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_label36_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 01:36:06,177 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 01:36:06,180 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 01:36:06,197 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 01:36:06,198 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 01:36:06,200 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 01:36:06,201 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 01:36:06,203 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 01:36:06,206 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 01:36:06,206 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 01:36:06,208 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 01:36:06,209 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 01:36:06,210 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 01:36:06,213 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 01:36:06,219 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 01:36:06,220 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 01:36:06,226 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 01:36:06,228 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 01:36:06,230 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 01:36:06,231 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 01:36:06,235 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 01:36:06,237 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 01:36:06,240 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 01:36:06,255 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 01:36:06,285 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 01:36:06,287 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 01:36:06,288 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 01:36:06,288 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 01:36:06,289 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 01:36:06,289 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 01:36:06,289 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 01:36:06,289 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 01:36:06,289 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 01:36:06,290 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 01:36:06,290 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 01:36:06,290 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 01:36:06,291 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 01:36:06,291 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 01:36:06,291 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 01:36:06,291 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 01:36:06,291 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 01:36:06,292 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 01:36:06,292 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 01:36:06,292 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 01:36:06,292 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 01:36:06,292 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 01:36:06,293 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 01:36:06,294 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 01:36:06,294 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:36:06,294 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 01:36:06,294 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 01:36:06,294 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 01:36:06,295 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 01:36:06,295 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 01:36:06,295 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 01:36:06,295 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 01:36:06,295 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 01:36:06,296 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 01:36:06,344 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 01:36:06,357 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 01:36:06,361 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 01:36:06,362 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 01:36:06,363 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 01:36:06,363 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label36_true-unreach-call_false-termination.c [2018-10-24 01:36:06,429 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c8af4636c/d16f5bc449f34909a2c99abb03f0ebf5/FLAGc772f2940 [2018-10-24 01:36:06,985 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 01:36:06,986 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label36_true-unreach-call_false-termination.c [2018-10-24 01:36:07,015 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c8af4636c/d16f5bc449f34909a2c99abb03f0ebf5/FLAGc772f2940 [2018-10-24 01:36:07,038 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c8af4636c/d16f5bc449f34909a2c99abb03f0ebf5 [2018-10-24 01:36:07,050 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 01:36:07,053 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 01:36:07,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 01:36:07,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 01:36:07,058 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 01:36:07,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:36:07" (1/1) ... [2018-10-24 01:36:07,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d3e8be9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:36:07, skipping insertion in model container [2018-10-24 01:36:07,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:36:07" (1/1) ... [2018-10-24 01:36:07,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 01:36:07,137 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 01:36:07,702 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:36:07,707 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 01:36:07,863 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:36:07,894 INFO L193 MainTranslator]: Completed translation [2018-10-24 01:36:07,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:36:07 WrapperNode [2018-10-24 01:36:07,894 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 01:36:07,895 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 01:36:07,896 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 01:36:07,900 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 01:36:07,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:36:07" (1/1) ... [2018-10-24 01:36:07,964 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:36:07" (1/1) ... [2018-10-24 01:36:08,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 01:36:08,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 01:36:08,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 01:36:08,079 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 01:36:08,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:36:07" (1/1) ... [2018-10-24 01:36:08,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:36:07" (1/1) ... [2018-10-24 01:36:08,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:36:07" (1/1) ... [2018-10-24 01:36:08,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:36:07" (1/1) ... [2018-10-24 01:36:08,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:36:07" (1/1) ... [2018-10-24 01:36:08,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:36:07" (1/1) ... [2018-10-24 01:36:08,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:36:07" (1/1) ... [2018-10-24 01:36:08,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 01:36:08,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 01:36:08,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 01:36:08,348 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 01:36:08,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:36:07" (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 01:36:08,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 01:36:08,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 01:36:08,426 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 01:36:08,426 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 01:36:08,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 01:36:08,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 01:36:08,427 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 01:36:08,427 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 01:36:11,887 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 01:36:11,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:36:11 BoogieIcfgContainer [2018-10-24 01:36:11,888 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 01:36:11,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 01:36:11,889 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 01:36:11,892 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 01:36:11,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:36:07" (1/3) ... [2018-10-24 01:36:11,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36e94f36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:36:11, skipping insertion in model container [2018-10-24 01:36:11,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:36:07" (2/3) ... [2018-10-24 01:36:11,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36e94f36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:36:11, skipping insertion in model container [2018-10-24 01:36:11,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:36:11" (3/3) ... [2018-10-24 01:36:11,897 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label36_true-unreach-call_false-termination.c [2018-10-24 01:36:11,907 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 01:36:11,917 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 01:36:11,935 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 01:36:11,976 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 01:36:11,976 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 01:36:11,976 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 01:36:11,976 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 01:36:11,976 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 01:36:11,977 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 01:36:11,977 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 01:36:11,977 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 01:36:12,006 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-24 01:36:12,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-24 01:36:12,016 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:36:12,018 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] [2018-10-24 01:36:12,020 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:36:12,027 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:36:12,027 INFO L82 PathProgramCache]: Analyzing trace with hash -601836047, now seen corresponding path program 1 times [2018-10-24 01:36:12,030 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:36:12,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:36:12,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:36:12,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:36:12,087 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:36:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:36:12,545 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 01:36:12,548 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:36:12,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 01:36:12,548 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:36:12,557 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 01:36:12,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 01:36:12,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 01:36:12,575 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-24 01:36:14,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:36:14,495 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-24 01:36:14,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 01:36:14,500 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2018-10-24 01:36:14,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:36:14,532 INFO L225 Difference]: With dead ends: 691 [2018-10-24 01:36:14,532 INFO L226 Difference]: Without dead ends: 434 [2018-10-24 01:36:14,547 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 01:36:14,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-24 01:36:14,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-24 01:36:14,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-24 01:36:14,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-10-24 01:36:14,685 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 55 [2018-10-24 01:36:14,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:36:14,686 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-10-24 01:36:14,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 01:36:14,686 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-10-24 01:36:14,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-24 01:36:14,703 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:36:14,704 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:36:14,704 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:36:14,704 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:36:14,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1606390417, now seen corresponding path program 1 times [2018-10-24 01:36:14,706 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:36:14,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:36:14,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:36:14,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:36:14,708 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:36:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:36:15,065 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:36:15,066 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:36:15,066 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:36:15,066 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:36:15,068 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:36:15,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:36:15,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:36:15,069 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-10-24 01:36:17,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:36:17,297 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-10-24 01:36:17,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:36:17,299 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2018-10-24 01:36:17,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:36:17,305 INFO L225 Difference]: With dead ends: 1062 [2018-10-24 01:36:17,305 INFO L226 Difference]: Without dead ends: 634 [2018-10-24 01:36:17,308 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 01:36:17,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-10-24 01:36:17,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-10-24 01:36:17,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-10-24 01:36:17,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-10-24 01:36:17,347 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 130 [2018-10-24 01:36:17,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:36:17,348 INFO L481 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-10-24 01:36:17,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:36:17,348 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-10-24 01:36:17,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-24 01:36:17,352 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:36:17,352 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:36:17,353 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:36:17,353 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:36:17,353 INFO L82 PathProgramCache]: Analyzing trace with hash 946019240, now seen corresponding path program 1 times [2018-10-24 01:36:17,354 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:36:17,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:36:17,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:36:17,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:36:17,355 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:36:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:36:17,599 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:36:17,600 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:36:17,600 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 01:36:17,600 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:36:17,601 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 01:36:17,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 01:36:17,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:36:17,603 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 4 states. [2018-10-24 01:36:22,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:36:22,110 INFO L93 Difference]: Finished difference Result 2350 states and 4005 transitions. [2018-10-24 01:36:22,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 01:36:22,120 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2018-10-24 01:36:22,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:36:22,140 INFO L225 Difference]: With dead ends: 2350 [2018-10-24 01:36:22,140 INFO L226 Difference]: Without dead ends: 1731 [2018-10-24 01:36:22,147 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 01:36:22,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2018-10-24 01:36:22,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2018-10-24 01:36:22,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2018-10-24 01:36:22,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2670 transitions. [2018-10-24 01:36:22,226 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2670 transitions. Word has length 139 [2018-10-24 01:36:22,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:36:22,227 INFO L481 AbstractCegarLoop]: Abstraction has 1731 states and 2670 transitions. [2018-10-24 01:36:22,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 01:36:22,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2670 transitions. [2018-10-24 01:36:22,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-10-24 01:36:22,240 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:36:22,240 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 01:36:22,240 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:36:22,241 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:36:22,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1544356755, now seen corresponding path program 1 times [2018-10-24 01:36:22,241 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:36:22,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:36:22,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:36:22,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:36:22,243 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:36:22,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:36:22,819 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 32 [2018-10-24 01:36:23,190 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2018-10-24 01:36:23,353 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:36:23,354 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:36:23,354 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:36:23,355 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 264 with the following transitions: [2018-10-24 01:36:23,357 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], [341], [343], [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], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 01:36:23,430 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:36:23,430 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:36:26,300 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:36:27,662 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:36:27,663 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 01:36:27,709 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:36:27,709 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:36:30,740 INFO L232 lantSequenceWeakener]: Weakened 255 states. On average, predicates are now at 78.01% of their original sizes. [2018-10-24 01:36:30,741 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:36:31,177 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:36:31,178 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:36:31,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2018-10-24 01:36:31,178 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:36:31,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 01:36:31,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 01:36:31,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 01:36:31,180 INFO L87 Difference]: Start difference. First operand 1731 states and 2670 transitions. Second operand 7 states. [2018-10-24 01:36:50,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:36:50,384 INFO L93 Difference]: Finished difference Result 3641 states and 5626 transitions. [2018-10-24 01:36:50,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:36:50,384 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 263 [2018-10-24 01:36:50,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:36:50,396 INFO L225 Difference]: With dead ends: 3641 [2018-10-24 01:36:50,396 INFO L226 Difference]: Without dead ends: 1916 [2018-10-24 01:36:50,404 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 263 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 01:36:50,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2018-10-24 01:36:50,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1914. [2018-10-24 01:36:50,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1914 states. [2018-10-24 01:36:50,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2861 transitions. [2018-10-24 01:36:50,458 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2861 transitions. Word has length 263 [2018-10-24 01:36:50,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:36:50,459 INFO L481 AbstractCegarLoop]: Abstraction has 1914 states and 2861 transitions. [2018-10-24 01:36:50,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 01:36:50,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2861 transitions. [2018-10-24 01:36:50,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-10-24 01:36:50,470 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:36:50,470 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, 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, 1, 1, 1, 1, 1, 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 01:36:50,471 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:36:50,471 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:36:50,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1780119455, now seen corresponding path program 1 times [2018-10-24 01:36:50,471 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:36:50,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:36:50,473 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:36:50,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:36:50,473 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:36:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:36:51,011 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 01:36:51,216 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 01:36:51,432 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 01:36:51,934 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 232 proven. 172 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 01:36:51,934 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:36:51,934 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:36:51,935 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 349 with the following transitions: [2018-10-24 01:36:51,935 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], [341], [343], [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], [594], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 01:36:51,941 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:36:51,942 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:36:54,395 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:36:57,574 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:36:57,575 INFO L272 AbstractInterpreter]: Visited 122 different actions 237 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 01:36:57,586 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:36:57,586 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:37:00,818 INFO L232 lantSequenceWeakener]: Weakened 111 states. On average, predicates are now at 77.81% of their original sizes. [2018-10-24 01:37:00,819 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:37:36,014 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:37:36,015 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:37:36,015 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [12] total 28 [2018-10-24 01:37:36,016 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:37:36,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-24 01:37:36,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-24 01:37:36,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2018-10-24 01:37:36,017 INFO L87 Difference]: Start difference. First operand 1914 states and 2861 transitions. Second operand 18 states. [2018-10-24 01:40:07,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:40:07,774 INFO L93 Difference]: Finished difference Result 4389 states and 6604 transitions. [2018-10-24 01:40:07,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-24 01:40:07,775 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 348 [2018-10-24 01:40:07,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:40:07,788 INFO L225 Difference]: With dead ends: 4389 [2018-10-24 01:40:07,788 INFO L226 Difference]: Without dead ends: 2664 [2018-10-24 01:40:07,798 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 353 GetRequests, 291 SyntacticMatches, 40 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 36.1s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2018-10-24 01:40:07,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2018-10-24 01:40:07,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2447. [2018-10-24 01:40:07,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2447 states. [2018-10-24 01:40:07,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2447 states to 2447 states and 3421 transitions. [2018-10-24 01:40:07,959 INFO L78 Accepts]: Start accepts. Automaton has 2447 states and 3421 transitions. Word has length 348 [2018-10-24 01:40:07,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:40:07,960 INFO L481 AbstractCegarLoop]: Abstraction has 2447 states and 3421 transitions. [2018-10-24 01:40:07,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-24 01:40:07,960 INFO L276 IsEmpty]: Start isEmpty. Operand 2447 states and 3421 transitions. [2018-10-24 01:40:07,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-10-24 01:40:07,973 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:40:07,974 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, 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] [2018-10-24 01:40:07,974 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:40:07,974 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:40:07,975 INFO L82 PathProgramCache]: Analyzing trace with hash -490485645, now seen corresponding path program 1 times [2018-10-24 01:40:07,975 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:40:07,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:40:07,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:40:07,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:40:07,976 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:40:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-24 01:40:08,494 WARN L187 SmtUtils]: Removed 11 from assertion stack [2018-10-24 01:40:08,495 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 01:40:08,500 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 01:40:08,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:40:08 BoogieIcfgContainer [2018-10-24 01:40:08,500 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 01:40:08,501 INFO L168 Benchmark]: Toolchain (without parser) took 241450.59 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 2.1 GB in the end (delta: -713.1 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-24 01:40:08,503 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 01:40:08,503 INFO L168 Benchmark]: CACSL2BoogieTranslator took 841.41 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-10-24 01:40:08,504 INFO L168 Benchmark]: Boogie Procedure Inliner took 182.53 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-10-24 01:40:08,505 INFO L168 Benchmark]: Boogie Preprocessor took 269.09 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -841.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. [2018-10-24 01:40:08,506 INFO L168 Benchmark]: RCFGBuilder took 3540.25 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 137.6 MB). Peak memory consumption was 137.6 MB. Max. memory is 7.1 GB. [2018-10-24 01:40:08,507 INFO L168 Benchmark]: TraceAbstraction took 236611.66 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 2.1 GB in the end (delta: -72.5 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-24 01:40:08,512 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 841.41 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 182.53 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 269.09 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -841.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3540.25 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 137.6 MB). Peak memory consumption was 137.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 236611.66 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 2.1 GB in the end (delta: -72.5 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 148]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 148). Cancelled while BasicCegarLoop was analyzing trace of length 375 with TraceHistMax 4,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 40. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 236.5s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 179.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 776 SDtfs, 5016 SDslu, 569 SDs, 0 SdLazy, 6131 SolverSat, 1330 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 72.8s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 636 GetRequests, 555 SyntacticMatches, 43 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 36.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2447occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.0s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9959871254848764 AbsIntWeakeningRatio, 0.09523809523809523 AbsIntAvgWeakeningVarsNumRemoved, 609.5944170771756 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 228 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 935 NumberOfCodeBlocks, 935 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 930 ConstructedInterpolants, 0 QuantifiedInterpolants, 2579045 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 522/696 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown