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_label33_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 00:56:04,538 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 00:56:04,541 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 00:56:04,553 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 00:56:04,553 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 00:56:04,554 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 00:56:04,555 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 00:56:04,557 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 00:56:04,559 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 00:56:04,560 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 00:56:04,561 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 00:56:04,561 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 00:56:04,562 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 00:56:04,563 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 00:56:04,564 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 00:56:04,565 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 00:56:04,566 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 00:56:04,568 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 00:56:04,570 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 00:56:04,571 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 00:56:04,572 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 00:56:04,574 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 00:56:04,576 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 00:56:04,576 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 00:56:04,577 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 00:56:04,577 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 00:56:04,578 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 00:56:04,579 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 00:56:04,580 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 00:56:04,581 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 00:56:04,581 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 00:56:04,582 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 00:56:04,585 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 00:56:04,604 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 00:56:04,604 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 00:56:04,606 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 00:56:04,606 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 00:56:04,607 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 00:56:04,607 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 00:56:04,607 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 00:56:04,607 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 00:56:04,607 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 00:56:04,608 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 00:56:04,608 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 00:56:04,608 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 00:56:04,609 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 00:56:04,609 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 00:56:04,609 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 00:56:04,609 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 00:56:04,609 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 00:56:04,609 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 00:56:04,610 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 00:56:04,610 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 00:56:04,610 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 00:56:04,610 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 00:56:04,610 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 00:56:04,611 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 00:56:04,611 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 00:56:04,611 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 00:56:04,611 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 00:56:04,611 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 00:56:04,611 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 00:56:04,612 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 00:56:04,612 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 00:56:04,612 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 00:56:04,612 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 00:56:04,613 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 00:56:04,660 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 00:56:04,675 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 00:56:04,679 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 00:56:04,681 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 00:56:04,681 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 00:56:04,682 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label33_true-unreach-call.c [2018-10-24 00:56:04,742 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fd90ce570/3a7d325c53fa474c98971f01303cb2d6/FLAGbf1e8dd19 [2018-10-24 00:56:05,303 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 00:56:05,304 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label33_true-unreach-call.c [2018-10-24 00:56:05,330 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fd90ce570/3a7d325c53fa474c98971f01303cb2d6/FLAGbf1e8dd19 [2018-10-24 00:56:05,351 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fd90ce570/3a7d325c53fa474c98971f01303cb2d6 [2018-10-24 00:56:05,364 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 00:56:05,366 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 00:56:05,367 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 00:56:05,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 00:56:05,374 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 00:56:05,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:56:05" (1/1) ... [2018-10-24 00:56:05,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c19d582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:56:05, skipping insertion in model container [2018-10-24 00:56:05,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:56:05" (1/1) ... [2018-10-24 00:56:05,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 00:56:05,467 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 00:56:05,944 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 00:56:05,949 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 00:56:06,073 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 00:56:06,094 INFO L193 MainTranslator]: Completed translation [2018-10-24 00:56:06,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:56:06 WrapperNode [2018-10-24 00:56:06,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 00:56:06,096 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 00:56:06,096 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 00:56:06,096 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 00:56:06,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:56:06" (1/1) ... [2018-10-24 00:56:06,125 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:56:06" (1/1) ... [2018-10-24 00:56:06,283 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 00:56:06,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 00:56:06,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 00:56:06,283 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 00:56:06,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:56:06" (1/1) ... [2018-10-24 00:56:06,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:56:06" (1/1) ... [2018-10-24 00:56:06,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:56:06" (1/1) ... [2018-10-24 00:56:06,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:56:06" (1/1) ... [2018-10-24 00:56:06,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:56:06" (1/1) ... [2018-10-24 00:56:06,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:56:06" (1/1) ... [2018-10-24 00:56:06,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:56:06" (1/1) ... [2018-10-24 00:56:06,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 00:56:06,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 00:56:06,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 00:56:06,391 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 00:56:06,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:56:06" (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 00:56:06,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 00:56:06,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 00:56:06,468 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 00:56:06,468 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 00:56:06,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 00:56:06,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 00:56:06,469 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 00:56:06,469 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 00:56:10,113 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 00:56:10,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:56:10 BoogieIcfgContainer [2018-10-24 00:56:10,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 00:56:10,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 00:56:10,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 00:56:10,119 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 00:56:10,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:56:05" (1/3) ... [2018-10-24 00:56:10,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c325f0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:56:10, skipping insertion in model container [2018-10-24 00:56:10,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:56:06" (2/3) ... [2018-10-24 00:56:10,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c325f0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:56:10, skipping insertion in model container [2018-10-24 00:56:10,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:56:10" (3/3) ... [2018-10-24 00:56:10,123 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label33_true-unreach-call.c [2018-10-24 00:56:10,133 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 00:56:10,141 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 00:56:10,159 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 00:56:10,198 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 00:56:10,198 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 00:56:10,198 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 00:56:10,198 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 00:56:10,199 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 00:56:10,199 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 00:56:10,199 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 00:56:10,199 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 00:56:10,225 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-24 00:56:10,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-24 00:56:10,235 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:56:10,236 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] [2018-10-24 00:56:10,239 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:56:10,244 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:56:10,245 INFO L82 PathProgramCache]: Analyzing trace with hash 2083208225, now seen corresponding path program 1 times [2018-10-24 00:56:10,247 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:56:10,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:56:10,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:56:10,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:56:10,295 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:56:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:56:10,774 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 00:56:10,777 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 00:56:10,778 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 00:56:10,778 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:56:10,785 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 00:56:10,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 00:56:10,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 00:56:10,810 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 4 states. [2018-10-24 00:56:13,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 00:56:13,794 INFO L93 Difference]: Finished difference Result 737 states and 1298 transitions. [2018-10-24 00:56:13,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 00:56:13,796 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2018-10-24 00:56:13,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 00:56:13,822 INFO L225 Difference]: With dead ends: 737 [2018-10-24 00:56:13,822 INFO L226 Difference]: Without dead ends: 515 [2018-10-24 00:56:13,830 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 00:56:13,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2018-10-24 00:56:13,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 356. [2018-10-24 00:56:13,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-24 00:56:13,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 579 transitions. [2018-10-24 00:56:13,918 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 579 transitions. Word has length 51 [2018-10-24 00:56:13,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 00:56:13,919 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 579 transitions. [2018-10-24 00:56:13,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 00:56:13,919 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 579 transitions. [2018-10-24 00:56:13,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-24 00:56:13,927 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:56:13,928 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:56:13,928 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:56:13,928 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:56:13,928 INFO L82 PathProgramCache]: Analyzing trace with hash 273231611, now seen corresponding path program 1 times [2018-10-24 00:56:13,929 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:56:13,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:56:13,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:56:13,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:56:13,930 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:56:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:56:14,267 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 00:56:14,267 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 00:56:14,268 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 00:56:14,268 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:56:14,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 00:56:14,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 00:56:14,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 00:56:14,271 INFO L87 Difference]: Start difference. First operand 356 states and 579 transitions. Second operand 6 states. [2018-10-24 00:56:16,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 00:56:16,984 INFO L93 Difference]: Finished difference Result 1259 states and 2162 transitions. [2018-10-24 00:56:16,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 00:56:16,986 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2018-10-24 00:56:16,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 00:56:16,999 INFO L225 Difference]: With dead ends: 1259 [2018-10-24 00:56:16,999 INFO L226 Difference]: Without dead ends: 909 [2018-10-24 00:56:17,004 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 00:56:17,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2018-10-24 00:56:17,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 895. [2018-10-24 00:56:17,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 895 states. [2018-10-24 00:56:17,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1370 transitions. [2018-10-24 00:56:17,103 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1370 transitions. Word has length 126 [2018-10-24 00:56:17,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 00:56:17,104 INFO L481 AbstractCegarLoop]: Abstraction has 895 states and 1370 transitions. [2018-10-24 00:56:17,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 00:56:17,104 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1370 transitions. [2018-10-24 00:56:17,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-24 00:56:17,119 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:56:17,121 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:56:17,121 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:56:17,121 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:56:17,121 INFO L82 PathProgramCache]: Analyzing trace with hash 784908603, now seen corresponding path program 1 times [2018-10-24 00:56:17,122 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:56:17,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:56:17,124 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:56:17,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:56:17,124 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:56:17,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:56:17,419 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-24 00:56:17,419 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 00:56:17,419 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 00:56:17,421 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 159 with the following transitions: [2018-10-24 00:56:17,423 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], [265], [273], [281], [289], [297], [305], [309], [311], [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], [642], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 00:56:17,500 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 00:56:17,500 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 00:56:21,239 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 00:56:21,240 INFO L272 AbstractInterpreter]: Visited 111 different actions 111 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 00:56:21,279 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:56:21,280 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 00:56:23,728 INFO L232 lantSequenceWeakener]: Weakened 143 states. On average, predicates are now at 74.14% of their original sizes. [2018-10-24 00:56:23,729 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 00:56:30,352 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 00:56:30,354 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 00:56:30,354 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 12 [2018-10-24 00:56:30,354 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:56:30,355 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 00:56:30,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 00:56:30,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-24 00:56:30,356 INFO L87 Difference]: Start difference. First operand 895 states and 1370 transitions. Second operand 10 states. [2018-10-24 00:56:42,594 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 00:57:22,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 00:57:22,092 INFO L93 Difference]: Finished difference Result 1933 states and 2971 transitions. [2018-10-24 00:57:22,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 00:57:22,093 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 158 [2018-10-24 00:57:22,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 00:57:22,099 INFO L225 Difference]: With dead ends: 1933 [2018-10-24 00:57:22,099 INFO L226 Difference]: Without dead ends: 1044 [2018-10-24 00:57:22,103 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 161 GetRequests, 113 SyntacticMatches, 36 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-10-24 00:57:22,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2018-10-24 00:57:22,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 1039. [2018-10-24 00:57:22,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2018-10-24 00:57:22,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1521 transitions. [2018-10-24 00:57:22,162 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1521 transitions. Word has length 158 [2018-10-24 00:57:22,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 00:57:22,163 INFO L481 AbstractCegarLoop]: Abstraction has 1039 states and 1521 transitions. [2018-10-24 00:57:22,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-24 00:57:22,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1521 transitions. [2018-10-24 00:57:22,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-10-24 00:57:22,170 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:57:22,171 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, 2, 2, 2, 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] [2018-10-24 00:57:22,171 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:57:22,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:57:22,172 INFO L82 PathProgramCache]: Analyzing trace with hash 732780905, now seen corresponding path program 1 times [2018-10-24 00:57:22,172 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:57:22,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:57:22,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:57:22,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:57:22,173 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:57:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:57:22,526 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 00:57:22,850 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-10-24 00:57:22,851 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 00:57:22,851 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 00:57:22,852 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 230 with the following transitions: [2018-10-24 00:57:22,852 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], [265], [273], [281], [289], [297], [305], [309], [311], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [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], [642], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 00:57:22,858 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 00:57:22,859 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 00:57:24,192 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 00:57:38,921 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 00:57:38,921 INFO L272 AbstractInterpreter]: Visited 115 different actions 660 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 00:57:38,930 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:57:38,930 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 00:57:41,415 INFO L232 lantSequenceWeakener]: Weakened 56 states. On average, predicates are now at 76.36% of their original sizes. [2018-10-24 00:57:41,415 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 00:57:56,493 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 00:57:56,493 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 00:57:56,493 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [4] total 18 [2018-10-24 00:57:56,493 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:57:56,494 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-24 00:57:56,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-24 00:57:56,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2018-10-24 00:57:56,495 INFO L87 Difference]: Start difference. First operand 1039 states and 1521 transitions. Second operand 16 states. [2018-10-24 00:59:30,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 00:59:30,316 INFO L93 Difference]: Finished difference Result 2313 states and 3493 transitions. [2018-10-24 00:59:30,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-24 00:59:30,317 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 229 [2018-10-24 00:59:30,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 00:59:30,325 INFO L225 Difference]: With dead ends: 2313 [2018-10-24 00:59:30,325 INFO L226 Difference]: Without dead ends: 1424 [2018-10-24 00:59:30,329 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 236 GetRequests, 192 SyntacticMatches, 22 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2018-10-24 00:59:30,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2018-10-24 00:59:30,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 1339. [2018-10-24 00:59:30,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1339 states. [2018-10-24 00:59:30,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 1854 transitions. [2018-10-24 00:59:30,445 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 1854 transitions. Word has length 229 [2018-10-24 00:59:30,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 00:59:30,447 INFO L481 AbstractCegarLoop]: Abstraction has 1339 states and 1854 transitions. [2018-10-24 00:59:30,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-24 00:59:30,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 1854 transitions. [2018-10-24 00:59:30,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-24 00:59:30,453 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:59:30,453 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 00:59:30,453 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:59:30,454 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:59:30,454 INFO L82 PathProgramCache]: Analyzing trace with hash -41601264, now seen corresponding path program 1 times [2018-10-24 00:59:30,454 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:59:30,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:59:30,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:59:30,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:59:30,456 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:59:30,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:59:30,844 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 89 proven. 6 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-24 00:59:30,844 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 00:59:30,845 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 00:59:30,845 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 239 with the following transitions: [2018-10-24 00:59:30,845 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], [265], [273], [281], [289], [297], [305], [309], [311], [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], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [642], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 00:59:30,849 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 00:59:30,850 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 00:59:32,371 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 00:59:47,410 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-24 00:59:47,410 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-24 00:59:47,411 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 00:59:47,412 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 00:59:47,412 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 00:59:47,419 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:59:47,420 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 00:59:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:59:47,520 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 00:59:47,560 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 00:59:47,761 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 00:59:47,762 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 00:59:47,767 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 00:59:47,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:59:47 BoogieIcfgContainer [2018-10-24 00:59:47,768 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 00:59:47,768 INFO L168 Benchmark]: Toolchain (without parser) took 222403.84 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 573.4 MB. Max. memory is 7.1 GB. [2018-10-24 00:59:47,770 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 00:59:47,770 INFO L168 Benchmark]: CACSL2BoogieTranslator took 727.77 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 00:59:47,771 INFO L168 Benchmark]: Boogie Procedure Inliner took 187.16 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -825.8 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2018-10-24 00:59:47,772 INFO L168 Benchmark]: Boogie Preprocessor took 107.59 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 00:59:47,772 INFO L168 Benchmark]: RCFGBuilder took 3723.19 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 117.5 MB). Peak memory consumption was 117.5 MB. Max. memory is 7.1 GB. [2018-10-24 00:59:47,773 INFO L168 Benchmark]: TraceAbstraction took 217652.43 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 508.1 MB. Max. memory is 7.1 GB. [2018-10-24 00:59:47,778 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 727.77 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 187.16 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -825.8 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.59 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3723.19 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 117.5 MB). Peak memory consumption was 117.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 217652.43 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 508.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 136]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 136). Cancelled while BasicCegarLoop was analyzing trace of length 239 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 8 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 217.5s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 151.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 629 SDtfs, 3284 SDslu, 619 SDs, 0 SdLazy, 3765 SolverSat, 799 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 78.7s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 413 GetRequests, 311 SyntacticMatches, 59 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 23.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1339occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 36.5s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.9947581404103143 AbsIntWeakeningRatio, 0.11948051948051948 AbsIntAvgWeakeningVarsNumRemoved, 91.59220779220779 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 263 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 564 NumberOfCodeBlocks, 564 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 560 ConstructedInterpolants, 0 QuantifiedInterpolants, 330829 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 127/247 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown