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/Problem16_label53_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 01:54:03,126 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 01:54:03,128 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 01:54:03,140 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 01:54:03,140 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 01:54:03,142 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 01:54:03,143 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 01:54:03,145 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 01:54:03,146 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 01:54:03,147 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 01:54:03,148 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 01:54:03,149 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 01:54:03,149 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 01:54:03,150 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 01:54:03,152 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 01:54:03,152 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 01:54:03,153 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 01:54:03,157 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 01:54:03,161 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 01:54:03,166 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 01:54:03,167 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 01:54:03,171 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 01:54:03,174 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-25 01:54:03,183 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 01:54:03,198 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 01:54:03,198 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 01:54:03,199 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 01:54:03,199 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 01:54:03,199 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 01:54:03,200 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 01:54:03,200 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 01:54:03,200 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 01:54:03,200 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 01:54:03,200 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 01:54:03,201 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 01:54:03,201 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 01:54:03,201 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 01:54:03,201 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 01:54:03,202 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 01:54:03,202 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 01:54:03,202 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 01:54:03,202 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 01:54:03,203 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 01:54:03,203 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 01:54:03,203 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 01:54:03,203 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 01:54:03,203 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 01:54:03,204 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 01:54:03,204 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 01:54:03,204 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 01:54:03,204 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 01:54:03,204 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 01:54:03,205 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 01:54:03,205 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 01:54:03,205 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 01:54:03,205 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 01:54:03,205 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 01:54:03,206 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 01:54:03,206 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 01:54:03,206 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 01:54:03,264 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 01:54:03,281 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 01:54:03,285 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 01:54:03,287 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 01:54:03,287 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 01:54:03,288 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label53_true-unreach-call.c [2018-10-25 01:54:03,348 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/650d61f0f/c34c8b784b0b4f48b4686b2c69109afe/FLAG4d0c7bd4d [2018-10-25 01:54:04,036 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 01:54:04,037 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label53_true-unreach-call.c [2018-10-25 01:54:04,057 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/650d61f0f/c34c8b784b0b4f48b4686b2c69109afe/FLAG4d0c7bd4d [2018-10-25 01:54:04,079 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/650d61f0f/c34c8b784b0b4f48b4686b2c69109afe [2018-10-25 01:54:04,091 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 01:54:04,092 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 01:54:04,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 01:54:04,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 01:54:04,099 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 01:54:04,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:54:04" (1/1) ... [2018-10-25 01:54:04,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@afec075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:04, skipping insertion in model container [2018-10-25 01:54:04,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:54:04" (1/1) ... [2018-10-25 01:54:04,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 01:54:04,206 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 01:54:04,996 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:54:05,001 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 01:54:05,248 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:54:05,270 INFO L193 MainTranslator]: Completed translation [2018-10-25 01:54:05,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:05 WrapperNode [2018-10-25 01:54:05,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 01:54:05,272 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 01:54:05,272 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 01:54:05,272 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 01:54:05,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:05" (1/1) ... [2018-10-25 01:54:05,326 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:05" (1/1) ... [2018-10-25 01:54:05,586 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 01:54:05,587 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 01:54:05,587 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 01:54:05,587 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 01:54:05,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:05" (1/1) ... [2018-10-25 01:54:05,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:05" (1/1) ... [2018-10-25 01:54:05,611 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:05" (1/1) ... [2018-10-25 01:54:05,612 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:05" (1/1) ... [2018-10-25 01:54:05,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:05" (1/1) ... [2018-10-25 01:54:05,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:05" (1/1) ... [2018-10-25 01:54:05,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:05" (1/1) ... [2018-10-25 01:54:05,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 01:54:05,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 01:54:05,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 01:54:05,733 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 01:54:05,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:05" (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 01:54:05,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 01:54:05,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 01:54:05,816 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-25 01:54:05,816 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-25 01:54:05,817 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 01:54:05,818 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 01:54:05,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 01:54:05,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 01:54:05,818 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 01:54:05,818 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 01:54:12,070 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 01:54:12,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:54:12 BoogieIcfgContainer [2018-10-25 01:54:12,071 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 01:54:12,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 01:54:12,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 01:54:12,076 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 01:54:12,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 01:54:04" (1/3) ... [2018-10-25 01:54:12,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c2eaa44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:54:12, skipping insertion in model container [2018-10-25 01:54:12,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:05" (2/3) ... [2018-10-25 01:54:12,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c2eaa44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:54:12, skipping insertion in model container [2018-10-25 01:54:12,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:54:12" (3/3) ... [2018-10-25 01:54:12,080 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label53_true-unreach-call.c [2018-10-25 01:54:12,091 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 01:54:12,101 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 01:54:12,119 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 01:54:12,161 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 01:54:12,161 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 01:54:12,162 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 01:54:12,162 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 01:54:12,162 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 01:54:12,162 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 01:54:12,162 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 01:54:12,163 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 01:54:12,196 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-25 01:54:12,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-25 01:54:12,205 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:54:12,206 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] [2018-10-25 01:54:12,208 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:54:12,214 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:54:12,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1710890852, now seen corresponding path program 1 times [2018-10-25 01:54:12,216 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:54:12,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:54:12,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:54:12,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:54:12,267 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:54:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:54:12,683 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 01:54:12,796 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 01:54:12,799 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:54:12,799 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 01:54:12,799 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:54:12,807 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 01:54:12,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 01:54:12,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 01:54:12,829 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-10-25 01:54:16,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:54:16,334 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-10-25 01:54:16,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 01:54:16,340 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2018-10-25 01:54:16,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:54:16,366 INFO L225 Difference]: With dead ends: 1156 [2018-10-25 01:54:16,366 INFO L226 Difference]: Without dead ends: 744 [2018-10-25 01:54:16,376 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 01:54:16,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-10-25 01:54:16,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-10-25 01:54:16,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-25 01:54:16,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1355 transitions. [2018-10-25 01:54:16,514 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1355 transitions. Word has length 44 [2018-10-25 01:54:16,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:54:16,515 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1355 transitions. [2018-10-25 01:54:16,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 01:54:16,515 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1355 transitions. [2018-10-25 01:54:16,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-25 01:54:16,524 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:54:16,525 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:16,525 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:54:16,526 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:54:16,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1470767914, now seen corresponding path program 1 times [2018-10-25 01:54:16,526 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:54:16,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:54:16,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:54:16,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:54:16,528 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:54:16,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:54:16,885 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 01:54:16,999 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:54:16,999 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:54:17,000 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-25 01:54:17,000 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:54:17,002 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-25 01:54:17,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-25 01:54:17,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-25 01:54:17,003 INFO L87 Difference]: Start difference. First operand 744 states and 1355 transitions. Second operand 5 states. [2018-10-25 01:54:23,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:54:23,824 INFO L93 Difference]: Finished difference Result 2194 states and 4083 transitions. [2018-10-25 01:54:23,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 01:54:23,826 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2018-10-25 01:54:23,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:54:23,845 INFO L225 Difference]: With dead ends: 2194 [2018-10-25 01:54:23,845 INFO L226 Difference]: Without dead ends: 1456 [2018-10-25 01:54:23,849 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-25 01:54:23,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2018-10-25 01:54:23,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1436. [2018-10-25 01:54:23,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2018-10-25 01:54:23,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2550 transitions. [2018-10-25 01:54:23,951 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2550 transitions. Word has length 114 [2018-10-25 01:54:23,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:54:23,952 INFO L481 AbstractCegarLoop]: Abstraction has 1436 states and 2550 transitions. [2018-10-25 01:54:23,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-25 01:54:23,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2550 transitions. [2018-10-25 01:54:23,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-25 01:54:23,964 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:54:23,964 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:23,965 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:54:23,965 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:54:23,965 INFO L82 PathProgramCache]: Analyzing trace with hash -183601941, now seen corresponding path program 1 times [2018-10-25 01:54:23,965 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:54:23,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:54:23,967 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:54:23,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:54:23,970 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:54:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:54:24,270 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:54:24,270 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:54:24,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 01:54:24,270 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:54:24,271 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:54:24,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:54:24,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:54:24,272 INFO L87 Difference]: Start difference. First operand 1436 states and 2550 transitions. Second operand 6 states. [2018-10-25 01:54:29,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:54:29,097 INFO L93 Difference]: Finished difference Result 3936 states and 7024 transitions. [2018-10-25 01:54:29,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 01:54:29,099 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-10-25 01:54:29,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:54:29,120 INFO L225 Difference]: With dead ends: 3936 [2018-10-25 01:54:29,121 INFO L226 Difference]: Without dead ends: 2506 [2018-10-25 01:54:29,131 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-25 01:54:29,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2018-10-25 01:54:29,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2479. [2018-10-25 01:54:29,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2479 states. [2018-10-25 01:54:29,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 3996 transitions. [2018-10-25 01:54:29,231 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 3996 transitions. Word has length 143 [2018-10-25 01:54:29,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:54:29,231 INFO L481 AbstractCegarLoop]: Abstraction has 2479 states and 3996 transitions. [2018-10-25 01:54:29,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:54:29,232 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 3996 transitions. [2018-10-25 01:54:29,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-10-25 01:54:29,237 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:54:29,238 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:29,238 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:54:29,238 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:54:29,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1245396135, now seen corresponding path program 1 times [2018-10-25 01:54:29,239 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:54:29,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:54:29,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:54:29,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:54:29,243 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:54:29,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:54:29,530 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 01:54:29,768 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:54:29,769 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:54:29,769 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 01:54:29,769 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:54:29,770 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:54:29,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:54:29,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:54:29,771 INFO L87 Difference]: Start difference. First operand 2479 states and 3996 transitions. Second operand 6 states. [2018-10-25 01:54:33,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:54:33,950 INFO L93 Difference]: Finished difference Result 6050 states and 9896 transitions. [2018-10-25 01:54:33,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 01:54:33,957 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2018-10-25 01:54:33,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:54:33,983 INFO L225 Difference]: With dead ends: 6050 [2018-10-25 01:54:33,983 INFO L226 Difference]: Without dead ends: 3577 [2018-10-25 01:54:33,997 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-25 01:54:34,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3577 states. [2018-10-25 01:54:34,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3577 to 3545. [2018-10-25 01:54:34,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3545 states. [2018-10-25 01:54:34,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 4965 transitions. [2018-10-25 01:54:34,109 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 4965 transitions. Word has length 161 [2018-10-25 01:54:34,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:54:34,110 INFO L481 AbstractCegarLoop]: Abstraction has 3545 states and 4965 transitions. [2018-10-25 01:54:34,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:54:34,110 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 4965 transitions. [2018-10-25 01:54:34,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-10-25 01:54:34,113 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:54:34,113 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:54:34,114 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:54:34,114 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:54:34,114 INFO L82 PathProgramCache]: Analyzing trace with hash -282881664, now seen corresponding path program 1 times [2018-10-25 01:54:34,114 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:54:34,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:54:34,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:54:34,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:54:34,116 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:54:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:54:34,524 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 104 proven. 35 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 01:54:34,525 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:54:34,525 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:54:34,526 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 245 with the following transitions: [2018-10-25 01:54:34,531 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [431], [433], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-25 01:54:34,600 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:54:34,600 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:54:35,224 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 01:54:35,226 INFO L272 AbstractInterpreter]: Visited 135 different actions 135 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-25 01:54:35,250 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:54:35,250 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 01:54:35,788 INFO L232 lantSequenceWeakener]: Weakened 235 states. On average, predicates are now at 77.81% of their original sizes. [2018-10-25 01:54:35,788 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 01:54:36,053 INFO L413 sIntCurrentIteration]: We have 243 unified AI predicates [2018-10-25 01:54:36,053 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 01:54:36,054 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:54:36,054 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2018-10-25 01:54:36,055 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:54:36,055 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:54:36,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:54:36,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:54:36,056 INFO L87 Difference]: Start difference. First operand 3545 states and 4965 transitions. Second operand 6 states. [2018-10-25 01:55:00,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 01:55:00,341 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: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.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: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: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.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:77) 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 01:55:00,346 INFO L168 Benchmark]: Toolchain (without parser) took 56254.77 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -826.1 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-25 01:55:00,348 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-25 01:55:00,348 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1177.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-25 01:55:00,349 INFO L168 Benchmark]: Boogie Procedure Inliner took 314.60 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 754.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -852.7 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2018-10-25 01:55:00,350 INFO L168 Benchmark]: Boogie Preprocessor took 144.97 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2018-10-25 01:55:00,351 INFO L168 Benchmark]: RCFGBuilder took 6338.95 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 244.4 MB). Peak memory consumption was 244.4 MB. Max. memory is 7.1 GB. [2018-10-25 01:55:00,352 INFO L168 Benchmark]: TraceAbstraction took 48273.08 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.3 GB in the end (delta: -316.2 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-25 01:55:00,357 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1177.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 314.60 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 754.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -852.7 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 144.97 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6338.95 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 244.4 MB). Peak memory consumption was 244.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 48273.08 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.3 GB in the end (delta: -316.2 MB). Peak memory consumption was 1.6 GB. 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...