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_label28_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:17:42,730 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:17:42,732 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:17:42,744 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:17:42,744 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:17:42,745 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:17:42,746 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:17:42,748 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:17:42,750 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:17:42,751 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:17:42,751 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:17:42,752 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:17:42,753 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:17:42,754 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:17:42,755 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:17:42,755 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:17:42,756 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:17:42,758 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:17:42,760 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:17:42,762 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:17:42,763 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:17:42,764 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:17:42,767 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 00:17:42,776 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 00:17:42,792 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:17:42,792 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:17:42,793 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:17:42,793 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:17:42,794 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:17:42,794 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:17:42,794 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:17:42,795 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:17:42,795 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:17:42,795 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:17:42,795 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:17:42,796 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:17:42,797 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:17:42,797 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:17:42,797 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:17:42,797 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:17:42,798 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:17:42,798 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:17:42,798 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:17:42,798 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:17:42,799 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:17:42,799 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:17:42,799 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:17:42,799 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:17:42,800 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:17:42,800 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:17:42,800 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:17:42,800 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:17:42,801 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:17:42,801 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:17:42,801 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:17:42,801 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:17:42,802 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:17:42,802 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:17:42,845 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:17:42,858 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:17:42,862 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:17:42,863 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:17:42,864 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:17:42,865 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label28_false-unreach-call_false-termination.c [2018-11-07 00:17:42,928 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9efcd3a25/93a7d5f5783241e0825c1b732faaec94/FLAG5e26f4330 [2018-11-07 00:17:43,471 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:17:43,472 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label28_false-unreach-call_false-termination.c [2018-11-07 00:17:43,500 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9efcd3a25/93a7d5f5783241e0825c1b732faaec94/FLAG5e26f4330 [2018-11-07 00:17:43,524 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9efcd3a25/93a7d5f5783241e0825c1b732faaec94 [2018-11-07 00:17:43,537 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:17:43,540 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:17:43,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:17:43,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:17:43,549 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:17:43,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:17:43" (1/1) ... [2018-11-07 00:17:43,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@edc0f83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:17:43, skipping insertion in model container [2018-11-07 00:17:43,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:17:43" (1/1) ... [2018-11-07 00:17:43,564 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:17:43,647 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:17:44,124 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:17:44,129 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:17:44,326 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:17:44,346 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:17:44,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:17:44 WrapperNode [2018-11-07 00:17:44,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:17:44,348 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:17:44,348 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:17:44,348 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:17:44,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:17:44" (1/1) ... [2018-11-07 00:17:44,467 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:17:44" (1/1) ... [2018-11-07 00:17:44,474 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:17:44,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:17:44,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:17:44,475 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:17:44,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:17:44" (1/1) ... [2018-11-07 00:17:44,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:17:44" (1/1) ... [2018-11-07 00:17:44,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:17:44" (1/1) ... [2018-11-07 00:17:44,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:17:44" (1/1) ... [2018-11-07 00:17:44,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:17:44" (1/1) ... [2018-11-07 00:17:44,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:17:44" (1/1) ... [2018-11-07 00:17:44,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:17:44" (1/1) ... [2018-11-07 00:17:44,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:17:44,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:17:44,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:17:44,586 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:17:44,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:17:44" (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 00:17:44,658 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:17:44,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:17:44,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:17:44,659 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:17:44,659 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:17:44,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:17:44,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:17:44,659 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:17:44,660 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:17:48,301 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:17:48,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:17:48 BoogieIcfgContainer [2018-11-07 00:17:48,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:17:48,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:17:48,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:17:48,306 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:17:48,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:17:43" (1/3) ... [2018-11-07 00:17:48,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1057d8a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:17:48, skipping insertion in model container [2018-11-07 00:17:48,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:17:44" (2/3) ... [2018-11-07 00:17:48,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1057d8a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:17:48, skipping insertion in model container [2018-11-07 00:17:48,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:17:48" (3/3) ... [2018-11-07 00:17:48,310 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label28_false-unreach-call_false-termination.c [2018-11-07 00:17:48,320 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:17:48,330 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:17:48,345 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:17:48,384 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:17:48,384 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:17:48,384 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:17:48,385 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:17:48,385 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:17:48,386 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:17:48,386 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:17:48,386 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:17:48,413 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 00:17:48,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-07 00:17:48,419 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:17:48,421 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:17:48,423 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:17:48,428 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:17:48,429 INFO L82 PathProgramCache]: Analyzing trace with hash 2018061625, now seen corresponding path program 1 times [2018-11-07 00:17:48,431 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:17:48,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:17:48,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:17:48,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:17:48,481 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:17:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:17:48,790 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 00:17:48,792 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:17:48,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 00:17:48,793 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:17:48,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 00:17:48,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 00:17:48,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:17:48,821 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-11-07 00:17:51,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:17:51,893 INFO L93 Difference]: Finished difference Result 894 states and 1610 transitions. [2018-11-07 00:17:51,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 00:17:51,906 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-11-07 00:17:51,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:17:51,931 INFO L225 Difference]: With dead ends: 894 [2018-11-07 00:17:51,931 INFO L226 Difference]: Without dead ends: 633 [2018-11-07 00:17:51,939 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:17:51,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-11-07 00:17:52,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 434. [2018-11-07 00:17:52,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-11-07 00:17:52,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 662 transitions. [2018-11-07 00:17:52,025 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 662 transitions. Word has length 17 [2018-11-07 00:17:52,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:17:52,025 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 662 transitions. [2018-11-07 00:17:52,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 00:17:52,026 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 662 transitions. [2018-11-07 00:17:52,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-11-07 00:17:52,032 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:17:52,034 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 00:17:52,034 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:17:52,034 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:17:52,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1257410928, now seen corresponding path program 1 times [2018-11-07 00:17:52,035 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:17:52,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:17:52,037 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:17:52,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:17:52,037 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:17:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:17:52,605 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:17:52,606 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:17:52,606 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:17:52,606 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:17:52,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:17:52,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:17:52,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:17:52,609 INFO L87 Difference]: Start difference. First operand 434 states and 662 transitions. Second operand 6 states. [2018-11-07 00:17:57,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:17:57,326 INFO L93 Difference]: Finished difference Result 1421 states and 2196 transitions. [2018-11-07 00:17:57,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 00:17:57,330 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2018-11-07 00:17:57,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:17:57,339 INFO L225 Difference]: With dead ends: 1421 [2018-11-07 00:17:57,339 INFO L226 Difference]: Without dead ends: 993 [2018-11-07 00:17:57,343 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-07 00:17:57,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2018-11-07 00:17:57,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 940. [2018-11-07 00:17:57,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 940 states. [2018-11-07 00:17:57,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1360 transitions. [2018-11-07 00:17:57,400 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1360 transitions. Word has length 101 [2018-11-07 00:17:57,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:17:57,401 INFO L480 AbstractCegarLoop]: Abstraction has 940 states and 1360 transitions. [2018-11-07 00:17:57,401 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:17:57,401 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1360 transitions. [2018-11-07 00:17:57,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-11-07 00:17:57,406 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:17:57,406 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2018-11-07 00:17:57,406 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:17:57,407 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:17:57,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1352215460, now seen corresponding path program 1 times [2018-11-07 00:17:57,407 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:17:57,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:17:57,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:17:57,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:17:57,408 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:17:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:17:57,540 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:17:57,540 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:17:57,540 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 00:17:57,541 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:17:57,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 00:17:57,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 00:17:57,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:17:57,542 INFO L87 Difference]: Start difference. First operand 940 states and 1360 transitions. Second operand 3 states. [2018-11-07 00:17:59,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:17:59,360 INFO L93 Difference]: Finished difference Result 2567 states and 3827 transitions. [2018-11-07 00:17:59,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 00:17:59,369 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2018-11-07 00:17:59,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:17:59,382 INFO L225 Difference]: With dead ends: 2567 [2018-11-07 00:17:59,383 INFO L226 Difference]: Without dead ends: 1633 [2018-11-07 00:17:59,391 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:17:59,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2018-11-07 00:17:59,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1633. [2018-11-07 00:17:59,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1633 states. [2018-11-07 00:17:59,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1633 states to 1633 states and 2213 transitions. [2018-11-07 00:17:59,451 INFO L78 Accepts]: Start accepts. Automaton has 1633 states and 2213 transitions. Word has length 127 [2018-11-07 00:17:59,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:17:59,451 INFO L480 AbstractCegarLoop]: Abstraction has 1633 states and 2213 transitions. [2018-11-07 00:17:59,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 00:17:59,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1633 states and 2213 transitions. [2018-11-07 00:17:59,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-11-07 00:17:59,457 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:17:59,463 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:17:59,463 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:17:59,463 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:17:59,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1698418821, now seen corresponding path program 1 times [2018-11-07 00:17:59,464 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:17:59,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:17:59,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:17:59,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:17:59,468 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:17:59,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:17:59,756 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:17:59,757 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:17:59,757 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:17:59,757 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:17:59,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:17:59,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:17:59,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:17:59,759 INFO L87 Difference]: Start difference. First operand 1633 states and 2213 transitions. Second operand 6 states. [2018-11-07 00:18:01,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:18:01,368 INFO L93 Difference]: Finished difference Result 3851 states and 5415 transitions. [2018-11-07 00:18:01,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:18:01,369 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2018-11-07 00:18:01,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:18:01,386 INFO L225 Difference]: With dead ends: 3851 [2018-11-07 00:18:01,386 INFO L226 Difference]: Without dead ends: 2224 [2018-11-07 00:18:01,393 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 00:18:01,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2224 states. [2018-11-07 00:18:01,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2224 to 2202. [2018-11-07 00:18:01,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2202 states. [2018-11-07 00:18:01,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2202 states to 2202 states and 2925 transitions. [2018-11-07 00:18:01,468 INFO L78 Accepts]: Start accepts. Automaton has 2202 states and 2925 transitions. Word has length 158 [2018-11-07 00:18:01,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:18:01,469 INFO L480 AbstractCegarLoop]: Abstraction has 2202 states and 2925 transitions. [2018-11-07 00:18:01,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:18:01,469 INFO L276 IsEmpty]: Start isEmpty. Operand 2202 states and 2925 transitions. [2018-11-07 00:18:01,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-11-07 00:18:01,474 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:18:01,474 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 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] [2018-11-07 00:18:01,474 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:18:01,475 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:18:01,476 INFO L82 PathProgramCache]: Analyzing trace with hash 723896290, now seen corresponding path program 1 times [2018-11-07 00:18:01,476 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:18:01,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:18:01,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:18:01,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:18:01,478 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:18:01,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:18:02,281 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:18:02,282 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:18:02,282 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:18:02,282 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 187 with the following transitions: [2018-11-07 00:18:02,285 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [37], [39], [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], [550], [551], [554], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 00:18:02,353 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:18:02,353 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:18:05,537 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:18:05,539 INFO L272 AbstractInterpreter]: Visited 93 different actions 179 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 00:18:05,550 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:18:05,550 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:18:07,776 INFO L227 lantSequenceWeakener]: Weakened 35 states. On average, predicates are now at 78.88% of their original sizes. [2018-11-07 00:18:07,778 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:18:39,867 INFO L415 sIntCurrentIteration]: We unified 185 AI predicates to 185 [2018-11-07 00:18:39,868 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:18:39,869 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:18:39,869 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [12] total 33 [2018-11-07 00:18:39,869 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:18:39,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-07 00:18:39,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-07 00:18:39,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2018-11-07 00:18:39,871 INFO L87 Difference]: Start difference. First operand 2202 states and 2925 transitions. Second operand 23 states. [2018-11-07 00:19:31,253 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:20:31,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:20:31,684 INFO L93 Difference]: Finished difference Result 5281 states and 6897 transitions. [2018-11-07 00:20:31,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-07 00:20:31,684 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 186 [2018-11-07 00:20:31,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:20:31,698 INFO L225 Difference]: With dead ends: 5281 [2018-11-07 00:20:31,699 INFO L226 Difference]: Without dead ends: 3085 [2018-11-07 00:20:31,709 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 199 GetRequests, 124 SyntacticMatches, 40 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 35.8s TimeCoverageRelationStatistics Valid=239, Invalid=1093, Unknown=0, NotChecked=0, Total=1332 [2018-11-07 00:20:31,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3085 states. [2018-11-07 00:20:31,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3085 to 3081. [2018-11-07 00:20:31,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3081 states. [2018-11-07 00:20:31,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3081 states to 3081 states and 3838 transitions. [2018-11-07 00:20:31,897 INFO L78 Accepts]: Start accepts. Automaton has 3081 states and 3838 transitions. Word has length 186 [2018-11-07 00:20:31,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:20:31,902 INFO L480 AbstractCegarLoop]: Abstraction has 3081 states and 3838 transitions. [2018-11-07 00:20:31,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-07 00:20:31,902 INFO L276 IsEmpty]: Start isEmpty. Operand 3081 states and 3838 transitions. [2018-11-07 00:20:31,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2018-11-07 00:20:31,910 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:20:31,911 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:20:31,911 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:20:31,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:20:31,912 INFO L82 PathProgramCache]: Analyzing trace with hash 138802724, now seen corresponding path program 1 times [2018-11-07 00:20:31,912 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:20:31,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:20:31,915 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:20:31,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:20:31,916 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:20:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:20:32,488 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 118 proven. 83 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-07 00:20:32,488 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:20:32,488 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:20:32,488 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 298 with the following transitions: [2018-11-07 00:20:32,490 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [37], [39], [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], [550], [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], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 00:20:32,502 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:20:32,503 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:20:40,767 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:20:40,767 INFO L272 AbstractInterpreter]: Visited 120 different actions 355 times. Merged at 7 different actions 17 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 00:20:40,775 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:20:40,775 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:20:43,323 INFO L227 lantSequenceWeakener]: Weakened 33 states. On average, predicates are now at 78.93% of their original sizes. [2018-11-07 00:20:43,323 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:21:23,275 INFO L415 sIntCurrentIteration]: We unified 296 AI predicates to 296 [2018-11-07 00:21:23,275 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:21:23,275 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:21:23,276 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [6] total 26 [2018-11-07 00:21:23,276 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:21:23,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-07 00:21:23,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-07 00:21:23,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2018-11-07 00:21:23,278 INFO L87 Difference]: Start difference. First operand 3081 states and 3838 transitions. Second operand 22 states. Received shutdown request... [2018-11-07 00:21:38,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 00:21:38,782 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 00:21:38,787 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 00:21:38,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:21:38 BoogieIcfgContainer [2018-11-07 00:21:38,788 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 00:21:38,788 INFO L168 Benchmark]: Toolchain (without parser) took 235249.84 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -725.5 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-11-07 00:21:38,790 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 00:21:38,791 INFO L168 Benchmark]: CACSL2BoogieTranslator took 806.14 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 00:21:38,792 INFO L168 Benchmark]: Boogie Procedure Inliner took 126.63 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 747.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -847.7 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2018-11-07 00:21:38,793 INFO L168 Benchmark]: Boogie Preprocessor took 110.57 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2018-11-07 00:21:38,793 INFO L168 Benchmark]: RCFGBuilder took 3716.78 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: 144.6 MB). Peak memory consumption was 144.6 MB. Max. memory is 7.1 GB. [2018-11-07 00:21:38,794 INFO L168 Benchmark]: TraceAbstraction took 230484.66 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.2 GB in the end (delta: -78.0 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-11-07 00:21:38,799 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 806.14 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 126.63 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 747.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -847.7 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.57 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3716.78 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: 144.6 MB). Peak memory consumption was 144.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230484.66 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.2 GB in the end (delta: -78.0 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: 34]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 34). Cancelled while BasicCegarLoop was constructing difference of abstraction (3081states) and FLOYD_HOARE automaton (currently 9 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (57 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 230.4s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 138.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 867 SDtfs, 5120 SDslu, 801 SDs, 0 SdLazy, 7755 SolverSat, 1215 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 56.5s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 531 GetRequests, 342 SyntacticMatches, 112 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 869 ImplicationChecksByTransitivity, 76.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3081occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 11.5s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9945652173913042 AbsIntWeakeningRatio, 0.12058212058212059 AbsIntAvgWeakeningVarsNumRemoved, 514.5031185031185 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 278 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 886 NumberOfCodeBlocks, 886 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 880 ConstructedInterpolants, 0 QuantifiedInterpolants, 1240694 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 332/417 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown