java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label06_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:37:10,038 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:37:10,040 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:37:10,052 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:37:10,053 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:37:10,054 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:37:10,055 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:37:10,057 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:37:10,058 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:37:10,059 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:37:10,060 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:37:10,060 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:37:10,061 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:37:10,062 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:37:10,064 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:37:10,064 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:37:10,067 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:37:10,069 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:37:10,072 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:37:10,073 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:37:10,074 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:37:10,076 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:37:10,078 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:37:10,087 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 21:37:10,102 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:37:10,102 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:37:10,103 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:37:10,103 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:37:10,103 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:37:10,104 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:37:10,104 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:37:10,104 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:37:10,104 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:37:10,105 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:37:10,105 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:37:10,105 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:37:10,106 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:37:10,106 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:37:10,106 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:37:10,106 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:37:10,107 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:37:10,107 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:37:10,107 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:37:10,107 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:37:10,107 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:37:10,108 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:37:10,108 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:37:10,108 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:37:10,108 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:37:10,109 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:37:10,109 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:37:10,109 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:37:10,109 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:37:10,109 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:37:10,109 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:37:10,110 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:37:10,110 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:37:10,110 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:37:10,153 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:37:10,166 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:37:10,170 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:37:10,171 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:37:10,172 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:37:10,172 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label06_true-unreach-call_false-termination.c [2018-10-24 21:37:10,232 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a245a4ae4/5d99c62b3a2a4a8ab705dff05f33dba2/FLAG92db780d7 [2018-10-24 21:37:10,855 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:37:10,856 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label06_true-unreach-call_false-termination.c [2018-10-24 21:37:10,870 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a245a4ae4/5d99c62b3a2a4a8ab705dff05f33dba2/FLAG92db780d7 [2018-10-24 21:37:10,893 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a245a4ae4/5d99c62b3a2a4a8ab705dff05f33dba2 [2018-10-24 21:37:10,906 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:37:10,909 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:37:10,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:37:10,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:37:10,917 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:37:10,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:37:10" (1/1) ... [2018-10-24 21:37:10,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6351e815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:10, skipping insertion in model container [2018-10-24 21:37:10,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:37:10" (1/1) ... [2018-10-24 21:37:10,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:37:11,019 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:37:11,559 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:37:11,565 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:37:11,723 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:37:11,744 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:37:11,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:11 WrapperNode [2018-10-24 21:37:11,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:37:11,746 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:37:11,746 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:37:11,746 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:37:11,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:11" (1/1) ... [2018-10-24 21:37:11,801 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:11" (1/1) ... [2018-10-24 21:37:11,998 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:37:11,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:37:11,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:37:11,998 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:37:12,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:11" (1/1) ... [2018-10-24 21:37:12,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:11" (1/1) ... [2018-10-24 21:37:12,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:11" (1/1) ... [2018-10-24 21:37:12,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:11" (1/1) ... [2018-10-24 21:37:12,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:11" (1/1) ... [2018-10-24 21:37:12,088 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:11" (1/1) ... [2018-10-24 21:37:12,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:11" (1/1) ... [2018-10-24 21:37:12,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:37:12,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:37:12,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:37:12,108 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:37:12,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:37:12,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:37:12,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:37:12,192 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:37:12,193 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:37:12,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:37:12,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:37:12,193 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:37:12,194 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:37:15,918 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:37:15,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:37:15 BoogieIcfgContainer [2018-10-24 21:37:15,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:37:15,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:37:15,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:37:15,926 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:37:15,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:37:10" (1/3) ... [2018-10-24 21:37:15,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3133d260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:37:15, skipping insertion in model container [2018-10-24 21:37:15,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:11" (2/3) ... [2018-10-24 21:37:15,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3133d260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:37:15, skipping insertion in model container [2018-10-24 21:37:15,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:37:15" (3/3) ... [2018-10-24 21:37:15,931 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label06_true-unreach-call_false-termination.c [2018-10-24 21:37:15,941 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:37:15,951 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:37:15,969 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:37:16,009 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:37:16,009 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:37:16,009 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:37:16,010 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:37:16,010 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:37:16,010 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:37:16,010 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:37:16,011 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:37:16,040 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-24 21:37:16,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-24 21:37:16,052 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:37:16,053 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] [2018-10-24 21:37:16,055 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:37:16,061 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:37:16,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1354853180, now seen corresponding path program 1 times [2018-10-24 21:37:16,064 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:37:16,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:37:16,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:37:16,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:37:16,114 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:37:16,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:37:16,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:37:16,646 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:37:16,647 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:37:16,647 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:37:16,655 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:37:16,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:37:16,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:37:16,675 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-10-24 21:37:19,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:37:19,913 INFO L93 Difference]: Finished difference Result 894 states and 1610 transitions. [2018-10-24 21:37:19,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:37:19,926 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2018-10-24 21:37:19,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:37:19,966 INFO L225 Difference]: With dead ends: 894 [2018-10-24 21:37:19,966 INFO L226 Difference]: Without dead ends: 633 [2018-10-24 21:37:19,979 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:37:19,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-10-24 21:37:20,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 434. [2018-10-24 21:37:20,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-24 21:37:20,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 662 transitions. [2018-10-24 21:37:20,067 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 662 transitions. Word has length 68 [2018-10-24 21:37:20,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:37:20,068 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 662 transitions. [2018-10-24 21:37:20,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:37:20,069 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 662 transitions. [2018-10-24 21:37:20,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-24 21:37:20,078 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:37:20,079 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:37:20,079 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:37:20,079 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:37:20,080 INFO L82 PathProgramCache]: Analyzing trace with hash -623503772, now seen corresponding path program 1 times [2018-10-24 21:37:20,080 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:37:20,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:37:20,081 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:37:20,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:37:20,082 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:37:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:37:20,411 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:37:20,411 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:37:20,411 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:37:20,412 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:37:20,414 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:37:20,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:37:20,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:37:20,415 INFO L87 Difference]: Start difference. First operand 434 states and 662 transitions. Second operand 4 states. [2018-10-24 21:37:23,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:37:23,298 INFO L93 Difference]: Finished difference Result 1594 states and 2540 transitions. [2018-10-24 21:37:23,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:37:23,306 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2018-10-24 21:37:23,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:37:23,317 INFO L225 Difference]: With dead ends: 1594 [2018-10-24 21:37:23,317 INFO L226 Difference]: Without dead ends: 1166 [2018-10-24 21:37:23,323 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:37:23,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2018-10-24 21:37:23,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1166. [2018-10-24 21:37:23,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1166 states. [2018-10-24 21:37:23,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1711 transitions. [2018-10-24 21:37:23,389 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1711 transitions. Word has length 152 [2018-10-24 21:37:23,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:37:23,390 INFO L481 AbstractCegarLoop]: Abstraction has 1166 states and 1711 transitions. [2018-10-24 21:37:23,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:37:23,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1711 transitions. [2018-10-24 21:37:23,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-10-24 21:37:23,406 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:37:23,408 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:37:23,408 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:37:23,408 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:37:23,408 INFO L82 PathProgramCache]: Analyzing trace with hash -392846149, now seen corresponding path program 1 times [2018-10-24 21:37:23,409 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:37:23,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:37:23,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:37:23,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:37:23,411 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:37:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:37:23,834 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:37:24,274 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:37:24,275 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:37:24,275 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:37:24,275 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:37:24,277 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:37:24,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:37:24,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:37:24,277 INFO L87 Difference]: Start difference. First operand 1166 states and 1711 transitions. Second operand 6 states. [2018-10-24 21:37:27,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:37:27,917 INFO L93 Difference]: Finished difference Result 3114 states and 4807 transitions. [2018-10-24 21:37:27,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:37:27,918 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 209 [2018-10-24 21:37:27,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:37:27,945 INFO L225 Difference]: With dead ends: 3114 [2018-10-24 21:37:27,946 INFO L226 Difference]: Without dead ends: 1954 [2018-10-24 21:37:27,957 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:37:27,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2018-10-24 21:37:28,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1918. [2018-10-24 21:37:28,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1918 states. [2018-10-24 21:37:28,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1918 states to 1918 states and 2787 transitions. [2018-10-24 21:37:28,057 INFO L78 Accepts]: Start accepts. Automaton has 1918 states and 2787 transitions. Word has length 209 [2018-10-24 21:37:28,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:37:28,058 INFO L481 AbstractCegarLoop]: Abstraction has 1918 states and 2787 transitions. [2018-10-24 21:37:28,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:37:28,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1918 states and 2787 transitions. [2018-10-24 21:37:28,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-10-24 21:37:28,067 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:37:28,067 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, 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] [2018-10-24 21:37:28,068 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:37:28,068 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:37:28,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1160644629, now seen corresponding path program 1 times [2018-10-24 21:37:28,068 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:37:28,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:37:28,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:37:28,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:37:28,070 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:37:28,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:37:28,651 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:37:28,651 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:37:28,651 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:37:28,654 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 242 with the following transitions: [2018-10-24 21:37:28,656 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [445], [447], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 21:37:28,755 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:37:28,755 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:37:30,773 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:37:30,774 INFO L272 AbstractInterpreter]: Visited 101 different actions 101 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 21:37:30,784 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:37:30,785 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:37:33,172 INFO L232 lantSequenceWeakener]: Weakened 233 states. On average, predicates are now at 78.33% of their original sizes. [2018-10-24 21:37:33,172 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:37:33,547 INFO L413 sIntCurrentIteration]: We have 240 unified AI predicates [2018-10-24 21:37:33,547 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:37:33,548 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:37:33,549 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 21:37:33,549 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:37:33,550 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 21:37:33,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 21:37:33,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:37:33,550 INFO L87 Difference]: Start difference. First operand 1918 states and 2787 transitions. Second operand 7 states. [2018-10-24 21:37:35,734 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:38:04,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:38:04,587 INFO L93 Difference]: Finished difference Result 4015 states and 5797 transitions. [2018-10-24 21:38:04,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:38:04,587 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 241 [2018-10-24 21:38:04,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:38:04,600 INFO L225 Difference]: With dead ends: 4015 [2018-10-24 21:38:04,600 INFO L226 Difference]: Without dead ends: 2103 [2018-10-24 21:38:04,612 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 241 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:38:04,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2103 states. [2018-10-24 21:38:04,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2103 to 2101. [2018-10-24 21:38:04,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2101 states. [2018-10-24 21:38:04,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2101 states to 2101 states and 2978 transitions. [2018-10-24 21:38:04,679 INFO L78 Accepts]: Start accepts. Automaton has 2101 states and 2978 transitions. Word has length 241 [2018-10-24 21:38:04,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:38:04,680 INFO L481 AbstractCegarLoop]: Abstraction has 2101 states and 2978 transitions. [2018-10-24 21:38:04,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 21:38:04,680 INFO L276 IsEmpty]: Start isEmpty. Operand 2101 states and 2978 transitions. [2018-10-24 21:38:04,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-10-24 21:38:04,690 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:38:04,691 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 21:38:04,691 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:38:04,692 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:38:04,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1825997348, now seen corresponding path program 1 times [2018-10-24 21:38:04,692 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:38:04,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:38:04,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:38:04,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:38:04,694 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:38:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:38:05,630 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 271 proven. 146 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:38:05,630 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:38:05,630 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:38:05,631 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 327 with the following transitions: [2018-10-24 21:38:05,631 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [445], [447], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 21:38:05,636 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:38:05,637 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:38:09,238 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:38:09,239 INFO L272 AbstractInterpreter]: Visited 105 different actions 203 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 21:38:09,245 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:38:09,245 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:38:12,920 INFO L232 lantSequenceWeakener]: Weakened 69 states. On average, predicates are now at 77.67% of their original sizes. [2018-10-24 21:38:12,921 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:39:03,850 INFO L413 sIntCurrentIteration]: We have 325 unified AI predicates [2018-10-24 21:39:03,851 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:39:03,851 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:39:03,852 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [12] total 28 [2018-10-24 21:39:03,852 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:39:03,853 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-24 21:39:03,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-24 21:39:03,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2018-10-24 21:39:03,853 INFO L87 Difference]: Start difference. First operand 2101 states and 2978 transitions. Second operand 18 states. [2018-10-24 21:40:25,026 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 21:41:00,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-24 21:41:00,843 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:41:00,848 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:41:00,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:41:00 BoogieIcfgContainer [2018-10-24 21:41:00,849 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:41:00,850 INFO L168 Benchmark]: Toolchain (without parser) took 229942.85 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -935.7 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-24 21:41:00,851 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:41:00,851 INFO L168 Benchmark]: CACSL2BoogieTranslator took 835.51 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-24 21:41:00,852 INFO L168 Benchmark]: Boogie Procedure Inliner took 251.99 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 711.5 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -799.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-24 21:41:00,853 INFO L168 Benchmark]: Boogie Preprocessor took 109.09 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:41:00,854 INFO L168 Benchmark]: RCFGBuilder took 3813.43 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 133.4 MB). Peak memory consumption was 133.4 MB. Max. memory is 7.1 GB. [2018-10-24 21:41:00,855 INFO L168 Benchmark]: TraceAbstraction took 224927.04 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.3 GB in the end (delta: -325.9 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-24 21:41:00,860 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 835.51 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 251.99 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 711.5 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -799.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.09 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3813.43 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 133.4 MB). Peak memory consumption was 133.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 224927.04 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.3 GB in the end (delta: -325.9 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 187]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 187). Cancelled while BasicCegarLoop was constructing difference of abstraction (2101states) and FLOYD_HOARE automaton (currently 18 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (1085 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 224.8s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 157.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 682 SDtfs, 3203 SDslu, 604 SDs, 0 SdLazy, 5102 SolverSat, 1186 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 59.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 593 GetRequests, 493 SyntacticMatches, 61 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 53.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2101occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.7s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9956746184429909 AbsIntWeakeningRatio, 0.10265486725663717 AbsIntAvgWeakeningVarsNumRemoved, 563.1769911504425 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 237 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 996 NumberOfCodeBlocks, 996 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 991 ConstructedInterpolants, 0 QuantifiedInterpolants, 1797619 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 595/743 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown