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_label37_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 23:55:46,649 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 23:55:46,651 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 23:55:46,663 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 23:55:46,664 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 23:55:46,665 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 23:55:46,667 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 23:55:46,668 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 23:55:46,670 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 23:55:46,671 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 23:55:46,672 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 23:55:46,672 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 23:55:46,673 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 23:55:46,674 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 23:55:46,675 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 23:55:46,676 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 23:55:46,677 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 23:55:46,680 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 23:55:46,682 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 23:55:46,687 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 23:55:46,691 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 23:55:46,692 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 23:55:46,700 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-26 23:55:46,708 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 [2018-10-26 23:55:46,729 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 23:55:46,729 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 23:55:46,730 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 23:55:46,730 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 23:55:46,731 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 23:55:46,731 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 23:55:46,731 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 23:55:46,731 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 23:55:46,731 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-26 23:55:46,731 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 23:55:46,732 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 23:55:46,733 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 23:55:46,733 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 23:55:46,733 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 23:55:46,734 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 23:55:46,734 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 23:55:46,734 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 23:55:46,734 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 23:55:46,734 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 23:55:46,735 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 23:55:46,736 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 23:55:46,736 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 23:55:46,737 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 23:55:46,737 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 23:55:46,737 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:55:46,737 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 23:55:46,737 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 23:55:46,738 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 23:55:46,738 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 23:55:46,738 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 23:55:46,738 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 23:55:46,739 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 23:55:46,739 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 23:55:46,739 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-26 23:55:46,803 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 23:55:46,819 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 23:55:46,823 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 23:55:46,825 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 23:55:46,825 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 23:55:46,826 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label37_false-unreach-call_false-termination.c [2018-10-26 23:55:46,888 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/684dcd858/6672e1015f194dbeab537f9eca3fa25a/FLAG3242e3ce7 [2018-10-26 23:55:47,447 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 23:55:47,448 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label37_false-unreach-call_false-termination.c [2018-10-26 23:55:47,481 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/684dcd858/6672e1015f194dbeab537f9eca3fa25a/FLAG3242e3ce7 [2018-10-26 23:55:47,508 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/684dcd858/6672e1015f194dbeab537f9eca3fa25a [2018-10-26 23:55:47,521 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 23:55:47,523 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 23:55:47,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 23:55:47,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 23:55:47,532 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 23:55:47,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:55:47" (1/1) ... [2018-10-26 23:55:47,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28a8effd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:55:47, skipping insertion in model container [2018-10-26 23:55:47,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:55:47" (1/1) ... [2018-10-26 23:55:47,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 23:55:47,623 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 23:55:48,177 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:55:48,186 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 23:55:48,364 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:55:48,386 INFO L193 MainTranslator]: Completed translation [2018-10-26 23:55:48,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:55:48 WrapperNode [2018-10-26 23:55:48,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 23:55:48,387 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 23:55:48,387 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 23:55:48,388 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 23:55:48,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:55:48" (1/1) ... [2018-10-26 23:55:48,422 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:55:48" (1/1) ... [2018-10-26 23:55:48,597 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 23:55:48,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 23:55:48,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 23:55:48,598 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 23:55:48,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:55:48" (1/1) ... [2018-10-26 23:55:48,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:55:48" (1/1) ... [2018-10-26 23:55:48,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:55:48" (1/1) ... [2018-10-26 23:55:48,624 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:55:48" (1/1) ... [2018-10-26 23:55:48,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:55:48" (1/1) ... [2018-10-26 23:55:48,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:55:48" (1/1) ... [2018-10-26 23:55:48,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:55:48" (1/1) ... [2018-10-26 23:55:48,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 23:55:48,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 23:55:48,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 23:55:48,719 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 23:55:48,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:55:48" (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 [2018-10-26 23:55:48,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 23:55:48,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 23:55:48,790 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-26 23:55:48,790 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-26 23:55:48,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 23:55:48,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 23:55:48,791 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 23:55:48,791 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 23:55:52,157 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 23:55:52,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:55:52 BoogieIcfgContainer [2018-10-26 23:55:52,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 23:55:52,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 23:55:52,160 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 23:55:52,164 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 23:55:52,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:55:47" (1/3) ... [2018-10-26 23:55:52,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55525b26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:55:52, skipping insertion in model container [2018-10-26 23:55:52,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:55:48" (2/3) ... [2018-10-26 23:55:52,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55525b26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:55:52, skipping insertion in model container [2018-10-26 23:55:52,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:55:52" (3/3) ... [2018-10-26 23:55:52,171 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label37_false-unreach-call_false-termination.c [2018-10-26 23:55:52,181 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 23:55:52,189 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 23:55:52,207 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 23:55:52,246 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 23:55:52,247 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 23:55:52,247 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 23:55:52,247 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 23:55:52,247 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 23:55:52,248 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 23:55:52,248 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 23:55:52,248 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 23:55:52,275 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-26 23:55:52,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-26 23:55:52,283 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:55:52,284 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] [2018-10-26 23:55:52,290 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:55:52,296 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:55:52,297 INFO L82 PathProgramCache]: Analyzing trace with hash -693884199, now seen corresponding path program 1 times [2018-10-26 23:55:52,299 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:55:52,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:55:52,349 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:55:52,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:55:52,350 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:55:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:55:52,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:55:52,670 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:55:52,670 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 23:55:52,670 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:55:52,676 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 23:55:52,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 23:55:52,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:55:52,696 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-26 23:55:54,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:55:54,455 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-26 23:55:54,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 23:55:54,458 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2018-10-26 23:55:54,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:55:54,477 INFO L225 Difference]: With dead ends: 691 [2018-10-26 23:55:54,478 INFO L226 Difference]: Without dead ends: 434 [2018-10-26 23:55:54,486 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 [2018-10-26 23:55:54,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-26 23:55:54,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-26 23:55:54,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-26 23:55:54,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-10-26 23:55:54,569 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 25 [2018-10-26 23:55:54,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:55:54,569 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-10-26 23:55:54,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 23:55:54,570 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-10-26 23:55:54,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-26 23:55:54,575 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:55:54,575 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:55:54,575 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:55:54,576 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:55:54,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1401111305, now seen corresponding path program 1 times [2018-10-26 23:55:54,576 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:55:54,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:55:54,578 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:55:54,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:55:54,578 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:55:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:55:54,888 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:55:54,889 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:55:54,889 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 23:55:54,889 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:55:54,891 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:55:54,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:55:54,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:55:54,892 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-10-26 23:55:57,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:55:57,007 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-10-26 23:55:57,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:55:57,010 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2018-10-26 23:55:57,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:55:57,016 INFO L225 Difference]: With dead ends: 1062 [2018-10-26 23:55:57,017 INFO L226 Difference]: Without dead ends: 634 [2018-10-26 23:55:57,019 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 [2018-10-26 23:55:57,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-10-26 23:55:57,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-10-26 23:55:57,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-10-26 23:55:57,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-10-26 23:55:57,062 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 100 [2018-10-26 23:55:57,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:55:57,063 INFO L481 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-10-26 23:55:57,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:55:57,064 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-10-26 23:55:57,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-26 23:55:57,066 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:55:57,067 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:55:57,067 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:55:57,067 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:55:57,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1715582128, now seen corresponding path program 1 times [2018-10-26 23:55:57,068 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:55:57,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:55:57,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:55:57,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:55:57,069 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:55:57,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:55:57,271 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:55:57,271 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:55:57,271 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 23:55:57,272 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:55:57,272 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 23:55:57,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 23:55:57,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:55:57,273 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 4 states. [2018-10-26 23:56:01,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:56:01,377 INFO L93 Difference]: Finished difference Result 2350 states and 4011 transitions. [2018-10-26 23:56:01,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 23:56:01,384 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 109 [2018-10-26 23:56:01,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:56:01,401 INFO L225 Difference]: With dead ends: 2350 [2018-10-26 23:56:01,401 INFO L226 Difference]: Without dead ends: 1731 [2018-10-26 23:56:01,407 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 [2018-10-26 23:56:01,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2018-10-26 23:56:01,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2018-10-26 23:56:01,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2018-10-26 23:56:01,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2640 transitions. [2018-10-26 23:56:01,482 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2640 transitions. Word has length 109 [2018-10-26 23:56:01,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:56:01,482 INFO L481 AbstractCegarLoop]: Abstraction has 1731 states and 2640 transitions. [2018-10-26 23:56:01,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 23:56:01,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2640 transitions. [2018-10-26 23:56:01,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-10-26 23:56:01,498 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:56:01,499 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:56:01,500 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:56:01,500 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:56:01,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1253393881, now seen corresponding path program 1 times [2018-10-26 23:56:01,501 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:56:01,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:56:01,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:56:01,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:56:01,502 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:56:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:56:01,891 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-10-26 23:56:01,891 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:56:01,892 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 23:56:01,892 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:56:01,893 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 23:56:01,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 23:56:01,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:56:01,893 INFO L87 Difference]: Start difference. First operand 1731 states and 2640 transitions. Second operand 4 states. [2018-10-26 23:56:04,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:56:04,927 INFO L93 Difference]: Finished difference Result 6215 states and 9785 transitions. [2018-10-26 23:56:04,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 23:56:04,928 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 219 [2018-10-26 23:56:04,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:56:04,974 INFO L225 Difference]: With dead ends: 6215 [2018-10-26 23:56:04,974 INFO L226 Difference]: Without dead ends: 4490 [2018-10-26 23:56:05,002 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:56:05,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4490 states. [2018-10-26 23:56:05,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4490 to 4490. [2018-10-26 23:56:05,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4490 states. [2018-10-26 23:56:05,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 6614 transitions. [2018-10-26 23:56:05,187 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 6614 transitions. Word has length 219 [2018-10-26 23:56:05,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:56:05,188 INFO L481 AbstractCegarLoop]: Abstraction has 4490 states and 6614 transitions. [2018-10-26 23:56:05,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 23:56:05,188 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 6614 transitions. [2018-10-26 23:56:05,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-10-26 23:56:05,211 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:56:05,211 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 23:56:05,211 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:56:05,211 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:56:05,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1012778421, now seen corresponding path program 1 times [2018-10-26 23:56:05,212 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:56:05,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:56:05,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:56:05,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:56:05,213 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:56:05,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:56:05,912 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 36 proven. 108 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-26 23:56:05,912 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:56:05,913 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:56:05,914 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 282 with the following transitions: [2018-10-26 23:56:05,916 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [101], [103], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [786], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-26 23:56:05,991 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:56:05,992 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:56:08,848 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-26 23:56:12,876 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 23:56:12,877 INFO L272 AbstractInterpreter]: Visited 148 different actions 148 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-26 23:56:12,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:56:12,911 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 23:56:15,843 INFO L227 lantSequenceWeakener]: Weakened 273 states. On average, predicates are now at 77.46% of their original sizes. [2018-10-26 23:56:15,844 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 23:56:16,357 INFO L415 sIntCurrentIteration]: We unified 280 AI predicates to 280 [2018-10-26 23:56:16,357 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 23:56:16,358 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:56:16,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-10-26 23:56:16,359 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:56:16,360 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 23:56:16,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 23:56:16,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-26 23:56:16,360 INFO L87 Difference]: Start difference. First operand 4490 states and 6614 transitions. Second operand 7 states. [2018-10-26 23:56:43,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:56:43,800 INFO L93 Difference]: Finished difference Result 9159 states and 13470 transitions. [2018-10-26 23:56:43,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:56:43,800 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 281 [2018-10-26 23:56:43,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:56:43,832 INFO L225 Difference]: With dead ends: 9159 [2018-10-26 23:56:43,833 INFO L226 Difference]: Without dead ends: 4675 [2018-10-26 23:56:43,864 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 281 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-26 23:56:43,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4675 states. [2018-10-26 23:56:43,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4675 to 4673. [2018-10-26 23:56:43,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4673 states. [2018-10-26 23:56:44,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4673 states to 4673 states and 6805 transitions. [2018-10-26 23:56:44,019 INFO L78 Accepts]: Start accepts. Automaton has 4673 states and 6805 transitions. Word has length 281 [2018-10-26 23:56:44,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:56:44,020 INFO L481 AbstractCegarLoop]: Abstraction has 4673 states and 6805 transitions. [2018-10-26 23:56:44,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 23:56:44,020 INFO L276 IsEmpty]: Start isEmpty. Operand 4673 states and 6805 transitions. [2018-10-26 23:56:44,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-10-26 23:56:44,044 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:56:44,044 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:56:44,045 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:56:44,045 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:56:44,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1149584761, now seen corresponding path program 1 times [2018-10-26 23:56:44,046 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:56:44,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:56:44,047 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:56:44,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:56:44,047 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:56:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:56:45,030 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 142 proven. 190 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-26 23:56:45,037 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:56:45,037 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:56:45,037 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 367 with the following transitions: [2018-10-26 23:56:45,038 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [101], [103], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [786], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-26 23:56:45,051 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:56:45,051 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:56:46,940 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-26 23:56:52,179 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 23:56:52,180 INFO L272 AbstractInterpreter]: Visited 152 different actions 297 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-26 23:56:52,203 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:56:52,203 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 23:56:54,951 INFO L227 lantSequenceWeakener]: Weakened 186 states. On average, predicates are now at 77.71% of their original sizes. [2018-10-26 23:56:54,952 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 23:57:16,539 INFO L415 sIntCurrentIteration]: We unified 365 AI predicates to 365 [2018-10-26 23:57:16,539 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 23:57:16,539 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:57:16,539 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [12] total 30 [2018-10-26 23:57:16,540 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:57:16,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-26 23:57:16,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-26 23:57:16,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2018-10-26 23:57:16,541 INFO L87 Difference]: Start difference. First operand 4673 states and 6805 transitions. Second operand 20 states. Received shutdown request... [2018-10-26 23:59:51,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-26 23:59:51,188 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 23:59:51,194 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 23:59:51,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 11:59:51 BoogieIcfgContainer [2018-10-26 23:59:51,194 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 23:59:51,195 INFO L168 Benchmark]: Toolchain (without parser) took 243673.86 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-26 23:59:51,197 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 23:59:51,198 INFO L168 Benchmark]: CACSL2BoogieTranslator took 863.11 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. [2018-10-26 23:59:51,199 INFO L168 Benchmark]: Boogie Procedure Inliner took 210.13 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -850.2 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-26 23:59:51,200 INFO L168 Benchmark]: Boogie Preprocessor took 121.15 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: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2018-10-26 23:59:51,200 INFO L168 Benchmark]: RCFGBuilder took 3439.53 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: 115.4 MB). Peak memory consumption was 115.4 MB. Max. memory is 7.1 GB. [2018-10-26 23:59:51,201 INFO L168 Benchmark]: TraceAbstraction took 239034.86 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 2.7 GB in the end (delta: -611.2 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-26 23:59:51,207 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 863.11 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 210.13 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -850.2 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.15 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: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3439.53 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: 115.4 MB). Peak memory consumption was 115.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 239034.86 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 2.7 GB in the end (delta: -611.2 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 58). Cancelled while BasicCegarLoop was constructing difference of abstraction (4673states) and FLOYD_HOARE automaton (currently 23 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (3754 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 238.9s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 193.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 918 SDtfs, 4305 SDslu, 865 SDs, 0 SdLazy, 7113 SolverSat, 1369 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 84.4s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 678 GetRequests, 612 SyntacticMatches, 23 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 24.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4673occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 14.1s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9962110998764182 AbsIntWeakeningRatio, 0.08992248062015504 AbsIntAvgWeakeningVarsNumRemoved, 657.0496124031008 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 1100 NumberOfCodeBlocks, 1100 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1094 ConstructedInterpolants, 0 QuantifiedInterpolants, 2433307 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 341/639 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown