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/Problem18_label42_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:20:38,215 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:20:38,217 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:20:38,230 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:20:38,230 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:20:38,233 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:20:38,234 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:20:38,244 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:20:38,246 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:20:38,249 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:20:38,250 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:20:38,250 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:20:38,253 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:20:38,254 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:20:38,256 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:20:38,257 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:20:38,258 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:20:38,260 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:20:38,262 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:20:38,263 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:20:38,265 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:20:38,266 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:20:38,271 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 22:20:38,285 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 22:20:38,285 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 22:20:38,288 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 22:20:38,289 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 22:20:38,290 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 22:20:38,307 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:20:38,308 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:20:38,309 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:20:38,309 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:20:38,309 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:20:38,309 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:20:38,310 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:20:38,310 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:20:38,310 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:20:38,310 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:20:38,310 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:20:38,311 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:20:38,311 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:20:38,312 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:20:38,312 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:20:38,312 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:20:38,312 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:20:38,312 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:20:38,313 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:20:38,313 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:20:38,313 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:20:38,313 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:20:38,313 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:20:38,314 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:20:38,314 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:20:38,314 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:20:38,314 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:20:38,315 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:20:38,315 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:20:38,315 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:20:38,315 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:20:38,315 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:20:38,316 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:20:38,316 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:20:38,379 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:20:38,395 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:20:38,400 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:20:38,402 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:20:38,403 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:20:38,404 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label42_true-unreach-call.c [2018-10-24 22:20:38,473 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/012507380/0a9d57a51efb49cf82e8189efc32df3c/FLAG8068add8b [2018-10-24 22:20:39,243 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:20:39,244 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label42_true-unreach-call.c [2018-10-24 22:20:39,274 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/012507380/0a9d57a51efb49cf82e8189efc32df3c/FLAG8068add8b [2018-10-24 22:20:39,293 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/012507380/0a9d57a51efb49cf82e8189efc32df3c [2018-10-24 22:20:39,306 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:20:39,308 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:20:39,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:20:39,310 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:20:39,315 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:20:39,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:20:39" (1/1) ... [2018-10-24 22:20:39,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63c61157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:39, skipping insertion in model container [2018-10-24 22:20:39,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:20:39" (1/1) ... [2018-10-24 22:20:39,332 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:20:39,451 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:20:40,519 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:20:40,524 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:20:40,977 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:20:41,008 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:20:41,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:41 WrapperNode [2018-10-24 22:20:41,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:20:41,010 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:20:41,010 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:20:41,011 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:20:41,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:41" (1/1) ... [2018-10-24 22:20:41,080 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:41" (1/1) ... [2018-10-24 22:20:41,390 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:20:41,391 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:20:41,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:20:41,391 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:20:41,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:41" (1/1) ... [2018-10-24 22:20:41,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:41" (1/1) ... [2018-10-24 22:20:41,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:41" (1/1) ... [2018-10-24 22:20:41,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:41" (1/1) ... [2018-10-24 22:20:41,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:41" (1/1) ... [2018-10-24 22:20:41,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:41" (1/1) ... [2018-10-24 22:20:41,608 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:41" (1/1) ... [2018-10-24 22:20:41,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:20:41,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:20:41,650 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:20:41,650 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:20:41,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:41" (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 22:20:41,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:20:41,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:20:41,725 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 22:20:41,725 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 22:20:41,725 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 22:20:41,725 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 22:20:41,726 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:20:41,727 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:20:41,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:20:41,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:20:41,727 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:20:41,727 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:20:50,680 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:20:50,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:20:50 BoogieIcfgContainer [2018-10-24 22:20:50,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:20:50,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:20:50,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:20:50,688 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:20:50,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:20:39" (1/3) ... [2018-10-24 22:20:50,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3746376e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:20:50, skipping insertion in model container [2018-10-24 22:20:50,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:20:41" (2/3) ... [2018-10-24 22:20:50,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3746376e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:20:50, skipping insertion in model container [2018-10-24 22:20:50,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:20:50" (3/3) ... [2018-10-24 22:20:50,693 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label42_true-unreach-call.c [2018-10-24 22:20:50,704 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:20:50,718 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:20:50,738 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:20:50,795 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:20:50,796 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:20:50,796 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:20:50,796 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:20:50,796 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:20:50,796 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:20:50,796 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:20:50,797 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:20:50,835 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-24 22:20:50,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-24 22:20:50,845 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:20:50,850 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] [2018-10-24 22:20:50,853 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:20:50,864 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:20:50,864 INFO L82 PathProgramCache]: Analyzing trace with hash -385321844, now seen corresponding path program 1 times [2018-10-24 22:20:50,867 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:20:50,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:20:50,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:20:50,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:20:50,923 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:20:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:20:51,354 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:20:51,540 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 22:20:51,543 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:20:51,543 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 22:20:51,543 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:20:51,552 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:20:51,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:20:51,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:20:51,594 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-24 22:20:58,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:20:58,264 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-24 22:20:58,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:20:58,267 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2018-10-24 22:20:58,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:20:58,300 INFO L225 Difference]: With dead ends: 2251 [2018-10-24 22:20:58,300 INFO L226 Difference]: Without dead ends: 1474 [2018-10-24 22:20:58,313 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:20:58,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-24 22:20:58,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-24 22:20:58,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-24 22:20:58,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-10-24 22:20:58,457 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 56 [2018-10-24 22:20:58,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:20:58,458 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-10-24 22:20:58,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:20:58,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-10-24 22:20:58,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-24 22:20:58,474 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:20:58,475 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:20:58,475 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:20:58,475 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:20:58,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1814229039, now seen corresponding path program 1 times [2018-10-24 22:20:58,476 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:20:58,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:20:58,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:20:58,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:20:58,478 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:20:58,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:20:58,837 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:20:58,838 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:20:58,838 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:20:58,838 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:20:58,840 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:20:58,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:20:58,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:20:58,841 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-10-24 22:21:08,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:21:08,620 INFO L93 Difference]: Finished difference Result 4422 states and 8490 transitions. [2018-10-24 22:21:08,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:21:08,623 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-10-24 22:21:08,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:21:08,646 INFO L225 Difference]: With dead ends: 4422 [2018-10-24 22:21:08,646 INFO L226 Difference]: Without dead ends: 2954 [2018-10-24 22:21:08,653 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 22:21:08,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2018-10-24 22:21:08,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2928. [2018-10-24 22:21:08,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-10-24 22:21:08,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5043 transitions. [2018-10-24 22:21:08,760 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5043 transitions. Word has length 131 [2018-10-24 22:21:08,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:21:08,761 INFO L481 AbstractCegarLoop]: Abstraction has 2928 states and 5043 transitions. [2018-10-24 22:21:08,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:21:08,761 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5043 transitions. [2018-10-24 22:21:08,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-24 22:21:08,765 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:21:08,766 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:08,766 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:21:08,766 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:21:08,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1830585943, now seen corresponding path program 1 times [2018-10-24 22:21:08,767 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:21:08,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:21:08,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:21:08,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:21:08,768 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:21:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:21:09,028 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:21:09,029 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:21:09,029 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:21:09,029 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:21:09,030 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:21:09,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:21:09,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:21:09,031 INFO L87 Difference]: Start difference. First operand 2928 states and 5043 transitions. Second operand 6 states. [2018-10-24 22:21:14,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:21:14,831 INFO L93 Difference]: Finished difference Result 7337 states and 12456 transitions. [2018-10-24 22:21:14,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:21:14,831 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-10-24 22:21:14,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:21:14,857 INFO L225 Difference]: With dead ends: 7337 [2018-10-24 22:21:14,857 INFO L226 Difference]: Without dead ends: 4415 [2018-10-24 22:21:14,867 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 22:21:14,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4415 states. [2018-10-24 22:21:14,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4415 to 4397. [2018-10-24 22:21:14,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4397 states. [2018-10-24 22:21:14,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4397 states to 4397 states and 6494 transitions. [2018-10-24 22:21:14,982 INFO L78 Accepts]: Start accepts. Automaton has 4397 states and 6494 transitions. Word has length 143 [2018-10-24 22:21:14,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:21:14,983 INFO L481 AbstractCegarLoop]: Abstraction has 4397 states and 6494 transitions. [2018-10-24 22:21:14,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:21:14,983 INFO L276 IsEmpty]: Start isEmpty. Operand 4397 states and 6494 transitions. [2018-10-24 22:21:14,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-24 22:21:14,986 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:21:14,987 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:14,987 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:21:14,987 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:21:14,988 INFO L82 PathProgramCache]: Analyzing trace with hash 215050342, now seen corresponding path program 1 times [2018-10-24 22:21:14,988 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:21:14,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:21:14,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:21:14,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:21:14,989 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:21:15,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:21:15,279 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:21:15,525 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:21:15,525 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:21:15,526 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:21:15,527 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 169 with the following transitions: [2018-10-24 22:21:15,529 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1971], [1973], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2284], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 22:21:15,600 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:21:15,601 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:21:18,447 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:21:18,553 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:21:18,554 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 22:21:18,564 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:21:18,564 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:21:20,000 INFO L232 lantSequenceWeakener]: Weakened 163 states. On average, predicates are now at 78.42% of their original sizes. [2018-10-24 22:21:20,000 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:21:20,423 INFO L413 sIntCurrentIteration]: We have 167 unified AI predicates [2018-10-24 22:21:20,423 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:21:20,424 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:21:20,425 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-10-24 22:21:20,425 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:21:20,426 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 22:21:20,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 22:21:20,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 22:21:20,426 INFO L87 Difference]: Start difference. First operand 4397 states and 6494 transitions. Second operand 7 states. [2018-10-24 22:23:04,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:23:04,539 INFO L93 Difference]: Finished difference Result 9493 states and 13867 transitions. [2018-10-24 22:23:04,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:23:04,540 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 168 [2018-10-24 22:23:04,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:23:04,562 INFO L225 Difference]: With dead ends: 9493 [2018-10-24 22:23:04,562 INFO L226 Difference]: Without dead ends: 5102 [2018-10-24 22:23:04,574 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 168 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:23:04,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5102 states. [2018-10-24 22:23:04,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5102 to 5100. [2018-10-24 22:23:04,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5100 states. [2018-10-24 22:23:04,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5100 states to 5100 states and 7209 transitions. [2018-10-24 22:23:04,694 INFO L78 Accepts]: Start accepts. Automaton has 5100 states and 7209 transitions. Word has length 168 [2018-10-24 22:23:04,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:23:04,695 INFO L481 AbstractCegarLoop]: Abstraction has 5100 states and 7209 transitions. [2018-10-24 22:23:04,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 22:23:04,695 INFO L276 IsEmpty]: Start isEmpty. Operand 5100 states and 7209 transitions. [2018-10-24 22:23:04,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2018-10-24 22:23:04,702 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:23:04,703 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:23:04,703 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:23:04,704 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:23:04,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1101070807, now seen corresponding path program 1 times [2018-10-24 22:23:04,704 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:23:04,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:23:04,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:23:04,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:23:04,705 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:23:04,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:23:05,546 WARN L179 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-10-24 22:23:05,916 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 152 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:23:05,917 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:23:05,917 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:23:05,917 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 356 with the following transitions: [2018-10-24 22:23:05,918 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1971], [1973], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2284], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 22:23:05,927 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:23:05,927 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:23:07,626 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:23:18,711 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:23:18,712 INFO L272 AbstractInterpreter]: Visited 195 different actions 383 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 22:23:18,739 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:23:18,739 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:23:22,590 INFO L232 lantSequenceWeakener]: Weakened 69 states. On average, predicates are now at 78.39% of their original sizes. [2018-10-24 22:23:22,590 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:24:20,564 INFO L413 sIntCurrentIteration]: We have 354 unified AI predicates [2018-10-24 22:24:20,564 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:24:20,565 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:24:20,565 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [11] total 23 [2018-10-24 22:24:20,565 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:24:20,566 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-24 22:24:20,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-24 22:24:20,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2018-10-24 22:24:20,567 INFO L87 Difference]: Start difference. First operand 5100 states and 7209 transitions. Second operand 14 states. Received shutdown request... [2018-10-24 22:24:34,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 22:24:34,767 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:24:34,772 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:24:34,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:24:34 BoogieIcfgContainer [2018-10-24 22:24:34,772 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:24:34,773 INFO L168 Benchmark]: Toolchain (without parser) took 235466.27 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 71.6 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-10-24 22:24:34,774 INFO L168 Benchmark]: CDTParser took 0.22 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 22:24:34,775 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1700.49 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-24 22:24:34,775 INFO L168 Benchmark]: Boogie Procedure Inliner took 380.21 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 779.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -962.3 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2018-10-24 22:24:34,776 INFO L168 Benchmark]: Boogie Preprocessor took 259.06 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2018-10-24 22:24:34,777 INFO L168 Benchmark]: RCFGBuilder took 9031.69 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: 524.2 MB). Peak memory consumption was 524.2 MB. Max. memory is 7.1 GB. [2018-10-24 22:24:34,778 INFO L168 Benchmark]: TraceAbstraction took 224089.64 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 1.3 GB in the end (delta: 347.9 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-24 22:24:34,785 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 1700.49 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 380.21 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 779.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -962.3 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 259.06 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9031.69 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: 524.2 MB). Peak memory consumption was 524.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 224089.64 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 1.3 GB in the end (delta: 347.9 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 156]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 156). Cancelled while BasicCegarLoop was constructing difference of abstraction (5100states) and FLOYD_HOARE automaton (currently 9 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (59 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 223.9s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 140.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1125 SDtfs, 7478 SDslu, 644 SDs, 0 SdLazy, 12534 SolverSat, 3675 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 90.8s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 551 GetRequests, 419 SyntacticMatches, 95 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 58.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5100occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 15.8s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9961264569250885 AbsIntWeakeningRatio, 0.08829174664107485 AbsIntAvgWeakeningVarsNumRemoved, 342.6602687140115 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 46 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 853 NumberOfCodeBlocks, 853 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 848 ConstructedInterpolants, 0 QuantifiedInterpolants, 1535936 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 250/357 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown