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/Problem13_label03_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 03:14:58,778 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 03:14:58,780 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 03:14:58,792 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 03:14:58,792 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 03:14:58,793 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 03:14:58,794 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 03:14:58,796 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 03:14:58,798 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 03:14:58,799 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 03:14:58,800 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 03:14:58,800 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 03:14:58,801 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 03:14:58,802 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 03:14:58,803 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 03:14:58,804 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 03:14:58,804 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 03:14:58,806 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 03:14:58,809 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 03:14:58,810 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 03:14:58,811 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 03:14:58,813 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 03:14:58,815 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 03:14:58,825 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 03:14:58,850 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 03:14:58,851 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 03:14:58,852 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 03:14:58,852 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 03:14:58,852 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 03:14:58,855 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 03:14:58,855 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 03:14:58,855 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 03:14:58,855 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 03:14:58,856 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 03:14:58,856 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 03:14:58,857 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 03:14:58,857 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 03:14:58,858 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 03:14:58,858 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 03:14:58,858 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 03:14:58,858 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 03:14:58,858 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 03:14:58,858 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 03:14:58,860 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 03:14:58,860 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 03:14:58,860 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 03:14:58,861 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 03:14:58,861 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 03:14:58,861 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:14:58,861 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 03:14:58,862 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 03:14:58,862 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 03:14:58,862 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 03:14:58,862 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 03:14:58,862 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 03:14:58,862 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 03:14:58,863 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 03:14:58,863 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 03:14:58,935 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 03:14:58,956 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 03:14:58,960 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 03:14:58,962 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 03:14:58,962 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 03:14:58,963 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label03_true-unreach-call.c [2018-11-07 03:14:59,037 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2e766c13/ee9bf8e060284b0cb7c3e90400ab91b9/FLAG196c358b2 [2018-11-07 03:14:59,895 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 03:14:59,896 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label03_true-unreach-call.c [2018-11-07 03:14:59,931 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2e766c13/ee9bf8e060284b0cb7c3e90400ab91b9/FLAG196c358b2 [2018-11-07 03:14:59,948 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2e766c13/ee9bf8e060284b0cb7c3e90400ab91b9 [2018-11-07 03:14:59,962 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 03:14:59,964 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 03:14:59,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 03:14:59,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 03:14:59,970 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 03:14:59,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:14:59" (1/1) ... [2018-11-07 03:14:59,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d100604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:14:59, skipping insertion in model container [2018-11-07 03:14:59,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:14:59" (1/1) ... [2018-11-07 03:14:59,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 03:15:00,167 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 03:15:01,695 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:15:01,700 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 03:15:02,482 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:15:02,519 INFO L193 MainTranslator]: Completed translation [2018-11-07 03:15:02,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:15:02 WrapperNode [2018-11-07 03:15:02,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 03:15:02,521 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 03:15:02,522 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 03:15:02,522 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 03:15:02,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:15:02" (1/1) ... [2018-11-07 03:15:02,919 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:15:02" (1/1) ... [2018-11-07 03:15:02,928 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 03:15:02,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 03:15:02,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 03:15:02,929 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 03:15:02,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:15:02" (1/1) ... [2018-11-07 03:15:02,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:15:02" (1/1) ... [2018-11-07 03:15:02,982 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:15:02" (1/1) ... [2018-11-07 03:15:02,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:15:02" (1/1) ... [2018-11-07 03:15:03,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:15:02" (1/1) ... [2018-11-07 03:15:03,162 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:15:02" (1/1) ... [2018-11-07 03:15:03,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:15:02" (1/1) ... [2018-11-07 03:15:03,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 03:15:03,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 03:15:03,233 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 03:15:03,233 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 03:15:03,234 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:15:02" (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 03:15:03,299 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 03:15:03,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 03:15:03,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 03:15:03,300 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 03:15:03,300 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 03:15:03,300 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 03:15:03,301 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 03:15:03,301 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 03:15:03,301 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 03:15:03,301 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 03:15:03,301 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 03:15:03,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 03:15:03,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 03:15:03,303 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 03:15:03,303 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 03:15:12,580 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 03:15:12,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:15:12 BoogieIcfgContainer [2018-11-07 03:15:12,581 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 03:15:12,582 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 03:15:12,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 03:15:12,586 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 03:15:12,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:14:59" (1/3) ... [2018-11-07 03:15:12,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4751d34a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:15:12, skipping insertion in model container [2018-11-07 03:15:12,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:15:02" (2/3) ... [2018-11-07 03:15:12,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4751d34a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:15:12, skipping insertion in model container [2018-11-07 03:15:12,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:15:12" (3/3) ... [2018-11-07 03:15:12,589 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label03_true-unreach-call.c [2018-11-07 03:15:12,599 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 03:15:12,610 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 03:15:12,629 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 03:15:12,679 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 03:15:12,680 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 03:15:12,680 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 03:15:12,680 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 03:15:12,680 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 03:15:12,680 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 03:15:12,680 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 03:15:12,681 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 03:15:12,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 03:15:12,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-07 03:15:12,753 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:15:12,755 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] [2018-11-07 03:15:12,758 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:15:12,763 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:15:12,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1009220837, now seen corresponding path program 1 times [2018-11-07 03:15:12,767 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:15:12,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:15:12,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:15:12,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:15:12,821 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:15:12,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:15:13,238 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-11-07 03:15:13,257 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 03:15:13,260 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:15:13,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:15:13,261 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:15:13,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:15:13,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:15:13,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:15:13,312 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-11-07 03:15:26,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:15:26,648 INFO L93 Difference]: Finished difference Result 4065 states and 7606 transitions. [2018-11-07 03:15:26,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:15:26,659 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2018-11-07 03:15:26,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:15:26,708 INFO L225 Difference]: With dead ends: 4065 [2018-11-07 03:15:26,708 INFO L226 Difference]: Without dead ends: 2939 [2018-11-07 03:15:26,722 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:15:26,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2018-11-07 03:15:26,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 1972. [2018-11-07 03:15:26,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1972 states. [2018-11-07 03:15:26,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1972 states to 1972 states and 3594 transitions. [2018-11-07 03:15:26,895 INFO L78 Accepts]: Start accepts. Automaton has 1972 states and 3594 transitions. Word has length 41 [2018-11-07 03:15:26,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:15:26,896 INFO L480 AbstractCegarLoop]: Abstraction has 1972 states and 3594 transitions. [2018-11-07 03:15:26,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:15:26,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1972 states and 3594 transitions. [2018-11-07 03:15:26,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-11-07 03:15:26,903 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:15:26,903 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:15:26,904 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:15:26,904 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:15:26,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1838928187, now seen corresponding path program 1 times [2018-11-07 03:15:26,904 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:15:26,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:15:26,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:15:26,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:15:26,906 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:15:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:15:27,353 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:15:27,354 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:15:27,354 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:15:27,354 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:15:27,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:15:27,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:15:27,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:15:27,357 INFO L87 Difference]: Start difference. First operand 1972 states and 3594 transitions. Second operand 6 states. [2018-11-07 03:15:42,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:15:42,146 INFO L93 Difference]: Finished difference Result 7229 states and 13602 transitions. [2018-11-07 03:15:42,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:15:42,147 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2018-11-07 03:15:42,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:15:42,180 INFO L225 Difference]: With dead ends: 7229 [2018-11-07 03:15:42,180 INFO L226 Difference]: Without dead ends: 5263 [2018-11-07 03:15:42,195 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 03:15:42,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5263 states. [2018-11-07 03:15:42,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5263 to 5234. [2018-11-07 03:15:42,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5234 states. [2018-11-07 03:15:42,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 8445 transitions. [2018-11-07 03:15:42,444 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 8445 transitions. Word has length 114 [2018-11-07 03:15:42,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:15:42,444 INFO L480 AbstractCegarLoop]: Abstraction has 5234 states and 8445 transitions. [2018-11-07 03:15:42,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:15:42,445 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 8445 transitions. [2018-11-07 03:15:42,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-11-07 03:15:42,455 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:15:42,455 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:15:42,455 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:15:42,456 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:15:42,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1607294046, now seen corresponding path program 1 times [2018-11-07 03:15:42,457 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:15:42,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:15:42,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:15:42,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:15:42,458 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:15:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:15:42,703 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:15:42,704 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:15:42,704 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 03:15:42,704 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:15:42,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 03:15:42,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 03:15:42,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 03:15:42,705 INFO L87 Difference]: Start difference. First operand 5234 states and 8445 transitions. Second operand 5 states. [2018-11-07 03:15:52,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:15:52,484 INFO L93 Difference]: Finished difference Result 15736 states and 26179 transitions. [2018-11-07 03:15:52,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 03:15:52,486 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2018-11-07 03:15:52,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:15:52,542 INFO L225 Difference]: With dead ends: 15736 [2018-11-07 03:15:52,542 INFO L226 Difference]: Without dead ends: 10508 [2018-11-07 03:15:52,564 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:15:52,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10508 states. [2018-11-07 03:15:52,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10508 to 10305. [2018-11-07 03:15:52,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10305 states. [2018-11-07 03:15:52,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10305 states to 10305 states and 15524 transitions. [2018-11-07 03:15:52,887 INFO L78 Accepts]: Start accepts. Automaton has 10305 states and 15524 transitions. Word has length 143 [2018-11-07 03:15:52,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:15:52,888 INFO L480 AbstractCegarLoop]: Abstraction has 10305 states and 15524 transitions. [2018-11-07 03:15:52,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 03:15:52,888 INFO L276 IsEmpty]: Start isEmpty. Operand 10305 states and 15524 transitions. [2018-11-07 03:15:52,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-11-07 03:15:52,892 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:15:52,893 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:15:53,017 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:15:53,020 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:15:53,020 INFO L82 PathProgramCache]: Analyzing trace with hash -19334682, now seen corresponding path program 1 times [2018-11-07 03:15:53,020 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:15:53,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:15:53,021 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:15:53,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:15:53,022 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:15:53,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:15:53,391 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:15:53,392 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:15:53,392 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 03:15:53,392 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:15:53,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 03:15:53,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 03:15:53,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 03:15:53,393 INFO L87 Difference]: Start difference. First operand 10305 states and 15524 transitions. Second operand 5 states. [2018-11-07 03:16:11,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:16:11,519 INFO L93 Difference]: Finished difference Result 32114 states and 50338 transitions. [2018-11-07 03:16:11,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 03:16:11,522 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2018-11-07 03:16:11,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:16:11,625 INFO L225 Difference]: With dead ends: 32114 [2018-11-07 03:16:11,625 INFO L226 Difference]: Without dead ends: 21815 [2018-11-07 03:16:11,677 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:16:11,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21815 states. [2018-11-07 03:16:12,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21815 to 21593. [2018-11-07 03:16:12,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21593 states. [2018-11-07 03:16:12,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21593 states to 21593 states and 31893 transitions. [2018-11-07 03:16:12,295 INFO L78 Accepts]: Start accepts. Automaton has 21593 states and 31893 transitions. Word has length 147 [2018-11-07 03:16:12,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:16:12,296 INFO L480 AbstractCegarLoop]: Abstraction has 21593 states and 31893 transitions. [2018-11-07 03:16:12,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 03:16:12,296 INFO L276 IsEmpty]: Start isEmpty. Operand 21593 states and 31893 transitions. [2018-11-07 03:16:12,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-11-07 03:16:12,304 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:16:12,304 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:16:12,305 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:16:12,305 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:16:12,305 INFO L82 PathProgramCache]: Analyzing trace with hash -389216454, now seen corresponding path program 1 times [2018-11-07 03:16:12,306 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:16:12,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:16:12,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:16:12,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:16:12,307 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:16:12,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:16:12,555 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:16:12,556 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:16:12,556 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:16:12,556 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:16:12,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:16:12,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:16:12,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:16:12,558 INFO L87 Difference]: Start difference. First operand 21593 states and 31893 transitions. Second operand 4 states. [2018-11-07 03:16:23,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:16:23,745 INFO L93 Difference]: Finished difference Result 83799 states and 134375 transitions. [2018-11-07 03:16:23,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:16:23,747 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2018-11-07 03:16:23,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:16:24,057 INFO L225 Difference]: With dead ends: 83799 [2018-11-07 03:16:24,057 INFO L226 Difference]: Without dead ends: 62212 [2018-11-07 03:16:24,173 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:16:24,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62212 states. [2018-11-07 03:16:25,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62212 to 62162. [2018-11-07 03:16:25,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62162 states. [2018-11-07 03:16:25,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62162 states to 62162 states and 90660 transitions. [2018-11-07 03:16:25,740 INFO L78 Accepts]: Start accepts. Automaton has 62162 states and 90660 transitions. Word has length 157 [2018-11-07 03:16:25,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:16:25,740 INFO L480 AbstractCegarLoop]: Abstraction has 62162 states and 90660 transitions. [2018-11-07 03:16:25,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:16:25,740 INFO L276 IsEmpty]: Start isEmpty. Operand 62162 states and 90660 transitions. [2018-11-07 03:16:25,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-11-07 03:16:25,783 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:16:25,783 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 03:16:25,784 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:16:25,784 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:16:25,784 INFO L82 PathProgramCache]: Analyzing trace with hash -314239728, now seen corresponding path program 1 times [2018-11-07 03:16:25,784 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:16:25,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:16:25,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:16:25,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:16:25,786 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:16:25,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:16:26,102 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:16:26,567 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 68 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 03:16:26,568 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:16:26,568 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:16:26,569 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 311 with the following transitions: [2018-11-07 03:16:26,572 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2855], [2857], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3336], [3341], [3343], [3344], [3355], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3425], [3429], [3440], [3451], [3455], [3459], [3463], [3467], [3471], [3475], [3479], [3483], [3487], [3498], [3502], [3506], [3517], [3521], [3524], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 03:16:26,661 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:16:26,661 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:16:36,141 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:16:36,243 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:16:36,245 INFO L272 AbstractInterpreter]: Visited 155 different actions 155 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 03:16:36,257 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:16:36,257 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:16:41,935 INFO L227 lantSequenceWeakener]: Weakened 287 states. On average, predicates are now at 71.34% of their original sizes. [2018-11-07 03:16:41,935 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:16:43,816 INFO L415 sIntCurrentIteration]: We unified 309 AI predicates to 309 [2018-11-07 03:16:43,816 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:16:43,817 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:16:43,818 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [6] total 16 [2018-11-07 03:16:43,818 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:16:43,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-07 03:16:43,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-07 03:16:43,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2018-11-07 03:16:43,819 INFO L87 Difference]: Start difference. First operand 62162 states and 90660 transitions. Second operand 12 states. Received shutdown request... [2018-11-07 03:18:36,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 03:18:36,741 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 03:18:36,747 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 03:18:36,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:18:36 BoogieIcfgContainer [2018-11-07 03:18:36,749 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 03:18:36,750 INFO L168 Benchmark]: Toolchain (without parser) took 216787.06 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 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 519.3 MB. Max. memory is 7.1 GB. [2018-11-07 03:18:36,752 INFO L168 Benchmark]: CDTParser took 0.65 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 03:18:36,753 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2555.60 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. [2018-11-07 03:18:36,754 INFO L168 Benchmark]: Boogie Procedure Inliner took 407.12 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 801.1 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. [2018-11-07 03:18:36,755 INFO L168 Benchmark]: Boogie Preprocessor took 303.74 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 36.8 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. [2018-11-07 03:18:36,763 INFO L168 Benchmark]: RCFGBuilder took 9348.05 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 177.7 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -357.8 kB). Peak memory consumption was 671.3 MB. Max. memory is 7.1 GB. [2018-11-07 03:18:36,764 INFO L168 Benchmark]: TraceAbstraction took 204166.90 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 3.6 GB in the end (delta: -1.3 GB). Peak memory consumption was 363.2 MB. Max. memory is 7.1 GB. [2018-11-07 03:18:36,776 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.65 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 2555.60 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 407.12 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 801.1 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 303.74 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 36.8 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9348.05 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 177.7 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -357.8 kB). Peak memory consumption was 671.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 204166.90 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 3.6 GB in the end (delta: -1.3 GB). Peak memory consumption was 363.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 114). Cancelled while BasicCegarLoop was constructing difference of abstraction (62162states) and FLOYD_HOARE automaton (currently 11 states, 12 states before enhancement),while ReachableStatesComputation was computing reachable states (3790 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 204.0s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 180.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2104 SDtfs, 16688 SDslu, 2445 SDs, 0 SdLazy, 30647 SolverSat, 7745 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 139.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 353 GetRequests, 314 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62162occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 9.6s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9969927806821008 AbsIntWeakeningRatio, 0.09061488673139159 AbsIntAvgWeakeningVarsNumRemoved, 27.36569579288026 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.9s AutomataMinimizationTime, 5 MinimizatonAttempts, 1471 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 912 NumberOfCodeBlocks, 912 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 906 ConstructedInterpolants, 0 QuantifiedInterpolants, 460833 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 209/321 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown