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/Problem10_label11_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 02:43:10,684 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 02:43:10,687 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 02:43:10,706 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 02:43:10,706 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 02:43:10,707 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 02:43:10,709 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 02:43:10,712 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 02:43:10,715 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 02:43:10,723 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 02:43:10,724 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 02:43:10,724 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 02:43:10,725 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 02:43:10,728 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 02:43:10,730 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 02:43:10,730 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 02:43:10,731 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 02:43:10,736 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 02:43:10,739 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 02:43:10,741 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 02:43:10,742 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 02:43:10,745 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 02:43:10,748 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 02:43:10,759 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 02:43:10,759 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 02:43:10,761 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 02:43:10,762 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 02:43:10,763 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 02:43:10,789 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 02:43:10,790 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 02:43:10,791 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 02:43:10,791 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 02:43:10,792 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 02:43:10,792 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 02:43:10,792 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 02:43:10,792 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 02:43:10,793 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 02:43:10,793 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 02:43:10,793 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 02:43:10,793 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 02:43:10,794 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 02:43:10,794 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 02:43:10,794 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 02:43:10,796 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 02:43:10,796 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 02:43:10,796 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 02:43:10,796 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 02:43:10,797 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 02:43:10,798 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 02:43:10,798 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 02:43:10,798 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 02:43:10,798 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 02:43:10,799 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 02:43:10,799 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 02:43:10,799 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 02:43:10,799 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 02:43:10,799 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 02:43:10,800 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 02:43:10,800 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 02:43:10,800 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 02:43:10,800 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 02:43:10,800 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 02:43:10,867 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 02:43:10,882 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 02:43:10,886 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 02:43:10,887 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 02:43:10,888 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 02:43:10,889 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label11_true-unreach-call.c [2018-11-07 02:43:10,953 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06fad7e84/b211a601cd3b424f988f383c201b6697/FLAG402f3a153 [2018-11-07 02:43:11,547 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 02:43:11,548 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label11_true-unreach-call.c [2018-11-07 02:43:11,569 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06fad7e84/b211a601cd3b424f988f383c201b6697/FLAG402f3a153 [2018-11-07 02:43:11,584 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06fad7e84/b211a601cd3b424f988f383c201b6697 [2018-11-07 02:43:11,596 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 02:43:11,598 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 02:43:11,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 02:43:11,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 02:43:11,603 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 02:43:11,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:43:11" (1/1) ... [2018-11-07 02:43:11,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58dd67db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:43:11, skipping insertion in model container [2018-11-07 02:43:11,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:43:11" (1/1) ... [2018-11-07 02:43:11,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 02:43:11,689 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 02:43:12,270 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 02:43:12,276 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 02:43:12,391 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 02:43:12,409 INFO L193 MainTranslator]: Completed translation [2018-11-07 02:43:12,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:43:12 WrapperNode [2018-11-07 02:43:12,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 02:43:12,411 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 02:43:12,411 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 02:43:12,411 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 02:43:12,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:43:12" (1/1) ... [2018-11-07 02:43:12,531 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:43:12" (1/1) ... [2018-11-07 02:43:12,546 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 02:43:12,547 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 02:43:12,547 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 02:43:12,547 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 02:43:12,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:43:12" (1/1) ... [2018-11-07 02:43:12,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:43:12" (1/1) ... [2018-11-07 02:43:12,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:43:12" (1/1) ... [2018-11-07 02:43:12,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:43:12" (1/1) ... [2018-11-07 02:43:12,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:43:12" (1/1) ... [2018-11-07 02:43:12,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:43:12" (1/1) ... [2018-11-07 02:43:12,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:43:12" (1/1) ... [2018-11-07 02:43:12,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 02:43:12,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 02:43:12,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 02:43:12,648 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 02:43:12,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:43:12" (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 02:43:12,721 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 02:43:12,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 02:43:12,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 02:43:12,721 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 02:43:12,721 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 02:43:12,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 02:43:12,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 02:43:12,722 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 02:43:12,722 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 02:43:15,808 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 02:43:15,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:43:15 BoogieIcfgContainer [2018-11-07 02:43:15,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 02:43:15,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 02:43:15,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 02:43:15,814 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 02:43:15,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:43:11" (1/3) ... [2018-11-07 02:43:15,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69efed7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:43:15, skipping insertion in model container [2018-11-07 02:43:15,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:43:12" (2/3) ... [2018-11-07 02:43:15,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69efed7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:43:15, skipping insertion in model container [2018-11-07 02:43:15,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:43:15" (3/3) ... [2018-11-07 02:43:15,817 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label11_true-unreach-call.c [2018-11-07 02:43:15,826 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 02:43:15,834 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 02:43:15,848 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 02:43:15,887 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 02:43:15,887 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 02:43:15,887 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 02:43:15,887 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 02:43:15,887 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 02:43:15,888 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 02:43:15,888 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 02:43:15,888 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 02:43:15,915 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-11-07 02:43:15,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-11-07 02:43:15,926 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:43:15,927 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 02:43:15,930 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:43:15,936 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:43:15,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1604912700, now seen corresponding path program 1 times [2018-11-07 02:43:15,939 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:43:15,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:43:15,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:43:15,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:43:15,992 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:43:16,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:43:16,475 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 02:43:16,530 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 02:43:16,532 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:43:16,534 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 02:43:16,534 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:43:16,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 02:43:16,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 02:43:16,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 02:43:16,562 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-11-07 02:43:18,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:43:18,339 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-11-07 02:43:18,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 02:43:18,342 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2018-11-07 02:43:18,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:43:18,360 INFO L225 Difference]: With dead ends: 574 [2018-11-07 02:43:18,360 INFO L226 Difference]: Without dead ends: 356 [2018-11-07 02:43:18,367 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 02:43:18,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-11-07 02:43:18,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-11-07 02:43:18,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-11-07 02:43:18,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-11-07 02:43:18,443 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 68 [2018-11-07 02:43:18,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:43:18,444 INFO L480 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-11-07 02:43:18,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 02:43:18,444 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-11-07 02:43:18,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-11-07 02:43:18,455 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:43:18,455 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 02:43:18,456 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:43:18,456 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:43:18,456 INFO L82 PathProgramCache]: Analyzing trace with hash 633419456, now seen corresponding path program 1 times [2018-11-07 02:43:18,456 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:43:18,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:43:18,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:43:18,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:43:18,458 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:43:18,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:43:18,943 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:43:18,943 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:43:18,943 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 02:43:18,944 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:43:18,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 02:43:18,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 02:43:18,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 02:43:18,947 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 5 states. [2018-11-07 02:43:21,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:43:21,443 INFO L93 Difference]: Finished difference Result 1140 states and 2022 transitions. [2018-11-07 02:43:21,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 02:43:21,447 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 188 [2018-11-07 02:43:21,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:43:21,454 INFO L225 Difference]: With dead ends: 1140 [2018-11-07 02:43:21,455 INFO L226 Difference]: Without dead ends: 790 [2018-11-07 02:43:21,458 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-07 02:43:21,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2018-11-07 02:43:21,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 784. [2018-11-07 02:43:21,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2018-11-07 02:43:21,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1300 transitions. [2018-11-07 02:43:21,510 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1300 transitions. Word has length 188 [2018-11-07 02:43:21,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:43:21,511 INFO L480 AbstractCegarLoop]: Abstraction has 784 states and 1300 transitions. [2018-11-07 02:43:21,511 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 02:43:21,511 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1300 transitions. [2018-11-07 02:43:21,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-11-07 02:43:21,518 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:43:21,518 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 02:43:21,519 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:43:21,519 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:43:21,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1277434075, now seen corresponding path program 1 times [2018-11-07 02:43:21,519 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:43:21,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:43:21,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:43:21,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:43:21,521 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:43:21,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:43:21,981 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:43:21,982 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:43:21,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 02:43:21,982 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:43:21,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 02:43:21,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 02:43:21,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 02:43:21,983 INFO L87 Difference]: Start difference. First operand 784 states and 1300 transitions. Second operand 6 states. [2018-11-07 02:43:26,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:43:26,004 INFO L93 Difference]: Finished difference Result 1975 states and 3367 transitions. [2018-11-07 02:43:26,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 02:43:26,006 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 195 [2018-11-07 02:43:26,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:43:26,018 INFO L225 Difference]: With dead ends: 1975 [2018-11-07 02:43:26,018 INFO L226 Difference]: Without dead ends: 1197 [2018-11-07 02:43:26,027 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 02:43:26,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2018-11-07 02:43:26,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1177. [2018-11-07 02:43:26,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1177 states. [2018-11-07 02:43:26,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1754 transitions. [2018-11-07 02:43:26,074 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1754 transitions. Word has length 195 [2018-11-07 02:43:26,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:43:26,074 INFO L480 AbstractCegarLoop]: Abstraction has 1177 states and 1754 transitions. [2018-11-07 02:43:26,074 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 02:43:26,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1754 transitions. [2018-11-07 02:43:26,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-11-07 02:43:26,082 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:43:26,082 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:43:26,083 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:43:26,083 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:43:26,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1200598705, now seen corresponding path program 1 times [2018-11-07 02:43:26,083 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:43:26,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:43:26,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:43:26,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:43:26,085 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:43:26,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:43:26,581 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-07 02:43:26,773 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 02:43:27,420 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:43:27,421 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 02:43:27,421 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 02:43:27,422 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 260 with the following transitions: [2018-11-07 02:43:27,424 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [445], [447], [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], [694], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-07 02:43:27,509 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 02:43:27,509 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 02:43:29,576 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 02:43:51,417 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 02:43:51,419 INFO L272 AbstractInterpreter]: Visited 128 different actions 738 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 02:43:51,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:43:51,433 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 02:43:55,687 INFO L227 lantSequenceWeakener]: Weakened 86 states. On average, predicates are now at 75.99% of their original sizes. [2018-11-07 02:43:55,688 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 02:44:11,941 INFO L415 sIntCurrentIteration]: We unified 258 AI predicates to 258 [2018-11-07 02:44:11,941 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 02:44:11,942 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 02:44:11,942 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [13] total 27 [2018-11-07 02:44:11,942 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:44:11,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 02:44:11,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 02:44:11,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2018-11-07 02:44:11,944 INFO L87 Difference]: Start difference. First operand 1177 states and 1754 transitions. Second operand 16 states. [2018-11-07 02:46:26,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:46:26,175 INFO L93 Difference]: Finished difference Result 2808 states and 4265 transitions. [2018-11-07 02:46:26,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-07 02:46:26,176 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 259 [2018-11-07 02:46:26,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:46:26,185 INFO L225 Difference]: With dead ends: 2808 [2018-11-07 02:46:26,186 INFO L226 Difference]: Without dead ends: 1637 [2018-11-07 02:46:26,191 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 266 GetRequests, 218 SyntacticMatches, 26 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2018-11-07 02:46:26,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2018-11-07 02:46:26,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1619. [2018-11-07 02:46:26,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1619 states. [2018-11-07 02:46:26,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1619 states to 1619 states and 2226 transitions. [2018-11-07 02:46:26,340 INFO L78 Accepts]: Start accepts. Automaton has 1619 states and 2226 transitions. Word has length 259 [2018-11-07 02:46:26,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:46:26,340 INFO L480 AbstractCegarLoop]: Abstraction has 1619 states and 2226 transitions. [2018-11-07 02:46:26,340 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-07 02:46:26,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1619 states and 2226 transitions. [2018-11-07 02:46:26,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-11-07 02:46:26,349 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:46:26,349 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:46:26,350 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:46:26,350 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:46:26,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1067175916, now seen corresponding path program 1 times [2018-11-07 02:46:26,351 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:46:26,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:46:26,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:46:26,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:46:26,352 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:46:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:46:26,654 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 02:46:27,629 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 123 proven. 6 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-11-07 02:46:27,630 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 02:46:27,630 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 02:46:27,630 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 269 with the following transitions: [2018-11-07 02:46:27,631 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [445], [447], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [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], [694], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-07 02:46:27,641 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 02:46:27,642 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 02:46:29,118 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 02:46:47,696 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 02:46:47,696 INFO L272 AbstractInterpreter]: Visited 128 different actions 738 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 02:46:47,703 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:46:47,703 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 02:46:50,520 INFO L227 lantSequenceWeakener]: Weakened 82 states. On average, predicates are now at 75.33% of their original sizes. [2018-11-07 02:46:50,521 INFO L413 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-11-07 02:47:14,913 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 02:47:14,917 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 02:47:14,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:47:14 BoogieIcfgContainer [2018-11-07 02:47:14,918 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 02:47:14,918 INFO L168 Benchmark]: Toolchain (without parser) took 243321.89 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -282.9 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-11-07 02:47:14,920 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 02:47:14,920 INFO L168 Benchmark]: CACSL2BoogieTranslator took 811.48 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 02:47:14,921 INFO L168 Benchmark]: Boogie Procedure Inliner took 135.35 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 734.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -821.9 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2018-11-07 02:47:14,922 INFO L168 Benchmark]: Boogie Preprocessor took 101.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2018-11-07 02:47:14,923 INFO L168 Benchmark]: RCFGBuilder took 3161.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 104.3 MB). Peak memory consumption was 104.3 MB. Max. memory is 7.1 GB. [2018-11-07 02:47:14,923 INFO L168 Benchmark]: TraceAbstraction took 239107.97 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 1.7 GB in the end (delta: 389.0 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-11-07 02:47:14,928 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 811.48 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 135.35 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 734.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -821.9 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 101.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3161.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 104.3 MB). Peak memory consumption was 104.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 239107.97 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 1.7 GB in the end (delta: 389.0 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 187]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 187). Cancelled while BasicCegarLoop was analyzing trace of length 269 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 20 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 239.0s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 142.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 455 SDtfs, 2543 SDslu, 495 SDs, 0 SdLazy, 4757 SolverSat, 895 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 74.4s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 290 GetRequests, 225 SyntacticMatches, 30 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 18.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1619occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 44.0s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9955072463768116 AbsIntWeakeningRatio, 0.09904761904761905 AbsIntAvgWeakeningVarsNumRemoved, 156.4 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 44 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 710 NumberOfCodeBlocks, 710 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 706 ConstructedInterpolants, 0 QuantifiedInterpolants, 1064181 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 313/315 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown