java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label45_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:02:26,543 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:02:26,545 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:02:26,558 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:02:26,559 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:02:26,560 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:02:26,561 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:02:26,563 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:02:26,565 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:02:26,566 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:02:26,567 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:02:26,567 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:02:26,568 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:02:26,569 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:02:26,571 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:02:26,571 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:02:26,572 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:02:26,574 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:02:26,577 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:02:26,582 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:02:26,586 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:02:26,588 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:02:26,593 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:02:26,608 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:02:26,608 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:02:26,610 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:02:26,611 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:02:26,611 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 21:02:26,645 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:02:26,645 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:02:26,646 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:02:26,647 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:02:26,647 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:02:26,647 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:02:26,647 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:02:26,648 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:02:26,648 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:02:26,648 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:02:26,648 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:02:26,648 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:02:26,649 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:02:26,649 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:02:26,649 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:02:26,650 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:02:26,651 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:02:26,651 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:02:26,651 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:02:26,651 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:02:26,652 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:02:26,652 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:02:26,652 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:02:26,652 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:02:26,653 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:02:26,653 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:02:26,653 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:02:26,653 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:02:26,653 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:02:26,654 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:02:26,654 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:02:26,654 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:02:26,654 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:02:26,654 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:02:26,703 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:02:26,716 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:02:26,720 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:02:26,722 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:02:26,722 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:02:26,723 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label45_true-unreach-call.c [2018-10-24 21:02:26,782 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ff8c50476/75d8e7b05b96484cadec29052baeca7a/FLAG356b358aa [2018-10-24 21:02:27,356 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:02:27,357 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label45_true-unreach-call.c [2018-10-24 21:02:27,380 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ff8c50476/75d8e7b05b96484cadec29052baeca7a/FLAG356b358aa [2018-10-24 21:02:27,403 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ff8c50476/75d8e7b05b96484cadec29052baeca7a [2018-10-24 21:02:27,417 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:02:27,419 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:02:27,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:02:27,421 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:02:27,428 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:02:27,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:02:27" (1/1) ... [2018-10-24 21:02:27,432 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34d4c9b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:02:27, skipping insertion in model container [2018-10-24 21:02:27,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:02:27" (1/1) ... [2018-10-24 21:02:27,444 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:02:27,531 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:02:28,011 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:02:28,020 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:02:28,173 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:02:28,190 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:02:28,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:02:28 WrapperNode [2018-10-24 21:02:28,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:02:28,193 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:02:28,193 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:02:28,193 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:02:28,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:02:28" (1/1) ... [2018-10-24 21:02:28,228 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:02:28" (1/1) ... [2018-10-24 21:02:28,406 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:02:28,407 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:02:28,407 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:02:28,407 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:02:28,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:02:28" (1/1) ... [2018-10-24 21:02:28,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:02:28" (1/1) ... [2018-10-24 21:02:28,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:02:28" (1/1) ... [2018-10-24 21:02:28,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:02:28" (1/1) ... [2018-10-24 21:02:28,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:02:28" (1/1) ... [2018-10-24 21:02:28,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:02:28" (1/1) ... [2018-10-24 21:02:28,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:02:28" (1/1) ... [2018-10-24 21:02:28,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:02:28,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:02:28,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:02:28,509 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:02:28,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:02:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:02:28,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:02:28,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:02:28,595 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:02:28,595 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:02:28,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:02:28,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:02:28,596 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:02:28,596 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:02:32,118 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:02:32,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:02:32 BoogieIcfgContainer [2018-10-24 21:02:32,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:02:32,121 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:02:32,121 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:02:32,125 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:02:32,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:02:27" (1/3) ... [2018-10-24 21:02:32,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff8d270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:02:32, skipping insertion in model container [2018-10-24 21:02:32,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:02:28" (2/3) ... [2018-10-24 21:02:32,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff8d270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:02:32, skipping insertion in model container [2018-10-24 21:02:32,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:02:32" (3/3) ... [2018-10-24 21:02:32,129 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label45_true-unreach-call.c [2018-10-24 21:02:32,138 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:02:32,146 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:02:32,164 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:02:32,202 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:02:32,203 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:02:32,203 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:02:32,203 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:02:32,203 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:02:32,204 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:02:32,204 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:02:32,205 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:02:32,231 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-24 21:02:32,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-24 21:02:32,241 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:02:32,242 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] [2018-10-24 21:02:32,245 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:02:32,251 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:02:32,251 INFO L82 PathProgramCache]: Analyzing trace with hash -2078467607, now seen corresponding path program 1 times [2018-10-24 21:02:32,253 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:02:32,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:02:32,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:02:32,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:02:32,306 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:02:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:02:32,775 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:02:32,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:02:32,838 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:02:32,839 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:02:32,840 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:02:32,850 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:02:32,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:02:32,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:02:32,870 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-10-24 21:02:35,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:02:35,031 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-10-24 21:02:35,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:02:35,035 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2018-10-24 21:02:35,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:02:35,054 INFO L225 Difference]: With dead ends: 574 [2018-10-24 21:02:35,054 INFO L226 Difference]: Without dead ends: 356 [2018-10-24 21:02:35,062 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:02:35,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-10-24 21:02:35,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-10-24 21:02:35,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-24 21:02:35,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 592 transitions. [2018-10-24 21:02:35,154 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 592 transitions. Word has length 45 [2018-10-24 21:02:35,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:02:35,155 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 592 transitions. [2018-10-24 21:02:35,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:02:35,156 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 592 transitions. [2018-10-24 21:02:35,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-24 21:02:35,162 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:02:35,163 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:02:35,163 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:02:35,164 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:02:35,164 INFO L82 PathProgramCache]: Analyzing trace with hash -2123203616, now seen corresponding path program 1 times [2018-10-24 21:02:35,164 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:02:35,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:02:35,169 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:02:35,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:02:35,169 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:02:35,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:02:35,455 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:02:35,456 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:02:35,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:02:35,456 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:02:35,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:02:35,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:02:35,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:02:35,459 INFO L87 Difference]: Start difference. First operand 356 states and 592 transitions. Second operand 6 states. [2018-10-24 21:02:38,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:02:38,028 INFO L93 Difference]: Finished difference Result 1002 states and 1689 transitions. [2018-10-24 21:02:38,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:02:38,029 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2018-10-24 21:02:38,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:02:38,037 INFO L225 Difference]: With dead ends: 1002 [2018-10-24 21:02:38,038 INFO L226 Difference]: Without dead ends: 652 [2018-10-24 21:02:38,042 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:02:38,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2018-10-24 21:02:38,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 640. [2018-10-24 21:02:38,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 640 states. [2018-10-24 21:02:38,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 960 transitions. [2018-10-24 21:02:38,086 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 960 transitions. Word has length 115 [2018-10-24 21:02:38,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:02:38,086 INFO L481 AbstractCegarLoop]: Abstraction has 640 states and 960 transitions. [2018-10-24 21:02:38,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:02:38,087 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 960 transitions. [2018-10-24 21:02:38,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-24 21:02:38,091 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:02:38,092 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:02:38,092 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:02:38,092 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:02:38,093 INFO L82 PathProgramCache]: Analyzing trace with hash -597678124, now seen corresponding path program 1 times [2018-10-24 21:02:38,093 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:02:38,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:02:38,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:02:38,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:02:38,094 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:02:38,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:02:38,539 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:02:38,540 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:02:38,540 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:02:38,541 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 126 with the following transitions: [2018-10-24 21:02:38,543 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [261], [263], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 21:02:38,614 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:02:38,614 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:02:41,368 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:02:52,910 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 21:02:52,912 INFO L272 AbstractInterpreter]: Visited 88 different actions 497 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 21:02:52,924 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:02:52,925 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 21:02:52,925 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:02:52,925 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 21:02:52,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:02:52,937 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 21:02:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:02:53,007 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 21:02:55,332 WARN L179 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 35 [2018-10-24 21:02:55,554 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:02:55,555 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 21:02:56,838 WARN L179 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2018-10-24 21:02:56,845 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:02:56,996 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:02:57,061 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:02:57,158 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:02:57,422 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:02:57,476 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:02:57,510 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:02:57,595 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:02:57,703 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:02:57,750 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:02:57,820 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:02:57,865 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:02:57,901 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:02:57,974 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:02:58,244 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:02:58,502 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:02:58,580 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:02:58,685 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:02:58,746 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:02:58,785 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:02:58,820 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:02:58,863 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:02:58,900 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:02:58,932 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:02:58,964 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:02:59,013 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:02:59,289 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:02:59,525 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:02:59,557 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:02:59,589 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:02:59,672 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:02:59,705 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:02:59,780 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:02:59,855 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:02:59,897 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:02:59,934 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:02:59,975 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:03:00,045 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:03:00,099 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:03:00,150 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:03:00,230 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:03:00,265 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:03:00,308 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:03:00,342 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:03:00,616 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:03:00,792 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:03:00,830 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:03:00,874 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:03:00,909 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:03:00,970 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:03:01,005 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:03:01,061 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:03:01,096 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:03:01,352 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:03:01,613 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:03:01,683 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:03:01,721 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:03:01,891 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:03:01,925 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:03:01,986 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:03:02,070 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:03:02,103 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:03:02,141 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:03:02,237 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:03:02,348 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:03:02,384 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:03:02,424 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:03:02,478 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:03:02,513 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:03:02,547 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:03:02,582 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:03:02,615 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-24 21:03:02,791 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:03:02,813 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-24 21:03:02,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-10-24 21:03:02,814 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:03:02,814 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:03:02,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:03:02,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2018-10-24 21:03:02,815 INFO L87 Difference]: Start difference. First operand 640 states and 960 transitions. Second operand 6 states. [2018-10-24 21:03:17,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:03:17,076 INFO L93 Difference]: Finished difference Result 2276 states and 3525 transitions. [2018-10-24 21:03:17,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 21:03:17,084 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-10-24 21:03:17,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:03:17,106 INFO L225 Difference]: With dead ends: 2276 [2018-10-24 21:03:17,106 INFO L226 Difference]: Without dead ends: 1642 [2018-10-24 21:03:17,113 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 174 SyntacticMatches, 73 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 621 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2018-10-24 21:03:17,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2018-10-24 21:03:17,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1632. [2018-10-24 21:03:17,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1632 states. [2018-10-24 21:03:17,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 2335 transitions. [2018-10-24 21:03:17,205 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 2335 transitions. Word has length 125 [2018-10-24 21:03:17,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:03:17,206 INFO L481 AbstractCegarLoop]: Abstraction has 1632 states and 2335 transitions. [2018-10-24 21:03:17,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:03:17,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 2335 transitions. [2018-10-24 21:03:17,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-24 21:03:17,222 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:03:17,223 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:03:17,224 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:03:17,225 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:03:17,225 INFO L82 PathProgramCache]: Analyzing trace with hash 786349999, now seen corresponding path program 1 times [2018-10-24 21:03:17,225 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:03:17,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:03:17,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:03:17,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:03:17,227 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:03:17,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:03:17,590 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:03:17,635 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-24 21:03:17,635 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:03:17,635 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:03:17,636 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 175 with the following transitions: [2018-10-24 21:03:17,636 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [261], [263], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [730], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 21:03:17,648 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:03:17,649 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:03:22,117 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:03:22,118 INFO L272 AbstractInterpreter]: Visited 133 different actions 133 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 21:03:22,126 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:03:22,126 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:03:25,385 INFO L232 lantSequenceWeakener]: Weakened 159 states. On average, predicates are now at 73.83% of their original sizes. [2018-10-24 21:03:25,386 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:03:32,297 INFO L413 sIntCurrentIteration]: We have 173 unified AI predicates [2018-10-24 21:03:32,297 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:03:32,298 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:03:32,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [4] total 13 [2018-10-24 21:03:32,298 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:03:32,299 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 21:03:32,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 21:03:32,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-24 21:03:32,300 INFO L87 Difference]: Start difference. First operand 1632 states and 2335 transitions. Second operand 11 states. [2018-10-24 21:03:45,564 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:04:40,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:04:40,535 INFO L93 Difference]: Finished difference Result 3407 states and 4915 transitions. [2018-10-24 21:04:40,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 21:04:40,536 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 174 [2018-10-24 21:04:40,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:04:40,546 INFO L225 Difference]: With dead ends: 3407 [2018-10-24 21:04:40,547 INFO L226 Difference]: Without dead ends: 1781 [2018-10-24 21:04:40,554 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 178 GetRequests, 119 SyntacticMatches, 45 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2018-10-24 21:04:40,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1781 states. [2018-10-24 21:04:40,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1781 to 1776. [2018-10-24 21:04:40,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1776 states. [2018-10-24 21:04:40,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1776 states to 1776 states and 2488 transitions. [2018-10-24 21:04:40,643 INFO L78 Accepts]: Start accepts. Automaton has 1776 states and 2488 transitions. Word has length 174 [2018-10-24 21:04:40,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:04:40,644 INFO L481 AbstractCegarLoop]: Abstraction has 1776 states and 2488 transitions. [2018-10-24 21:04:40,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-24 21:04:40,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1776 states and 2488 transitions. [2018-10-24 21:04:40,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-24 21:04:40,648 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:04:40,648 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:04:40,648 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:04:40,649 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:04:40,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1611504344, now seen corresponding path program 1 times [2018-10-24 21:04:40,649 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:04:40,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:04:40,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:04:40,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:04:40,650 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:04:40,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:04:40,936 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:04:41,192 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-24 21:04:41,193 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:04:41,193 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:04:41,193 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 184 with the following transitions: [2018-10-24 21:04:41,194 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [261], [263], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [766], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 21:04:41,201 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:04:41,201 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:04:45,038 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:04:53,454 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:04:53,455 INFO L272 AbstractInterpreter]: Visited 145 different actions 422 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 21:04:53,462 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:04:53,462 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:04:55,861 INFO L232 lantSequenceWeakener]: Weakened 174 states. On average, predicates are now at 73.8% of their original sizes. [2018-10-24 21:04:55,862 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:04:59,348 INFO L413 sIntCurrentIteration]: We have 182 unified AI predicates [2018-10-24 21:04:59,348 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:04:59,349 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:04:59,349 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [4] total 20 [2018-10-24 21:04:59,349 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:04:59,349 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-24 21:04:59,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-24 21:04:59,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2018-10-24 21:04:59,350 INFO L87 Difference]: Start difference. First operand 1776 states and 2488 transitions. Second operand 18 states. [2018-10-24 21:05:57,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:05:57,165 INFO L93 Difference]: Finished difference Result 3559 states and 5112 transitions. [2018-10-24 21:05:57,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-24 21:05:57,165 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 183 [2018-10-24 21:05:57,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:05:57,178 INFO L225 Difference]: With dead ends: 3559 [2018-10-24 21:05:57,179 INFO L226 Difference]: Without dead ends: 1933 [2018-10-24 21:05:57,187 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 200 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=248, Invalid=1012, Unknown=0, NotChecked=0, Total=1260 [2018-10-24 21:05:57,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1933 states. [2018-10-24 21:05:57,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1933 to 1924. [2018-10-24 21:05:57,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1924 states. [2018-10-24 21:05:57,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 2655 transitions. [2018-10-24 21:05:57,320 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 2655 transitions. Word has length 183 [2018-10-24 21:05:57,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:05:57,321 INFO L481 AbstractCegarLoop]: Abstraction has 1924 states and 2655 transitions. [2018-10-24 21:05:57,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-24 21:05:57,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 2655 transitions. [2018-10-24 21:05:57,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-10-24 21:05:57,326 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:05:57,326 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:05:57,327 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:05:57,327 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:05:57,327 INFO L82 PathProgramCache]: Analyzing trace with hash -302493013, now seen corresponding path program 1 times [2018-10-24 21:05:57,327 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:05:57,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:05:57,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:05:57,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:05:57,329 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:05:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:05:57,821 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:05:57,822 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:05:57,822 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:05:57,822 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 212 with the following transitions: [2018-10-24 21:05:57,822 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [261], [263], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [558], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 21:05:57,826 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:05:57,826 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:05:59,298 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:06:10,087 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 21:06:10,088 INFO L272 AbstractInterpreter]: Visited 95 different actions 539 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 21:06:10,093 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:06:10,093 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 21:06:10,093 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:06:10,093 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 21:06:10,102 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:06:10,102 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 21:06:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:06:10,166 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 21:06:10,328 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:06:10,328 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 21:06:10,570 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:06:10,592 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 21:06:10,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 15 [2018-10-24 21:06:10,592 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 21:06:10,593 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-24 21:06:10,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-24 21:06:10,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2018-10-24 21:06:10,594 INFO L87 Difference]: Start difference. First operand 1924 states and 2655 transitions. Second operand 14 states. Received shutdown request... [2018-10-24 21:06:12,403 WARN L187 SmtUtils]: Removed 11 from assertion stack [2018-10-24 21:06:12,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 21:06:12,404 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:06:12,409 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:06:12,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:06:12 BoogieIcfgContainer [2018-10-24 21:06:12,409 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:06:12,410 INFO L168 Benchmark]: Toolchain (without parser) took 224992.35 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 21:06:12,411 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:06:12,411 INFO L168 Benchmark]: CACSL2BoogieTranslator took 771.31 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:06:12,412 INFO L168 Benchmark]: Boogie Procedure Inliner took 214.21 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 712.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -792.2 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2018-10-24 21:06:12,414 INFO L168 Benchmark]: Boogie Preprocessor took 101.03 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:06:12,414 INFO L168 Benchmark]: RCFGBuilder took 3611.37 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 129.9 MB). Peak memory consumption was 129.9 MB. Max. memory is 7.1 GB. [2018-10-24 21:06:12,415 INFO L168 Benchmark]: TraceAbstraction took 220288.00 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.8 GB in the end (delta: -767.3 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-24 21:06:12,420 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 771.31 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 214.21 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 712.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -792.2 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 101.03 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3611.37 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 129.9 MB). Peak memory consumption was 129.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 220288.00 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.8 GB in the end (delta: -767.3 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 118]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 118). Cancelled while BasicCegarLoop was constructing difference of abstraction (1924states) and FLOYD_HOARE automaton (currently 12 states, 14 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 34. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 220.2s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 146.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 756 SDtfs, 4062 SDslu, 1227 SDs, 0 SdLazy, 6489 SolverSat, 1054 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 80.4s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 1099 GetRequests, 885 SyntacticMatches, 123 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1121 ImplicationChecksByTransitivity, 25.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1924occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 43.4s AbstIntTime, 4 AbstIntIterations, 2 AbstIntStrong, 0.9950347009593795 AbsIntWeakeningRatio, 0.11267605633802817 AbsIntAvgWeakeningVarsNumRemoved, 14.701408450704225 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 36 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 12.3s InterpolantComputationTime, 1189 NumberOfCodeBlocks, 1189 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1515 ConstructedInterpolants, 124 QuantifiedInterpolants, 1947992 SizeOfPredicates, 3 NumberOfNonLiveVariables, 651 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 571/696 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown