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/Problem03_label25_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 19:43:00,344 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 19:43:00,346 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 19:43:00,361 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 19:43:00,361 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 19:43:00,362 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 19:43:00,364 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 19:43:00,366 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 19:43:00,367 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 19:43:00,368 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 19:43:00,371 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 19:43:00,371 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 19:43:00,372 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 19:43:00,373 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 19:43:00,375 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 19:43:00,376 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 19:43:00,377 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 19:43:00,384 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 19:43:00,392 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 19:43:00,396 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 19:43:00,397 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 19:43:00,398 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 19:43:00,401 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 19:43:00,416 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 19:43:00,440 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 19:43:00,441 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 19:43:00,445 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 19:43:00,445 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 19:43:00,445 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 19:43:00,446 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 19:43:00,446 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 19:43:00,447 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 19:43:00,447 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 19:43:00,447 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 19:43:00,447 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 19:43:00,447 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 19:43:00,448 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 19:43:00,448 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 19:43:00,449 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 19:43:00,449 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 19:43:00,449 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 19:43:00,449 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 19:43:00,449 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 19:43:00,450 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 19:43:00,450 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 19:43:00,450 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 19:43:00,450 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 19:43:00,450 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 19:43:00,451 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:43:00,451 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 19:43:00,451 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 19:43:00,451 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 19:43:00,451 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 19:43:00,452 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 19:43:00,452 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 19:43:00,452 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 19:43:00,452 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 19:43:00,452 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 19:43:00,504 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 19:43:00,523 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 19:43:00,528 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 19:43:00,530 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 19:43:00,531 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 19:43:00,532 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label25_true-unreach-call.c [2018-10-24 19:43:00,619 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/02efebff8/24cc6fd29413462ebdaa4281d8320865/FLAG60e132f8b [2018-10-24 19:43:01,248 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 19:43:01,249 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label25_true-unreach-call.c [2018-10-24 19:43:01,275 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/02efebff8/24cc6fd29413462ebdaa4281d8320865/FLAG60e132f8b [2018-10-24 19:43:01,298 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/02efebff8/24cc6fd29413462ebdaa4281d8320865 [2018-10-24 19:43:01,314 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 19:43:01,317 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 19:43:01,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 19:43:01,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 19:43:01,323 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 19:43:01,324 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:43:01" (1/1) ... [2018-10-24 19:43:01,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ea74f48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:43:01, skipping insertion in model container [2018-10-24 19:43:01,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:43:01" (1/1) ... [2018-10-24 19:43:01,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 19:43:01,459 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 19:43:02,277 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:43:02,283 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 19:43:02,678 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:43:02,707 INFO L193 MainTranslator]: Completed translation [2018-10-24 19:43:02,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:43:02 WrapperNode [2018-10-24 19:43:02,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 19:43:02,709 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 19:43:02,709 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 19:43:02,710 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 19:43:02,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:43:02" (1/1) ... [2018-10-24 19:43:02,779 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:43:02" (1/1) ... [2018-10-24 19:43:03,074 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 19:43:03,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 19:43:03,077 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 19:43:03,077 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 19:43:03,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:43:02" (1/1) ... [2018-10-24 19:43:03,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:43:02" (1/1) ... [2018-10-24 19:43:03,099 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:43:02" (1/1) ... [2018-10-24 19:43:03,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:43:02" (1/1) ... [2018-10-24 19:43:03,149 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:43:02" (1/1) ... [2018-10-24 19:43:03,176 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:43:02" (1/1) ... [2018-10-24 19:43:03,191 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:43:02" (1/1) ... [2018-10-24 19:43:03,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 19:43:03,203 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 19:43:03,203 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 19:43:03,203 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 19:43:03,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:43:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:43:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 19:43:03,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 19:43:03,274 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 19:43:03,274 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 19:43:03,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 19:43:03,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 19:43:03,275 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 19:43:03,275 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 19:43:08,534 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 19:43:08,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:43:08 BoogieIcfgContainer [2018-10-24 19:43:08,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 19:43:08,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 19:43:08,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 19:43:08,542 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 19:43:08,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:43:01" (1/3) ... [2018-10-24 19:43:08,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@773daa4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:43:08, skipping insertion in model container [2018-10-24 19:43:08,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:43:02" (2/3) ... [2018-10-24 19:43:08,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@773daa4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:43:08, skipping insertion in model container [2018-10-24 19:43:08,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:43:08" (3/3) ... [2018-10-24 19:43:08,547 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label25_true-unreach-call.c [2018-10-24 19:43:08,559 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 19:43:08,570 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 19:43:08,593 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 19:43:08,663 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 19:43:08,663 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 19:43:08,664 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 19:43:08,664 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 19:43:08,664 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 19:43:08,665 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 19:43:08,665 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 19:43:08,665 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 19:43:08,708 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-24 19:43:08,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-10-24 19:43:08,729 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:43:08,731 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:43:08,734 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:43:08,742 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:43:08,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1441765812, now seen corresponding path program 1 times [2018-10-24 19:43:08,746 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:43:08,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:43:08,811 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:43:08,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:43:08,811 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:43:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:43:10,186 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 19:43:10,189 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:43:10,189 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 19:43:10,189 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:43:10,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 19:43:10,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 19:43:10,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 19:43:10,215 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-10-24 19:43:13,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:43:13,995 INFO L93 Difference]: Finished difference Result 1066 states and 1924 transitions. [2018-10-24 19:43:13,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 19:43:13,998 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 187 [2018-10-24 19:43:13,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:43:14,026 INFO L225 Difference]: With dead ends: 1066 [2018-10-24 19:43:14,027 INFO L226 Difference]: Without dead ends: 748 [2018-10-24 19:43:14,036 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 19:43:14,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2018-10-24 19:43:14,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 527. [2018-10-24 19:43:14,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2018-10-24 19:43:14,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 902 transitions. [2018-10-24 19:43:14,153 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 902 transitions. Word has length 187 [2018-10-24 19:43:14,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:43:14,154 INFO L481 AbstractCegarLoop]: Abstraction has 527 states and 902 transitions. [2018-10-24 19:43:14,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 19:43:14,155 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 902 transitions. [2018-10-24 19:43:14,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-24 19:43:14,174 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:43:14,174 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:43:14,175 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:43:14,178 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:43:14,178 INFO L82 PathProgramCache]: Analyzing trace with hash 730517125, now seen corresponding path program 1 times [2018-10-24 19:43:14,179 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:43:14,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:43:14,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:43:14,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:43:14,183 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:43:14,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:43:14,580 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-24 19:43:14,723 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:43:14,723 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:43:14,723 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:43:14,724 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:43:14,726 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:43:14,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:43:14,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:43:14,727 INFO L87 Difference]: Start difference. First operand 527 states and 902 transitions. Second operand 6 states. [2018-10-24 19:43:17,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:43:17,949 INFO L93 Difference]: Finished difference Result 1590 states and 2793 transitions. [2018-10-24 19:43:17,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 19:43:17,951 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 197 [2018-10-24 19:43:17,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:43:17,964 INFO L225 Difference]: With dead ends: 1590 [2018-10-24 19:43:17,964 INFO L226 Difference]: Without dead ends: 1069 [2018-10-24 19:43:17,968 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 19:43:17,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2018-10-24 19:43:18,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1024. [2018-10-24 19:43:18,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2018-10-24 19:43:18,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1746 transitions. [2018-10-24 19:43:18,058 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1746 transitions. Word has length 197 [2018-10-24 19:43:18,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:43:18,059 INFO L481 AbstractCegarLoop]: Abstraction has 1024 states and 1746 transitions. [2018-10-24 19:43:18,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:43:18,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1746 transitions. [2018-10-24 19:43:18,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-24 19:43:18,064 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:43:18,064 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:43:18,065 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:43:18,065 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:43:18,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1518817149, now seen corresponding path program 1 times [2018-10-24 19:43:18,066 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:43:18,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:43:18,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:43:18,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:43:18,068 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:43:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:43:18,269 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:43:18,270 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:43:18,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 19:43:18,270 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:43:18,271 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 19:43:18,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 19:43:18,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:43:18,272 INFO L87 Difference]: Start difference. First operand 1024 states and 1746 transitions. Second operand 5 states. [2018-10-24 19:43:21,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:43:21,737 INFO L93 Difference]: Finished difference Result 3166 states and 5674 transitions. [2018-10-24 19:43:21,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:43:21,745 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2018-10-24 19:43:21,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:43:21,765 INFO L225 Difference]: With dead ends: 3166 [2018-10-24 19:43:21,766 INFO L226 Difference]: Without dead ends: 2148 [2018-10-24 19:43:21,777 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 19:43:21,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2018-10-24 19:43:21,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 2105. [2018-10-24 19:43:21,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2105 states. [2018-10-24 19:43:21,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2105 states to 2105 states and 3422 transitions. [2018-10-24 19:43:21,885 INFO L78 Accepts]: Start accepts. Automaton has 2105 states and 3422 transitions. Word has length 198 [2018-10-24 19:43:21,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:43:21,885 INFO L481 AbstractCegarLoop]: Abstraction has 2105 states and 3422 transitions. [2018-10-24 19:43:21,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 19:43:21,886 INFO L276 IsEmpty]: Start isEmpty. Operand 2105 states and 3422 transitions. [2018-10-24 19:43:21,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-10-24 19:43:21,894 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:43:21,894 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:43:21,895 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:43:21,895 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:43:21,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1899321928, now seen corresponding path program 1 times [2018-10-24 19:43:21,895 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:43:21,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:43:21,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:43:21,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:43:21,897 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:43:21,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:43:22,237 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:43:22,238 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:43:22,238 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:43:22,238 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:43:22,239 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:43:22,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:43:22,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:43:22,240 INFO L87 Difference]: Start difference. First operand 2105 states and 3422 transitions. Second operand 3 states. [2018-10-24 19:43:24,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:43:24,498 INFO L93 Difference]: Finished difference Result 6108 states and 10330 transitions. [2018-10-24 19:43:24,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:43:24,499 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 200 [2018-10-24 19:43:24,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:43:24,528 INFO L225 Difference]: With dead ends: 6108 [2018-10-24 19:43:24,528 INFO L226 Difference]: Without dead ends: 4009 [2018-10-24 19:43:24,539 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:43:24,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4009 states. [2018-10-24 19:43:24,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4009 to 3973. [2018-10-24 19:43:24,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3973 states. [2018-10-24 19:43:24,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3973 states to 3973 states and 6514 transitions. [2018-10-24 19:43:24,687 INFO L78 Accepts]: Start accepts. Automaton has 3973 states and 6514 transitions. Word has length 200 [2018-10-24 19:43:24,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:43:24,687 INFO L481 AbstractCegarLoop]: Abstraction has 3973 states and 6514 transitions. [2018-10-24 19:43:24,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:43:24,687 INFO L276 IsEmpty]: Start isEmpty. Operand 3973 states and 6514 transitions. [2018-10-24 19:43:24,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-24 19:43:24,703 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:43:24,704 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:43:24,704 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:43:24,704 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:43:24,705 INFO L82 PathProgramCache]: Analyzing trace with hash 709935156, now seen corresponding path program 1 times [2018-10-24 19:43:24,705 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:43:24,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:43:24,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:43:24,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:43:24,707 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:43:24,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:43:25,092 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-24 19:43:25,136 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:43:25,136 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:43:25,137 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-24 19:43:25,137 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:43:25,137 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 19:43:25,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 19:43:25,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 19:43:25,138 INFO L87 Difference]: Start difference. First operand 3973 states and 6514 transitions. Second operand 7 states. [2018-10-24 19:43:27,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:43:27,095 INFO L93 Difference]: Finished difference Result 12096 states and 22014 transitions. [2018-10-24 19:43:27,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:43:27,098 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 206 [2018-10-24 19:43:27,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:43:27,164 INFO L225 Difference]: With dead ends: 12096 [2018-10-24 19:43:27,165 INFO L226 Difference]: Without dead ends: 8129 [2018-10-24 19:43:27,188 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:43:27,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8129 states. [2018-10-24 19:43:27,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8129 to 7942. [2018-10-24 19:43:27,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7942 states. [2018-10-24 19:43:27,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7942 states to 7942 states and 13503 transitions. [2018-10-24 19:43:27,551 INFO L78 Accepts]: Start accepts. Automaton has 7942 states and 13503 transitions. Word has length 206 [2018-10-24 19:43:27,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:43:27,551 INFO L481 AbstractCegarLoop]: Abstraction has 7942 states and 13503 transitions. [2018-10-24 19:43:27,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 19:43:27,551 INFO L276 IsEmpty]: Start isEmpty. Operand 7942 states and 13503 transitions. [2018-10-24 19:43:27,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-10-24 19:43:27,577 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:43:27,577 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:43:27,577 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:43:27,578 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:43:27,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1045586271, now seen corresponding path program 1 times [2018-10-24 19:43:27,578 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:43:27,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:43:27,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:43:27,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:43:27,580 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:43:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:43:27,859 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:43:28,244 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:43:28,245 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:43:28,245 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:43:28,245 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:43:28,246 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:43:28,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:43:28,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:43:28,247 INFO L87 Difference]: Start difference. First operand 7942 states and 13503 transitions. Second operand 6 states. [2018-10-24 19:43:31,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:43:31,078 INFO L93 Difference]: Finished difference Result 22960 states and 42530 transitions. [2018-10-24 19:43:31,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:43:31,079 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 211 [2018-10-24 19:43:31,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:43:31,186 INFO L225 Difference]: With dead ends: 22960 [2018-10-24 19:43:31,186 INFO L226 Difference]: Without dead ends: 15024 [2018-10-24 19:43:31,222 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:43:31,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15024 states. [2018-10-24 19:43:31,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15024 to 14866. [2018-10-24 19:43:31,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14866 states. [2018-10-24 19:43:31,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14866 states to 14866 states and 24364 transitions. [2018-10-24 19:43:31,715 INFO L78 Accepts]: Start accepts. Automaton has 14866 states and 24364 transitions. Word has length 211 [2018-10-24 19:43:31,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:43:31,715 INFO L481 AbstractCegarLoop]: Abstraction has 14866 states and 24364 transitions. [2018-10-24 19:43:31,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:43:31,716 INFO L276 IsEmpty]: Start isEmpty. Operand 14866 states and 24364 transitions. [2018-10-24 19:43:31,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-10-24 19:43:31,759 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:43:31,759 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:43:31,760 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:43:31,760 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:43:31,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1142196010, now seen corresponding path program 1 times [2018-10-24 19:43:31,760 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:43:31,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:43:31,762 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:43:31,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:43:31,762 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:43:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:43:32,091 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-24 19:43:32,091 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:43:32,092 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:43:32,092 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:43:32,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:43:32,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:43:32,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:43:32,093 INFO L87 Difference]: Start difference. First operand 14866 states and 24364 transitions. Second operand 3 states. [2018-10-24 19:43:35,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:43:35,497 INFO L93 Difference]: Finished difference Result 41273 states and 69018 transitions. [2018-10-24 19:43:35,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:43:35,497 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 235 [2018-10-24 19:43:35,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:43:35,635 INFO L225 Difference]: With dead ends: 41273 [2018-10-24 19:43:35,635 INFO L226 Difference]: Without dead ends: 26413 [2018-10-24 19:43:35,710 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:43:35,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26413 states. [2018-10-24 19:43:36,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26413 to 26410. [2018-10-24 19:43:36,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26410 states. [2018-10-24 19:43:36,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26410 states to 26410 states and 41323 transitions. [2018-10-24 19:43:36,511 INFO L78 Accepts]: Start accepts. Automaton has 26410 states and 41323 transitions. Word has length 235 [2018-10-24 19:43:36,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:43:36,512 INFO L481 AbstractCegarLoop]: Abstraction has 26410 states and 41323 transitions. [2018-10-24 19:43:36,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:43:36,513 INFO L276 IsEmpty]: Start isEmpty. Operand 26410 states and 41323 transitions. [2018-10-24 19:43:36,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-10-24 19:43:36,826 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:43:36,826 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:43:36,827 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:43:36,827 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:43:36,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1569214991, now seen corresponding path program 1 times [2018-10-24 19:43:36,828 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:43:36,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:43:36,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:43:36,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:43:36,829 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:43:36,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:43:37,347 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 80 proven. 18 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-10-24 19:43:37,347 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:43:37,348 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:43:37,351 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 254 with the following transitions: [2018-10-24 19:43:37,356 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [52], [53], [57], [61], [64], [65], [68], [71], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [957], [959], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 19:43:37,467 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:43:37,468 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-24 19:47:28,688 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-24 19:47:28,689 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-24 19:47:28,690 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 19:47:28,690 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:47:28,690 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 19:47:28,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:47:28,701 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 19:47:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:47:28,985 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 19:47:29,014 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 19:47:29,216 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 19:47:29,217 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:47:29,223 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:47:29,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:47:29 BoogieIcfgContainer [2018-10-24 19:47:29,224 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:47:29,225 INFO L168 Benchmark]: Toolchain (without parser) took 267910.15 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 154.5 MB. Max. memory is 7.1 GB. [2018-10-24 19:47:29,226 INFO L168 Benchmark]: CDTParser took 0.69 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 19:47:29,227 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1390.52 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: 87.2 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. [2018-10-24 19:47:29,230 INFO L168 Benchmark]: Boogie Procedure Inliner took 365.18 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 721.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -844.9 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-24 19:47:29,232 INFO L168 Benchmark]: Boogie Preprocessor took 125.75 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2018-10-24 19:47:29,233 INFO L168 Benchmark]: RCFGBuilder took 5333.52 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 258.3 MB). Peak memory consumption was 258.3 MB. Max. memory is 7.1 GB. [2018-10-24 19:47:29,234 INFO L168 Benchmark]: TraceAbstraction took 260686.18 ms. Allocated memory was 2.2 GB in the beginning and 3.8 GB in the end (delta: 1.6 GB). Free memory was 1.9 GB in the beginning and 3.5 GB in the end (delta: -1.6 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 19:47:29,241 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.69 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 1390.52 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: 87.2 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 365.18 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 721.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -844.9 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.75 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5333.52 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 258.3 MB). Peak memory consumption was 258.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 260686.18 ms. Allocated memory was 2.2 GB in the beginning and 3.8 GB in the end (delta: 1.6 GB). Free memory was 1.9 GB in the beginning and 3.5 GB in the end (delta: -1.6 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1575]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1575). Cancelled while BasicCegarLoop was analyzing trace of length 254 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 260.5s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 21.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1495 SDtfs, 5307 SDslu, 1089 SDs, 0 SdLazy, 7882 SolverSat, 1581 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26410occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 231.3s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 693 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 1434 NumberOfCodeBlocks, 1434 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1427 ConstructedInterpolants, 0 QuantifiedInterpolants, 791881 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 114/114 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown