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/Problem18_label01_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 22:53:18,219 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 22:53:18,221 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 22:53:18,234 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 22:53:18,235 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 22:53:18,236 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 22:53:18,237 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 22:53:18,239 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 22:53:18,241 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 22:53:18,242 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 22:53:18,243 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 22:53:18,243 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 22:53:18,244 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 22:53:18,245 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 22:53:18,246 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 22:53:18,247 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 22:53:18,248 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 22:53:18,250 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 22:53:18,252 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 22:53:18,253 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 22:53:18,254 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 22:53:18,256 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 22:53:18,258 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 22:53:18,267 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 [2018-10-23 22:53:18,284 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 22:53:18,284 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 22:53:18,285 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 22:53:18,286 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 22:53:18,286 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 22:53:18,286 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 22:53:18,286 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 22:53:18,286 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 22:53:18,287 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 22:53:18,287 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 22:53:18,287 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 22:53:18,287 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 22:53:18,288 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 22:53:18,288 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 22:53:18,288 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 22:53:18,289 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 22:53:18,289 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 22:53:18,289 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 22:53:18,289 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 22:53:18,290 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 22:53:18,290 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 22:53:18,290 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 22:53:18,290 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 22:53:18,290 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 22:53:18,291 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:53:18,291 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 22:53:18,291 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 22:53:18,291 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 22:53:18,291 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 22:53:18,292 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 22:53:18,292 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 22:53:18,292 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 22:53:18,292 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 22:53:18,292 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 22:53:18,339 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 22:53:18,353 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 22:53:18,358 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 22:53:18,360 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 22:53:18,360 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 22:53:18,361 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label01_false-unreach-call.c [2018-10-23 22:53:18,430 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c30b122f2/01c6f376de64465b87d208cc7d3f515f/FLAG4c7569261 [2018-10-23 22:53:19,273 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 22:53:19,274 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label01_false-unreach-call.c [2018-10-23 22:53:19,310 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c30b122f2/01c6f376de64465b87d208cc7d3f515f/FLAG4c7569261 [2018-10-23 22:53:19,326 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c30b122f2/01c6f376de64465b87d208cc7d3f515f [2018-10-23 22:53:19,337 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 22:53:19,339 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 22:53:19,340 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 22:53:19,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 22:53:19,345 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 22:53:19,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:53:19" (1/1) ... [2018-10-23 22:53:19,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bfcf448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:53:19, skipping insertion in model container [2018-10-23 22:53:19,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:53:19" (1/1) ... [2018-10-23 22:53:19,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 22:53:19,516 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 22:53:20,589 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:53:20,594 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 22:53:21,071 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:53:21,102 INFO L193 MainTranslator]: Completed translation [2018-10-23 22:53:21,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:53:21 WrapperNode [2018-10-23 22:53:21,103 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 22:53:21,105 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 22:53:21,105 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 22:53:21,105 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 22:53:21,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:53:21" (1/1) ... [2018-10-23 22:53:21,182 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:53:21" (1/1) ... [2018-10-23 22:53:21,605 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 22:53:21,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 22:53:21,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 22:53:21,606 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 22:53:21,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:53:21" (1/1) ... [2018-10-23 22:53:21,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:53:21" (1/1) ... [2018-10-23 22:53:21,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:53:21" (1/1) ... [2018-10-23 22:53:21,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:53:21" (1/1) ... [2018-10-23 22:53:21,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:53:21" (1/1) ... [2018-10-23 22:53:21,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:53:21" (1/1) ... [2018-10-23 22:53:21,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:53:21" (1/1) ... [2018-10-23 22:53:21,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 22:53:21,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 22:53:21,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 22:53:21,893 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 22:53:21,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:53:21" (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 [2018-10-23 22:53:21,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 22:53:21,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 22:53:21,970 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-23 22:53:21,970 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-23 22:53:21,971 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-23 22:53:21,971 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-23 22:53:21,971 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 22:53:21,971 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 22:53:21,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 22:53:21,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 22:53:21,972 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 22:53:21,972 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 22:53:30,840 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 22:53:30,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:53:30 BoogieIcfgContainer [2018-10-23 22:53:30,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 22:53:30,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 22:53:30,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 22:53:30,847 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 22:53:30,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:53:19" (1/3) ... [2018-10-23 22:53:30,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ae5eee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:53:30, skipping insertion in model container [2018-10-23 22:53:30,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:53:21" (2/3) ... [2018-10-23 22:53:30,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ae5eee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:53:30, skipping insertion in model container [2018-10-23 22:53:30,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:53:30" (3/3) ... [2018-10-23 22:53:30,850 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label01_false-unreach-call.c [2018-10-23 22:53:30,861 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 22:53:30,871 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 22:53:30,891 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 22:53:30,939 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 22:53:30,939 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 22:53:30,939 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 22:53:30,939 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 22:53:30,939 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 22:53:30,940 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 22:53:30,940 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 22:53:30,940 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 22:53:30,981 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-23 22:53:30,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-23 22:53:30,990 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:53:30,991 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] [2018-10-23 22:53:30,994 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:53:31,001 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:53:31,002 INFO L82 PathProgramCache]: Analyzing trace with hash -585368433, now seen corresponding path program 1 times [2018-10-23 22:53:31,005 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:53:31,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:53:31,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:53:31,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:53:31,067 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:53:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:53:31,431 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:53:31,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:53:31,560 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:53:31,560 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 22:53:31,561 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:53:31,569 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 22:53:31,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 22:53:31,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:53:31,590 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-23 22:53:38,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:53:38,704 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-23 22:53:38,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 22:53:38,706 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2018-10-23 22:53:38,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:53:38,742 INFO L225 Difference]: With dead ends: 2251 [2018-10-23 22:53:38,742 INFO L226 Difference]: Without dead ends: 1474 [2018-10-23 22:53:38,754 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 [2018-10-23 22:53:38,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-23 22:53:38,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-23 22:53:38,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-23 22:53:38,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-10-23 22:53:38,896 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 33 [2018-10-23 22:53:38,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:53:38,897 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-10-23 22:53:38,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 22:53:38,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-10-23 22:53:38,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-23 22:53:38,903 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:53:38,904 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:53:38,904 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:53:38,904 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:53:38,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1568281720, now seen corresponding path program 1 times [2018-10-23 22:53:38,905 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:53:38,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:53:38,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:53:38,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:53:38,906 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:53:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:53:39,212 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:53:39,213 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:53:39,213 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:53:39,213 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:53:39,215 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:53:39,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:53:39,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:53:39,216 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-10-23 22:53:54,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:53:54,441 INFO L93 Difference]: Finished difference Result 5789 states and 11192 transitions. [2018-10-23 22:53:54,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:53:54,451 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 107 [2018-10-23 22:53:54,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:53:54,486 INFO L225 Difference]: With dead ends: 5789 [2018-10-23 22:53:54,487 INFO L226 Difference]: Without dead ends: 4321 [2018-10-23 22:53:54,496 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 [2018-10-23 22:53:54,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4321 states. [2018-10-23 22:53:54,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4321 to 4295. [2018-10-23 22:53:54,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4295 states. [2018-10-23 22:53:54,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4295 states to 4295 states and 7032 transitions. [2018-10-23 22:53:54,640 INFO L78 Accepts]: Start accepts. Automaton has 4295 states and 7032 transitions. Word has length 107 [2018-10-23 22:53:54,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:53:54,642 INFO L481 AbstractCegarLoop]: Abstraction has 4295 states and 7032 transitions. [2018-10-23 22:53:54,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:53:54,642 INFO L276 IsEmpty]: Start isEmpty. Operand 4295 states and 7032 transitions. [2018-10-23 22:53:54,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-23 22:53:54,645 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:53:54,646 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:53:54,648 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:53:54,649 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:53:54,649 INFO L82 PathProgramCache]: Analyzing trace with hash -599106287, now seen corresponding path program 1 times [2018-10-23 22:53:54,649 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:53:54,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:53:54,652 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:53:54,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:53:54,652 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:53:54,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:53:54,832 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:53:54,832 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:53:54,832 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 22:53:54,832 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:53:54,833 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 22:53:54,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 22:53:54,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-23 22:53:54,834 INFO L87 Difference]: Start difference. First operand 4295 states and 7032 transitions. Second operand 5 states. [2018-10-23 22:54:06,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:54:06,726 INFO L93 Difference]: Finished difference Result 14335 states and 23470 transitions. [2018-10-23 22:54:06,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 22:54:06,727 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2018-10-23 22:54:06,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:54:06,783 INFO L225 Difference]: With dead ends: 14335 [2018-10-23 22:54:06,784 INFO L226 Difference]: Without dead ends: 10046 [2018-10-23 22:54:06,804 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:54:06,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10046 states. [2018-10-23 22:54:07,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10046 to 9940. [2018-10-23 22:54:07,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9940 states. [2018-10-23 22:54:07,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9940 states to 9940 states and 14580 transitions. [2018-10-23 22:54:07,080 INFO L78 Accepts]: Start accepts. Automaton has 9940 states and 14580 transitions. Word has length 110 [2018-10-23 22:54:07,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:54:07,081 INFO L481 AbstractCegarLoop]: Abstraction has 9940 states and 14580 transitions. [2018-10-23 22:54:07,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 22:54:07,082 INFO L276 IsEmpty]: Start isEmpty. Operand 9940 states and 14580 transitions. [2018-10-23 22:54:07,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-23 22:54:07,092 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:54:07,092 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:54:07,092 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:54:07,092 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:54:07,093 INFO L82 PathProgramCache]: Analyzing trace with hash 2057431661, now seen corresponding path program 1 times [2018-10-23 22:54:07,093 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:54:07,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:54:07,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:54:07,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:54:07,098 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:54:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:54:07,339 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:54:07,340 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:54:07,340 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 22:54:07,340 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:54:07,341 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 22:54:07,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 22:54:07,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:54:07,341 INFO L87 Difference]: Start difference. First operand 9940 states and 14580 transitions. Second operand 4 states. [2018-10-23 22:54:15,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:54:15,734 INFO L93 Difference]: Finished difference Result 29925 states and 46845 transitions. [2018-10-23 22:54:15,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 22:54:15,747 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2018-10-23 22:54:15,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:54:15,843 INFO L225 Difference]: With dead ends: 29925 [2018-10-23 22:54:15,843 INFO L226 Difference]: Without dead ends: 19991 [2018-10-23 22:54:15,898 INFO L605 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 [2018-10-23 22:54:15,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19991 states. [2018-10-23 22:54:16,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19991 to 19988. [2018-10-23 22:54:16,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19988 states. [2018-10-23 22:54:16,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19988 states to 19988 states and 29114 transitions. [2018-10-23 22:54:16,588 INFO L78 Accepts]: Start accepts. Automaton has 19988 states and 29114 transitions. Word has length 140 [2018-10-23 22:54:16,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:54:16,589 INFO L481 AbstractCegarLoop]: Abstraction has 19988 states and 29114 transitions. [2018-10-23 22:54:16,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 22:54:16,589 INFO L276 IsEmpty]: Start isEmpty. Operand 19988 states and 29114 transitions. [2018-10-23 22:54:16,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-23 22:54:16,601 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:54:16,602 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 22:54:16,602 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:54:16,602 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:54:16,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1604325120, now seen corresponding path program 1 times [2018-10-23 22:54:16,603 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:54:16,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:54:16,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:54:16,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:54:16,606 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:54:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:54:16,862 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:54:17,101 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 52 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-23 22:54:17,102 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:54:17,102 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:54:17,103 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 181 with the following transitions: [2018-10-23 22:54:17,106 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1787], [1789], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2144], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-23 22:54:17,187 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:54:17,188 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:54:19,144 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:54:19,146 INFO L272 AbstractInterpreter]: Visited 82 different actions 82 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-23 22:54:19,168 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:54:19,168 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:54:21,020 INFO L232 lantSequenceWeakener]: Weakened 172 states. On average, predicates are now at 77.78% of their original sizes. [2018-10-23 22:54:21,020 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:54:21,342 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:54:21,343 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:54:21,344 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-10-23 22:54:21,344 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:54:21,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 22:54:21,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 22:54:21,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-23 22:54:21,345 INFO L87 Difference]: Start difference. First operand 19988 states and 29114 transitions. Second operand 7 states. [2018-10-23 22:54:26,334 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:56:03,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:56:03,794 INFO L93 Difference]: Finished difference Result 40675 states and 59143 transitions. [2018-10-23 22:56:03,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:56:03,795 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 180 [2018-10-23 22:56:03,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:56:03,861 INFO L225 Difference]: With dead ends: 40675 [2018-10-23 22:56:03,862 INFO L226 Difference]: Without dead ends: 20693 [2018-10-23 22:56:03,901 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 180 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:56:03,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20693 states. [2018-10-23 22:56:04,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20693 to 20691. [2018-10-23 22:56:04,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20691 states. [2018-10-23 22:56:04,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20691 states to 20691 states and 29826 transitions. [2018-10-23 22:56:04,340 INFO L78 Accepts]: Start accepts. Automaton has 20691 states and 29826 transitions. Word has length 180 [2018-10-23 22:56:04,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:56:04,340 INFO L481 AbstractCegarLoop]: Abstraction has 20691 states and 29826 transitions. [2018-10-23 22:56:04,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 22:56:04,341 INFO L276 IsEmpty]: Start isEmpty. Operand 20691 states and 29826 transitions. [2018-10-23 22:56:04,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2018-10-23 22:56:04,349 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:56:04,350 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:56:04,351 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:56:04,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:56:04,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1253475010, now seen corresponding path program 1 times [2018-10-23 22:56:04,351 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:56:04,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:56:04,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:56:04,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:56:04,353 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:56:04,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:56:05,033 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-23 22:56:05,260 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-23 22:56:05,633 WARN L179 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-23 22:56:06,163 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 137 proven. 153 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-23 22:56:06,163 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:56:06,163 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:56:06,164 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 368 with the following transitions: [2018-10-23 22:56:06,164 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1787], [1789], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2144], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-23 22:56:06,173 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:56:06,173 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:56:19,072 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:56:19,072 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-23 22:56:19,076 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:56:19,077 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:56:24,358 INFO L232 lantSequenceWeakener]: Weakened 111 states. On average, predicates are now at 77.76% of their original sizes. [2018-10-23 22:56:24,358 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:56:50,920 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:56:50,921 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:56:50,921 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [11] total 24 [2018-10-23 22:56:50,921 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:56:50,922 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-23 22:56:50,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-23 22:56:50,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2018-10-23 22:56:50,923 INFO L87 Difference]: Start difference. First operand 20691 states and 29826 transitions. Second operand 15 states. Received shutdown request... [2018-10-23 22:56:55,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-23 22:56:55,859 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 22:56:55,863 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 22:56:55,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:56:55 BoogieIcfgContainer [2018-10-23 22:56:55,864 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 22:56:55,865 INFO L168 Benchmark]: Toolchain (without parser) took 216526.79 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -744.9 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-23 22:56:55,866 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-10-23 22:56:55,866 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1763.62 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-23 22:56:55,867 INFO L168 Benchmark]: Boogie Procedure Inliner took 500.66 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -935.8 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2018-10-23 22:56:55,869 INFO L168 Benchmark]: Boogie Preprocessor took 286.22 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2018-10-23 22:56:55,869 INFO L168 Benchmark]: RCFGBuilder took 8949.95 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 501.9 MB). Peak memory consumption was 501.9 MB. Max. memory is 7.1 GB. [2018-10-23 22:56:55,870 INFO L168 Benchmark]: TraceAbstraction took 205020.82 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 2.2 GB in the end (delta: -473.8 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-23 22:56:55,875 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 1763.62 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 500.66 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -935.8 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 286.22 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8949.95 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 501.9 MB). Peak memory consumption was 501.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 205020.82 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 2.2 GB in the end (delta: -473.8 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 87). Cancelled while BasicCegarLoop was constructing difference of abstraction (20691states) and FLOYD_HOARE automaton (currently 9 states, 15 states before enhancement),while ReachableStatesComputation was computing reachable states (20 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 204.9s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 150.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2615 SDtfs, 9694 SDslu, 887 SDs, 0 SdLazy, 22306 SolverSat, 5414 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 97.4s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 579 GetRequests, 503 SyntacticMatches, 37 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 27.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20691occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 14.9s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9955158888445685 AbsIntWeakeningRatio, 0.10642201834862386 AbsIntAvgWeakeningVarsNumRemoved, 307.8146788990826 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 137 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 937 NumberOfCodeBlocks, 937 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 931 ConstructedInterpolants, 0 QuantifiedInterpolants, 1247619 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 277/495 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown