java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-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_label12_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:16:33,100 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:16:33,102 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:16:33,117 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:16:33,117 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:16:33,118 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:16:33,120 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:16:33,122 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:16:33,123 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:16:33,124 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:16:33,125 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:16:33,125 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:16:33,126 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:16:33,127 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:16:33,128 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:16:33,129 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:16:33,130 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:16:33,132 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:16:33,134 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:16:33,135 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:16:33,136 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:16:33,138 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:16:33,140 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 00:16:33,149 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 00:16:33,178 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:16:33,178 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:16:33,179 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:16:33,179 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:16:33,179 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:16:33,180 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:16:33,180 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:16:33,180 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:16:33,180 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:16:33,180 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:16:33,181 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:16:33,181 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:16:33,181 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:16:33,182 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:16:33,182 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:16:33,182 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:16:33,182 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:16:33,182 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:16:33,183 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:16:33,183 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:16:33,183 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:16:33,183 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:16:33,183 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:16:33,183 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:16:33,184 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:16:33,184 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:16:33,184 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:16:33,184 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:16:33,184 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:16:33,185 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:16:33,185 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:16:33,185 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:16:33,185 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:16:33,185 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:16:33,243 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:16:33,262 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:16:33,266 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:16:33,268 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:16:33,268 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:16:33,269 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label12_false-unreach-call_false-termination.c [2018-11-07 00:16:33,332 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a8fc1ec8/ca5f42ab41d048668e55899d445dbe5b/FLAGf1e99d78e [2018-11-07 00:16:33,961 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:16:33,962 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label12_false-unreach-call_false-termination.c [2018-11-07 00:16:33,977 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a8fc1ec8/ca5f42ab41d048668e55899d445dbe5b/FLAGf1e99d78e [2018-11-07 00:16:33,995 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a8fc1ec8/ca5f42ab41d048668e55899d445dbe5b [2018-11-07 00:16:34,011 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:16:34,013 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:16:34,014 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:16:34,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:16:34,018 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:16:34,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:16:33" (1/1) ... [2018-11-07 00:16:34,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a6bed07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:34, skipping insertion in model container [2018-11-07 00:16:34,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:16:33" (1/1) ... [2018-11-07 00:16:34,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:16:34,122 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:16:34,672 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:16:34,677 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:16:34,821 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:16:34,840 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:16:34,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:34 WrapperNode [2018-11-07 00:16:34,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:16:34,842 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:16:34,842 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:16:34,843 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:16:34,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:34" (1/1) ... [2018-11-07 00:16:34,974 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:34" (1/1) ... [2018-11-07 00:16:34,991 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:16:34,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:16:34,992 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:16:34,992 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:16:35,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:34" (1/1) ... [2018-11-07 00:16:35,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:34" (1/1) ... [2018-11-07 00:16:35,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:34" (1/1) ... [2018-11-07 00:16:35,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:34" (1/1) ... [2018-11-07 00:16:35,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:34" (1/1) ... [2018-11-07 00:16:35,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:34" (1/1) ... [2018-11-07 00:16:35,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:34" (1/1) ... [2018-11-07 00:16:35,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:16:35,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:16:35,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:16:35,104 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:16:35,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 00:16:35,190 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:16:35,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:16:35,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:16:35,191 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:16:35,191 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:16:35,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:16:35,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:16:35,192 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:16:35,193 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:16:38,635 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:16:38,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:16:38 BoogieIcfgContainer [2018-11-07 00:16:38,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:16:38,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:16:38,640 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:16:38,644 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:16:38,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:16:33" (1/3) ... [2018-11-07 00:16:38,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fb28a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:16:38, skipping insertion in model container [2018-11-07 00:16:38,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:34" (2/3) ... [2018-11-07 00:16:38,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fb28a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:16:38, skipping insertion in model container [2018-11-07 00:16:38,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:16:38" (3/3) ... [2018-11-07 00:16:38,650 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label12_false-unreach-call_false-termination.c [2018-11-07 00:16:38,661 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:16:38,672 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:16:38,690 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:16:38,737 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:16:38,737 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:16:38,737 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:16:38,737 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:16:38,738 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:16:38,738 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:16:38,738 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:16:38,738 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:16:38,764 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 00:16:38,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-07 00:16:38,771 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:16:38,772 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:16:38,774 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:16:38,782 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:16:38,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1289249233, now seen corresponding path program 1 times [2018-11-07 00:16:38,786 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:16:38,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:16:38,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:16:38,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:16:38,835 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:16:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:16:39,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:16:39,202 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:16:39,202 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 00:16:39,203 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:16:39,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 00:16:39,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 00:16:39,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:16:39,230 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-11-07 00:16:40,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:16:40,943 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-11-07 00:16:40,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 00:16:40,947 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-11-07 00:16:40,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:16:40,967 INFO L225 Difference]: With dead ends: 691 [2018-11-07 00:16:40,967 INFO L226 Difference]: Without dead ends: 434 [2018-11-07 00:16:40,974 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:16:40,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-11-07 00:16:41,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-11-07 00:16:41,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-11-07 00:16:41,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-11-07 00:16:41,058 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 15 [2018-11-07 00:16:41,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:16:41,058 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-11-07 00:16:41,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 00:16:41,059 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-11-07 00:16:41,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-11-07 00:16:41,064 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:16:41,064 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 00:16:41,065 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:16:41,065 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:16:41,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1032198988, now seen corresponding path program 1 times [2018-11-07 00:16:41,065 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:16:41,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:16:41,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:16:41,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:16:41,067 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:16:41,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:16:41,402 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:16:41,402 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:16:41,402 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:16:41,403 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:16:41,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:16:41,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:16:41,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:16:41,406 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-11-07 00:16:44,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:16:44,962 INFO L93 Difference]: Finished difference Result 1587 states and 2933 transitions. [2018-11-07 00:16:44,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:16:44,964 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2018-11-07 00:16:44,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:16:44,975 INFO L225 Difference]: With dead ends: 1587 [2018-11-07 00:16:44,975 INFO L226 Difference]: Without dead ends: 1159 [2018-11-07 00:16:44,980 INFO L604 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 [2018-11-07 00:16:44,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2018-11-07 00:16:45,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1152. [2018-11-07 00:16:45,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1152 states. [2018-11-07 00:16:45,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1885 transitions. [2018-11-07 00:16:45,059 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1885 transitions. Word has length 85 [2018-11-07 00:16:45,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:16:45,060 INFO L480 AbstractCegarLoop]: Abstraction has 1152 states and 1885 transitions. [2018-11-07 00:16:45,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:16:45,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1885 transitions. [2018-11-07 00:16:45,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-11-07 00:16:45,073 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:16:45,074 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:16:45,074 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:16:45,074 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:16:45,074 INFO L82 PathProgramCache]: Analyzing trace with hash 273751564, now seen corresponding path program 1 times [2018-11-07 00:16:45,075 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:16:45,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:16:45,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:16:45,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:16:45,076 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:16:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:16:45,809 WARN L179 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-11-07 00:16:46,233 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-07 00:16:46,372 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:16:46,373 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:16:46,373 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:16:46,373 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:16:46,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:16:46,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:16:46,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:16:46,374 INFO L87 Difference]: Start difference. First operand 1152 states and 1885 transitions. Second operand 6 states. [2018-11-07 00:16:50,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:16:50,453 INFO L93 Difference]: Finished difference Result 3172 states and 5229 transitions. [2018-11-07 00:16:50,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 00:16:50,454 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2018-11-07 00:16:50,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:16:50,467 INFO L225 Difference]: With dead ends: 3172 [2018-11-07 00:16:50,467 INFO L226 Difference]: Without dead ends: 2026 [2018-11-07 00:16:50,475 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-07 00:16:50,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2018-11-07 00:16:50,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 1916. [2018-11-07 00:16:50,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1916 states. [2018-11-07 00:16:50,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2950 transitions. [2018-11-07 00:16:50,536 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2950 transitions. Word has length 181 [2018-11-07 00:16:50,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:16:50,537 INFO L480 AbstractCegarLoop]: Abstraction has 1916 states and 2950 transitions. [2018-11-07 00:16:50,537 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:16:50,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2950 transitions. [2018-11-07 00:16:50,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-11-07 00:16:50,544 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:16:50,544 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:16:50,544 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:16:50,545 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:16:50,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1140820546, now seen corresponding path program 1 times [2018-11-07 00:16:50,545 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:16:50,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:16:50,546 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:16:50,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:16:50,546 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:16:50,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:16:50,777 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 16 proven. 66 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 00:16:50,778 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:16:50,778 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:16:50,779 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 253 with the following transitions: [2018-11-07 00:16:50,782 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [21], [23], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [878], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 00:16:50,864 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:16:50,865 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:16:54,566 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:16:57,190 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:16:57,192 INFO L272 AbstractInterpreter]: Visited 171 different actions 171 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 00:16:57,224 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:16:57,225 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:16:59,711 INFO L227 lantSequenceWeakener]: Weakened 244 states. On average, predicates are now at 77.3% of their original sizes. [2018-11-07 00:16:59,711 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:17:00,305 INFO L415 sIntCurrentIteration]: We unified 251 AI predicates to 251 [2018-11-07 00:17:00,305 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:17:00,306 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:17:00,306 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2018-11-07 00:17:00,306 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:17:00,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 00:17:00,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 00:17:00,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:17:00,308 INFO L87 Difference]: Start difference. First operand 1916 states and 2950 transitions. Second operand 8 states. [2018-11-07 00:17:13,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:17:13,868 INFO L93 Difference]: Finished difference Result 4011 states and 6114 transitions. [2018-11-07 00:17:13,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 00:17:13,868 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 252 [2018-11-07 00:17:13,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:17:13,880 INFO L225 Difference]: With dead ends: 4011 [2018-11-07 00:17:13,881 INFO L226 Difference]: Without dead ends: 2101 [2018-11-07 00:17:13,888 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 253 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 00:17:13,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2101 states. [2018-11-07 00:17:13,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2101 to 2099. [2018-11-07 00:17:13,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2099 states. [2018-11-07 00:17:13,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2099 states to 2099 states and 3141 transitions. [2018-11-07 00:17:13,950 INFO L78 Accepts]: Start accepts. Automaton has 2099 states and 3141 transitions. Word has length 252 [2018-11-07 00:17:13,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:17:13,951 INFO L480 AbstractCegarLoop]: Abstraction has 2099 states and 3141 transitions. [2018-11-07 00:17:13,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 00:17:13,951 INFO L276 IsEmpty]: Start isEmpty. Operand 2099 states and 3141 transitions. [2018-11-07 00:17:13,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-11-07 00:17:13,959 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:17:13,959 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2018-11-07 00:17:13,960 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:17:13,960 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:17:13,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1464242370, now seen corresponding path program 1 times [2018-11-07 00:17:13,960 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:17:13,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:17:13,962 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:17:13,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:17:13,962 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:17:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:17:14,504 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 00:17:14,712 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 00:17:15,324 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:17:15,324 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:17:15,324 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:17:15,324 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 267 with the following transitions: [2018-11-07 00:17:15,325 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [21], [23], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [878], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 00:17:15,332 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:17:15,333 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:17:19,256 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:17:25,631 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:17:25,631 INFO L272 AbstractInterpreter]: Visited 174 different actions 341 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 00:17:25,645 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:17:25,645 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:17:28,415 INFO L227 lantSequenceWeakener]: Weakened 26 states. On average, predicates are now at 78.63% of their original sizes. [2018-11-07 00:17:28,415 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:18:01,495 INFO L415 sIntCurrentIteration]: We unified 265 AI predicates to 265 [2018-11-07 00:18:01,495 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:18:01,496 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:18:01,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [14] total 30 [2018-11-07 00:18:01,496 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:18:01,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 00:18:01,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 00:18:01,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2018-11-07 00:18:01,498 INFO L87 Difference]: Start difference. First operand 2099 states and 3141 transitions. Second operand 18 states. Received shutdown request... [2018-11-07 00:20:40,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-07 00:20:40,508 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 00:20:40,514 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 00:20:40,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:20:40 BoogieIcfgContainer [2018-11-07 00:20:40,514 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 00:20:40,515 INFO L168 Benchmark]: Toolchain (without parser) took 246503.48 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-11-07 00:20:40,516 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. [2018-11-07 00:20:40,517 INFO L168 Benchmark]: CACSL2BoogieTranslator took 828.00 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 00:20:40,518 INFO L168 Benchmark]: Boogie Procedure Inliner took 149.13 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 732.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -818.7 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2018-11-07 00:20:40,519 INFO L168 Benchmark]: Boogie Preprocessor took 111.55 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 00:20:40,519 INFO L168 Benchmark]: RCFGBuilder took 3535.50 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 131.2 MB). Peak memory consumption was 131.2 MB. Max. memory is 7.1 GB. [2018-11-07 00:20:40,520 INFO L168 Benchmark]: TraceAbstraction took 241874.31 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 2.0 GB). Free memory was 2.1 GB in the beginning and 2.7 GB in the end (delta: -647.7 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-11-07 00:20:40,525 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 828.00 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 149.13 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 732.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -818.7 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.55 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3535.50 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 131.2 MB). Peak memory consumption was 131.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 241874.31 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 2.0 GB). Free memory was 2.1 GB in the beginning and 2.7 GB in the end (delta: -647.7 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 28]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 28). Cancelled while BasicCegarLoop was constructing difference of abstraction (2099states) and FLOYD_HOARE automaton (currently 25 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (1827 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 241.7s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 182.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 580 SDtfs, 3836 SDslu, 447 SDs, 0 SdLazy, 6832 SolverSat, 1195 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 71.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 553 GetRequests, 460 SyntacticMatches, 45 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 37.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2099occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 16.7s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9957589034939893 AbsIntWeakeningRatio, 0.10077519379844961 AbsIntAvgWeakeningVarsNumRemoved, 664.5813953488372 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 119 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 799 NumberOfCodeBlocks, 799 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 794 ConstructedInterpolants, 0 QuantifiedInterpolants, 2553229 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 136/204 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown