java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label21_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 19:12:23,284 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 19:12:23,287 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 19:12:23,304 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 19:12:23,304 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 19:12:23,306 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 19:12:23,308 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 19:12:23,310 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 19:12:23,314 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 19:12:23,316 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 19:12:23,318 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 19:12:23,319 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 19:12:23,320 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 19:12:23,321 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 19:12:23,322 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 19:12:23,323 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 19:12:23,324 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 19:12:23,326 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 19:12:23,330 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 19:12:23,334 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 19:12:23,335 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 19:12:23,337 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 19:12:23,342 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-12 19:12:23,355 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 19:12:23,355 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 19:12:23,357 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 19:12:23,358 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 19:12:23,358 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 19:12:23,388 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 19:12:23,388 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 19:12:23,390 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 19:12:23,390 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 19:12:23,390 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 19:12:23,391 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 19:12:23,391 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 19:12:23,391 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 19:12:23,391 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 19:12:23,392 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 19:12:23,392 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 19:12:23,392 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 19:12:23,392 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 19:12:23,393 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 19:12:23,393 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 19:12:23,393 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 19:12:23,395 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 19:12:23,395 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 19:12:23,395 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 19:12:23,395 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 19:12:23,395 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 19:12:23,396 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 19:12:23,396 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 19:12:23,396 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 19:12:23,396 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 19:12:23,396 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:12:23,397 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 19:12:23,397 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 19:12:23,397 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 19:12:23,398 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 19:12:23,398 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 19:12:23,398 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 19:12:23,398 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 19:12:23,398 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 19:12:23,399 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 19:12:23,468 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 19:12:23,481 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 19:12:23,486 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 19:12:23,488 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 19:12:23,488 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 19:12:23,489 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label21_true-unreach-call.c [2018-11-12 19:12:23,559 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e28031358/a237e52079a345e190138dc0ceb6308d/FLAGd6f3b19f6 [2018-11-12 19:12:24,305 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 19:12:24,306 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label21_true-unreach-call.c [2018-11-12 19:12:24,326 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e28031358/a237e52079a345e190138dc0ceb6308d/FLAGd6f3b19f6 [2018-11-12 19:12:24,343 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e28031358/a237e52079a345e190138dc0ceb6308d [2018-11-12 19:12:24,356 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 19:12:24,358 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 19:12:24,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 19:12:24,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 19:12:24,364 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 19:12:24,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:12:24" (1/1) ... [2018-11-12 19:12:24,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@425d5bf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:12:24, skipping insertion in model container [2018-11-12 19:12:24,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:12:24" (1/1) ... [2018-11-12 19:12:24,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 19:12:24,470 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 19:12:25,257 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:12:25,262 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 19:12:25,598 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:12:25,622 INFO L193 MainTranslator]: Completed translation [2018-11-12 19:12:25,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:12:25 WrapperNode [2018-11-12 19:12:25,623 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 19:12:25,624 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 19:12:25,624 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 19:12:25,625 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 19:12:25,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:12:25" (1/1) ... [2018-11-12 19:12:25,834 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:12:25" (1/1) ... [2018-11-12 19:12:25,844 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 19:12:25,845 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 19:12:25,845 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 19:12:25,845 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 19:12:25,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:12:25" (1/1) ... [2018-11-12 19:12:25,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:12:25" (1/1) ... [2018-11-12 19:12:25,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:12:25" (1/1) ... [2018-11-12 19:12:25,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:12:25" (1/1) ... [2018-11-12 19:12:25,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:12:25" (1/1) ... [2018-11-12 19:12:25,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:12:25" (1/1) ... [2018-11-12 19:12:26,006 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:12:25" (1/1) ... [2018-11-12 19:12:26,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 19:12:26,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 19:12:26,025 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 19:12:26,025 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 19:12:26,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:12:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-12 19:12:26,095 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 19:12:26,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 19:12:26,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 19:12:26,095 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 19:12:26,096 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 19:12:26,096 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 19:12:26,096 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 19:12:26,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 19:12:26,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 19:12:26,097 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 19:12:26,097 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 19:12:32,737 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 19:12:32,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:12:32 BoogieIcfgContainer [2018-11-12 19:12:32,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 19:12:32,739 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 19:12:32,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 19:12:32,744 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 19:12:32,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 07:12:24" (1/3) ... [2018-11-12 19:12:32,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bcfc29c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:12:32, skipping insertion in model container [2018-11-12 19:12:32,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:12:25" (2/3) ... [2018-11-12 19:12:32,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bcfc29c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:12:32, skipping insertion in model container [2018-11-12 19:12:32,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:12:32" (3/3) ... [2018-11-12 19:12:32,749 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label21_true-unreach-call.c [2018-11-12 19:12:32,758 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 19:12:32,767 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 19:12:32,781 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 19:12:32,830 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 19:12:32,831 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 19:12:32,831 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 19:12:32,831 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 19:12:32,831 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 19:12:32,831 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 19:12:32,832 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 19:12:32,832 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 19:12:32,874 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-12 19:12:32,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-11-12 19:12:32,886 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:12:32,887 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:12:32,889 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:12:32,894 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:12:32,895 INFO L82 PathProgramCache]: Analyzing trace with hash -191617687, now seen corresponding path program 1 times [2018-11-12 19:12:32,898 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:12:32,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:12:32,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:12:32,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:12:32,947 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:12:33,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:12:33,491 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-12 19:12:33,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:12:33,627 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:12:33,628 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 19:12:33,628 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:12:33,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 19:12:33,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 19:12:33,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:12:33,661 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-12 19:12:40,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:12:40,471 INFO L93 Difference]: Finished difference Result 1550 states and 2835 transitions. [2018-11-12 19:12:40,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 19:12:40,473 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2018-11-12 19:12:40,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:12:40,503 INFO L225 Difference]: With dead ends: 1550 [2018-11-12 19:12:40,503 INFO L226 Difference]: Without dead ends: 1106 [2018-11-12 19:12:40,513 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:12:40,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2018-11-12 19:12:40,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 762. [2018-11-12 19:12:40,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2018-11-12 19:12:40,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1263 transitions. [2018-11-12 19:12:40,640 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1263 transitions. Word has length 67 [2018-11-12 19:12:40,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:12:40,641 INFO L480 AbstractCegarLoop]: Abstraction has 762 states and 1263 transitions. [2018-11-12 19:12:40,641 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 19:12:40,641 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1263 transitions. [2018-11-12 19:12:40,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-11-12 19:12:40,658 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:12:40,658 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 19:12:40,659 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:12:40,659 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:12:40,659 INFO L82 PathProgramCache]: Analyzing trace with hash 2147224692, now seen corresponding path program 1 times [2018-11-12 19:12:40,659 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:12:40,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:12:40,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:12:40,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:12:40,661 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:12:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:12:40,949 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:12:40,950 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:12:40,950 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 19:12:40,950 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:12:40,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 19:12:40,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 19:12:40,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 19:12:40,953 INFO L87 Difference]: Start difference. First operand 762 states and 1263 transitions. Second operand 5 states. [2018-11-12 19:12:45,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:12:45,997 INFO L93 Difference]: Finished difference Result 2248 states and 3762 transitions. [2018-11-12 19:12:46,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 19:12:46,004 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2018-11-12 19:12:46,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:12:46,020 INFO L225 Difference]: With dead ends: 2248 [2018-11-12 19:12:46,020 INFO L226 Difference]: Without dead ends: 1492 [2018-11-12 19:12:46,025 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:12:46,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2018-11-12 19:12:46,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1457. [2018-11-12 19:12:46,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2018-11-12 19:12:46,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 2152 transitions. [2018-11-12 19:12:46,108 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 2152 transitions. Word has length 140 [2018-11-12 19:12:46,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:12:46,109 INFO L480 AbstractCegarLoop]: Abstraction has 1457 states and 2152 transitions. [2018-11-12 19:12:46,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 19:12:46,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 2152 transitions. [2018-11-12 19:12:46,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-11-12 19:12:46,120 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:12:46,120 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 19:12:46,125 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:12:46,125 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:12:46,125 INFO L82 PathProgramCache]: Analyzing trace with hash 245901444, now seen corresponding path program 1 times [2018-11-12 19:12:46,125 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:12:46,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:12:46,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:12:46,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:12:46,127 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:12:46,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:12:46,316 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:12:46,317 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:12:46,317 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 19:12:46,317 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:12:46,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 19:12:46,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 19:12:46,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:12:46,318 INFO L87 Difference]: Start difference. First operand 1457 states and 2152 transitions. Second operand 4 states. [2018-11-12 19:12:50,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:12:50,875 INFO L93 Difference]: Finished difference Result 5392 states and 8276 transitions. [2018-11-12 19:12:50,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 19:12:50,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2018-11-12 19:12:50,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:12:50,902 INFO L225 Difference]: With dead ends: 5392 [2018-11-12 19:12:50,902 INFO L226 Difference]: Without dead ends: 3941 [2018-11-12 19:12:50,916 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:12:50,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3941 states. [2018-11-12 19:12:51,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3941 to 3939. [2018-11-12 19:12:51,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3939 states. [2018-11-12 19:12:51,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3939 states to 3939 states and 5428 transitions. [2018-11-12 19:12:51,027 INFO L78 Accepts]: Start accepts. Automaton has 3939 states and 5428 transitions. Word has length 148 [2018-11-12 19:12:51,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:12:51,027 INFO L480 AbstractCegarLoop]: Abstraction has 3939 states and 5428 transitions. [2018-11-12 19:12:51,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 19:12:51,028 INFO L276 IsEmpty]: Start isEmpty. Operand 3939 states and 5428 transitions. [2018-11-12 19:12:51,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-11-12 19:12:51,038 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:12:51,038 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-12 19:12:51,038 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:12:51,039 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:12:51,039 INFO L82 PathProgramCache]: Analyzing trace with hash -724599134, now seen corresponding path program 1 times [2018-11-12 19:12:51,039 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:12:51,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:12:51,040 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:12:51,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:12:51,041 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:12:51,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:12:51,395 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:12:51,808 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 120 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:12:51,809 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:12:51,809 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:12:51,811 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 225 with the following transitions: [2018-11-12 19:12:51,813 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], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [509], [511], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [633], [638], [640], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:12:51,866 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:12:51,866 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:12:52,438 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:12:52,440 INFO L272 AbstractInterpreter]: Visited 90 different actions 90 times. Never merged. Never widened. Performed 819 root evaluator evaluations with a maximum evaluation depth of 4. Performed 819 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 19:12:52,465 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:12:52,465 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:12:53,003 INFO L227 lantSequenceWeakener]: Weakened 213 states. On average, predicates are now at 78.3% of their original sizes. [2018-11-12 19:12:53,004 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:12:53,201 INFO L415 sIntCurrentIteration]: We unified 223 AI predicates to 223 [2018-11-12 19:12:53,202 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:12:53,202 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:12:53,203 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-12 19:12:53,203 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:12:53,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 19:12:53,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 19:12:53,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 19:12:53,204 INFO L87 Difference]: Start difference. First operand 3939 states and 5428 transitions. Second operand 7 states. [2018-11-12 19:12:55,337 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:13:21,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:13:21,502 INFO L93 Difference]: Finished difference Result 8182 states and 11238 transitions. [2018-11-12 19:13:21,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:13:21,502 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 224 [2018-11-12 19:13:21,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:13:21,522 INFO L225 Difference]: With dead ends: 8182 [2018-11-12 19:13:21,522 INFO L226 Difference]: Without dead ends: 4249 [2018-11-12 19:13:21,539 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 224 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:13:21,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4249 states. [2018-11-12 19:13:21,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4249 to 4247. [2018-11-12 19:13:21,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4247 states. [2018-11-12 19:13:21,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4247 states to 4247 states and 5745 transitions. [2018-11-12 19:13:21,655 INFO L78 Accepts]: Start accepts. Automaton has 4247 states and 5745 transitions. Word has length 224 [2018-11-12 19:13:21,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:13:21,656 INFO L480 AbstractCegarLoop]: Abstraction has 4247 states and 5745 transitions. [2018-11-12 19:13:21,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 19:13:21,656 INFO L276 IsEmpty]: Start isEmpty. Operand 4247 states and 5745 transitions. [2018-11-12 19:13:21,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-11-12 19:13:21,668 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:13:21,668 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:13:21,668 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:13:21,669 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:13:21,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1857521012, now seen corresponding path program 1 times [2018-11-12 19:13:21,669 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:13:21,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:21,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:13:21,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:21,671 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:13:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:13:22,022 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:13:22,149 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 186 proven. 201 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-12 19:13:22,150 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:13:22,150 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:13:22,150 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 321 with the following transitions: [2018-11-12 19:13:22,151 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], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [509], [511], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [633], [638], [640], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:13:22,156 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:13:22,156 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:13:22,229 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:13:23,168 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:13:23,168 INFO L272 AbstractInterpreter]: Visited 105 different actions 699 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Performed 11574 root evaluator evaluations with a maximum evaluation depth of 6. Performed 11574 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:13:23,210 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:13:23,210 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:13:24,795 INFO L227 lantSequenceWeakener]: Weakened 77 states. On average, predicates are now at 78.22% of their original sizes. [2018-11-12 19:13:24,795 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:13:28,448 INFO L415 sIntCurrentIteration]: We unified 319 AI predicates to 319 [2018-11-12 19:13:28,449 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:13:28,449 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:13:28,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [6] total 19 [2018-11-12 19:13:28,450 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:13:28,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-12 19:13:28,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-12 19:13:28,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2018-11-12 19:13:28,452 INFO L87 Difference]: Start difference. First operand 4247 states and 5745 transitions. Second operand 15 states. [2018-11-12 19:13:54,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:13:54,225 INFO L93 Difference]: Finished difference Result 9648 states and 12932 transitions. [2018-11-12 19:13:54,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-12 19:13:54,225 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 320 [2018-11-12 19:13:54,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:13:54,255 INFO L225 Difference]: With dead ends: 9648 [2018-11-12 19:13:54,256 INFO L226 Difference]: Without dead ends: 5715 [2018-11-12 19:13:54,273 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 325 GetRequests, 183 SyntacticMatches, 123 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2018-11-12 19:13:54,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5715 states. [2018-11-12 19:13:54,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5715 to 5185. [2018-11-12 19:13:54,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5185 states. [2018-11-12 19:13:54,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 6727 transitions. [2018-11-12 19:13:54,412 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 6727 transitions. Word has length 320 [2018-11-12 19:13:54,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:13:54,413 INFO L480 AbstractCegarLoop]: Abstraction has 5185 states and 6727 transitions. [2018-11-12 19:13:54,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-12 19:13:54,413 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 6727 transitions. [2018-11-12 19:13:54,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-11-12 19:13:54,426 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:13:54,426 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:13:54,427 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:13:54,427 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:13:54,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1716200344, now seen corresponding path program 1 times [2018-11-12 19:13:54,428 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:13:54,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:54,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:13:54,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:54,429 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:13:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:13:55,264 WARN L179 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 11 [2018-11-12 19:13:55,658 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 5 [2018-11-12 19:13:55,891 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-12 19:13:55,891 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:13:55,891 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:13:55,892 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 425 with the following transitions: [2018-11-12 19:13:55,893 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], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [509], [511], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1581], [1585], [1589], [1593], [1597], [1601], [1612], [1616], [1620], [1623], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:13:55,911 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:13:55,911 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:13:56,213 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:13:57,433 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:13:57,433 INFO L272 AbstractInterpreter]: Visited 296 different actions 879 times. Merged at 7 different actions 15 times. Never widened. Performed 12990 root evaluator evaluations with a maximum evaluation depth of 6. Performed 12990 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 19:13:57,436 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:13:57,438 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:13:57,438 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:13:57,438 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-12 19:13:57,450 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:13:57,451 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:13:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:13:57,596 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:14:22,765 WARN L179 SmtUtils]: Spent 24.65 s on a formula simplification. DAG size of input: 472 DAG size of output: 156 [2018-11-12 19:14:25,515 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 9 proven. 114 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-12 19:14:25,516 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:14:25,976 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-12 19:14:25,997 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-12 19:14:25,997 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 11 [2018-11-12 19:14:25,997 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:14:26,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 19:14:26,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 19:14:26,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=77, Unknown=1, NotChecked=0, Total=110 [2018-11-12 19:14:26,001 INFO L87 Difference]: Start difference. First operand 5185 states and 6727 transitions. Second operand 3 states. [2018-11-12 19:14:28,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:14:28,268 INFO L93 Difference]: Finished difference Result 13796 states and 18710 transitions. [2018-11-12 19:14:28,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 19:14:28,268 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 424 [2018-11-12 19:14:28,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:14:28,301 INFO L225 Difference]: With dead ends: 13796 [2018-11-12 19:14:28,302 INFO L226 Difference]: Without dead ends: 6688 [2018-11-12 19:14:28,353 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 858 GetRequests, 845 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 28.2s TimeCoverageRelationStatistics Valid=32, Invalid=77, Unknown=1, NotChecked=0, Total=110 [2018-11-12 19:14:28,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6688 states. [2018-11-12 19:14:28,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6688 to 6688. [2018-11-12 19:14:28,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6688 states. [2018-11-12 19:14:28,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6688 states to 6688 states and 8261 transitions. [2018-11-12 19:14:28,523 INFO L78 Accepts]: Start accepts. Automaton has 6688 states and 8261 transitions. Word has length 424 [2018-11-12 19:14:28,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:14:28,524 INFO L480 AbstractCegarLoop]: Abstraction has 6688 states and 8261 transitions. [2018-11-12 19:14:28,525 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 19:14:28,525 INFO L276 IsEmpty]: Start isEmpty. Operand 6688 states and 8261 transitions. [2018-11-12 19:14:28,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2018-11-12 19:14:28,549 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:14:28,549 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:14:28,550 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:14:28,550 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:14:28,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1665276040, now seen corresponding path program 1 times [2018-11-12 19:14:28,550 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:14:28,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:14:28,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:14:28,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:14:28,552 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:14:28,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:14:29,374 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-12 19:14:30,854 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 188 proven. 226 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:14:30,855 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:14:30,855 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:14:30,856 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 503 with the following transitions: [2018-11-12 19:14:30,856 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], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [509], [511], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [609], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:14:30,862 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:14:30,862 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:14:31,115 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:14:31,336 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:14:31,336 INFO L272 AbstractInterpreter]: Visited 284 different actions 564 times. Merged at 5 different actions 7 times. Never widened. Performed 10381 root evaluator evaluations with a maximum evaluation depth of 6. Performed 10381 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:14:31,342 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:14:31,342 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:14:32,095 INFO L227 lantSequenceWeakener]: Weakened 52 states. On average, predicates are now at 78.21% of their original sizes. [2018-11-12 19:14:32,095 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:14:32,347 INFO L415 sIntCurrentIteration]: We unified 501 AI predicates to 501 [2018-11-12 19:14:32,347 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:14:32,347 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:14:32,348 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [14] total 27 [2018-11-12 19:14:32,348 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:14:32,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-12 19:14:32,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-12 19:14:32,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2018-11-12 19:14:32,350 INFO L87 Difference]: Start difference. First operand 6688 states and 8261 transitions. Second operand 15 states. [2018-11-12 19:15:15,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:15:15,325 INFO L93 Difference]: Finished difference Result 13375 states and 16657 transitions. [2018-11-12 19:15:15,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-12 19:15:15,325 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 502 [2018-11-12 19:15:15,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:15:15,357 INFO L225 Difference]: With dead ends: 13375 [2018-11-12 19:15:15,357 INFO L226 Difference]: Without dead ends: 7608 [2018-11-12 19:15:15,373 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 509 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2018-11-12 19:15:15,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7608 states. [2018-11-12 19:15:15,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7608 to 7000. [2018-11-12 19:15:15,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7000 states. [2018-11-12 19:15:15,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7000 states to 7000 states and 8579 transitions. [2018-11-12 19:15:15,531 INFO L78 Accepts]: Start accepts. Automaton has 7000 states and 8579 transitions. Word has length 502 [2018-11-12 19:15:15,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:15:15,532 INFO L480 AbstractCegarLoop]: Abstraction has 7000 states and 8579 transitions. [2018-11-12 19:15:15,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-12 19:15:15,532 INFO L276 IsEmpty]: Start isEmpty. Operand 7000 states and 8579 transitions. [2018-11-12 19:15:15,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2018-11-12 19:15:15,554 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:15:15,555 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:15:15,555 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:15:15,555 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:15:15,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1655585488, now seen corresponding path program 1 times [2018-11-12 19:15:15,556 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:15:15,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:15:15,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:15:15,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:15:15,557 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:15:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:15:16,382 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 339 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-12 19:15:16,382 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:15:16,382 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:15:16,383 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 534 with the following transitions: [2018-11-12 19:15:16,383 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], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [509], [511], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [609], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:15:16,388 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:15:16,389 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:15:16,553 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:15:17,705 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:15:17,705 INFO L272 AbstractInterpreter]: Visited 285 different actions 1127 times. Merged at 7 different actions 22 times. Never widened. Performed 17916 root evaluator evaluations with a maximum evaluation depth of 6. Performed 17916 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 19:15:17,709 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:15:17,709 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:15:17,709 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:15:17,709 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-12 19:15:17,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:15:17,720 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:15:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:15:17,876 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:15:18,162 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 339 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-12 19:15:18,162 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:15:18,387 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 339 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-12 19:15:18,408 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 19:15:18,408 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-12 19:15:18,408 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 19:15:18,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-12 19:15:18,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-12 19:15:18,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-12 19:15:18,410 INFO L87 Difference]: Start difference. First operand 7000 states and 8579 transitions. Second operand 9 states. [2018-11-12 19:15:26,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:15:26,337 INFO L93 Difference]: Finished difference Result 20398 states and 27669 transitions. [2018-11-12 19:15:26,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-12 19:15:26,340 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 533 [2018-11-12 19:15:26,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:15:26,427 INFO L225 Difference]: With dead ends: 20398 [2018-11-12 19:15:26,427 INFO L226 Difference]: Without dead ends: 14631 [2018-11-12 19:15:26,492 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1093 GetRequests, 1072 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2018-11-12 19:15:26,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14631 states. [2018-11-12 19:15:26,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14631 to 14597. [2018-11-12 19:15:26,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14597 states. [2018-11-12 19:15:26,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14597 states to 14597 states and 18375 transitions. [2018-11-12 19:15:26,917 INFO L78 Accepts]: Start accepts. Automaton has 14597 states and 18375 transitions. Word has length 533 [2018-11-12 19:15:26,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:15:26,918 INFO L480 AbstractCegarLoop]: Abstraction has 14597 states and 18375 transitions. [2018-11-12 19:15:26,918 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-12 19:15:26,918 INFO L276 IsEmpty]: Start isEmpty. Operand 14597 states and 18375 transitions. [2018-11-12 19:15:26,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2018-11-12 19:15:26,952 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:15:26,952 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:15:26,953 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:15:26,953 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:15:26,953 INFO L82 PathProgramCache]: Analyzing trace with hash 2118580752, now seen corresponding path program 1 times [2018-11-12 19:15:26,953 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:15:26,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:15:26,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:15:26,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:15:26,954 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:15:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:15:28,011 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 460 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-11-12 19:15:28,012 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:15:28,012 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:15:28,012 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 598 with the following transitions: [2018-11-12 19:15:28,013 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], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [509], [511], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [585], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:15:28,019 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:15:28,019 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:15:28,250 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:15:31,340 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:15:31,340 INFO L272 AbstractInterpreter]: Visited 286 different actions 2570 times. Merged at 9 different actions 86 times. Widened at 1 different actions 5 times. Performed 44866 root evaluator evaluations with a maximum evaluation depth of 6. Performed 44866 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 23 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-12 19:15:31,348 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:15:31,348 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:15:31,348 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:15:31,348 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 19:15:31,358 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:15:31,358 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:15:31,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:15:31,516 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:15:31,778 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 460 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-11-12 19:15:31,778 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:15:32,084 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 460 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-11-12 19:15:32,104 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 19:15:32,104 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2018-11-12 19:15:32,104 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 19:15:32,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:15:32,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:15:32,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 19:15:32,106 INFO L87 Difference]: Start difference. First operand 14597 states and 18375 transitions. Second operand 6 states. [2018-11-12 19:15:35,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:15:35,906 INFO L93 Difference]: Finished difference Result 35979 states and 48663 transitions. [2018-11-12 19:15:35,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-12 19:15:35,911 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 597 [2018-11-12 19:15:35,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:15:36,038 INFO L225 Difference]: With dead ends: 35979 [2018-11-12 19:15:36,038 INFO L226 Difference]: Without dead ends: 18247 [2018-11-12 19:15:36,172 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1206 GetRequests, 1195 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2018-11-12 19:15:36,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18247 states. [2018-11-12 19:15:36,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18247 to 17831. [2018-11-12 19:15:36,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17831 states. [2018-11-12 19:15:37,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17831 states to 17831 states and 21913 transitions. [2018-11-12 19:15:37,015 INFO L78 Accepts]: Start accepts. Automaton has 17831 states and 21913 transitions. Word has length 597 [2018-11-12 19:15:37,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:15:37,016 INFO L480 AbstractCegarLoop]: Abstraction has 17831 states and 21913 transitions. [2018-11-12 19:15:37,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:15:37,016 INFO L276 IsEmpty]: Start isEmpty. Operand 17831 states and 21913 transitions. [2018-11-12 19:15:37,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2018-11-12 19:15:37,060 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:15:37,061 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:15:37,061 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:15:37,061 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:15:37,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1277435654, now seen corresponding path program 1 times [2018-11-12 19:15:37,062 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:15:37,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:15:37,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:15:37,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:15:37,063 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:15:37,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:15:39,082 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 261 proven. 429 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-11-12 19:15:39,083 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:15:39,083 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:15:39,083 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 655 with the following transitions: [2018-11-12 19:15:39,084 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], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [509], [511], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [585], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [842], [847], [849], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:15:39,089 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:15:39,089 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:15:39,309 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:15:42,850 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:15:42,850 INFO L272 AbstractInterpreter]: Visited 288 different actions 2879 times. Merged at 9 different actions 104 times. Widened at 1 different actions 5 times. Performed 49937 root evaluator evaluations with a maximum evaluation depth of 6. Performed 49937 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 24 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 19:15:42,858 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:15:42,858 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:15:42,858 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:15:42,858 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 19:15:42,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:15:42,868 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:15:43,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:15:43,051 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:15:43,912 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 463 proven. 2 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2018-11-12 19:15:43,912 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:15:44,346 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 463 proven. 2 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2018-11-12 19:15:44,367 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 19:15:44,367 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2018-11-12 19:15:44,367 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 19:15:44,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-12 19:15:44,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-12 19:15:44,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2018-11-12 19:15:44,369 INFO L87 Difference]: Start difference. First operand 17831 states and 21913 transitions. Second operand 12 states. Received shutdown request... [2018-11-12 19:15:55,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-11-12 19:15:55,419 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 19:15:55,426 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 19:15:55,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 07:15:55 BoogieIcfgContainer [2018-11-12 19:15:55,426 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 19:15:55,427 INFO L168 Benchmark]: Toolchain (without parser) took 211070.61 ms. Allocated memory was 1.5 GB in the beginning and 5.3 GB in the end (delta: 3.7 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.2 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-11-12 19:15:55,428 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-11-12 19:15:55,429 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1265.10 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: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-11-12 19:15:55,429 INFO L168 Benchmark]: Boogie Procedure Inliner took 220.50 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 768.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -912.7 MB). Peak memory consumption was 31.2 MB. Max. memory is 7.1 GB. [2018-11-12 19:15:55,431 INFO L168 Benchmark]: Boogie Preprocessor took 179.10 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-11-12 19:15:55,431 INFO L168 Benchmark]: RCFGBuilder took 6714.04 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: 285.5 MB). Peak memory consumption was 285.5 MB. Max. memory is 7.1 GB. [2018-11-12 19:15:55,432 INFO L168 Benchmark]: TraceAbstraction took 202686.96 ms. Allocated memory was 2.3 GB in the beginning and 5.3 GB in the end (delta: 2.9 GB). Free memory was 1.9 GB in the beginning and 2.7 GB in the end (delta: -723.9 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-12 19:15:55,437 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 1265.10 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: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 220.50 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 768.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -912.7 MB). Peak memory consumption was 31.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 179.10 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6714.04 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: 285.5 MB). Peak memory consumption was 285.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 202686.96 ms. Allocated memory was 2.3 GB in the beginning and 5.3 GB in the end (delta: 2.9 GB). Free memory was 1.9 GB in the beginning and 2.7 GB in the end (delta: -723.9 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 187]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 187). Cancelled while BasicCegarLoop was constructing difference of abstraction (17831states) and FLOYD_HOARE automaton (currently 51 states, 12 states before enhancement),while ReachableStatesComputation was computing reachable states (15607 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 202.6s OverallTime, 10 OverallIterations, 5 TraceHistogramMax, 139.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3577 SDtfs, 19030 SDslu, 2814 SDs, 0 SdLazy, 32217 SolverSat, 4815 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 71.0s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 5637 GetRequests, 5355 SyntacticMatches, 134 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2364 ImplicationChecksByTransitivity, 36.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17831occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 12.1s AbstIntTime, 7 AbstIntIterations, 3 AbstIntStrong, 0.9975726742152586 AbsIntWeakeningRatio, 0.08820709491850431 AbsIntAvgWeakeningVarsNumRemoved, 15.22051773729626 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 1971 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 37.0s InterpolantComputationTime, 5817 NumberOfCodeBlocks, 5817 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 8007 ConstructedInterpolants, 63 QuantifiedInterpolants, 14385627 SizeOfPredicates, 4 NumberOfNonLiveVariables, 3127 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 18 InterpolantComputations, 4 PerfectInterpolantSequences, 6428/7602 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown