java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label57_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 22:38:06,854 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:38:06,856 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:38:06,868 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:38:06,868 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:38:06,870 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:38:06,871 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:38:06,873 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:38:06,875 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:38:06,876 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:38:06,877 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:38:06,877 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:38:06,878 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:38:06,880 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:38:06,881 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:38:06,882 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:38:06,883 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:38:06,885 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:38:06,887 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:38:06,889 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:38:06,890 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:38:06,892 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:38:06,895 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-26 22:38:06,906 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-26 22:38:06,923 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:38:06,923 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:38:06,924 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:38:06,925 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 22:38:06,925 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 22:38:06,925 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 22:38:06,925 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 22:38:06,925 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 22:38:06,926 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-26 22:38:06,926 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 22:38:06,926 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 22:38:06,926 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 22:38:06,927 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:38:06,927 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 22:38:06,927 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:38:06,928 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:38:06,928 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:38:06,928 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:38:06,928 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:38:06,928 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:38:06,929 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:38:06,929 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:38:06,929 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:38:06,929 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:38:06,929 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:38:06,930 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:38:06,930 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:38:06,930 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:38:06,930 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 22:38:06,930 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:38:06,931 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 22:38:06,931 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 22:38:06,931 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 22:38:06,931 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-26 22:38:06,987 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:38:07,000 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:38:07,004 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:38:07,006 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:38:07,006 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:38:07,007 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label57_false-unreach-call_false-termination.c [2018-10-26 22:38:07,067 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/aebe98564/55a47086e47747988c161dbfe7e3c85e/FLAGf0b6611aa [2018-10-26 22:38:07,636 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:38:07,637 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label57_false-unreach-call_false-termination.c [2018-10-26 22:38:07,654 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/aebe98564/55a47086e47747988c161dbfe7e3c85e/FLAGf0b6611aa [2018-10-26 22:38:07,673 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/aebe98564/55a47086e47747988c161dbfe7e3c85e [2018-10-26 22:38:07,684 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:38:07,686 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 22:38:07,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:38:07,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:38:07,691 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:38:07,692 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:38:07" (1/1) ... [2018-10-26 22:38:07,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f637f1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:07, skipping insertion in model container [2018-10-26 22:38:07,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:38:07" (1/1) ... [2018-10-26 22:38:07,705 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:38:07,778 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:38:08,280 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:38:08,285 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:38:08,420 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:38:08,437 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:38:08,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:08 WrapperNode [2018-10-26 22:38:08,437 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:38:08,438 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 22:38:08,438 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 22:38:08,439 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 22:38:08,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:08" (1/1) ... [2018-10-26 22:38:08,468 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:08" (1/1) ... [2018-10-26 22:38:08,634 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 22:38:08,634 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:38:08,635 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:38:08,635 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:38:08,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:08" (1/1) ... [2018-10-26 22:38:08,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:08" (1/1) ... [2018-10-26 22:38:08,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:08" (1/1) ... [2018-10-26 22:38:08,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:08" (1/1) ... [2018-10-26 22:38:08,693 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:08" (1/1) ... [2018-10-26 22:38:08,711 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:08" (1/1) ... [2018-10-26 22:38:08,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:08" (1/1) ... [2018-10-26 22:38:08,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:38:08,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:38:08,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:38:08,731 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:38:08,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:38:08,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 22:38:08,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 22:38:08,804 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-26 22:38:08,805 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-26 22:38:08,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:38:08,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:38:08,805 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 22:38:08,805 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 22:38:12,195 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:38:12,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:38:12 BoogieIcfgContainer [2018-10-26 22:38:12,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:38:12,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:38:12,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:38:12,202 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:38:12,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:38:07" (1/3) ... [2018-10-26 22:38:12,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2577e99b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:38:12, skipping insertion in model container [2018-10-26 22:38:12,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:08" (2/3) ... [2018-10-26 22:38:12,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2577e99b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:38:12, skipping insertion in model container [2018-10-26 22:38:12,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:38:12" (3/3) ... [2018-10-26 22:38:12,207 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label57_false-unreach-call_false-termination.c [2018-10-26 22:38:12,215 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:38:12,223 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:38:12,241 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:38:12,284 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:38:12,284 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:38:12,285 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:38:12,285 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:38:12,285 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:38:12,286 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:38:12,286 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:38:12,286 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:38:12,312 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-10-26 22:38:12,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-26 22:38:12,323 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:38:12,324 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:38:12,327 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:38:12,335 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:38:12,335 INFO L82 PathProgramCache]: Analyzing trace with hash 2067767141, now seen corresponding path program 1 times [2018-10-26 22:38:12,338 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 22:38:12,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:38:12,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:38:12,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:38:12,398 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 22:38:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:38:12,993 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-26 22:38:13,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:38:13,123 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:38:13,124 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:38:13,124 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 22:38:13,130 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 22:38:13,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 22:38:13,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:38:13,152 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 3 states. [2018-10-26 22:38:14,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:38:14,662 INFO L93 Difference]: Finished difference Result 550 states and 941 transitions. [2018-10-26 22:38:14,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 22:38:14,666 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2018-10-26 22:38:14,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:38:14,685 INFO L225 Difference]: With dead ends: 550 [2018-10-26 22:38:14,685 INFO L226 Difference]: Without dead ends: 340 [2018-10-26 22:38:14,697 INFO L605 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 [2018-10-26 22:38:14,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-10-26 22:38:14,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-10-26 22:38:14,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-10-26 22:38:14,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 571 transitions. [2018-10-26 22:38:14,811 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 571 transitions. Word has length 85 [2018-10-26 22:38:14,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:38:14,812 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 571 transitions. [2018-10-26 22:38:14,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 22:38:14,813 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 571 transitions. [2018-10-26 22:38:14,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-26 22:38:14,819 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:38:14,819 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 22:38:14,819 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:38:14,820 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:38:14,820 INFO L82 PathProgramCache]: Analyzing trace with hash -795068642, now seen corresponding path program 1 times [2018-10-26 22:38:14,820 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 22:38:14,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:38:14,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:38:14,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:38:14,822 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 22:38:14,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:38:15,093 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:38:15,094 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:38:15,094 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 22:38:15,094 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 22:38:15,096 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:38:15,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:38:15,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:38:15,097 INFO L87 Difference]: Start difference. First operand 340 states and 571 transitions. Second operand 4 states. [2018-10-26 22:38:16,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:38:16,849 INFO L93 Difference]: Finished difference Result 1218 states and 2175 transitions. [2018-10-26 22:38:16,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:38:16,851 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2018-10-26 22:38:16,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:38:16,862 INFO L225 Difference]: With dead ends: 1218 [2018-10-26 22:38:16,862 INFO L226 Difference]: Without dead ends: 884 [2018-10-26 22:38:16,867 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:38:16,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2018-10-26 22:38:16,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 884. [2018-10-26 22:38:16,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 884 states. [2018-10-26 22:38:16,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1407 transitions. [2018-10-26 22:38:16,919 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1407 transitions. Word has length 103 [2018-10-26 22:38:16,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:38:16,920 INFO L481 AbstractCegarLoop]: Abstraction has 884 states and 1407 transitions. [2018-10-26 22:38:16,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:38:16,921 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1407 transitions. [2018-10-26 22:38:16,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-26 22:38:16,927 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:38:16,927 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:38:16,927 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:38:16,928 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:38:16,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1115310826, now seen corresponding path program 1 times [2018-10-26 22:38:16,928 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 22:38:16,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:38:16,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:38:16,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:38:16,930 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 22:38:16,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:38:17,183 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:38:17,184 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:38:17,185 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:38:17,185 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 22:38:17,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 22:38:17,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 22:38:17,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:38:17,188 INFO L87 Difference]: Start difference. First operand 884 states and 1407 transitions. Second operand 3 states. [2018-10-26 22:38:19,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:38:19,570 INFO L93 Difference]: Finished difference Result 2578 states and 4238 transitions. [2018-10-26 22:38:19,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 22:38:19,571 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 120 [2018-10-26 22:38:19,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:38:19,589 INFO L225 Difference]: With dead ends: 2578 [2018-10-26 22:38:19,589 INFO L226 Difference]: Without dead ends: 1700 [2018-10-26 22:38:19,598 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:38:19,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2018-10-26 22:38:19,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 1700. [2018-10-26 22:38:19,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1700 states. [2018-10-26 22:38:19,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1700 states to 1700 states and 2537 transitions. [2018-10-26 22:38:19,684 INFO L78 Accepts]: Start accepts. Automaton has 1700 states and 2537 transitions. Word has length 120 [2018-10-26 22:38:19,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:38:19,685 INFO L481 AbstractCegarLoop]: Abstraction has 1700 states and 2537 transitions. [2018-10-26 22:38:19,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 22:38:19,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1700 states and 2537 transitions. [2018-10-26 22:38:19,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-26 22:38:19,699 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:38:19,699 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, 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] [2018-10-26 22:38:19,699 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:38:19,700 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:38:19,700 INFO L82 PathProgramCache]: Analyzing trace with hash 2052687454, now seen corresponding path program 1 times [2018-10-26 22:38:19,700 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 22:38:19,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:38:19,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:38:19,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:38:19,702 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 22:38:19,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:38:19,989 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:38:19,989 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:38:19,989 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 22:38:19,989 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 22:38:19,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 22:38:19,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 22:38:19,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 22:38:19,991 INFO L87 Difference]: Start difference. First operand 1700 states and 2537 transitions. Second operand 6 states. [2018-10-26 22:38:21,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:38:21,436 INFO L93 Difference]: Finished difference Result 4353 states and 6550 transitions. [2018-10-26 22:38:21,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 22:38:21,437 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2018-10-26 22:38:21,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:38:21,456 INFO L225 Difference]: With dead ends: 4353 [2018-10-26 22:38:21,456 INFO L226 Difference]: Without dead ends: 2659 [2018-10-26 22:38:21,468 INFO L605 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 [2018-10-26 22:38:21,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2659 states. [2018-10-26 22:38:21,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2659 to 2619. [2018-10-26 22:38:21,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2619 states. [2018-10-26 22:38:21,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 3469 transitions. [2018-10-26 22:38:21,564 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 3469 transitions. Word has length 156 [2018-10-26 22:38:21,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:38:21,565 INFO L481 AbstractCegarLoop]: Abstraction has 2619 states and 3469 transitions. [2018-10-26 22:38:21,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 22:38:21,566 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 3469 transitions. [2018-10-26 22:38:21,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-26 22:38:21,576 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:38:21,577 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:38:21,577 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:38:21,577 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:38:21,577 INFO L82 PathProgramCache]: Analyzing trace with hash -533953783, now seen corresponding path program 1 times [2018-10-26 22:38:21,578 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 22:38:21,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:38:21,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:38:21,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:38:21,580 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 22:38:21,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:38:21,873 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 7 [2018-10-26 22:38:21,934 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 81 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-26 22:38:21,934 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:38:21,935 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 22:38:21,935 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 173 with the following transitions: [2018-10-26 22:38:21,937 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [33], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [253], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [317], [319], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-26 22:38:21,998 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 22:38:21,998 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 22:38:30,590 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 22:38:30,591 INFO L272 AbstractInterpreter]: Visited 68 different actions 68 times. Never merged. Never widened. Never found a fixpoint. Largest state had 42 variables. [2018-10-26 22:38:30,602 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:38:30,602 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 22:38:34,172 INFO L227 lantSequenceWeakener]: Weakened 140 states. On average, predicates are now at 79.87% of their original sizes. [2018-10-26 22:38:34,173 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 22:38:35,335 INFO L415 sIntCurrentIteration]: We unified 171 AI predicates to 171 [2018-10-26 22:38:35,335 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 22:38:35,336 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 22:38:35,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [6] total 16 [2018-10-26 22:38:35,337 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 22:38:35,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-26 22:38:35,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-26 22:38:35,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-10-26 22:38:35,338 INFO L87 Difference]: Start difference. First operand 2619 states and 3469 transitions. Second operand 12 states. [2018-10-26 22:38:46,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:38:46,198 INFO L93 Difference]: Finished difference Result 5293 states and 7050 transitions. [2018-10-26 22:38:46,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-26 22:38:46,198 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 172 [2018-10-26 22:38:46,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:38:46,214 INFO L225 Difference]: With dead ends: 5293 [2018-10-26 22:38:46,214 INFO L226 Difference]: Without dead ends: 2680 [2018-10-26 22:38:46,225 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 177 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2018-10-26 22:38:46,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2018-10-26 22:38:46,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 2680. [2018-10-26 22:38:46,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2680 states. [2018-10-26 22:38:46,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2680 states to 2680 states and 3539 transitions. [2018-10-26 22:38:46,305 INFO L78 Accepts]: Start accepts. Automaton has 2680 states and 3539 transitions. Word has length 172 [2018-10-26 22:38:46,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:38:46,306 INFO L481 AbstractCegarLoop]: Abstraction has 2680 states and 3539 transitions. [2018-10-26 22:38:46,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-26 22:38:46,306 INFO L276 IsEmpty]: Start isEmpty. Operand 2680 states and 3539 transitions. [2018-10-26 22:38:46,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-26 22:38:46,324 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:38:46,324 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:38:46,325 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:38:46,325 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:38:46,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1848130412, now seen corresponding path program 1 times [2018-10-26 22:38:46,325 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 22:38:46,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:38:46,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:38:46,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:38:46,329 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 22:38:46,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:38:46,849 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 99 proven. 15 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-26 22:38:46,849 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:38:46,850 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 22:38:46,850 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 182 with the following transitions: [2018-10-26 22:38:46,850 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [10], [14], [18], [22], [26], [30], [33], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [253], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [317], [319], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-26 22:38:46,856 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 22:38:46,856 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 22:39:05,495 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 22:39:05,495 INFO L272 AbstractInterpreter]: Visited 90 different actions 156 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-10-26 22:39:05,505 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:39:05,505 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 22:39:09,335 INFO L227 lantSequenceWeakener]: Weakened 142 states. On average, predicates are now at 80.26% of their original sizes. [2018-10-26 22:39:09,336 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 22:41:04,309 INFO L415 sIntCurrentIteration]: We unified 180 AI predicates to 180 [2018-10-26 22:41:04,310 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 22:41:04,310 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 22:41:04,310 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [6] total 20 [2018-10-26 22:41:04,310 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 22:41:04,311 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-26 22:41:04,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-26 22:41:04,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2018-10-26 22:41:04,312 INFO L87 Difference]: Start difference. First operand 2680 states and 3539 transitions. Second operand 16 states. Received shutdown request... [2018-10-26 22:42:30,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-26 22:42:30,983 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 22:42:30,989 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 22:42:30,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 10:42:30 BoogieIcfgContainer [2018-10-26 22:42:30,990 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 22:42:30,991 INFO L168 Benchmark]: Toolchain (without parser) took 263305.99 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -864.4 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-26 22:42:30,992 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. [2018-10-26 22:42:30,993 INFO L168 Benchmark]: CACSL2BoogieTranslator took 750.54 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. [2018-10-26 22:42:30,993 INFO L168 Benchmark]: Boogie Procedure Inliner took 195.95 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -819.3 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2018-10-26 22:42:30,994 INFO L168 Benchmark]: Boogie Preprocessor took 96.27 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 22:42:30,995 INFO L168 Benchmark]: RCFGBuilder took 3464.59 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: 104.4 MB). Peak memory consumption was 104.4 MB. Max. memory is 7.1 GB. [2018-10-26 22:42:30,996 INFO L168 Benchmark]: TraceAbstraction took 258793.19 ms. Allocated memory was 2.3 GB in the beginning and 3.5 GB in the end (delta: 1.3 GB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -191.8 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-26 22:42:31,001 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 750.54 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 195.95 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -819.3 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 96.27 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3464.59 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: 104.4 MB). Peak memory consumption was 104.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 258793.19 ms. Allocated memory was 2.3 GB in the beginning and 3.5 GB in the end (delta: 1.3 GB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -191.8 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 410]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 410). Cancelled while BasicCegarLoop was constructing difference of abstraction (2680states) and FLOYD_HOARE automaton (currently 19 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (451 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 208 locations, 1 error locations. TIMEOUT Result, 258.7s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 104.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1150 SDtfs, 1939 SDslu, 436 SDs, 0 SdLazy, 3193 SolverSat, 668 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 52.2s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 391 GetRequests, 260 SyntacticMatches, 80 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 126.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2680occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 27.3s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9948893322877068 AbsIntWeakeningRatio, 0.21652421652421652 AbsIntAvgWeakeningVarsNumRemoved, 2360.880341880342 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 40 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 817 NumberOfCodeBlocks, 817 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 811 ConstructedInterpolants, 0 QuantifiedInterpolants, 321717 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 307/333 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown