java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label02_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 00:50:02,846 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 00:50:02,848 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 00:50:02,861 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 00:50:02,861 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 00:50:02,862 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 00:50:02,863 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 00:50:02,865 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 00:50:02,867 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 00:50:02,868 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 00:50:02,869 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 00:50:02,869 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 00:50:02,870 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 00:50:02,871 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 00:50:02,872 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 00:50:02,873 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 00:50:02,874 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 00:50:02,876 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 00:50:02,878 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 00:50:02,880 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 00:50:02,881 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 00:50:02,882 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 00:50:02,885 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 00:50:02,894 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 00:50:02,911 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 00:50:02,911 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 00:50:02,912 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 00:50:02,913 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 00:50:02,913 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 00:50:02,913 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 00:50:02,913 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 00:50:02,914 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 00:50:02,914 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 00:50:02,914 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 00:50:02,914 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 00:50:02,914 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 00:50:02,915 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 00:50:02,915 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 00:50:02,916 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 00:50:02,916 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 00:50:02,916 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 00:50:02,916 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 00:50:02,917 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 00:50:02,917 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 00:50:02,917 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 00:50:02,917 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 00:50:02,917 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 00:50:02,918 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 00:50:02,918 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 00:50:02,918 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 00:50:02,918 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 00:50:02,918 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 00:50:02,919 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 00:50:02,919 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 00:50:02,919 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 00:50:02,919 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 00:50:02,919 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 00:50:02,919 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 00:50:02,966 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 00:50:02,979 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 00:50:02,983 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 00:50:02,984 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 00:50:02,985 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 00:50:02,986 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label02_true-unreach-call.c [2018-10-24 00:50:03,047 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c240bea03/64a89d14ac4543f7b7b366ddaafc38e9/FLAGe3151cc5b [2018-10-24 00:50:03,690 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 00:50:03,691 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label02_true-unreach-call.c [2018-10-24 00:50:03,707 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c240bea03/64a89d14ac4543f7b7b366ddaafc38e9/FLAGe3151cc5b [2018-10-24 00:50:03,725 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c240bea03/64a89d14ac4543f7b7b366ddaafc38e9 [2018-10-24 00:50:03,738 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 00:50:03,741 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 00:50:03,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 00:50:03,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 00:50:03,750 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 00:50:03,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:50:03" (1/1) ... [2018-10-24 00:50:03,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54cb912f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:50:03, skipping insertion in model container [2018-10-24 00:50:03,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:50:03" (1/1) ... [2018-10-24 00:50:03,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 00:50:03,837 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 00:50:04,275 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 00:50:04,280 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 00:50:04,410 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 00:50:04,427 INFO L193 MainTranslator]: Completed translation [2018-10-24 00:50:04,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:50:04 WrapperNode [2018-10-24 00:50:04,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 00:50:04,429 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 00:50:04,430 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 00:50:04,430 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 00:50:04,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:50:04" (1/1) ... [2018-10-24 00:50:04,466 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:50:04" (1/1) ... [2018-10-24 00:50:04,548 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 00:50:04,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 00:50:04,549 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 00:50:04,549 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 00:50:04,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:50:04" (1/1) ... [2018-10-24 00:50:04,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:50:04" (1/1) ... [2018-10-24 00:50:04,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:50:04" (1/1) ... [2018-10-24 00:50:04,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:50:04" (1/1) ... [2018-10-24 00:50:04,740 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:50:04" (1/1) ... [2018-10-24 00:50:04,766 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:50:04" (1/1) ... [2018-10-24 00:50:04,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:50:04" (1/1) ... [2018-10-24 00:50:04,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 00:50:04,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 00:50:04,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 00:50:04,798 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 00:50:04,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:50:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 00:50:04,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 00:50:04,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 00:50:04,885 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 00:50:04,885 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 00:50:04,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 00:50:04,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 00:50:04,886 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 00:50:04,886 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 00:50:08,248 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 00:50:08,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:50:08 BoogieIcfgContainer [2018-10-24 00:50:08,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 00:50:08,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 00:50:08,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 00:50:08,260 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 00:50:08,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:50:03" (1/3) ... [2018-10-24 00:50:08,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed9785d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:50:08, skipping insertion in model container [2018-10-24 00:50:08,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:50:04" (2/3) ... [2018-10-24 00:50:08,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed9785d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:50:08, skipping insertion in model container [2018-10-24 00:50:08,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:50:08" (3/3) ... [2018-10-24 00:50:08,265 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label02_true-unreach-call.c [2018-10-24 00:50:08,278 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 00:50:08,293 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 00:50:08,315 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 00:50:08,368 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 00:50:08,368 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 00:50:08,369 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 00:50:08,369 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 00:50:08,369 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 00:50:08,369 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 00:50:08,369 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 00:50:08,370 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 00:50:08,408 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-24 00:50:08,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-24 00:50:08,419 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:50:08,420 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] [2018-10-24 00:50:08,423 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:50:08,429 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:50:08,430 INFO L82 PathProgramCache]: Analyzing trace with hash 417311892, now seen corresponding path program 1 times [2018-10-24 00:50:08,432 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:50:08,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:50:08,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:50:08,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:50:08,479 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:50:08,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:50:08,950 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 00:50:08,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 00:50:08,993 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 00:50:08,993 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 00:50:08,993 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:50:09,000 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 00:50:09,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 00:50:09,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 00:50:09,019 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-10-24 00:50:10,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 00:50:10,828 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-10-24 00:50:10,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 00:50:10,832 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2018-10-24 00:50:10,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 00:50:10,851 INFO L225 Difference]: With dead ends: 574 [2018-10-24 00:50:10,852 INFO L226 Difference]: Without dead ends: 356 [2018-10-24 00:50:10,859 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 00:50:10,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-10-24 00:50:10,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-10-24 00:50:10,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-24 00:50:10,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-10-24 00:50:10,965 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 66 [2018-10-24 00:50:10,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 00:50:10,966 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-10-24 00:50:10,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 00:50:10,967 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-10-24 00:50:10,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-24 00:50:10,979 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:50:10,980 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 00:50:10,980 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:50:10,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:50:10,981 INFO L82 PathProgramCache]: Analyzing trace with hash 318918200, now seen corresponding path program 1 times [2018-10-24 00:50:10,982 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:50:10,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:50:10,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:50:10,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:50:10,984 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:50:11,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:50:11,414 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 00:50:11,414 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 00:50:11,415 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 00:50:11,415 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:50:11,417 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 00:50:11,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 00:50:11,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 00:50:11,419 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 4 states. [2018-10-24 00:50:13,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 00:50:13,617 INFO L93 Difference]: Finished difference Result 1282 states and 2328 transitions. [2018-10-24 00:50:13,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 00:50:13,618 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 186 [2018-10-24 00:50:13,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 00:50:13,631 INFO L225 Difference]: With dead ends: 1282 [2018-10-24 00:50:13,632 INFO L226 Difference]: Without dead ends: 932 [2018-10-24 00:50:13,640 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 00:50:13,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2018-10-24 00:50:13,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 932. [2018-10-24 00:50:13,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 932 states. [2018-10-24 00:50:13,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1469 transitions. [2018-10-24 00:50:13,714 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1469 transitions. Word has length 186 [2018-10-24 00:50:13,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 00:50:13,716 INFO L481 AbstractCegarLoop]: Abstraction has 932 states and 1469 transitions. [2018-10-24 00:50:13,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 00:50:13,716 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1469 transitions. [2018-10-24 00:50:13,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-10-24 00:50:13,729 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:50:13,729 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 00:50:13,729 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:50:13,731 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:50:13,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1715361491, now seen corresponding path program 1 times [2018-10-24 00:50:13,731 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:50:13,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:50:13,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:50:13,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:50:13,734 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:50:13,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:50:14,100 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 00:50:14,220 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 00:50:14,221 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 00:50:14,221 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 00:50:14,221 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:50:14,223 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 00:50:14,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 00:50:14,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 00:50:14,224 INFO L87 Difference]: Start difference. First operand 932 states and 1469 transitions. Second operand 6 states. [2018-10-24 00:50:19,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 00:50:19,059 INFO L93 Difference]: Finished difference Result 2162 states and 3509 transitions. [2018-10-24 00:50:19,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 00:50:19,060 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 193 [2018-10-24 00:50:19,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 00:50:19,072 INFO L225 Difference]: With dead ends: 2162 [2018-10-24 00:50:19,072 INFO L226 Difference]: Without dead ends: 1236 [2018-10-24 00:50:19,083 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 00:50:19,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2018-10-24 00:50:19,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 1216. [2018-10-24 00:50:19,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1216 states. [2018-10-24 00:50:19,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1766 transitions. [2018-10-24 00:50:19,154 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1766 transitions. Word has length 193 [2018-10-24 00:50:19,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 00:50:19,155 INFO L481 AbstractCegarLoop]: Abstraction has 1216 states and 1766 transitions. [2018-10-24 00:50:19,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 00:50:19,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1766 transitions. [2018-10-24 00:50:19,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-10-24 00:50:19,163 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:50:19,164 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, 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] [2018-10-24 00:50:19,164 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:50:19,164 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:50:19,164 INFO L82 PathProgramCache]: Analyzing trace with hash 475531563, now seen corresponding path program 1 times [2018-10-24 00:50:19,165 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:50:19,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:50:19,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:50:19,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:50:19,167 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:50:19,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:50:19,460 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 00:50:19,791 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 118 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 00:50:19,791 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 00:50:19,791 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 00:50:19,792 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 264 with the following transitions: [2018-10-24 00:50:19,794 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [429], [431], [434], [442], [450], [458], [466], [474], [482], [490], [494], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [722], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 00:50:19,878 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 00:50:19,878 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 00:50:24,258 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 00:50:24,260 INFO L272 AbstractInterpreter]: Visited 132 different actions 132 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 00:50:24,296 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:50:24,296 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 00:50:29,287 INFO L232 lantSequenceWeakener]: Weakened 242 states. On average, predicates are now at 73.84% of their original sizes. [2018-10-24 00:50:29,288 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 00:50:36,248 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 00:50:36,249 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 00:50:36,249 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-10-24 00:50:36,249 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:50:36,250 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 00:50:36,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 00:50:36,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-24 00:50:36,250 INFO L87 Difference]: Start difference. First operand 1216 states and 1766 transitions. Second operand 11 states. [2018-10-24 00:50:56,236 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 00:51:52,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 00:51:52,558 INFO L93 Difference]: Finished difference Result 2575 states and 3779 transitions. [2018-10-24 00:51:52,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 00:51:52,559 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 263 [2018-10-24 00:51:52,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 00:51:52,566 INFO L225 Difference]: With dead ends: 2575 [2018-10-24 00:51:52,566 INFO L226 Difference]: Without dead ends: 1365 [2018-10-24 00:51:52,572 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 267 GetRequests, 208 SyntacticMatches, 45 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2018-10-24 00:51:52,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2018-10-24 00:51:52,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1360. [2018-10-24 00:51:52,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1360 states. [2018-10-24 00:51:52,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 1918 transitions. [2018-10-24 00:51:52,642 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 1918 transitions. Word has length 263 [2018-10-24 00:51:52,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 00:51:52,642 INFO L481 AbstractCegarLoop]: Abstraction has 1360 states and 1918 transitions. [2018-10-24 00:51:52,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-24 00:51:52,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 1918 transitions. [2018-10-24 00:51:52,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-10-24 00:51:52,650 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:51:52,650 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, 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] [2018-10-24 00:51:52,651 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:51:52,651 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:51:52,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1437912543, now seen corresponding path program 1 times [2018-10-24 00:51:52,651 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:51:52,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:51:52,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:51:52,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:51:52,653 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:51:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:51:53,238 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 00:51:53,239 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 00:51:53,239 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 00:51:53,239 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 274 with the following transitions: [2018-10-24 00:51:53,240 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [429], [431], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [722], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 00:51:53,253 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 00:51:53,253 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 00:51:54,832 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 00:52:17,484 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 00:52:17,485 INFO L272 AbstractInterpreter]: Visited 135 different actions 780 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 00:52:17,490 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:52:17,491 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 00:52:20,788 INFO L232 lantSequenceWeakener]: Weakened 86 states. On average, predicates are now at 75.05% of their original sizes. [2018-10-24 00:52:20,789 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 00:52:53,320 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 00:52:53,321 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 00:52:53,321 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-10-24 00:52:53,321 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:52:53,322 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-24 00:52:53,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-24 00:52:53,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2018-10-24 00:52:53,323 INFO L87 Difference]: Start difference. First operand 1360 states and 1918 transitions. Second operand 23 states. Received shutdown request... [2018-10-24 00:53:51,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-24 00:53:51,752 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 00:53:51,757 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 00:53:51,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:53:51 BoogieIcfgContainer [2018-10-24 00:53:51,757 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 00:53:51,758 INFO L168 Benchmark]: Toolchain (without parser) took 228019.46 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.9 GB in the end (delta: -2.5 GB). Peak memory consumption was 139.7 MB. Max. memory is 7.1 GB. [2018-10-24 00:53:51,759 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 00:53:51,760 INFO L168 Benchmark]: CACSL2BoogieTranslator took 686.75 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-24 00:53:51,761 INFO L168 Benchmark]: Boogie Procedure Inliner took 118.74 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-10-24 00:53:51,761 INFO L168 Benchmark]: Boogie Preprocessor took 248.84 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -823.2 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2018-10-24 00:53:51,762 INFO L168 Benchmark]: RCFGBuilder took 3454.73 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 119.8 MB). Peak memory consumption was 119.8 MB. Max. memory is 7.1 GB. [2018-10-24 00:53:51,764 INFO L168 Benchmark]: TraceAbstraction took 223503.93 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.9 GB in the end (delta: -1.9 GB). Peak memory consumption was 63.1 MB. Max. memory is 7.1 GB. [2018-10-24 00:53:51,770 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 686.75 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 118.74 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 248.84 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -823.2 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3454.73 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 119.8 MB). Peak memory consumption was 119.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 223503.93 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.9 GB in the end (delta: -1.9 GB). Peak memory consumption was 63.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 181]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 181). Cancelled while BasicCegarLoop was constructing difference of abstraction (1360states) and FLOYD_HOARE automaton (currently 20 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (876 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 223.4s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 143.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 821 SDtfs, 3723 SDslu, 634 SDs, 0 SdLazy, 4195 SolverSat, 795 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 70.5s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 564 GetRequests, 430 SyntacticMatches, 84 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 40.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1360occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 28.7s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9959018618031807 AbsIntWeakeningRatio, 0.09737827715355805 AbsIntAvgWeakeningVarsNumRemoved, 111.83333333333333 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 25 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 981 NumberOfCodeBlocks, 981 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 976 ConstructedInterpolants, 0 QuantifiedInterpolants, 684892 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 437/504 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown