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/Problem16_label58_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:04:06,575 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:04:06,577 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:04:06,589 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:04:06,590 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:04:06,591 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:04:06,592 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:04:06,594 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:04:06,596 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:04:06,596 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:04:06,598 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:04:06,598 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:04:06,599 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:04:06,600 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:04:06,601 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:04:06,602 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:04:06,603 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:04:06,604 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:04:06,606 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:04:06,608 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:04:06,609 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:04:06,610 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:04:06,615 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 22:04:06,624 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 22:04:06,624 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 22:04:06,625 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 22:04:06,626 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 22:04:06,626 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 22:04:06,641 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:04:06,642 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:04:06,643 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:04:06,643 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:04:06,643 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:04:06,643 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:04:06,643 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:04:06,644 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:04:06,644 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:04:06,644 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:04:06,644 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:04:06,644 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:04:06,646 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:04:06,646 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:04:06,647 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:04:06,647 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:04:06,647 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:04:06,647 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:04:06,647 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:04:06,648 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:04:06,649 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:04:06,649 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:04:06,650 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:04:06,650 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:04:06,650 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:04:06,650 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:04:06,650 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:04:06,651 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:04:06,651 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:04:06,651 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:04:06,651 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:04:06,651 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:04:06,652 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:04:06,652 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:04:06,704 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:04:06,723 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:04:06,728 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:04:06,730 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:04:06,731 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:04:06,732 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label58_true-unreach-call.c [2018-10-24 22:04:06,807 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e052c05d4/41f62bbba4be46f78cdc0bd8a217bf53/FLAG4acc1c1e1 [2018-10-24 22:04:07,486 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:04:07,487 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label58_true-unreach-call.c [2018-10-24 22:04:07,512 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e052c05d4/41f62bbba4be46f78cdc0bd8a217bf53/FLAG4acc1c1e1 [2018-10-24 22:04:07,534 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e052c05d4/41f62bbba4be46f78cdc0bd8a217bf53 [2018-10-24 22:04:07,547 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:04:07,550 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:04:07,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:04:07,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:04:07,560 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:04:07,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:04:07" (1/1) ... [2018-10-24 22:04:07,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6351e815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:07, skipping insertion in model container [2018-10-24 22:04:07,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:04:07" (1/1) ... [2018-10-24 22:04:07,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:04:07,689 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:04:08,439 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:04:08,445 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:04:08,724 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:04:08,746 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:04:08,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:08 WrapperNode [2018-10-24 22:04:08,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:04:08,748 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:04:08,749 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:04:08,749 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:04:08,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:08" (1/1) ... [2018-10-24 22:04:08,801 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:08" (1/1) ... [2018-10-24 22:04:09,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:04:09,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:04:09,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:04:09,072 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:04:09,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:08" (1/1) ... [2018-10-24 22:04:09,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:08" (1/1) ... [2018-10-24 22:04:09,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:08" (1/1) ... [2018-10-24 22:04:09,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:08" (1/1) ... [2018-10-24 22:04:09,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:08" (1/1) ... [2018-10-24 22:04:09,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:08" (1/1) ... [2018-10-24 22:04:09,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:08" (1/1) ... [2018-10-24 22:04:09,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:04:09,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:04:09,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:04:09,294 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:04:09,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:04:09,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:04:09,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:04:09,368 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 22:04:09,368 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 22:04:09,369 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:04:09,369 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:04:09,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:04:09,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:04:09,369 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:04:09,370 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:04:15,250 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:04:15,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:04:15 BoogieIcfgContainer [2018-10-24 22:04:15,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:04:15,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:04:15,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:04:15,257 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:04:15,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:04:07" (1/3) ... [2018-10-24 22:04:15,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ad3a451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:04:15, skipping insertion in model container [2018-10-24 22:04:15,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:08" (2/3) ... [2018-10-24 22:04:15,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ad3a451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:04:15, skipping insertion in model container [2018-10-24 22:04:15,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:04:15" (3/3) ... [2018-10-24 22:04:15,261 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label58_true-unreach-call.c [2018-10-24 22:04:15,271 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:04:15,280 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:04:15,299 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:04:15,340 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:04:15,341 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:04:15,341 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:04:15,341 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:04:15,341 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:04:15,341 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:04:15,342 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:04:15,342 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:04:15,374 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-24 22:04:15,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-24 22:04:15,384 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:04:15,385 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:04:15,387 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:04:15,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:04:15,394 INFO L82 PathProgramCache]: Analyzing trace with hash -484315148, now seen corresponding path program 1 times [2018-10-24 22:04:15,397 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:04:15,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:04:15,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:04:15,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:04:15,446 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:04:15,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:04:15,878 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:04:15,994 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 22:04:15,997 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:04:15,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 22:04:15,998 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:04:16,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:04:16,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:04:16,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:04:16,029 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-10-24 22:04:19,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:04:19,581 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-10-24 22:04:19,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:04:19,584 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2018-10-24 22:04:19,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:04:19,626 INFO L225 Difference]: With dead ends: 1156 [2018-10-24 22:04:19,627 INFO L226 Difference]: Without dead ends: 744 [2018-10-24 22:04:19,641 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 22:04:19,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-10-24 22:04:19,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-10-24 22:04:19,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-24 22:04:19,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1353 transitions. [2018-10-24 22:04:19,825 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1353 transitions. Word has length 58 [2018-10-24 22:04:19,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:04:19,826 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1353 transitions. [2018-10-24 22:04:19,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:04:19,827 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1353 transitions. [2018-10-24 22:04:19,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-10-24 22:04:19,842 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:04:19,843 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:04:19,843 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:04:19,843 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:04:19,843 INFO L82 PathProgramCache]: Analyzing trace with hash 2051883855, now seen corresponding path program 1 times [2018-10-24 22:04:19,844 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:04:19,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:04:19,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:04:19,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:04:19,846 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:04:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:04:20,409 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:04:20,409 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:04:20,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:04:20,409 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:04:20,412 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:04:20,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:04:20,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:04:20,412 INFO L87 Difference]: Start difference. First operand 744 states and 1353 transitions. Second operand 6 states. [2018-10-24 22:04:29,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:04:29,707 INFO L93 Difference]: Finished difference Result 2184 states and 3997 transitions. [2018-10-24 22:04:29,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:04:29,710 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2018-10-24 22:04:29,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:04:29,721 INFO L225 Difference]: With dead ends: 2184 [2018-10-24 22:04:29,721 INFO L226 Difference]: Without dead ends: 1446 [2018-10-24 22:04:29,727 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:04:29,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2018-10-24 22:04:29,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1425. [2018-10-24 22:04:29,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2018-10-24 22:04:29,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2267 transitions. [2018-10-24 22:04:29,793 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2267 transitions. Word has length 151 [2018-10-24 22:04:29,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:04:29,794 INFO L481 AbstractCegarLoop]: Abstraction has 1425 states and 2267 transitions. [2018-10-24 22:04:29,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:04:29,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2267 transitions. [2018-10-24 22:04:29,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-10-24 22:04:29,805 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:04:29,805 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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 22:04:29,805 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:04:29,806 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:04:29,806 INFO L82 PathProgramCache]: Analyzing trace with hash -593361768, now seen corresponding path program 1 times [2018-10-24 22:04:29,806 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:04:29,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:04:29,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:04:29,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:04:29,808 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:04:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:04:30,139 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 102 proven. 88 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 22:04:30,140 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:04:30,140 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:04:30,141 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 263 with the following transitions: [2018-10-24 22:04:30,143 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [543], [545], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-24 22:04:30,232 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:04:30,233 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:04:32,683 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:04:32,685 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 22:04:32,714 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:04:32,714 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:04:34,996 INFO L232 lantSequenceWeakener]: Weakened 254 states. On average, predicates are now at 78.07% of their original sizes. [2018-10-24 22:04:34,997 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:04:35,248 INFO L413 sIntCurrentIteration]: We have 261 unified AI predicates [2018-10-24 22:04:35,248 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:04:35,249 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:04:35,249 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 22:04:35,249 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:04:35,250 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 22:04:35,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 22:04:35,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 22:04:35,251 INFO L87 Difference]: Start difference. First operand 1425 states and 2267 transitions. Second operand 7 states. [2018-10-24 22:04:37,520 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:05:23,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:05:23,423 INFO L93 Difference]: Finished difference Result 3184 states and 5088 transitions. [2018-10-24 22:05:23,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:05:23,423 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 262 [2018-10-24 22:05:23,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:05:23,433 INFO L225 Difference]: With dead ends: 3184 [2018-10-24 22:05:23,433 INFO L226 Difference]: Without dead ends: 1765 [2018-10-24 22:05:23,437 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 262 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:05:23,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1765 states. [2018-10-24 22:05:23,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1765 to 1763. [2018-10-24 22:05:23,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1763 states. [2018-10-24 22:05:23,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2612 transitions. [2018-10-24 22:05:23,487 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2612 transitions. Word has length 262 [2018-10-24 22:05:23,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:05:23,488 INFO L481 AbstractCegarLoop]: Abstraction has 1763 states and 2612 transitions. [2018-10-24 22:05:23,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 22:05:23,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2612 transitions. [2018-10-24 22:05:23,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-10-24 22:05:23,494 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:05:23,494 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 22:05:23,495 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:05:23,495 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:05:23,495 INFO L82 PathProgramCache]: Analyzing trace with hash 260849530, now seen corresponding path program 1 times [2018-10-24 22:05:23,495 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:05:23,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:05:23,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:05:23,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:05:23,497 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:05:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:05:23,891 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:05:24,402 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 159 proven. 197 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-10-24 22:05:24,403 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:05:24,403 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:05:24,403 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 355 with the following transitions: [2018-10-24 22:05:24,403 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [543], [545], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-24 22:05:24,412 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:05:24,413 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:05:26,688 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:05:38,378 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:05:38,378 INFO L272 AbstractInterpreter]: Visited 120 different actions 461 times. Merged at 5 different actions 14 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 22:05:38,387 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:05:38,387 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:05:43,159 INFO L232 lantSequenceWeakener]: Weakened 67 states. On average, predicates are now at 79.31% of their original sizes. [2018-10-24 22:05:43,160 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:07:18,150 INFO L413 sIntCurrentIteration]: We have 353 unified AI predicates [2018-10-24 22:07:18,150 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:07:18,151 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:07:18,151 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [6] total 18 [2018-10-24 22:07:18,151 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:07:18,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-24 22:07:18,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-24 22:07:18,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-10-24 22:07:18,154 INFO L87 Difference]: Start difference. First operand 1763 states and 2612 transitions. Second operand 14 states. Received shutdown request... [2018-10-24 22:08:06,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-24 22:08:06,512 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:08:06,518 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:08:06,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:08:06 BoogieIcfgContainer [2018-10-24 22:08:06,518 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:08:06,519 INFO L168 Benchmark]: Toolchain (without parser) took 238971.56 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -728.3 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-24 22:08:06,521 INFO L168 Benchmark]: CDTParser took 0.60 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 22:08:06,521 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1193.71 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-24 22:08:06,522 INFO L168 Benchmark]: Boogie Procedure Inliner took 323.56 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 767.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -887.9 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. [2018-10-24 22:08:06,523 INFO L168 Benchmark]: Boogie Preprocessor took 220.72 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-10-24 22:08:06,524 INFO L168 Benchmark]: RCFGBuilder took 5958.75 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 254.3 MB). Peak memory consumption was 254.3 MB. Max. memory is 7.1 GB. [2018-10-24 22:08:06,525 INFO L168 Benchmark]: TraceAbstraction took 231265.62 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.2 GB in the end (delta: -192.8 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-24 22:08:06,531 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60 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 1193.71 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 323.56 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 767.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -887.9 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 220.72 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5958.75 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 254.3 MB). Peak memory consumption was 254.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 231265.62 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.2 GB in the end (delta: -192.8 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 160]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 160). Cancelled while BasicCegarLoop was constructing difference of abstraction (1763states) and FLOYD_HOARE automaton (currently 16 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (235 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 231.1s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 109.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 639 SDtfs, 3313 SDslu, 395 SDs, 0 SdLazy, 5189 SolverSat, 1734 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 49.7s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 636 GetRequests, 438 SyntacticMatches, 166 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 96.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1763occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 16.5s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9960198036161073 AbsIntWeakeningRatio, 0.09446254071661238 AbsIntAvgWeakeningVarsNumRemoved, 478.1742671009772 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 3 MinimizatonAttempts, 23 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 825 NumberOfCodeBlocks, 825 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 821 ConstructedInterpolants, 0 QuantifiedInterpolants, 650735 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 391/676 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown