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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label50_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 01:44:04,767 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 01:44:04,769 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 01:44:04,784 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 01:44:04,785 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 01:44:04,786 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 01:44:04,787 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 01:44:04,789 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 01:44:04,790 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 01:44:04,791 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 01:44:04,792 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 01:44:04,792 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 01:44:04,793 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 01:44:04,794 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 01:44:04,795 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 01:44:04,796 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 01:44:04,797 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 01:44:04,799 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 01:44:04,801 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 01:44:04,803 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 01:44:04,804 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 01:44:04,805 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 01:44:04,811 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-25 01:44:04,827 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 01:44:04,857 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 01:44:04,857 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 01:44:04,858 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 01:44:04,858 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 01:44:04,858 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 01:44:04,859 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 01:44:04,859 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 01:44:04,859 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 01:44:04,859 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 01:44:04,860 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 01:44:04,860 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 01:44:04,860 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 01:44:04,860 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 01:44:04,860 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 01:44:04,861 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 01:44:04,861 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 01:44:04,862 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 01:44:04,862 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 01:44:04,862 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 01:44:04,862 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 01:44:04,862 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 01:44:04,862 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 01:44:04,863 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 01:44:04,863 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 01:44:04,863 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 01:44:04,863 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 01:44:04,864 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 01:44:04,864 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 01:44:04,864 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 01:44:04,864 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 01:44:04,864 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 01:44:04,865 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 01:44:04,865 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 01:44:04,865 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 01:44:04,865 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 01:44:04,865 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 01:44:04,908 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 01:44:04,922 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 01:44:04,925 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 01:44:04,927 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 01:44:04,927 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 01:44:04,928 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label50_true-unreach-call.c [2018-10-25 01:44:04,999 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/57e787347/9aa4908c754d4972adf908dbbf8f1f95/FLAGad8f1fc2a [2018-10-25 01:44:05,831 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 01:44:05,832 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label50_true-unreach-call.c [2018-10-25 01:44:05,886 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/57e787347/9aa4908c754d4972adf908dbbf8f1f95/FLAGad8f1fc2a [2018-10-25 01:44:05,909 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/57e787347/9aa4908c754d4972adf908dbbf8f1f95 [2018-10-25 01:44:05,923 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 01:44:05,924 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 01:44:05,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 01:44:05,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 01:44:05,931 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 01:44:05,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:44:05" (1/1) ... [2018-10-25 01:44:05,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b704e09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:44:05, skipping insertion in model container [2018-10-25 01:44:05,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:44:05" (1/1) ... [2018-10-25 01:44:05,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 01:44:06,133 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 01:44:07,623 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:44:07,628 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 01:44:08,532 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:44:08,573 INFO L193 MainTranslator]: Completed translation [2018-10-25 01:44:08,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:44:08 WrapperNode [2018-10-25 01:44:08,574 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 01:44:08,575 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 01:44:08,575 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 01:44:08,575 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 01:44:08,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:44:08" (1/1) ... [2018-10-25 01:44:08,675 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:44:08" (1/1) ... [2018-10-25 01:44:09,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 01:44:09,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 01:44:09,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 01:44:09,196 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 01:44:09,211 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:44:08" (1/1) ... [2018-10-25 01:44:09,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:44:08" (1/1) ... [2018-10-25 01:44:09,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:44:08" (1/1) ... [2018-10-25 01:44:09,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:44:08" (1/1) ... [2018-10-25 01:44:09,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:44:08" (1/1) ... [2018-10-25 01:44:09,470 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:44:08" (1/1) ... [2018-10-25 01:44:09,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:44:08" (1/1) ... [2018-10-25 01:44:09,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 01:44:09,625 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 01:44:09,625 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 01:44:09,625 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 01:44:09,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:44:08" (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 [2018-10-25 01:44:09,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 01:44:09,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 01:44:09,700 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-25 01:44:09,700 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-25 01:44:09,700 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-25 01:44:09,700 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-25 01:44:09,701 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-25 01:44:09,701 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-25 01:44:09,701 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 01:44:09,701 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 01:44:09,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 01:44:09,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 01:44:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 01:44:09,703 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 01:44:22,196 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 01:44:22,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:44:22 BoogieIcfgContainer [2018-10-25 01:44:22,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 01:44:22,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 01:44:22,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 01:44:22,202 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 01:44:22,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 01:44:05" (1/3) ... [2018-10-25 01:44:22,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30093d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:44:22, skipping insertion in model container [2018-10-25 01:44:22,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:44:08" (2/3) ... [2018-10-25 01:44:22,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30093d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:44:22, skipping insertion in model container [2018-10-25 01:44:22,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:44:22" (3/3) ... [2018-10-25 01:44:22,206 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label50_true-unreach-call.c [2018-10-25 01:44:22,215 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 01:44:22,226 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 01:44:22,241 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 01:44:22,287 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 01:44:22,288 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 01:44:22,288 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 01:44:22,288 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 01:44:22,288 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 01:44:22,288 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 01:44:22,288 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 01:44:22,289 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 01:44:22,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-25 01:44:22,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-25 01:44:22,349 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:44:22,350 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:44:22,353 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:44:22,358 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:44:22,359 INFO L82 PathProgramCache]: Analyzing trace with hash -166168757, now seen corresponding path program 1 times [2018-10-25 01:44:22,361 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:44:22,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:44:22,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:44:22,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:44:22,415 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:44:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:44:22,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:44:22,966 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:44:22,966 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 01:44:22,967 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:44:22,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 01:44:22,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 01:44:22,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 01:44:22,991 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-10-25 01:44:34,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:44:34,965 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-10-25 01:44:34,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 01:44:34,967 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2018-10-25 01:44:34,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:44:35,003 INFO L225 Difference]: With dead ends: 3097 [2018-10-25 01:44:35,003 INFO L226 Difference]: Without dead ends: 1975 [2018-10-25 01:44:35,015 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 [2018-10-25 01:44:35,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-10-25 01:44:35,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-10-25 01:44:35,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-10-25 01:44:35,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-10-25 01:44:35,214 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 69 [2018-10-25 01:44:35,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:44:35,215 INFO L481 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-10-25 01:44:35,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 01:44:35,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-10-25 01:44:35,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-25 01:44:35,223 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:44:35,223 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:44:35,224 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:44:35,224 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:44:35,224 INFO L82 PathProgramCache]: Analyzing trace with hash -840650406, now seen corresponding path program 1 times [2018-10-25 01:44:35,224 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:44:35,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:44:35,226 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:44:35,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:44:35,226 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:44:35,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:44:35,605 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:44:35,606 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:44:35,606 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-25 01:44:35,606 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:44:35,608 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-25 01:44:35,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-25 01:44:35,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-25 01:44:35,609 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-10-25 01:44:54,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:44:54,785 INFO L93 Difference]: Finished difference Result 5737 states and 9691 transitions. [2018-10-25 01:44:54,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-25 01:44:54,788 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2018-10-25 01:44:54,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:44:54,822 INFO L225 Difference]: With dead ends: 5737 [2018-10-25 01:44:54,822 INFO L226 Difference]: Without dead ends: 3769 [2018-10-25 01:44:54,829 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-25 01:44:54,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3769 states. [2018-10-25 01:44:54,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3769 to 3685. [2018-10-25 01:44:54,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3685 states. [2018-10-25 01:44:54,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3685 states to 3685 states and 5659 transitions. [2018-10-25 01:44:54,966 INFO L78 Accepts]: Start accepts. Automaton has 3685 states and 5659 transitions. Word has length 145 [2018-10-25 01:44:54,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:44:54,967 INFO L481 AbstractCegarLoop]: Abstraction has 3685 states and 5659 transitions. [2018-10-25 01:44:54,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-25 01:44:54,967 INFO L276 IsEmpty]: Start isEmpty. Operand 3685 states and 5659 transitions. [2018-10-25 01:44:54,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-10-25 01:44:54,980 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:44:54,980 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:44:54,981 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:44:54,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:44:54,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1657892938, now seen corresponding path program 1 times [2018-10-25 01:44:54,981 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:44:54,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:44:54,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:44:54,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:44:54,984 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:44:55,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:44:55,195 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:44:55,196 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:44:55,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-25 01:44:55,196 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:44:55,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-25 01:44:55,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-25 01:44:55,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-25 01:44:55,197 INFO L87 Difference]: Start difference. First operand 3685 states and 5659 transitions. Second operand 5 states. [2018-10-25 01:45:21,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:45:21,482 INFO L93 Difference]: Finished difference Result 13664 states and 21759 transitions. [2018-10-25 01:45:21,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-25 01:45:21,483 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2018-10-25 01:45:21,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:45:21,538 INFO L225 Difference]: With dead ends: 13664 [2018-10-25 01:45:21,539 INFO L226 Difference]: Without dead ends: 9985 [2018-10-25 01:45:21,563 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-25 01:45:21,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9985 states. [2018-10-25 01:45:21,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9985 to 9795. [2018-10-25 01:45:21,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9795 states. [2018-10-25 01:45:21,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9795 states to 9795 states and 14500 transitions. [2018-10-25 01:45:21,841 INFO L78 Accepts]: Start accepts. Automaton has 9795 states and 14500 transitions. Word has length 159 [2018-10-25 01:45:21,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:45:21,841 INFO L481 AbstractCegarLoop]: Abstraction has 9795 states and 14500 transitions. [2018-10-25 01:45:21,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-25 01:45:21,842 INFO L276 IsEmpty]: Start isEmpty. Operand 9795 states and 14500 transitions. [2018-10-25 01:45:21,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-10-25 01:45:21,849 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:45:21,850 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:45:21,850 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:45:21,850 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:45:21,850 INFO L82 PathProgramCache]: Analyzing trace with hash -437242214, now seen corresponding path program 1 times [2018-10-25 01:45:21,851 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:45:21,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:45:21,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:45:21,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:45:21,856 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:45:21,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:45:22,197 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 01:45:22,288 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:45:22,289 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:45:22,289 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 01:45:22,289 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:45:22,290 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:45:22,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:45:22,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:45:22,291 INFO L87 Difference]: Start difference. First operand 9795 states and 14500 transitions. Second operand 6 states. [2018-10-25 01:45:36,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:45:36,597 INFO L93 Difference]: Finished difference Result 34191 states and 53788 transitions. [2018-10-25 01:45:36,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 01:45:36,597 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 177 [2018-10-25 01:45:36,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:45:36,728 INFO L225 Difference]: With dead ends: 34191 [2018-10-25 01:45:36,729 INFO L226 Difference]: Without dead ends: 24402 [2018-10-25 01:45:36,802 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 [2018-10-25 01:45:36,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24402 states. [2018-10-25 01:45:37,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24402 to 24169. [2018-10-25 01:45:37,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24169 states. [2018-10-25 01:45:37,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24169 states to 24169 states and 34065 transitions. [2018-10-25 01:45:37,402 INFO L78 Accepts]: Start accepts. Automaton has 24169 states and 34065 transitions. Word has length 177 [2018-10-25 01:45:37,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:45:37,403 INFO L481 AbstractCegarLoop]: Abstraction has 24169 states and 34065 transitions. [2018-10-25 01:45:37,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:45:37,403 INFO L276 IsEmpty]: Start isEmpty. Operand 24169 states and 34065 transitions. [2018-10-25 01:45:37,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-10-25 01:45:37,428 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:45:37,428 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-25 01:45:37,429 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:45:37,429 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:45:37,429 INFO L82 PathProgramCache]: Analyzing trace with hash -912341493, now seen corresponding path program 1 times [2018-10-25 01:45:37,429 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:45:37,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:45:37,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:45:37,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:45:37,431 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:45:37,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:45:37,722 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 01:45:37,965 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 124 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 01:45:37,966 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:45:37,966 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:45:37,967 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 284 with the following transitions: [2018-10-25 01:45:37,970 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3043], [3051], [3059], [3067], [3075], [3079], [3081], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3140], [3143], [3147], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3425], [3429], [3440], [3443], [3448], [3450], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-25 01:45:38,054 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:45:38,054 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:45:38,704 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 01:45:38,706 INFO L272 AbstractInterpreter]: Visited 140 different actions 140 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-25 01:45:38,743 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:45:38,744 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 01:45:39,473 INFO L232 lantSequenceWeakener]: Weakened 270 states. On average, predicates are now at 71.53% of their original sizes. [2018-10-25 01:45:39,473 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 01:45:39,741 INFO L413 sIntCurrentIteration]: We have 282 unified AI predicates [2018-10-25 01:45:39,741 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 01:45:39,742 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:45:39,742 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-25 01:45:39,742 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:45:39,743 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:45:39,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:45:39,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:45:39,744 INFO L87 Difference]: Start difference. First operand 24169 states and 34065 transitions. Second operand 6 states. [2018-10-25 01:45:45,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 01:45:45,474 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.ArithmeticException: BigInteger: modulus not positive at java.math.BigInteger.mod(BigInteger.java:2458) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.explicit.ExplicitValueValue.modulo(ExplicitValueValue.java:154) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.explicit.ExplicitValueValue.modulo(ExplicitValueValue.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:125) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:100) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:92) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:92) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:92) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.ConditionalEvaluator.evaluate(ConditionalEvaluator.java:78) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.ConditionalEvaluator.evaluate(ConditionalEvaluator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:92) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.handleAssumeStatement(NonrelationalStatementProcessor.java:363) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.processStatement(NonrelationalStatementProcessor.java:160) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:142) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:128) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:362) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:353) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:125) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.applyInternally(CompoundDomainPostOperator.java:306) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:131) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.applyPost(TermConjunctEvaluator.java:305) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.lambda$4(TermConjunctEvaluator.java:178) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.computeFixpoint(TermConjunctEvaluator.java:198) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.lambda$1(TermConjunctEvaluator.java:150) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.computePost(TermConjunctEvaluator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormanCachedPostOperation.applyPost(PoormanCachedPostOperation.java:308) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.applyPost(PoormansAbstractPostOperator.java:217) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:119) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.lambda$17(DisjunctiveAbstractState.java:369) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.mapCollection(DisjunctiveAbstractState.java:537) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:369) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.AbsIntHoareTripleChecker.checkInternalTransitionWithValidState(AbsIntHoareTripleChecker.java:352) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.AbsIntHoareTripleChecker.checkInternalAbsInt(AbsIntHoareTripleChecker.java:249) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.AbsIntHoareTripleChecker.checkInternal(AbsIntHoareTripleChecker.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:359) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.chooseFalseSuccessor2(BasicAbstractInterpolantAutomaton.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:72) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1066) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:968) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:188) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:673) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:602) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:473) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-10-25 01:45:45,479 INFO L168 Benchmark]: Toolchain (without parser) took 99555.96 ms. Allocated memory was 1.5 GB in the beginning and 3.0 GB in the end (delta: 1.5 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -356.7 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-25 01:45:45,480 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-25 01:45:45,481 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2648.15 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-25 01:45:45,482 INFO L168 Benchmark]: Boogie Procedure Inliner took 620.73 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 795.9 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. [2018-10-25 01:45:45,483 INFO L168 Benchmark]: Boogie Preprocessor took 429.16 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: 38.8 MB). Peak memory consumption was 38.8 MB. Max. memory is 7.1 GB. [2018-10-25 01:45:45,484 INFO L168 Benchmark]: RCFGBuilder took 12572.53 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 216.0 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -38.4 MB). Peak memory consumption was 688.0 MB. Max. memory is 7.1 GB. [2018-10-25 01:45:45,485 INFO L168 Benchmark]: TraceAbstraction took 83279.93 ms. Allocated memory was 2.5 GB in the beginning and 3.0 GB in the end (delta: 475.0 MB). Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 453.8 MB). Peak memory consumption was 928.8 MB. Max. memory is 7.1 GB. [2018-10-25 01:45:45,493 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2648.15 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 620.73 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 795.9 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 429.16 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: 38.8 MB). Peak memory consumption was 38.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12572.53 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 216.0 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -38.4 MB). Peak memory consumption was 688.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 83279.93 ms. Allocated memory was 2.5 GB in the beginning and 3.0 GB in the end (delta: 475.0 MB). Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 453.8 MB). Peak memory consumption was 928.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: ArithmeticException: BigInteger: modulus not positive de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: ArithmeticException: BigInteger: modulus not positive: java.math.BigInteger.mod(BigInteger.java:2458) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...