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/Problem14_label39_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:32:49,483 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:32:49,487 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:32:49,500 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:32:49,500 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:32:49,501 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:32:49,502 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:32:49,504 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:32:49,506 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:32:49,507 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:32:49,508 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:32:49,509 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:32:49,510 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:32:49,511 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:32:49,512 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:32:49,513 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:32:49,514 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:32:49,516 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:32:49,518 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:32:49,520 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:32:49,524 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:32:49,525 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:32:49,531 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 18:32:49,532 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 18:32:49,532 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 18:32:49,535 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 18:32:49,536 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 18:32:49,539 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 18:32:49,540 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 18:32:49,543 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 18:32:49,543 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 18:32:49,545 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 18:32:49,550 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 18:32:49,570 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:32:49,570 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:32:49,571 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:32:49,571 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:32:49,571 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:32:49,571 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:32:49,572 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:32:49,572 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:32:49,572 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:32:49,572 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:32:49,572 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:32:49,573 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:32:49,574 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:32:49,574 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:32:49,574 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:32:49,574 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:32:49,574 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:32:49,575 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:32:49,575 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:32:49,575 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:32:49,575 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:32:49,575 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:32:49,576 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:32:49,576 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:32:49,576 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:32:49,576 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:32:49,577 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:32:49,577 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:32:49,577 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:32:49,577 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:32:49,577 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:32:49,578 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:32:49,578 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:32:49,578 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:32:49,633 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:32:49,646 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:32:49,650 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:32:49,652 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:32:49,652 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:32:49,653 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label39_false-unreach-call_false-termination.c [2018-10-24 18:32:49,717 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/824720962/d8c13bc032d94a959fff3dda2933d023/FLAG2154aba38 [2018-10-24 18:32:50,337 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:32:50,338 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label39_false-unreach-call_false-termination.c [2018-10-24 18:32:50,355 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/824720962/d8c13bc032d94a959fff3dda2933d023/FLAG2154aba38 [2018-10-24 18:32:50,372 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/824720962/d8c13bc032d94a959fff3dda2933d023 [2018-10-24 18:32:50,385 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:32:50,387 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:32:50,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:32:50,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:32:50,392 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:32:50,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:32:50" (1/1) ... [2018-10-24 18:32:50,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d98d65d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:32:50, skipping insertion in model container [2018-10-24 18:32:50,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:32:50" (1/1) ... [2018-10-24 18:32:50,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:32:50,494 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:32:50,981 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:32:50,988 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:32:51,177 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:32:51,198 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:32:51,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:32:51 WrapperNode [2018-10-24 18:32:51,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:32:51,200 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:32:51,200 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:32:51,200 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:32:51,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:32:51" (1/1) ... [2018-10-24 18:32:51,241 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:32:51" (1/1) ... [2018-10-24 18:32:51,469 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:32:51,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:32:51,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:32:51,469 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:32:51,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:32:51" (1/1) ... [2018-10-24 18:32:51,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:32:51" (1/1) ... [2018-10-24 18:32:51,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:32:51" (1/1) ... [2018-10-24 18:32:51,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:32:51" (1/1) ... [2018-10-24 18:32:51,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:32:51" (1/1) ... [2018-10-24 18:32:51,558 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:32:51" (1/1) ... [2018-10-24 18:32:51,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:32:51" (1/1) ... [2018-10-24 18:32:51,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:32:51,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:32:51,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:32:51,576 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:32:51,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:32:51" (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 18:32:51,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:32:51,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:32:51,632 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:32:51,633 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:32:51,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:32:51,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:32:51,633 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:32:51,633 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:32:55,118 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:32:55,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:32:55 BoogieIcfgContainer [2018-10-24 18:32:55,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:32:55,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:32:55,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:32:55,130 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:32:55,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:32:50" (1/3) ... [2018-10-24 18:32:55,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51514ce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:32:55, skipping insertion in model container [2018-10-24 18:32:55,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:32:51" (2/3) ... [2018-10-24 18:32:55,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51514ce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:32:55, skipping insertion in model container [2018-10-24 18:32:55,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:32:55" (3/3) ... [2018-10-24 18:32:55,136 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label39_false-unreach-call_false-termination.c [2018-10-24 18:32:55,146 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:32:55,159 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:32:55,178 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:32:55,215 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:32:55,215 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:32:55,215 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:32:55,215 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:32:55,216 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:32:55,216 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:32:55,216 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:32:55,216 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:32:55,244 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-24 18:32:55,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-24 18:32:55,252 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:32:55,253 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] [2018-10-24 18:32:55,256 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:32:55,262 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:32:55,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1823937900, now seen corresponding path program 1 times [2018-10-24 18:32:55,264 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:32:55,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:32:55,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:32:55,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:32:55,318 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:32:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:32:55,673 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:32:55,809 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 18:32:55,811 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:32:55,812 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:32:55,812 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:32:55,820 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:32:55,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:32:55,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:32:55,841 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-24 18:32:57,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:32:57,539 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-24 18:32:57,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:32:57,542 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2018-10-24 18:32:57,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:32:57,563 INFO L225 Difference]: With dead ends: 691 [2018-10-24 18:32:57,563 INFO L226 Difference]: Without dead ends: 434 [2018-10-24 18:32:57,577 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:32:57,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-24 18:32:57,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-24 18:32:57,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-24 18:32:57,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-10-24 18:32:57,664 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 32 [2018-10-24 18:32:57,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:32:57,664 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-10-24 18:32:57,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:32:57,665 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-10-24 18:32:57,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-24 18:32:57,671 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:32:57,672 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:32:57,672 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:32:57,673 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:32:57,673 INFO L82 PathProgramCache]: Analyzing trace with hash -319610313, now seen corresponding path program 1 times [2018-10-24 18:32:57,673 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:32:57,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:32:57,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:32:57,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:32:57,675 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:32:57,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:32:58,001 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:32:58,002 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:32:58,002 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:32:58,002 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:32:58,004 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:32:58,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:32:58,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:32:58,005 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-10-24 18:33:00,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:33:00,029 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-10-24 18:33:00,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:33:00,031 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2018-10-24 18:33:00,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:33:00,039 INFO L225 Difference]: With dead ends: 1062 [2018-10-24 18:33:00,040 INFO L226 Difference]: Without dead ends: 634 [2018-10-24 18:33:00,043 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 18:33:00,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-10-24 18:33:00,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-10-24 18:33:00,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-10-24 18:33:00,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-10-24 18:33:00,090 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 119 [2018-10-24 18:33:00,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:33:00,091 INFO L481 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-10-24 18:33:00,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:33:00,092 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-10-24 18:33:00,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-24 18:33:00,095 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:33:00,095 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:33:00,096 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:33:00,096 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:33:00,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1728515332, now seen corresponding path program 1 times [2018-10-24 18:33:00,097 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:33:00,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:00,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:33:00,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:00,098 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:33:00,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:33:00,420 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:33:00,421 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:33:00,421 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:33:00,422 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 129 with the following transitions: [2018-10-24 18:33:00,425 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [157], [159], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 18:33:00,512 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:33:00,513 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:33:02,556 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:33:02,558 INFO L272 AbstractInterpreter]: Visited 100 different actions 100 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 18:33:02,600 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:33:02,600 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:33:03,907 INFO L232 lantSequenceWeakener]: Weakened 123 states. On average, predicates are now at 77.9% of their original sizes. [2018-10-24 18:33:03,908 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:33:04,119 INFO L413 sIntCurrentIteration]: We have 127 unified AI predicates [2018-10-24 18:33:04,119 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:33:04,120 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:33:04,121 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-10-24 18:33:04,121 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:33:04,122 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 18:33:04,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 18:33:04,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 18:33:04,122 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 7 states. [2018-10-24 18:33:05,856 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:33:30,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:33:30,093 INFO L93 Difference]: Finished difference Result 1429 states and 2328 transitions. [2018-10-24 18:33:30,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:33:30,093 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 128 [2018-10-24 18:33:30,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:33:30,098 INFO L225 Difference]: With dead ends: 1429 [2018-10-24 18:33:30,099 INFO L226 Difference]: Without dead ends: 810 [2018-10-24 18:33:30,101 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 128 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:33:30,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2018-10-24 18:33:30,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 808. [2018-10-24 18:33:30,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 808 states. [2018-10-24 18:33:30,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1209 transitions. [2018-10-24 18:33:30,132 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1209 transitions. Word has length 128 [2018-10-24 18:33:30,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:33:30,133 INFO L481 AbstractCegarLoop]: Abstraction has 808 states and 1209 transitions. [2018-10-24 18:33:30,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 18:33:30,133 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1209 transitions. [2018-10-24 18:33:30,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-10-24 18:33:30,139 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:33:30,139 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 18:33:30,140 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:33:30,140 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:33:30,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1027226283, now seen corresponding path program 1 times [2018-10-24 18:33:30,141 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:33:30,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:30,142 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:33:30,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:30,142 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:33:30,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:33:30,973 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 133 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:33:30,973 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:33:30,973 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:33:30,973 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 214 with the following transitions: [2018-10-24 18:33:30,974 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [157], [159], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 18:33:30,980 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:33:30,980 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:33:34,093 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 18:33:34,094 INFO L272 AbstractInterpreter]: Visited 105 different actions 202 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:33:34,104 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:33:34,105 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 18:33:34,105 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:33:34,105 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 18:33:34,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:33:34,115 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 18:33:34,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:33:34,205 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 18:33:34,856 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 82 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:33:34,856 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 18:33:35,579 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 18:33:35,960 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:33:35,981 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 18:33:35,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 20 [2018-10-24 18:33:35,982 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 18:33:35,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-24 18:33:35,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-24 18:33:35,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2018-10-24 18:33:35,984 INFO L87 Difference]: Start difference. First operand 808 states and 1209 transitions. Second operand 15 states. [2018-10-24 18:33:36,441 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 28 [2018-10-24 18:33:37,297 WARN L179 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 23 [2018-10-24 18:33:42,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:33:42,556 INFO L93 Difference]: Finished difference Result 2479 states and 3951 transitions. [2018-10-24 18:33:42,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-24 18:33:42,557 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 213 [2018-10-24 18:33:42,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:33:42,573 INFO L225 Difference]: With dead ends: 2479 [2018-10-24 18:33:42,574 INFO L226 Difference]: Without dead ends: 1661 [2018-10-24 18:33:42,581 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 418 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=327, Invalid=933, Unknown=0, NotChecked=0, Total=1260 [2018-10-24 18:33:42,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2018-10-24 18:33:42,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 1397. [2018-10-24 18:33:42,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1397 states. [2018-10-24 18:33:42,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 1795 transitions. [2018-10-24 18:33:42,652 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 1795 transitions. Word has length 213 [2018-10-24 18:33:42,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:33:42,654 INFO L481 AbstractCegarLoop]: Abstraction has 1397 states and 1795 transitions. [2018-10-24 18:33:42,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-24 18:33:42,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 1795 transitions. [2018-10-24 18:33:42,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-10-24 18:33:42,658 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:33:42,660 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 18:33:42,660 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:33:42,660 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:33:42,661 INFO L82 PathProgramCache]: Analyzing trace with hash -229492457, now seen corresponding path program 1 times [2018-10-24 18:33:42,661 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:33:42,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:42,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:33:42,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:42,662 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:33:42,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:33:43,650 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:33:43,651 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:33:43,651 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:33:43,651 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 240 with the following transitions: [2018-10-24 18:33:43,651 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [157], [159], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 18:33:43,656 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:33:43,657 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:33:48,888 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:33:48,888 INFO L272 AbstractInterpreter]: Visited 119 different actions 232 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:33:48,898 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:33:48,898 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:33:51,840 INFO L232 lantSequenceWeakener]: Weakened 230 states. On average, predicates are now at 77.86% of their original sizes. [2018-10-24 18:33:51,840 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:33:54,305 INFO L413 sIntCurrentIteration]: We have 238 unified AI predicates [2018-10-24 18:33:54,305 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:33:54,305 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:33:54,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [15] total 28 [2018-10-24 18:33:54,306 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:33:54,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-24 18:33:54,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-24 18:33:54,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2018-10-24 18:33:54,307 INFO L87 Difference]: Start difference. First operand 1397 states and 1795 transitions. Second operand 15 states. [2018-10-24 18:34:30,289 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:34:48,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:34:48,621 INFO L93 Difference]: Finished difference Result 2796 states and 3618 transitions. [2018-10-24 18:34:48,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-24 18:34:48,621 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 239 [2018-10-24 18:34:48,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:34:48,630 INFO L225 Difference]: With dead ends: 2796 [2018-10-24 18:34:48,630 INFO L226 Difference]: Without dead ends: 1588 [2018-10-24 18:34:48,634 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 251 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2018-10-24 18:34:48,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1588 states. [2018-10-24 18:34:48,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1588 to 1580. [2018-10-24 18:34:48,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2018-10-24 18:34:48,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 1980 transitions. [2018-10-24 18:34:48,724 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 1980 transitions. Word has length 239 [2018-10-24 18:34:48,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:34:48,725 INFO L481 AbstractCegarLoop]: Abstraction has 1580 states and 1980 transitions. [2018-10-24 18:34:48,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-24 18:34:48,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 1980 transitions. [2018-10-24 18:34:48,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2018-10-24 18:34:48,731 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:34:48,732 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:34:48,732 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:34:48,732 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:34:48,732 INFO L82 PathProgramCache]: Analyzing trace with hash 613999339, now seen corresponding path program 1 times [2018-10-24 18:34:48,732 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:34:48,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:34:48,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:34:48,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:34:48,734 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:34:48,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:34:49,024 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-24 18:34:49,282 WARN L179 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-10-24 18:34:49,930 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 18:34:50,356 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 183 proven. 125 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-24 18:34:50,357 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:34:50,357 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:34:50,357 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 350 with the following transitions: [2018-10-24 18:34:50,360 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [157], [159], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 18:34:50,366 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:34:50,366 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:34:56,255 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:35:31,642 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:35:31,643 INFO L272 AbstractInterpreter]: Visited 120 different actions 584 times. Merged at 7 different actions 28 times. Never widened. Found 5 fixpoints after 2 different actions. Largest state had 24 variables. [2018-10-24 18:35:31,656 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:35:31,656 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:35:33,729 INFO L232 lantSequenceWeakener]: Weakened 347 states. On average, predicates are now at 77.58% of their original sizes. [2018-10-24 18:35:33,729 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:35:34,279 INFO L413 sIntCurrentIteration]: We have 348 unified AI predicates [2018-10-24 18:35:34,279 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:35:34,280 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:35:34,280 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 16 [2018-10-24 18:35:34,280 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:35:34,281 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 18:35:34,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 18:35:34,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-10-24 18:35:34,282 INFO L87 Difference]: Start difference. First operand 1580 states and 1980 transitions. Second operand 10 states. [2018-10-24 18:35:50,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:35:50,038 INFO L93 Difference]: Finished difference Result 2982 states and 3867 transitions. [2018-10-24 18:35:50,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-24 18:35:50,039 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 349 [2018-10-24 18:35:50,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:35:50,051 INFO L225 Difference]: With dead ends: 2982 [2018-10-24 18:35:50,051 INFO L226 Difference]: Without dead ends: 1776 [2018-10-24 18:35:50,055 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 356 GetRequests, 320 SyntacticMatches, 20 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-10-24 18:35:50,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1776 states. [2018-10-24 18:35:50,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1776 to 1767. [2018-10-24 18:35:50,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2018-10-24 18:35:50,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 2189 transitions. [2018-10-24 18:35:50,156 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 2189 transitions. Word has length 349 [2018-10-24 18:35:50,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:35:50,156 INFO L481 AbstractCegarLoop]: Abstraction has 1767 states and 2189 transitions. [2018-10-24 18:35:50,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-24 18:35:50,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 2189 transitions. [2018-10-24 18:35:50,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2018-10-24 18:35:50,166 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:35:50,166 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:35:50,167 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:35:50,167 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:35:50,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1339418423, now seen corresponding path program 1 times [2018-10-24 18:35:50,167 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:35:50,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:35:50,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:35:50,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:35:50,168 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:35:50,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:35:50,540 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 275 proven. 81 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2018-10-24 18:35:50,541 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:35:50,541 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:35:50,541 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 432 with the following transitions: [2018-10-24 18:35:50,542 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [157], [159], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [542], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 18:35:50,545 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:35:50,546 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:35:55,868 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 18:36:59,644 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-24 18:36:59,645 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-24 18:36:59,645 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 18:36:59,645 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:36:59,645 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 18:36:59,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:36:59,653 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 18:36:59,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:36:59,767 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 18:36:59,808 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 18:37:00,009 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 18:37:00,009 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:37:00,014 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:37:00,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:37:00 BoogieIcfgContainer [2018-10-24 18:37:00,015 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:37:00,016 INFO L168 Benchmark]: Toolchain (without parser) took 249630.42 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -242.7 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-24 18:37:00,017 INFO L168 Benchmark]: CDTParser took 0.25 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 18:37:00,017 INFO L168 Benchmark]: CACSL2BoogieTranslator took 811.43 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-10-24 18:37:00,018 INFO L168 Benchmark]: Boogie Procedure Inliner took 268.96 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -850.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-24 18:37:00,019 INFO L168 Benchmark]: Boogie Preprocessor took 106.57 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2018-10-24 18:37:00,020 INFO L168 Benchmark]: RCFGBuilder took 3543.56 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 119.4 MB). Peak memory consumption was 119.4 MB. Max. memory is 7.1 GB. [2018-10-24 18:37:00,020 INFO L168 Benchmark]: TraceAbstraction took 244888.72 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 421.5 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-24 18:37:00,027 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 811.43 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 268.96 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -850.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.57 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3543.56 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 119.4 MB). Peak memory consumption was 119.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 244888.72 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 421.5 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 79). Cancelled while BasicCegarLoop was analyzing trace of length 432 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 7 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 244.8s OverallTime, 7 OverallIterations, 5 TraceHistogramMax, 106.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 939 SDtfs, 6973 SDslu, 1274 SDs, 0 SdLazy, 7589 SolverSat, 1695 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 50.3s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1204 GetRequests, 1089 SyntacticMatches, 25 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 8.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1767occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 120.9s AbstIntTime, 5 AbstIntIterations, 3 AbstIntStrong, 0.9951572250340467 AbsIntWeakeningRatio, 0.1093969144460028 AbsIntAvgWeakeningVarsNumRemoved, 586.757363253857 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 6 MinimizatonAttempts, 292 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 1293 NumberOfCodeBlocks, 1293 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1498 ConstructedInterpolants, 0 QuantifiedInterpolants, 3770423 SizeOfPredicates, 6 NumberOfNonLiveVariables, 394 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 691/978 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown