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/Problem19_label20_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:27:58,333 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:27:58,338 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:27:58,349 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:27:58,350 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:27:58,351 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:27:58,352 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:27:58,354 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:27:58,355 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:27:58,356 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:27:58,357 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:27:58,357 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:27:58,358 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:27:58,359 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:27:58,360 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:27:58,361 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:27:58,362 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:27:58,363 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:27:58,365 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:27:58,367 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:27:58,368 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:27:58,369 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:27:58,371 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 22:27:58,377 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 22:27:58,378 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 22:27:58,379 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 22:27:58,379 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 22:27:58,380 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 [2018-10-24 22:27:58,396 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:27:58,397 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:27:58,397 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:27:58,398 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:27:58,398 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:27:58,398 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:27:58,398 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:27:58,399 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:27:58,399 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:27:58,399 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:27:58,399 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:27:58,399 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:27:58,400 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:27:58,400 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:27:58,400 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:27:58,400 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:27:58,401 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:27:58,401 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:27:58,401 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:27:58,401 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:27:58,401 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:27:58,402 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:27:58,402 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:27:58,402 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:27:58,402 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:27:58,402 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:27:58,403 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:27:58,403 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:27:58,403 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:27:58,403 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:27:58,403 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:27:58,404 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:27:58,404 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:27:58,404 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:27:58,446 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:27:58,459 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:27:58,464 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:27:58,466 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:27:58,466 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:27:58,467 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label20_true-unreach-call.c [2018-10-24 22:27:58,533 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/552cc7efa/f27854a653174c6ca07956ce09b91c32/FLAG14c137e87 [2018-10-24 22:27:59,367 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:27:59,368 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label20_true-unreach-call.c [2018-10-24 22:27:59,411 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/552cc7efa/f27854a653174c6ca07956ce09b91c32/FLAG14c137e87 [2018-10-24 22:27:59,426 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/552cc7efa/f27854a653174c6ca07956ce09b91c32 [2018-10-24 22:27:59,438 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:27:59,440 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:27:59,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:27:59,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:27:59,447 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:27:59,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:27:59" (1/1) ... [2018-10-24 22:27:59,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a6628d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:27:59, skipping insertion in model container [2018-10-24 22:27:59,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:27:59" (1/1) ... [2018-10-24 22:27:59,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:27:59,704 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:28:01,607 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:28:01,613 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:28:02,777 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:28:02,839 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:28:02,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:02 WrapperNode [2018-10-24 22:28:02,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:28:02,841 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:28:02,841 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:28:02,842 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:28:02,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:02" (1/1) ... [2018-10-24 22:28:02,943 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:02" (1/1) ... [2018-10-24 22:28:03,598 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:28:03,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:28:03,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:28:03,599 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:28:03,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:02" (1/1) ... [2018-10-24 22:28:03,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:02" (1/1) ... [2018-10-24 22:28:03,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:02" (1/1) ... [2018-10-24 22:28:03,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:02" (1/1) ... [2018-10-24 22:28:03,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:02" (1/1) ... [2018-10-24 22:28:03,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:02" (1/1) ... [2018-10-24 22:28:04,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:02" (1/1) ... [2018-10-24 22:28:04,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:28:04,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:28:04,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:28:04,214 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:28:04,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:02" (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 [2018-10-24 22:28:04,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:28:04,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:28:04,285 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-10-24 22:28:04,285 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-10-24 22:28:04,286 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-10-24 22:28:04,286 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-10-24 22:28:04,286 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 22:28:04,286 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 22:28:04,286 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 22:28:04,286 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 22:28:04,287 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 22:28:04,287 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 22:28:04,287 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:28:04,288 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:28:04,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:28:04,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:28:04,289 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:28:04,289 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:28:21,682 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:28:21,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:28:21 BoogieIcfgContainer [2018-10-24 22:28:21,683 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:28:21,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:28:21,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:28:21,689 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:28:21,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:27:59" (1/3) ... [2018-10-24 22:28:21,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e52e6c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:28:21, skipping insertion in model container [2018-10-24 22:28:21,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:02" (2/3) ... [2018-10-24 22:28:21,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e52e6c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:28:21, skipping insertion in model container [2018-10-24 22:28:21,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:28:21" (3/3) ... [2018-10-24 22:28:21,693 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label20_true-unreach-call.c [2018-10-24 22:28:21,703 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:28:21,714 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:28:21,733 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:28:21,802 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:28:21,803 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:28:21,803 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:28:21,803 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:28:21,803 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:28:21,803 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:28:21,803 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:28:21,804 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:28:21,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-10-24 22:28:21,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-24 22:28:21,885 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:28:21,887 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] [2018-10-24 22:28:21,890 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:28:21,897 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:28:21,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1661872980, now seen corresponding path program 1 times [2018-10-24 22:28:21,901 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:28:21,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:28:21,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:28:21,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:28:21,963 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:28:22,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:28:22,429 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:28:22,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:28:22,561 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:28:22,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 22:28:22,562 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:28:22,568 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:28:22,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:28:22,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:28:22,608 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-10-24 22:28:40,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:28:40,006 INFO L93 Difference]: Finished difference Result 4999 states and 9420 transitions. [2018-10-24 22:28:40,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:28:40,012 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2018-10-24 22:28:40,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:28:40,064 INFO L225 Difference]: With dead ends: 4999 [2018-10-24 22:28:40,064 INFO L226 Difference]: Without dead ends: 3219 [2018-10-24 22:28:40,081 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 [2018-10-24 22:28:40,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2018-10-24 22:28:40,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 3215. [2018-10-24 22:28:40,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2018-10-24 22:28:40,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5845 transitions. [2018-10-24 22:28:40,317 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5845 transitions. Word has length 50 [2018-10-24 22:28:40,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:28:40,318 INFO L481 AbstractCegarLoop]: Abstraction has 3215 states and 5845 transitions. [2018-10-24 22:28:40,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:28:40,319 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5845 transitions. [2018-10-24 22:28:40,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-24 22:28:40,329 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:28:40,331 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:28:40,332 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:28:40,333 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:28:40,333 INFO L82 PathProgramCache]: Analyzing trace with hash -425746485, now seen corresponding path program 1 times [2018-10-24 22:28:40,333 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:28:40,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:28:40,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:28:40,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:28:40,336 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:28:40,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:28:40,690 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:28:41,100 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:28:41,101 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:28:41,101 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:28:41,101 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:28:41,103 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:28:41,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:28:41,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:28:41,104 INFO L87 Difference]: Start difference. First operand 3215 states and 5845 transitions. Second operand 6 states. [2018-10-24 22:29:12,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:29:12,621 INFO L93 Difference]: Finished difference Result 10747 states and 19746 transitions. [2018-10-24 22:29:12,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 22:29:12,622 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2018-10-24 22:29:12,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:29:12,666 INFO L225 Difference]: With dead ends: 10747 [2018-10-24 22:29:12,667 INFO L226 Difference]: Without dead ends: 7538 [2018-10-24 22:29:12,678 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:29:12,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7538 states. [2018-10-24 22:29:12,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7538 to 7500. [2018-10-24 22:29:12,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7500 states. [2018-10-24 22:29:12,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7500 states to 7500 states and 12437 transitions. [2018-10-24 22:29:12,911 INFO L78 Accepts]: Start accepts. Automaton has 7500 states and 12437 transitions. Word has length 122 [2018-10-24 22:29:12,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:29:12,917 INFO L481 AbstractCegarLoop]: Abstraction has 7500 states and 12437 transitions. [2018-10-24 22:29:12,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:29:12,917 INFO L276 IsEmpty]: Start isEmpty. Operand 7500 states and 12437 transitions. [2018-10-24 22:29:12,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-24 22:29:12,927 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:29:12,930 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:29:12,930 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:29:12,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:29:12,931 INFO L82 PathProgramCache]: Analyzing trace with hash -314476791, now seen corresponding path program 1 times [2018-10-24 22:29:12,931 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:29:12,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:29:12,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:29:12,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:29:12,932 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:29:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:29:13,270 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:29:13,271 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:29:13,271 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:29:13,271 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:29:13,272 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:29:13,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:29:13,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:29:13,273 INFO L87 Difference]: Start difference. First operand 7500 states and 12437 transitions. Second operand 6 states. [2018-10-24 22:29:59,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:29:59,880 INFO L93 Difference]: Finished difference Result 27095 states and 45873 transitions. [2018-10-24 22:29:59,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 22:29:59,881 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2018-10-24 22:29:59,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:29:59,973 INFO L225 Difference]: With dead ends: 27095 [2018-10-24 22:29:59,974 INFO L226 Difference]: Without dead ends: 19601 [2018-10-24 22:30:00,021 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 22:30:00,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19601 states. [2018-10-24 22:30:00,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19601 to 19512. [2018-10-24 22:30:00,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19512 states. [2018-10-24 22:30:00,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19512 states to 19512 states and 28774 transitions. [2018-10-24 22:30:00,548 INFO L78 Accepts]: Start accepts. Automaton has 19512 states and 28774 transitions. Word has length 140 [2018-10-24 22:30:00,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:30:00,549 INFO L481 AbstractCegarLoop]: Abstraction has 19512 states and 28774 transitions. [2018-10-24 22:30:00,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:30:00,549 INFO L276 IsEmpty]: Start isEmpty. Operand 19512 states and 28774 transitions. [2018-10-24 22:30:00,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-10-24 22:30:00,555 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:30:00,555 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:30:00,556 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:30:00,556 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:30:00,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1766353928, now seen corresponding path program 1 times [2018-10-24 22:30:00,556 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:30:00,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:30:00,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:30:00,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:30:00,558 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:30:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:30:01,014 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:30:01,014 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:30:01,014 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 22:30:01,015 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:30:01,016 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 22:30:01,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 22:30:01,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 22:30:01,017 INFO L87 Difference]: Start difference. First operand 19512 states and 28774 transitions. Second operand 5 states. [2018-10-24 22:30:28,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:30:28,907 INFO L93 Difference]: Finished difference Result 59195 states and 92261 transitions. [2018-10-24 22:30:28,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 22:30:28,908 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2018-10-24 22:30:28,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:30:29,068 INFO L225 Difference]: With dead ends: 59195 [2018-10-24 22:30:29,069 INFO L226 Difference]: Without dead ends: 39689 [2018-10-24 22:30:29,134 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:30:29,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39689 states. [2018-10-24 22:30:30,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39689 to 38624. [2018-10-24 22:30:30,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38624 states. [2018-10-24 22:30:30,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38624 states to 38624 states and 54132 transitions. [2018-10-24 22:30:30,201 INFO L78 Accepts]: Start accepts. Automaton has 38624 states and 54132 transitions. Word has length 185 [2018-10-24 22:30:30,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:30:30,202 INFO L481 AbstractCegarLoop]: Abstraction has 38624 states and 54132 transitions. [2018-10-24 22:30:30,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 22:30:30,202 INFO L276 IsEmpty]: Start isEmpty. Operand 38624 states and 54132 transitions. [2018-10-24 22:30:30,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-10-24 22:30:30,212 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:30:30,212 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 22:30:30,212 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:30:30,213 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:30:30,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1259026054, now seen corresponding path program 1 times [2018-10-24 22:30:30,213 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:30:30,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:30:30,214 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:30:30,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:30:30,214 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:30:30,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:30:30,768 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 86 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 22:30:30,768 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:30:30,769 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:30:30,770 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 206 with the following transitions: [2018-10-24 22:30:30,775 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5458], [5466], [5474], [5482], [5490], [5498], [5506], [5514], [5522], [5526], [5528], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5745], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5781], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-10-24 22:30:30,873 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:30:30,873 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:30:33,914 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:30:33,916 INFO L272 AbstractInterpreter]: Visited 87 different actions 87 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 22:30:33,940 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:30:33,940 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:30:35,920 INFO L232 lantSequenceWeakener]: Weakened 197 states. On average, predicates are now at 75.71% of their original sizes. [2018-10-24 22:30:35,920 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:30:36,318 INFO L413 sIntCurrentIteration]: We have 204 unified AI predicates [2018-10-24 22:30:36,319 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:30:36,320 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:30:36,320 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 22:30:36,320 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:30:36,321 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 22:30:36,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 22:30:36,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 22:30:36,321 INFO L87 Difference]: Start difference. First operand 38624 states and 54132 transitions. Second operand 7 states. [2018-10-24 22:30:40,412 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 22:31:44,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:31:44,618 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:31:44,623 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:31:44,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:31:44 BoogieIcfgContainer [2018-10-24 22:31:44,623 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:31:44,624 INFO L168 Benchmark]: Toolchain (without parser) took 225185.20 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 3.6 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-24 22:31:44,625 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-10-24 22:31:44,626 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3399.19 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 391.1 MB). Peak memory consumption was 391.1 MB. Max. memory is 7.1 GB. [2018-10-24 22:31:44,627 INFO L168 Benchmark]: Boogie Procedure Inliner took 757.28 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 870.3 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 106.5 MB. Max. memory is 7.1 GB. [2018-10-24 22:31:44,628 INFO L168 Benchmark]: Boogie Preprocessor took 614.81 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 53.8 MB). Peak memory consumption was 53.8 MB. Max. memory is 7.1 GB. [2018-10-24 22:31:44,629 INFO L168 Benchmark]: RCFGBuilder took 17469.77 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 175.1 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 503.1 MB). Peak memory consumption was 678.2 MB. Max. memory is 7.1 GB. [2018-10-24 22:31:44,630 INFO L168 Benchmark]: TraceAbstraction took 202938.20 ms. Allocated memory was 2.6 GB in the beginning and 4.0 GB in the end (delta: 1.4 GB). Free memory was 1.7 GB in the beginning and 1.4 GB in the end (delta: 325.1 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-24 22:31:44,635 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 3399.19 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 391.1 MB). Peak memory consumption was 391.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 757.28 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 870.3 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 106.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 614.81 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 53.8 MB). Peak memory consumption was 53.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17469.77 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 175.1 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 503.1 MB). Peak memory consumption was 678.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 202938.20 ms. Allocated memory was 2.6 GB in the beginning and 4.0 GB in the end (delta: 1.4 GB). Free memory was 1.7 GB in the beginning and 1.4 GB in the end (delta: 325.1 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 145]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 145). Cancelled while BasicCegarLoop was constructing difference of abstraction (38624states) and FLOYD_HOARE automaton (currently 7 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (24360 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 202.8s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 192.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2939 SDtfs, 22753 SDslu, 3016 SDs, 0 SdLazy, 40161 SolverSat, 10413 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 148.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 240 GetRequests, 209 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38624occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9952488687782804 AbsIntWeakeningRatio, 0.1323529411764706 AbsIntAvgWeakeningVarsNumRemoved, 1041.7794117647059 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 1196 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 702 NumberOfCodeBlocks, 702 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 697 ConstructedInterpolants, 0 QuantifiedInterpolants, 451356 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 220/288 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown