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/Problem17_label28_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:09:46,622 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:09:46,624 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:09:46,636 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:09:46,636 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:09:46,637 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:09:46,639 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:09:46,640 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:09:46,642 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:09:46,643 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:09:46,644 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:09:46,644 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:09:46,645 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:09:46,647 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:09:46,648 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:09:46,649 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:09:46,651 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:09:46,656 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:09:46,661 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:09:46,665 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:09:46,666 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:09:46,670 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:09:46,674 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 22:09:46,688 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 22:09:46,716 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:09:46,717 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:09:46,719 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:09:46,722 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:09:46,722 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:09:46,722 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:09:46,722 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:09:46,722 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:09:46,723 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:09:46,723 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:09:46,723 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:09:46,723 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:09:46,724 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:09:46,724 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:09:46,724 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:09:46,725 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:09:46,725 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:09:46,725 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:09:46,725 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:09:46,725 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:09:46,726 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:09:46,726 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:09:46,726 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:09:46,726 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:09:46,726 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:09:46,727 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:09:46,727 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:09:46,727 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:09:46,727 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:09:46,727 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:09:46,728 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:09:46,728 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:09:46,728 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:09:46,728 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:09:46,771 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:09:46,784 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:09:46,787 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:09:46,789 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:09:46,789 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:09:46,790 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label28_true-unreach-call.c [2018-10-24 22:09:46,848 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4db538692/c043751bccec477f83a0197101f21a05/FLAGa96c35fa7 [2018-10-24 22:09:47,587 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:09:47,588 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label28_true-unreach-call.c [2018-10-24 22:09:47,612 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4db538692/c043751bccec477f83a0197101f21a05/FLAGa96c35fa7 [2018-10-24 22:09:47,628 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4db538692/c043751bccec477f83a0197101f21a05 [2018-10-24 22:09:47,639 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:09:47,641 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:09:47,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:09:47,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:09:47,646 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:09:47,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:09:47" (1/1) ... [2018-10-24 22:09:47,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41d3a67d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:09:47, skipping insertion in model container [2018-10-24 22:09:47,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:09:47" (1/1) ... [2018-10-24 22:09:47,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:09:47,766 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:09:48,815 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:09:48,820 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:09:49,220 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:09:49,246 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:09:49,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:09:49 WrapperNode [2018-10-24 22:09:49,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:09:49,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:09:49,249 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:09:49,249 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:09:49,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:09:49" (1/1) ... [2018-10-24 22:09:49,323 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:09:49" (1/1) ... [2018-10-24 22:09:49,763 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:09:49,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:09:49,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:09:49,763 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:09:49,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:09:49" (1/1) ... [2018-10-24 22:09:49,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:09:49" (1/1) ... [2018-10-24 22:09:49,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:09:49" (1/1) ... [2018-10-24 22:09:49,801 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:09:49" (1/1) ... [2018-10-24 22:09:49,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:09:49" (1/1) ... [2018-10-24 22:09:49,947 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:09:49" (1/1) ... [2018-10-24 22:09:50,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:09:49" (1/1) ... [2018-10-24 22:09:50,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:09:50,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:09:50,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:09:50,075 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:09:50,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:09:49" (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 22:09:50,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:09:50,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:09:50,152 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 22:09:50,152 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 22:09:50,152 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:09:50,152 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:09:50,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:09:50,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:09:50,153 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:09:50,153 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:10:04,183 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:10:04,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:10:04 BoogieIcfgContainer [2018-10-24 22:10:04,184 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:10:04,186 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:10:04,186 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:10:04,189 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:10:04,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:09:47" (1/3) ... [2018-10-24 22:10:04,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34eaeb98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:10:04, skipping insertion in model container [2018-10-24 22:10:04,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:09:49" (2/3) ... [2018-10-24 22:10:04,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34eaeb98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:10:04, skipping insertion in model container [2018-10-24 22:10:04,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:10:04" (3/3) ... [2018-10-24 22:10:04,193 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label28_true-unreach-call.c [2018-10-24 22:10:04,204 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:10:04,214 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:10:04,233 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:10:04,277 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:10:04,277 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:10:04,277 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:10:04,277 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:10:04,277 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:10:04,278 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:10:04,278 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:10:04,278 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:10:04,315 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-24 22:10:04,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-24 22:10:04,326 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:10:04,327 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:10:04,330 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:10:04,336 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:10:04,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1044962550, now seen corresponding path program 1 times [2018-10-24 22:10:04,339 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:10:04,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:10:04,390 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:10:04,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:10:04,390 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:10:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:10:05,006 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 22:10:05,009 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:10:05,010 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:10:05,010 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:10:05,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:10:05,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:10:05,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:10:05,037 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-24 22:10:18,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:10:18,818 INFO L93 Difference]: Finished difference Result 2133 states and 3959 transitions. [2018-10-24 22:10:18,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:10:18,820 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2018-10-24 22:10:18,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:10:18,852 INFO L225 Difference]: With dead ends: 2133 [2018-10-24 22:10:18,852 INFO L226 Difference]: Without dead ends: 1523 [2018-10-24 22:10:18,865 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 22:10:18,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2018-10-24 22:10:19,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1516. [2018-10-24 22:10:19,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1516 states. [2018-10-24 22:10:19,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 2287 transitions. [2018-10-24 22:10:19,034 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 2287 transitions. Word has length 71 [2018-10-24 22:10:19,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:10:19,035 INFO L481 AbstractCegarLoop]: Abstraction has 1516 states and 2287 transitions. [2018-10-24 22:10:19,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:10:19,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 2287 transitions. [2018-10-24 22:10:19,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-24 22:10:19,051 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:10:19,052 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:10:19,053 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:10:19,053 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:10:19,053 INFO L82 PathProgramCache]: Analyzing trace with hash 497854657, now seen corresponding path program 1 times [2018-10-24 22:10:19,053 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:10:19,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:10:19,056 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:10:19,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:10:19,056 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:10:19,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:10:19,742 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:10:19,743 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:10:19,743 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:10:19,744 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 147 with the following transitions: [2018-10-24 22:10:19,746 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1118], [1126], [1134], [1142], [1150], [1158], [1166], [1174], [1178], [1180], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 22:10:19,812 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:10:19,813 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:10:21,370 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:10:39,790 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 22:10:39,791 INFO L272 AbstractInterpreter]: Visited 83 different actions 544 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 22:10:39,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:10:39,820 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 22:10:39,820 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:10:39,821 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 22:10:39,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:10:39,830 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 22:10:39,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:10:39,918 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 22:11:08,820 WARN L179 SmtUtils]: Spent 24.34 s on a formula simplification. DAG size of input: 135 DAG size of output: 98 [2018-10-24 22:11:29,177 WARN L179 SmtUtils]: Spent 16.09 s on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2018-10-24 22:11:29,889 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 4 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:11:29,889 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 22:11:30,347 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-10-24 22:11:34,688 WARN L179 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 133 DAG size of output: 16 [2018-10-24 22:11:34,733 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2018-10-24 22:11:37,352 WARN L179 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 26 [2018-10-24 22:11:37,699 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:11:37,731 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-24 22:11:37,731 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-10-24 22:11:37,732 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:11:37,733 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:11:37,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:11:37,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=160, Unknown=5, NotChecked=0, Total=210 [2018-10-24 22:11:37,734 INFO L87 Difference]: Start difference. First operand 1516 states and 2287 transitions. Second operand 6 states. [2018-10-24 22:13:05,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:13:05,745 INFO L93 Difference]: Finished difference Result 5751 states and 8968 transitions. [2018-10-24 22:13:05,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 22:13:05,746 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-10-24 22:13:05,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:13:05,782 INFO L225 Difference]: With dead ends: 5751 [2018-10-24 22:13:05,782 INFO L226 Difference]: Without dead ends: 4241 [2018-10-24 22:13:05,798 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 286 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 56.6s TimeCoverageRelationStatistics Valid=45, Invalid=160, Unknown=5, NotChecked=0, Total=210 [2018-10-24 22:13:05,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4241 states. [2018-10-24 22:13:05,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4241 to 4192. [2018-10-24 22:13:05,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4192 states. [2018-10-24 22:13:05,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4192 states to 4192 states and 6143 transitions. [2018-10-24 22:13:05,930 INFO L78 Accepts]: Start accepts. Automaton has 4192 states and 6143 transitions. Word has length 146 [2018-10-24 22:13:05,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:13:05,931 INFO L481 AbstractCegarLoop]: Abstraction has 4192 states and 6143 transitions. [2018-10-24 22:13:05,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:13:05,931 INFO L276 IsEmpty]: Start isEmpty. Operand 4192 states and 6143 transitions. [2018-10-24 22:13:05,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-10-24 22:13:05,938 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:13:05,938 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 22:13:05,938 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:13:05,939 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:13:05,939 INFO L82 PathProgramCache]: Analyzing trace with hash -977557274, now seen corresponding path program 1 times [2018-10-24 22:13:05,939 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:13:05,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:13:05,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:13:05,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:13:05,940 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:13:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:13:06,282 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:13:06,283 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:13:06,283 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:13:06,283 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:13:06,284 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:13:06,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:13:06,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:13:06,285 INFO L87 Difference]: Start difference. First operand 4192 states and 6143 transitions. Second operand 6 states. [2018-10-24 22:13:12,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:13:12,812 INFO L93 Difference]: Finished difference Result 12516 states and 19216 transitions. [2018-10-24 22:13:12,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:13:12,819 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 187 [2018-10-24 22:13:12,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:13:12,888 INFO L225 Difference]: With dead ends: 12516 [2018-10-24 22:13:12,888 INFO L226 Difference]: Without dead ends: 8330 [2018-10-24 22:13:12,908 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 22:13:12,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8330 states. [2018-10-24 22:13:13,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8330 to 8271. [2018-10-24 22:13:13,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8271 states. [2018-10-24 22:13:13,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8271 states to 8271 states and 11705 transitions. [2018-10-24 22:13:13,169 INFO L78 Accepts]: Start accepts. Automaton has 8271 states and 11705 transitions. Word has length 187 [2018-10-24 22:13:13,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:13:13,170 INFO L481 AbstractCegarLoop]: Abstraction has 8271 states and 11705 transitions. [2018-10-24 22:13:13,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:13:13,171 INFO L276 IsEmpty]: Start isEmpty. Operand 8271 states and 11705 transitions. [2018-10-24 22:13:13,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-10-24 22:13:13,183 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:13:13,184 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 22:13:13,184 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:13:13,184 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:13:13,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1079988822, now seen corresponding path program 1 times [2018-10-24 22:13:13,184 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:13:13,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:13:13,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:13:13,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:13:13,186 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:13:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:13:13,907 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:13:13,907 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:13:13,907 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-24 22:13:13,907 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:13:13,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 22:13:13,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 22:13:13,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 22:13:13,909 INFO L87 Difference]: Start difference. First operand 8271 states and 11705 transitions. Second operand 7 states. [2018-10-24 22:13:40,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:13:40,272 INFO L93 Difference]: Finished difference Result 24266 states and 39828 transitions. [2018-10-24 22:13:40,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 22:13:40,274 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2018-10-24 22:13:40,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:13:40,450 INFO L225 Difference]: With dead ends: 24266 [2018-10-24 22:13:40,450 INFO L226 Difference]: Without dead ends: 16001 [2018-10-24 22:13:40,537 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 22:13:40,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16001 states. [2018-10-24 22:13:41,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16001 to 15753. [2018-10-24 22:13:41,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15753 states. [2018-10-24 22:13:41,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15753 states to 15753 states and 23982 transitions. [2018-10-24 22:13:41,156 INFO L78 Accepts]: Start accepts. Automaton has 15753 states and 23982 transitions. Word has length 205 [2018-10-24 22:13:41,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:13:41,157 INFO L481 AbstractCegarLoop]: Abstraction has 15753 states and 23982 transitions. [2018-10-24 22:13:41,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 22:13:41,157 INFO L276 IsEmpty]: Start isEmpty. Operand 15753 states and 23982 transitions. [2018-10-24 22:13:41,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-10-24 22:13:41,170 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:13:41,170 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 22:13:41,170 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:13:41,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:13:41,171 INFO L82 PathProgramCache]: Analyzing trace with hash 327547341, now seen corresponding path program 1 times [2018-10-24 22:13:41,171 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:13:41,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:13:41,172 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:13:41,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:13:41,172 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:13:41,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:13:41,502 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:13:41,735 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 129 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-24 22:13:41,735 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:13:41,735 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:13:41,735 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 230 with the following transitions: [2018-10-24 22:13:41,736 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1118], [1126], [1134], [1142], [1150], [1158], [1166], [1174], [1178], [1180], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1262], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 22:13:41,741 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:13:41,742 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:13:42,881 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 22:13:54,667 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-24 22:13:54,667 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-24 22:13:54,668 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 22:13:54,668 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:13:54,668 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 22:13:54,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:13:54,679 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 22:13:54,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:13:54,767 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 22:13:54,781 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 22:13:54,982 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 22:13:54,982 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:13:54,987 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:13:54,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:13:54 BoogieIcfgContainer [2018-10-24 22:13:54,988 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:13:54,993 INFO L168 Benchmark]: Toolchain (without parser) took 247353.26 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -373.6 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-24 22:13:54,994 INFO L168 Benchmark]: CDTParser took 0.19 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 22:13:54,995 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1605.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. [2018-10-24 22:13:54,995 INFO L168 Benchmark]: Boogie Procedure Inliner took 514.51 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 762.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -908.8 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-24 22:13:55,001 INFO L168 Benchmark]: Boogie Preprocessor took 311.55 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. [2018-10-24 22:13:55,007 INFO L168 Benchmark]: RCFGBuilder took 14109.73 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 484.2 MB). Peak memory consumption was 484.2 MB. Max. memory is 7.1 GB. [2018-10-24 22:13:55,008 INFO L168 Benchmark]: TraceAbstraction took 230806.05 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 1.8 GB in the end (delta: -105.3 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-24 22:13:55,013 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 1605.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 514.51 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 762.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -908.8 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 311.55 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14109.73 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 484.2 MB). Peak memory consumption was 484.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230806.05 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 1.8 GB in the end (delta: -105.3 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 200]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 200). Cancelled while BasicCegarLoop was analyzing trace of length 230 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 230.7s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 135.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1152 SDtfs, 7624 SDslu, 1322 SDs, 0 SdLazy, 14667 SolverSat, 4146 SolverUnsat, 29 SolverUnknown, 0 SolverNotchecked, 128.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 327 GetRequests, 295 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 57.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15753occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 33.0s AbstIntTime, 2 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 363 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 59.6s InterpolantComputationTime, 755 NumberOfCodeBlocks, 755 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 895 ConstructedInterpolants, 145 QuantifiedInterpolants, 2474153 SizeOfPredicates, 3 NumberOfNonLiveVariables, 298 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 196/320 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown