e5f/FLAGbcb6bdfcb [2018-11-07 00:16:25,627 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/902ce0e62/f8c42089f7a64821957414401ad13e5f [2018-11-07 00:16:25,640 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:16:25,642 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:16:25,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:16:25,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:16:25,647 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:16:25,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:16:25" (1/1) ... [2018-11-07 00:16:25,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1aeb7c5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:25, skipping insertion in model container [2018-11-07 00:16:25,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:16:25" (1/1) ... [2018-11-07 00:16:25,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:16:25,730 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:16:26,321 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:16:26,326 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:16:26,496 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:16:26,524 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:16:26,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:26 WrapperNode [2018-11-07 00:16:26,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:16:26,525 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:16:26,525 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:16:26,525 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:16:26,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:26" (1/1) ... [2018-11-07 00:16:26,664 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:26" (1/1) ... [2018-11-07 00:16:26,676 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:16:26,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:16:26,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:16:26,676 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:16:26,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:26" (1/1) ... [2018-11-07 00:16:26,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:26" (1/1) ... [2018-11-07 00:16:26,706 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:26" (1/1) ... [2018-11-07 00:16:26,706 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:26" (1/1) ... [2018-11-07 00:16:26,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:26" (1/1) ... [2018-11-07 00:16:26,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:26" (1/1) ... [2018-11-07 00:16:26,810 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:26" (1/1) ... [2018-11-07 00:16:26,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:16:26,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:16:26,822 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:16:26,822 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:16:26,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:26" (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 00:16:26,879 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:16:26,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:16:26,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:16:26,879 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:16:26,879 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:16:26,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:16:26,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:16:26,880 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:16:26,880 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:16:30,258 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:16:30,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:16:30 BoogieIcfgContainer [2018-11-07 00:16:30,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:16:30,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:16:30,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:16:30,265 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:16:30,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:16:25" (1/3) ... [2018-11-07 00:16:30,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae50cf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:16:30, skipping insertion in model container [2018-11-07 00:16:30,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:26" (2/3) ... [2018-11-07 00:16:30,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae50cf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:16:30, skipping insertion in model container [2018-11-07 00:16:30,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:16:30" (3/3) ... [2018-11-07 00:16:30,269 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label02_false-unreach-call_false-termination.c [2018-11-07 00:16:30,277 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:16:30,286 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:16:30,304 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:16:30,344 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:16:30,344 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:16:30,344 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:16:30,344 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:16:30,345 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:16:30,345 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:16:30,345 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:16:30,345 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:16:30,375 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 00:16:30,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-07 00:16:30,382 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:16:30,383 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:16:30,385 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:16:30,392 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:16:30,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1312024620, now seen corresponding path program 1 times [2018-11-07 00:16:30,394 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:16:30,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:16:30,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:16:30,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:16:30,445 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:16:30,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:16:30,754 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:16:30,794 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 00:16:30,797 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:16:30,797 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 00:16:30,797 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:16:30,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 00:16:30,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 00:16:30,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:16:30,820 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-11-07 00:16:32,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:16:32,844 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-11-07 00:16:32,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 00:16:32,847 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-11-07 00:16:32,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:16:32,865 INFO L225 Difference]: With dead ends: 691 [2018-11-07 00:16:32,865 INFO L226 Difference]: Without dead ends: 434 [2018-11-07 00:16:32,873 INFO L604 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 [2018-11-07 00:16:32,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-11-07 00:16:32,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-11-07 00:16:32,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-11-07 00:16:32,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-11-07 00:16:32,958 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 16 [2018-11-07 00:16:32,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:16:32,958 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-11-07 00:16:32,959 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 00:16:32,959 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-11-07 00:16:32,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-11-07 00:16:32,964 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:16:32,965 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 00:16:32,965 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:16:32,965 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:16:32,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1406044400, now seen corresponding path program 1 times [2018-11-07 00:16:32,966 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:16:32,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:16:32,967 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:16:32,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:16:32,968 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:16:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:16:33,256 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:16:33,257 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:16:33,257 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:16:33,257 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:16:33,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:16:33,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:16:33,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:16:33,261 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-11-07 00:16:37,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:16:37,015 INFO L93 Difference]: Finished difference Result 1588 states and 2935 transitions. [2018-11-07 00:16:37,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:16:37,017 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2018-11-07 00:16:37,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:16:37,031 INFO L225 Difference]: With dead ends: 1588 [2018-11-07 00:16:37,031 INFO L226 Difference]: Without dead ends: 1160 [2018-11-07 00:16:37,036 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 00:16:37,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2018-11-07 00:16:37,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1153. [2018-11-07 00:16:37,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1153 states. [2018-11-07 00:16:37,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1887 transitions. [2018-11-07 00:16:37,111 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1887 transitions. Word has length 86 [2018-11-07 00:16:37,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:16:37,112 INFO L480 AbstractCegarLoop]: Abstraction has 1153 states and 1887 transitions. [2018-11-07 00:16:37,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:16:37,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1887 transitions. [2018-11-07 00:16:37,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-11-07 00:16:37,126 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:16:37,128 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:16:37,128 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:16:37,128 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:16:37,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1998821456, now seen corresponding path program 1 times [2018-11-07 00:16:37,129 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:16:37,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:16:37,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:16:37,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:16:37,166 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:16:37,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:16:37,763 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:16:37,763 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:16:37,763 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:16:37,764 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:16:37,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:16:37,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:16:37,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:16:37,765 INFO L87 Difference]: Start difference. First operand 1153 states and 1887 transitions. Second operand 6 states. [2018-11-07 00:16:42,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:16:42,062 INFO L93 Difference]: Finished difference Result 3039 states and 5048 transitions. [2018-11-07 00:16:42,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 00:16:42,063 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2018-11-07 00:16:42,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:16:42,078 INFO L225 Difference]: With dead ends: 3039 [2018-11-07 00:16:42,079 INFO L226 Difference]: Without dead ends: 1892 [2018-11-07 00:16:42,087 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-07 00:16:42,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1892 states. [2018-11-07 00:16:42,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1892 to 1805. [2018-11-07 00:16:42,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1805 states. [2018-11-07 00:16:42,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1805 states to 1805 states and 2792 transitions. [2018-11-07 00:16:42,152 INFO L78 Accepts]: Start accepts. Automaton has 1805 states and 2792 transitions. Word has length 182 [2018-11-07 00:16:42,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:16:42,153 INFO L480 AbstractCegarLoop]: Abstraction has 1805 states and 2792 transitions. [2018-11-07 00:16:42,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:16:42,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1805 states and 2792 transitions. [2018-11-07 00:16:42,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-11-07 00:16:42,161 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:16:42,161 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:16:42,161 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:16:42,162 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:16:42,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1936947451, now seen corresponding path program 1 times [2018-11-07 00:16:42,162 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:16:42,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:16:42,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:16:42,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:16:42,164 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:16:42,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:16:42,428 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 18 proven. 66 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 00:16:42,429 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:16:42,429 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:16:42,430 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 254 with the following transitions: [2018-11-07 00:16:42,433 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [29], [31], [34], [42], [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], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [878], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 00:16:42,517 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:16:42,518 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:16:46,462 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:16:49,512 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:16:49,513 INFO L272 AbstractInterpreter]: Visited 171 different actions 171 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 00:16:49,557 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:16:49,558 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:16:52,366 INFO L227 lantSequenceWeakener]: Weakened 245 states. On average, predicates are now at 77.32% of their original sizes. [2018-11-07 00:16:52,367 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:16:52,955 INFO L415 sIntCurrentIteration]: We unified 252 AI predicates to 252 [2018-11-07 00:16:52,955 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:16:52,956 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:16:52,956 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2018-11-07 00:16:52,957 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:16:52,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 00:16:52,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 00:16:52,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:16:52,958 INFO L87 Difference]: Start difference. First operand 1805 states and 2792 transitions. Second operand 8 states. [2018-11-07 00:17:08,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:17:08,747 INFO L93 Difference]: Finished difference Result 3789 states and 5798 transitions. [2018-11-07 00:17:08,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 00:17:08,748 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 253 [2018-11-07 00:17:08,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:17:08,757 INFO L225 Difference]: With dead ends: 3789 [2018-11-07 00:17:08,757 INFO L226 Difference]: Without dead ends: 1990 [2018-11-07 00:17:08,764 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 254 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 00:17:08,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1990 states. [2018-11-07 00:17:08,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1990 to 1988. [2018-11-07 00:17:08,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1988 states. [2018-11-07 00:17:08,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1988 states to 1988 states and 2983 transitions. [2018-11-07 00:17:08,817 INFO L78 Accepts]: Start accepts. Automaton has 1988 states and 2983 transitions. Word has length 253 [2018-11-07 00:17:08,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:17:08,817 INFO L480 AbstractCegarLoop]: Abstraction has 1988 states and 2983 transitions. [2018-11-07 00:17:08,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 00:17:08,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1988 states and 2983 transitions. [2018-11-07 00:17:08,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-11-07 00:17:08,824 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:17:08,825 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:17:08,825 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:17:08,825 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:17:08,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1533830591, now seen corresponding path program 1 times [2018-11-07 00:17:08,826 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:17:08,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:17:08,827 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:17:08,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:17:08,827 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:17:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:17:09,344 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 00:17:09,544 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 00:17:09,769 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 00:17:10,448 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:17:10,449 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:17:10,449 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:17:10,450 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 268 with the following transitions: [2018-11-07 00:17:10,450 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [29], [31], [34], [42], [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], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [878], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 00:17:10,458 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:17:10,458 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:17:14,909 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:17:22,202 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:17:22,203 INFO L272 AbstractInterpreter]: Visited 174 different actions 341 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 00:17:22,209 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:17:22,209 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:17:24,735 INFO L227 lantSequenceWeakener]: Weakened 33 states. On average, predicates are now at 78.84% of their original sizes. [2018-11-07 00:17:24,735 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:18:01,474 INFO L415 sIntCurrentIteration]: We unified 266 AI predicates to 266 [2018-11-07 00:18:01,474 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:18:01,475 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:18:01,475 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [14] total 34 [2018-11-07 00:18:01,475 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:18:01,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-07 00:18:01,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-07 00:18:01,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2018-11-07 00:18:01,477 INFO L87 Difference]: Start difference. First operand 1988 states and 2983 transitions. Second operand 22 states. Received shutdown request... [2018-11-07 00:20:28,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-07 00:20:28,732 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 00:20:28,738 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 00:20:28,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:20:28 BoogieIcfgContainer [2018-11-07 00:20:28,738 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 00:20:28,739 INFO L168 Benchmark]: Toolchain (without parser) took 243098.39 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-07 00:20:28,740 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 00:20:28,741 INFO L168 Benchmark]: CACSL2BoogieTranslator took 881.52 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 00:20:28,742 INFO L168 Benchmark]: Boogie Procedure Inliner took 150.70 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 725.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -812.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2018-11-07 00:20:28,743 INFO L168 Benchmark]: Boogie Preprocessor took 145.09 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 00:20:28,743 INFO L168 Benchmark]: RCFGBuilder took 3438.31 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 132.4 MB). Peak memory consumption was 132.4 MB. Max. memory is 7.1 GB. [2018-11-07 00:20:28,744 INFO L168 Benchmark]: TraceAbstraction took 238477.43 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -460.7 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-07 00:20:28,749 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 881.52 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 150.70 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 725.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -812.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 145.09 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3438.31 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 132.4 MB). Peak memory consumption was 132.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 238477.43 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -460.7 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 31]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 31). Cancelled while BasicCegarLoop was constructing difference of abstraction (1988states) and FLOYD_HOARE automaton (currently 19 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (1763 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 238.4s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 173.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 639 SDtfs, 3723 SDslu, 755 SDs, 0 SdLazy, 7568 SolverSat, 1142 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 63.6s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 558 GetRequests, 458 SyntacticMatches, 45 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 41.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1988occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 18.8s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.995775278383974 AbsIntWeakeningRatio, 0.10038610038610038 AbsIntAvgWeakeningVarsNumRemoved, 663.8571428571429 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 96 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 804 NumberOfCodeBlocks, 804 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 799 ConstructedInterpolants, 0 QuantifiedInterpolants, 2565137 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 142/210 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown