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/Problem10_label00_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 00:49:55,520 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 00:49:55,526 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 00:49:55,540 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 00:49:55,541 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 00:49:55,542 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 00:49:55,543 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 00:49:55,545 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 00:49:55,546 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 00:49:55,547 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 00:49:55,548 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 00:49:55,548 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 00:49:55,549 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 00:49:55,550 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 00:49:55,551 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 00:49:55,552 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 00:49:55,553 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 00:49:55,555 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 00:49:55,557 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 00:49:55,558 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 00:49:55,559 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 00:49:55,561 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 00:49:55,563 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 00:49:55,564 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 00:49:55,564 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 00:49:55,565 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 00:49:55,566 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 00:49:55,567 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 00:49:55,568 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 00:49:55,569 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 00:49:55,569 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 00:49:55,570 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 00:49:55,570 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 00:49:55,571 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 00:49:55,572 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 00:49:55,572 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 00:49:55,573 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 00:49:55,588 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 00:49:55,589 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 00:49:55,589 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 00:49:55,590 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 00:49:55,590 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 00:49:55,590 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 00:49:55,590 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 00:49:55,590 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 00:49:55,590 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 00:49:55,591 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 00:49:55,591 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 00:49:55,591 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 00:49:55,592 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 00:49:55,592 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 00:49:55,592 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 00:49:55,592 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 00:49:55,592 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 00:49:55,593 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 00:49:55,593 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 00:49:55,593 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 00:49:55,593 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 00:49:55,593 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 00:49:55,594 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 00:49:55,594 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 00:49:55,594 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 00:49:55,594 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 00:49:55,594 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 00:49:55,594 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 00:49:55,595 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 00:49:55,595 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 00:49:55,595 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 00:49:55,595 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 00:49:55,595 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 00:49:55,596 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 00:49:55,644 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 00:49:55,658 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 00:49:55,662 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 00:49:55,664 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 00:49:55,665 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 00:49:55,665 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label00_true-unreach-call.c [2018-10-24 00:49:55,728 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6fcba98e2/e573a76cd7b141acb9cedd6d4711192a/FLAGb9f78d20a [2018-10-24 00:49:56,309 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 00:49:56,311 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label00_true-unreach-call.c [2018-10-24 00:49:56,327 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6fcba98e2/e573a76cd7b141acb9cedd6d4711192a/FLAGb9f78d20a [2018-10-24 00:49:56,347 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6fcba98e2/e573a76cd7b141acb9cedd6d4711192a [2018-10-24 00:49:56,360 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 00:49:56,362 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 00:49:56,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 00:49:56,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 00:49:56,370 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 00:49:56,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:49:56" (1/1) ... [2018-10-24 00:49:56,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@387416d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:56, skipping insertion in model container [2018-10-24 00:49:56,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:49:56" (1/1) ... [2018-10-24 00:49:56,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 00:49:56,460 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 00:49:56,912 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 00:49:56,919 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 00:49:57,041 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 00:49:57,060 INFO L193 MainTranslator]: Completed translation [2018-10-24 00:49:57,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:57 WrapperNode [2018-10-24 00:49:57,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 00:49:57,062 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 00:49:57,062 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 00:49:57,062 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 00:49:57,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:57" (1/1) ... [2018-10-24 00:49:57,089 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:57" (1/1) ... [2018-10-24 00:49:57,254 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 00:49:57,254 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 00:49:57,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 00:49:57,255 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 00:49:57,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:57" (1/1) ... [2018-10-24 00:49:57,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:57" (1/1) ... [2018-10-24 00:49:57,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:57" (1/1) ... [2018-10-24 00:49:57,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:57" (1/1) ... [2018-10-24 00:49:57,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:57" (1/1) ... [2018-10-24 00:49:57,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:57" (1/1) ... [2018-10-24 00:49:57,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:57" (1/1) ... [2018-10-24 00:49:57,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 00:49:57,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 00:49:57,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 00:49:57,375 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 00:49:57,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:57" (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 00:49:57,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 00:49:57,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 00:49:57,451 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 00:49:57,452 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 00:49:57,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 00:49:57,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 00:49:57,452 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 00:49:57,452 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 00:50:01,017 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 00:50:01,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:50:01 BoogieIcfgContainer [2018-10-24 00:50:01,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 00:50:01,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 00:50:01,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 00:50:01,023 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 00:50:01,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:49:56" (1/3) ... [2018-10-24 00:50:01,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42707868 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:50:01, skipping insertion in model container [2018-10-24 00:50:01,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:49:57" (2/3) ... [2018-10-24 00:50:01,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42707868 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:50:01, skipping insertion in model container [2018-10-24 00:50:01,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:50:01" (3/3) ... [2018-10-24 00:50:01,027 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label00_true-unreach-call.c [2018-10-24 00:50:01,035 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 00:50:01,043 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 00:50:01,060 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 00:50:01,097 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 00:50:01,098 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 00:50:01,098 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 00:50:01,098 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 00:50:01,098 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 00:50:01,099 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 00:50:01,099 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 00:50:01,099 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 00:50:01,126 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-24 00:50:01,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-24 00:50:01,136 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:50:01,138 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 00:50:01,140 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:50:01,145 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:50:01,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1416877404, now seen corresponding path program 1 times [2018-10-24 00:50:01,148 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:50:01,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:50:01,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:50:01,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:50:01,204 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:50:01,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:50:01,725 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 00:50:01,845 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 00:50:01,847 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 00:50:01,848 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 00:50:01,848 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:50:01,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 00:50:01,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 00:50:01,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 00:50:01,878 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-10-24 00:50:03,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 00:50:03,910 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-10-24 00:50:03,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 00:50:03,914 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2018-10-24 00:50:03,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 00:50:03,932 INFO L225 Difference]: With dead ends: 574 [2018-10-24 00:50:03,933 INFO L226 Difference]: Without dead ends: 356 [2018-10-24 00:50:03,941 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 00:50:03,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-10-24 00:50:04,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-10-24 00:50:04,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-24 00:50:04,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-10-24 00:50:04,024 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 54 [2018-10-24 00:50:04,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 00:50:04,025 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-10-24 00:50:04,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 00:50:04,025 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-10-24 00:50:04,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-24 00:50:04,035 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:50:04,036 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:50:04,036 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:50:04,037 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:50:04,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1936663800, now seen corresponding path program 1 times [2018-10-24 00:50:04,037 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:50:04,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:50:04,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:50:04,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:50:04,039 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:50:04,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:50:04,396 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 00:50:04,397 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 00:50:04,397 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 00:50:04,397 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:50:04,399 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 00:50:04,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 00:50:04,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 00:50:04,400 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 4 states. [2018-10-24 00:50:06,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 00:50:06,398 INFO L93 Difference]: Finished difference Result 1282 states and 2328 transitions. [2018-10-24 00:50:06,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 00:50:06,405 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 174 [2018-10-24 00:50:06,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 00:50:06,421 INFO L225 Difference]: With dead ends: 1282 [2018-10-24 00:50:06,421 INFO L226 Difference]: Without dead ends: 932 [2018-10-24 00:50:06,432 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 00:50:06,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2018-10-24 00:50:06,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 932. [2018-10-24 00:50:06,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 932 states. [2018-10-24 00:50:06,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1469 transitions. [2018-10-24 00:50:06,529 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1469 transitions. Word has length 174 [2018-10-24 00:50:06,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 00:50:06,530 INFO L481 AbstractCegarLoop]: Abstraction has 932 states and 1469 transitions. [2018-10-24 00:50:06,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 00:50:06,530 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1469 transitions. [2018-10-24 00:50:06,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-24 00:50:06,545 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:50:06,545 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:50:06,545 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:50:06,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:50:06,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1693717853, now seen corresponding path program 1 times [2018-10-24 00:50:06,546 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:50:06,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:50:06,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:50:06,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:50:06,548 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:50:06,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:50:06,981 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 00:50:06,982 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 00:50:06,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 00:50:06,982 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:50:06,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 00:50:06,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 00:50:06,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 00:50:06,985 INFO L87 Difference]: Start difference. First operand 932 states and 1469 transitions. Second operand 6 states. [2018-10-24 00:50:11,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 00:50:11,628 INFO L93 Difference]: Finished difference Result 2162 states and 3509 transitions. [2018-10-24 00:50:11,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 00:50:11,629 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2018-10-24 00:50:11,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 00:50:11,641 INFO L225 Difference]: With dead ends: 2162 [2018-10-24 00:50:11,641 INFO L226 Difference]: Without dead ends: 1236 [2018-10-24 00:50:11,649 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 00:50:11,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2018-10-24 00:50:11,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 1216. [2018-10-24 00:50:11,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1216 states. [2018-10-24 00:50:11,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1766 transitions. [2018-10-24 00:50:11,696 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1766 transitions. Word has length 181 [2018-10-24 00:50:11,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 00:50:11,697 INFO L481 AbstractCegarLoop]: Abstraction has 1216 states and 1766 transitions. [2018-10-24 00:50:11,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 00:50:11,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1766 transitions. [2018-10-24 00:50:11,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-10-24 00:50:11,705 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:50:11,705 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 00:50:11,706 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:50:11,706 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:50:11,706 INFO L82 PathProgramCache]: Analyzing trace with hash -200482757, now seen corresponding path program 1 times [2018-10-24 00:50:11,706 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:50:11,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:50:11,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:50:11,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:50:11,708 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:50:11,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:50:11,960 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 94 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 00:50:11,961 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 00:50:11,961 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 00:50:11,962 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 252 with the following transitions: [2018-10-24 00:50:11,964 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [494], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [722], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 00:50:12,032 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 00:50:12,032 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 00:50:16,500 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 00:50:16,502 INFO L272 AbstractInterpreter]: Visited 132 different actions 132 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 00:50:16,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:50:16,547 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 00:50:20,352 INFO L232 lantSequenceWeakener]: Weakened 230 states. On average, predicates are now at 73.66% of their original sizes. [2018-10-24 00:50:20,352 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 00:50:27,568 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 00:50:27,569 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 00:50:27,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-10-24 00:50:27,569 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:50:27,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 00:50:27,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 00:50:27,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-24 00:50:27,570 INFO L87 Difference]: Start difference. First operand 1216 states and 1766 transitions. Second operand 11 states. [2018-10-24 00:50:41,924 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 00:51:19,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 00:51:19,494 INFO L93 Difference]: Finished difference Result 2575 states and 3779 transitions. [2018-10-24 00:51:19,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 00:51:19,495 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 251 [2018-10-24 00:51:19,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 00:51:19,508 INFO L225 Difference]: With dead ends: 2575 [2018-10-24 00:51:19,508 INFO L226 Difference]: Without dead ends: 1365 [2018-10-24 00:51:19,515 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 255 GetRequests, 196 SyntacticMatches, 45 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2018-10-24 00:51:19,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2018-10-24 00:51:19,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1360. [2018-10-24 00:51:19,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1360 states. [2018-10-24 00:51:19,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 1918 transitions. [2018-10-24 00:51:19,582 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 1918 transitions. Word has length 251 [2018-10-24 00:51:19,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 00:51:19,583 INFO L481 AbstractCegarLoop]: Abstraction has 1360 states and 1918 transitions. [2018-10-24 00:51:19,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-24 00:51:19,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 1918 transitions. [2018-10-24 00:51:19,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-10-24 00:51:19,590 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:51:19,590 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 00:51:19,591 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:51:19,591 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:51:19,591 INFO L82 PathProgramCache]: Analyzing trace with hash 509477615, now seen corresponding path program 1 times [2018-10-24 00:51:19,591 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:51:19,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:51:19,592 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:51:19,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:51:19,593 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:51:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:51:20,136 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 172 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 00:51:20,138 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 00:51:20,138 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 00:51:20,138 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 262 with the following transitions: [2018-10-24 00:51:20,139 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [722], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 00:51:20,152 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 00:51:20,153 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 00:51:22,113 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 00:51:44,061 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 00:51:44,062 INFO L272 AbstractInterpreter]: Visited 135 different actions 780 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 00:51:44,071 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:51:44,071 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 00:51:46,944 INFO L232 lantSequenceWeakener]: Weakened 74 states. On average, predicates are now at 74.69% of their original sizes. [2018-10-24 00:51:46,945 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 00:52:13,822 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 00:52:13,822 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 00:52:13,823 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [6] total 26 [2018-10-24 00:52:13,823 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:52:13,823 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-24 00:52:13,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-24 00:52:13,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2018-10-24 00:52:13,824 INFO L87 Difference]: Start difference. First operand 1360 states and 1918 transitions. Second operand 22 states. Received shutdown request... [2018-10-24 00:53:48,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-24 00:53:48,279 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 00:53:48,285 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 00:53:48,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:53:48 BoogieIcfgContainer [2018-10-24 00:53:48,285 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 00:53:48,286 INFO L168 Benchmark]: Toolchain (without parser) took 231925.69 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 919.8 MB. Max. memory is 7.1 GB. [2018-10-24 00:53:48,287 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 00:53:48,288 INFO L168 Benchmark]: CACSL2BoogieTranslator took 698.33 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-24 00:53:48,289 INFO L168 Benchmark]: Boogie Procedure Inliner took 192.57 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 698.4 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -780.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2018-10-24 00:53:48,290 INFO L168 Benchmark]: Boogie Preprocessor took 119.78 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 00:53:48,290 INFO L168 Benchmark]: RCFGBuilder took 3643.69 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 122.7 MB). Peak memory consumption was 122.7 MB. Max. memory is 7.1 GB. [2018-10-24 00:53:48,291 INFO L168 Benchmark]: TraceAbstraction took 227266.01 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 836.7 MB. Max. memory is 7.1 GB. [2018-10-24 00:53:48,298 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 698.33 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 192.57 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 698.4 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -780.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.78 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3643.69 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 122.7 MB). Peak memory consumption was 122.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 227266.01 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 836.7 MB. 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 (1360states) and FLOYD_HOARE automaton (currently 23 states, 22 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 29 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 227.1s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 155.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 861 SDtfs, 4305 SDslu, 531 SDs, 0 SdLazy, 4149 SolverSat, 843 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 79.2s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 543 GetRequests, 415 SyntacticMatches, 76 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 36.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1360occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 28.5s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9957090082409774 AbsIntWeakeningRatio, 0.10196078431372549 AbsIntAvgWeakeningVarsNumRemoved, 114.7078431372549 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 25 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 921 NumberOfCodeBlocks, 921 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 916 ConstructedInterpolants, 0 QuantifiedInterpolants, 627964 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 365/432 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown