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/Problem15_label46_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:51:43,389 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:51:43,394 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:51:43,406 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:51:43,406 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:51:43,407 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:51:43,408 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:51:43,411 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:51:43,413 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:51:43,414 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:51:43,422 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:51:43,422 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:51:43,423 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:51:43,424 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:51:43,429 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:51:43,429 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:51:43,432 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:51:43,434 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:51:43,437 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:51:43,439 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:51:43,443 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:51:43,444 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:51:43,448 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 21:51:43,449 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 21:51:43,450 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 21:51:43,451 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 21:51:43,452 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 21:51:43,452 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 21:51:43,456 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 21:51:43,458 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 21:51:43,459 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 21:51:43,459 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 21:51:43,459 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:51:43,460 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:51:43,461 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:51:43,461 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:51:43,461 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 21:51:43,476 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:51:43,476 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:51:43,477 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:51:43,477 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:51:43,478 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:51:43,478 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:51:43,478 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:51:43,478 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:51:43,478 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:51:43,478 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:51:43,479 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:51:43,479 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:51:43,479 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:51:43,480 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:51:43,480 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:51:43,480 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:51:43,480 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:51:43,480 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:51:43,480 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:51:43,481 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:51:43,481 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:51:43,481 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:51:43,481 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:51:43,481 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:51:43,481 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:51:43,482 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:51:43,482 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:51:43,482 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:51:43,482 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:51:43,482 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:51:43,483 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:51:43,483 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:51:43,483 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:51:43,483 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:51:43,550 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:51:43,565 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:51:43,570 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:51:43,572 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:51:43,572 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:51:43,573 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label46_true-unreach-call.c [2018-10-24 21:51:43,631 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/68bc0c9d9/3ded7c270d62436e9778525525435955/FLAGfd74b03a8 [2018-10-24 21:51:44,325 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:51:44,326 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label46_true-unreach-call.c [2018-10-24 21:51:44,349 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/68bc0c9d9/3ded7c270d62436e9778525525435955/FLAGfd74b03a8 [2018-10-24 21:51:44,368 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/68bc0c9d9/3ded7c270d62436e9778525525435955 [2018-10-24 21:51:44,381 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:51:44,384 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:51:44,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:51:44,385 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:51:44,390 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:51:44,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:51:44" (1/1) ... [2018-10-24 21:51:44,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ce1be01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:44, skipping insertion in model container [2018-10-24 21:51:44,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:51:44" (1/1) ... [2018-10-24 21:51:44,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:51:44,490 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:51:45,287 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:51:45,292 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:51:45,610 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:51:45,631 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:51:45,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:45 WrapperNode [2018-10-24 21:51:45,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:51:45,633 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:51:45,633 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:51:45,633 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:51:45,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:45" (1/1) ... [2018-10-24 21:51:45,701 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:45" (1/1) ... [2018-10-24 21:51:46,079 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:51:46,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:51:46,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:51:46,080 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:51:46,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:45" (1/1) ... [2018-10-24 21:51:46,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:45" (1/1) ... [2018-10-24 21:51:46,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:45" (1/1) ... [2018-10-24 21:51:46,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:45" (1/1) ... [2018-10-24 21:51:46,202 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:45" (1/1) ... [2018-10-24 21:51:46,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:45" (1/1) ... [2018-10-24 21:51:46,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:45" (1/1) ... [2018-10-24 21:51:46,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:51:46,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:51:46,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:51:46,303 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:51:46,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:45" (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 21:51:46,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:51:46,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:51:46,374 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:51:46,375 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:51:46,375 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:51:46,375 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:51:46,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:51:46,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:51:46,375 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:51:46,376 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:51:55,557 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:51:55,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:51:55 BoogieIcfgContainer [2018-10-24 21:51:55,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:51:55,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:51:55,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:51:55,563 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:51:55,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:51:44" (1/3) ... [2018-10-24 21:51:55,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fea2d10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:51:55, skipping insertion in model container [2018-10-24 21:51:55,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:45" (2/3) ... [2018-10-24 21:51:55,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fea2d10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:51:55, skipping insertion in model container [2018-10-24 21:51:55,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:51:55" (3/3) ... [2018-10-24 21:51:55,567 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label46_true-unreach-call.c [2018-10-24 21:51:55,576 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:51:55,584 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:51:55,602 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:51:55,642 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:51:55,642 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:51:55,642 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:51:55,642 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:51:55,642 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:51:55,643 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:51:55,643 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:51:55,643 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:51:55,676 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-24 21:51:55,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-24 21:51:55,686 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:51:55,687 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:51:55,690 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:51:55,696 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:51:55,697 INFO L82 PathProgramCache]: Analyzing trace with hash -171109996, now seen corresponding path program 1 times [2018-10-24 21:51:55,699 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:51:55,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:51:55,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:51:55,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:51:55,749 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:51:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:51:56,227 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:51:56,361 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 21:51:56,364 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:51:56,364 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:51:56,364 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:51:56,370 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:51:56,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:51:56,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:51:56,389 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 3 states. [2018-10-24 21:52:01,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:52:01,419 INFO L93 Difference]: Finished difference Result 1198 states and 2158 transitions. [2018-10-24 21:52:01,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:52:01,420 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2018-10-24 21:52:01,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:52:01,450 INFO L225 Difference]: With dead ends: 1198 [2018-10-24 21:52:01,450 INFO L226 Difference]: Without dead ends: 758 [2018-10-24 21:52:01,462 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:52:01,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2018-10-24 21:52:01,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 754. [2018-10-24 21:52:01,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 754 states. [2018-10-24 21:52:01,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1328 transitions. [2018-10-24 21:52:01,575 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1328 transitions. Word has length 50 [2018-10-24 21:52:01,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:52:01,576 INFO L481 AbstractCegarLoop]: Abstraction has 754 states and 1328 transitions. [2018-10-24 21:52:01,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:52:01,577 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1328 transitions. [2018-10-24 21:52:01,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-24 21:52:01,673 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:52:01,674 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:52:01,674 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:52:01,676 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:52:01,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1340083984, now seen corresponding path program 1 times [2018-10-24 21:52:01,677 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:52:01,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:52:01,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:52:01,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:52:01,682 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:52:01,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:52:01,982 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:52:01,983 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:52:01,983 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:52:01,983 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:52:01,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:52:01,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:52:01,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:52:01,986 INFO L87 Difference]: Start difference. First operand 754 states and 1328 transitions. Second operand 5 states. [2018-10-24 21:52:10,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:52:10,499 INFO L93 Difference]: Finished difference Result 2229 states and 3961 transitions. [2018-10-24 21:52:10,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:52:10,500 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2018-10-24 21:52:10,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:52:10,513 INFO L225 Difference]: With dead ends: 2229 [2018-10-24 21:52:10,513 INFO L226 Difference]: Without dead ends: 1481 [2018-10-24 21:52:10,517 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 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 21:52:10,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2018-10-24 21:52:10,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1449. [2018-10-24 21:52:10,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1449 states. [2018-10-24 21:52:10,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 2254 transitions. [2018-10-24 21:52:10,588 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 2254 transitions. Word has length 124 [2018-10-24 21:52:10,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:52:10,589 INFO L481 AbstractCegarLoop]: Abstraction has 1449 states and 2254 transitions. [2018-10-24 21:52:10,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:52:10,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 2254 transitions. [2018-10-24 21:52:10,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-24 21:52:10,605 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:52:10,606 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:52:10,606 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:52:10,606 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:52:10,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1528606616, now seen corresponding path program 1 times [2018-10-24 21:52:10,607 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:52:10,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:52:10,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:52:10,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:52:10,611 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:52:10,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:52:10,915 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:52:10,915 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:52:10,915 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:52:10,915 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:52:10,916 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:52:10,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:52:10,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:52:10,917 INFO L87 Difference]: Start difference. First operand 1449 states and 2254 transitions. Second operand 6 states. [2018-10-24 21:52:18,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:52:18,580 INFO L93 Difference]: Finished difference Result 4188 states and 6605 transitions. [2018-10-24 21:52:18,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:52:18,581 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-10-24 21:52:18,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:52:18,597 INFO L225 Difference]: With dead ends: 4188 [2018-10-24 21:52:18,597 INFO L226 Difference]: Without dead ends: 2745 [2018-10-24 21:52:18,607 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:52:18,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2018-10-24 21:52:18,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 2711. [2018-10-24 21:52:18,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2711 states. [2018-10-24 21:52:18,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 3819 transitions. [2018-10-24 21:52:18,692 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 3819 transitions. Word has length 136 [2018-10-24 21:52:18,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:52:18,692 INFO L481 AbstractCegarLoop]: Abstraction has 2711 states and 3819 transitions. [2018-10-24 21:52:18,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:52:18,694 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 3819 transitions. [2018-10-24 21:52:18,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-24 21:52:18,696 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:52:18,697 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:52:18,697 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:52:18,697 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:52:18,697 INFO L82 PathProgramCache]: Analyzing trace with hash -929559410, now seen corresponding path program 1 times [2018-10-24 21:52:18,697 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:52:18,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:52:18,700 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:52:18,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:52:18,700 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:52:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:52:18,954 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:52:18,954 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:52:18,954 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:52:18,955 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:52:18,955 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:52:18,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:52:18,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:52:18,956 INFO L87 Difference]: Start difference. First operand 2711 states and 3819 transitions. Second operand 6 states. [2018-10-24 21:52:27,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:52:27,743 INFO L93 Difference]: Finished difference Result 6682 states and 9546 transitions. [2018-10-24 21:52:27,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:52:27,744 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2018-10-24 21:52:27,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:52:27,765 INFO L225 Difference]: With dead ends: 6682 [2018-10-24 21:52:27,765 INFO L226 Difference]: Without dead ends: 3977 [2018-10-24 21:52:27,778 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:52:27,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3977 states. [2018-10-24 21:52:27,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3977 to 3953. [2018-10-24 21:52:27,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3953 states. [2018-10-24 21:52:27,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3953 states to 3953 states and 5247 transitions. [2018-10-24 21:52:27,902 INFO L78 Accepts]: Start accepts. Automaton has 3953 states and 5247 transitions. Word has length 137 [2018-10-24 21:52:27,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:52:27,903 INFO L481 AbstractCegarLoop]: Abstraction has 3953 states and 5247 transitions. [2018-10-24 21:52:27,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:52:27,903 INFO L276 IsEmpty]: Start isEmpty. Operand 3953 states and 5247 transitions. [2018-10-24 21:52:27,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-10-24 21:52:27,906 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:52:27,906 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:52:27,906 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:52:27,907 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:52:27,907 INFO L82 PathProgramCache]: Analyzing trace with hash -470998967, now seen corresponding path program 1 times [2018-10-24 21:52:27,907 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:52:27,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:52:27,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:52:27,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:52:27,908 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:52:27,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:52:28,429 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:52:28,429 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:52:28,430 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:52:28,430 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:52:28,430 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:52:28,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:52:28,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:52:28,431 INFO L87 Difference]: Start difference. First operand 3953 states and 5247 transitions. Second operand 6 states. [2018-10-24 21:52:46,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:52:46,602 INFO L93 Difference]: Finished difference Result 14072 states and 19014 transitions. [2018-10-24 21:52:46,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:52:46,603 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 177 [2018-10-24 21:52:46,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:52:46,656 INFO L225 Difference]: With dead ends: 14072 [2018-10-24 21:52:46,657 INFO L226 Difference]: Without dead ends: 10125 [2018-10-24 21:52:46,680 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:52:46,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10125 states. [2018-10-24 21:52:46,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10125 to 9916. [2018-10-24 21:52:46,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9916 states. [2018-10-24 21:52:46,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9916 states to 9916 states and 12557 transitions. [2018-10-24 21:52:46,915 INFO L78 Accepts]: Start accepts. Automaton has 9916 states and 12557 transitions. Word has length 177 [2018-10-24 21:52:46,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:52:46,916 INFO L481 AbstractCegarLoop]: Abstraction has 9916 states and 12557 transitions. [2018-10-24 21:52:46,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:52:46,916 INFO L276 IsEmpty]: Start isEmpty. Operand 9916 states and 12557 transitions. [2018-10-24 21:52:46,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-10-24 21:52:46,924 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:52:46,925 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:52:46,925 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:52:46,925 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:52:46,926 INFO L82 PathProgramCache]: Analyzing trace with hash 933056982, now seen corresponding path program 1 times [2018-10-24 21:52:46,926 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:52:46,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:52:46,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:52:46,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:52:46,927 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:52:46,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:52:47,241 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-10-24 21:52:47,241 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:52:47,241 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:52:47,242 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:52:47,242 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:52:47,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:52:47,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:52:47,244 INFO L87 Difference]: Start difference. First operand 9916 states and 12557 transitions. Second operand 4 states. [2018-10-24 21:52:55,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:52:55,227 INFO L93 Difference]: Finished difference Result 26048 states and 34184 transitions. [2018-10-24 21:52:55,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:52:55,228 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 205 [2018-10-24 21:52:55,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:52:55,289 INFO L225 Difference]: With dead ends: 26048 [2018-10-24 21:52:55,290 INFO L226 Difference]: Without dead ends: 16138 [2018-10-24 21:52:55,341 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:52:55,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16138 states. [2018-10-24 21:52:55,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16138 to 15819. [2018-10-24 21:52:55,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15819 states. [2018-10-24 21:52:55,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15819 states to 15819 states and 19538 transitions. [2018-10-24 21:52:55,697 INFO L78 Accepts]: Start accepts. Automaton has 15819 states and 19538 transitions. Word has length 205 [2018-10-24 21:52:55,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:52:55,697 INFO L481 AbstractCegarLoop]: Abstraction has 15819 states and 19538 transitions. [2018-10-24 21:52:55,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:52:55,698 INFO L276 IsEmpty]: Start isEmpty. Operand 15819 states and 19538 transitions. [2018-10-24 21:52:55,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-24 21:52:55,708 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:52:55,708 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:52:55,708 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:52:55,709 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:52:55,709 INFO L82 PathProgramCache]: Analyzing trace with hash -75498616, now seen corresponding path program 1 times [2018-10-24 21:52:55,709 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:52:55,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:52:55,710 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:52:55,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:52:55,710 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:52:55,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:52:55,962 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 3 [2018-10-24 21:52:55,990 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-10-24 21:52:55,990 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:52:55,990 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:52:55,990 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:52:55,991 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:52:55,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:52:55,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:52:55,992 INFO L87 Difference]: Start difference. First operand 15819 states and 19538 transitions. Second operand 3 states. [2018-10-24 21:53:00,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:53:00,598 INFO L93 Difference]: Finished difference Result 36397 states and 46181 transitions. [2018-10-24 21:53:00,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:53:00,601 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 218 [2018-10-24 21:53:00,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:53:00,689 INFO L225 Difference]: With dead ends: 36397 [2018-10-24 21:53:00,690 INFO L226 Difference]: Without dead ends: 20584 [2018-10-24 21:53:00,726 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:53:00,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20584 states. [2018-10-24 21:53:01,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20584 to 20530. [2018-10-24 21:53:01,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20530 states. [2018-10-24 21:53:01,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20530 states to 20530 states and 25907 transitions. [2018-10-24 21:53:01,140 INFO L78 Accepts]: Start accepts. Automaton has 20530 states and 25907 transitions. Word has length 218 [2018-10-24 21:53:01,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:53:01,140 INFO L481 AbstractCegarLoop]: Abstraction has 20530 states and 25907 transitions. [2018-10-24 21:53:01,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:53:01,141 INFO L276 IsEmpty]: Start isEmpty. Operand 20530 states and 25907 transitions. [2018-10-24 21:53:01,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-10-24 21:53:01,154 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:53:01,154 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:53:01,155 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:53:01,155 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:53:01,155 INFO L82 PathProgramCache]: Analyzing trace with hash 976466900, now seen corresponding path program 1 times [2018-10-24 21:53:01,155 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:53:01,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:53:01,156 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:53:01,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:53:01,156 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:53:01,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:53:01,845 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-10-24 21:53:01,846 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:53:01,846 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:53:01,847 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 232 with the following transitions: [2018-10-24 21:53:01,850 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [373], [375], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [714], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 21:53:01,938 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:53:01,938 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:53:04,307 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:53:05,179 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:53:05,181 INFO L272 AbstractInterpreter]: Visited 105 different actions 105 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 21:53:05,209 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:53:05,209 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:53:07,176 INFO L232 lantSequenceWeakener]: Weakened 223 states. On average, predicates are now at 78.01% of their original sizes. [2018-10-24 21:53:07,178 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:53:07,692 INFO L413 sIntCurrentIteration]: We have 230 unified AI predicates [2018-10-24 21:53:07,692 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:53:07,693 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:53:07,693 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2018-10-24 21:53:07,694 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:53:07,694 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 21:53:07,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 21:53:07,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:53:07,695 INFO L87 Difference]: Start difference. First operand 20530 states and 25907 transitions. Second operand 8 states. [2018-10-24 21:54:24,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:54:24,618 INFO L93 Difference]: Finished difference Result 41364 states and 52165 transitions. [2018-10-24 21:54:24,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:54:24,618 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 231 [2018-10-24 21:54:24,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:54:24,679 INFO L225 Difference]: With dead ends: 41364 [2018-10-24 21:54:24,679 INFO L226 Difference]: Without dead ends: 20840 [2018-10-24 21:54:24,724 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 232 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 21:54:24,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20840 states. [2018-10-24 21:54:25,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20840 to 20838. [2018-10-24 21:54:25,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20838 states. [2018-10-24 21:54:25,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20838 states to 20838 states and 26224 transitions. [2018-10-24 21:54:25,060 INFO L78 Accepts]: Start accepts. Automaton has 20838 states and 26224 transitions. Word has length 231 [2018-10-24 21:54:25,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:54:25,060 INFO L481 AbstractCegarLoop]: Abstraction has 20838 states and 26224 transitions. [2018-10-24 21:54:25,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 21:54:25,060 INFO L276 IsEmpty]: Start isEmpty. Operand 20838 states and 26224 transitions. [2018-10-24 21:54:25,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-10-24 21:54:25,076 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:54:25,076 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:54:25,077 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:54:25,077 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:54:25,077 INFO L82 PathProgramCache]: Analyzing trace with hash 198522603, now seen corresponding path program 1 times [2018-10-24 21:54:25,078 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:54:25,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:54:25,078 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:54:25,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:54:25,079 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:54:25,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:54:26,196 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 213 proven. 169 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:54:26,196 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:54:26,196 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:54:26,197 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 328 with the following transitions: [2018-10-24 21:54:26,197 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [373], [375], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [714], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 21:54:26,202 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:54:26,203 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:54:28,420 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:54:35,837 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:54:35,837 INFO L272 AbstractInterpreter]: Visited 109 different actions 314 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 21:54:35,847 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:54:35,847 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:54:40,045 INFO L232 lantSequenceWeakener]: Weakened 88 states. On average, predicates are now at 79.18% of their original sizes. [2018-10-24 21:54:40,046 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-24 21:55:26,375 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:55:26,379 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:55:26,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:55:26 BoogieIcfgContainer [2018-10-24 21:55:26,379 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:55:26,380 INFO L168 Benchmark]: Toolchain (without parser) took 221998.69 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 59.2 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-10-24 21:55:26,381 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:55:26,382 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1247.48 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:55:26,382 INFO L168 Benchmark]: Boogie Procedure Inliner took 446.35 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: -881.5 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2018-10-24 21:55:26,383 INFO L168 Benchmark]: Boogie Preprocessor took 222.72 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: 28.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:55:26,384 INFO L168 Benchmark]: RCFGBuilder took 9255.99 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 300.1 MB). Peak memory consumption was 300.1 MB. Max. memory is 7.1 GB. [2018-10-24 21:55:26,385 INFO L168 Benchmark]: TraceAbstraction took 210819.92 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 1.4 GB in the end (delta: 506.2 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-24 21:55:26,392 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1247.48 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 446.35 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: -881.5 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 222.72 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: 28.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9255.99 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 300.1 MB). Peak memory consumption was 300.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210819.92 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 1.4 GB in the end (delta: 506.2 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 136]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 136). Cancelled while BasicCegarLoop was analyzing trace of length 328 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 13 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 210.7s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 138.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2112 SDtfs, 8299 SDslu, 1736 SDs, 0 SdLazy, 15805 SolverSat, 3412 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 102.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 284 GetRequests, 242 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20838occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 13.0s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9956046032739027 AbsIntWeakeningRatio, 0.10431654676258993 AbsIntAvgWeakeningVarsNumRemoved, 440.068345323741 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 678 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 1278 NumberOfCodeBlocks, 1278 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1270 ConstructedInterpolants, 0 QuantifiedInterpolants, 580940 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 664/666 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown