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_label47_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 01:36:43,511 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 01:36:43,513 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 01:36:43,536 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 01:36:43,536 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 01:36:43,538 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 01:36:43,539 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 01:36:43,541 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 01:36:43,543 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 01:36:43,550 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 01:36:43,551 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 01:36:43,552 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 01:36:43,553 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 01:36:43,557 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 01:36:43,558 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 01:36:43,559 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 01:36:43,559 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 01:36:43,564 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 01:36:43,567 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 01:36:43,570 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 01:36:43,571 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 01:36:43,572 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 01:36:43,574 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 01:36:43,581 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 01:36:43,602 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 01:36:43,602 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 01:36:43,603 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 01:36:43,603 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 01:36:43,603 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 01:36:43,604 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 01:36:43,604 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 01:36:43,604 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 01:36:43,604 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 01:36:43,605 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 01:36:43,605 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 01:36:43,606 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 01:36:43,606 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 01:36:43,607 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 01:36:43,608 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 01:36:43,608 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 01:36:43,609 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 01:36:43,609 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 01:36:43,609 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 01:36:43,609 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 01:36:43,610 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 01:36:43,611 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 01:36:43,611 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 01:36:43,611 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 01:36:43,612 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:36:43,612 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 01:36:43,612 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 01:36:43,612 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 01:36:43,613 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 01:36:43,613 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 01:36:43,613 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 01:36:43,614 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 01:36:43,614 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 01:36:43,614 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 01:36:43,689 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 01:36:43,703 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 01:36:43,707 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 01:36:43,708 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 01:36:43,709 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 01:36:43,710 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label47_true-unreach-call_false-termination.c [2018-10-24 01:36:43,771 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/aa26ec4a4/89f5902f7b274a629b6a24e7aa1832b8/FLAG228af4f1d [2018-10-24 01:36:44,391 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 01:36:44,392 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label47_true-unreach-call_false-termination.c [2018-10-24 01:36:44,410 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/aa26ec4a4/89f5902f7b274a629b6a24e7aa1832b8/FLAG228af4f1d [2018-10-24 01:36:44,429 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/aa26ec4a4/89f5902f7b274a629b6a24e7aa1832b8 [2018-10-24 01:36:44,442 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 01:36:44,443 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 01:36:44,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 01:36:44,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 01:36:44,448 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 01:36:44,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:36:44" (1/1) ... [2018-10-24 01:36:44,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@449de3c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:36:44, skipping insertion in model container [2018-10-24 01:36:44,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:36:44" (1/1) ... [2018-10-24 01:36:44,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 01:36:44,526 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 01:36:45,066 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:36:45,074 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 01:36:45,205 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:36:45,223 INFO L193 MainTranslator]: Completed translation [2018-10-24 01:36:45,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:36:45 WrapperNode [2018-10-24 01:36:45,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 01:36:45,225 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 01:36:45,225 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 01:36:45,225 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 01:36:45,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:36:45" (1/1) ... [2018-10-24 01:36:45,259 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:36:45" (1/1) ... [2018-10-24 01:36:45,446 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 01:36:45,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 01:36:45,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 01:36:45,447 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 01:36:45,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:36:45" (1/1) ... [2018-10-24 01:36:45,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:36:45" (1/1) ... [2018-10-24 01:36:45,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:36:45" (1/1) ... [2018-10-24 01:36:45,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:36:45" (1/1) ... [2018-10-24 01:36:45,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:36:45" (1/1) ... [2018-10-24 01:36:45,532 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:36:45" (1/1) ... [2018-10-24 01:36:45,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:36:45" (1/1) ... [2018-10-24 01:36:45,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 01:36:45,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 01:36:45,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 01:36:45,556 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 01:36:45,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:36:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:36:45,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 01:36:45,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 01:36:45,628 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 01:36:45,628 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 01:36:45,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 01:36:45,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 01:36:45,629 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 01:36:45,629 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 01:36:49,059 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 01:36:49,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:36:49 BoogieIcfgContainer [2018-10-24 01:36:49,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 01:36:49,062 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 01:36:49,063 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 01:36:49,066 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 01:36:49,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:36:44" (1/3) ... [2018-10-24 01:36:49,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c5ebfa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:36:49, skipping insertion in model container [2018-10-24 01:36:49,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:36:45" (2/3) ... [2018-10-24 01:36:49,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c5ebfa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:36:49, skipping insertion in model container [2018-10-24 01:36:49,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:36:49" (3/3) ... [2018-10-24 01:36:49,070 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label47_true-unreach-call_false-termination.c [2018-10-24 01:36:49,079 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 01:36:49,087 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 01:36:49,106 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 01:36:49,146 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 01:36:49,146 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 01:36:49,146 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 01:36:49,147 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 01:36:49,147 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 01:36:49,147 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 01:36:49,147 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 01:36:49,147 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 01:36:49,176 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-24 01:36:49,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-24 01:36:49,185 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:36:49,187 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:36:49,190 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:36:49,196 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:36:49,197 INFO L82 PathProgramCache]: Analyzing trace with hash -312611828, now seen corresponding path program 1 times [2018-10-24 01:36:49,199 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:36:49,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:36:49,246 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:36:49,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:36:49,247 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:36:49,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:36:49,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:36:49,607 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:36:49,607 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 01:36:49,608 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:36:49,614 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 01:36:49,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 01:36:49,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 01:36:49,636 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-24 01:36:51,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:36:51,617 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-24 01:36:51,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 01:36:51,620 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2018-10-24 01:36:51,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:36:51,641 INFO L225 Difference]: With dead ends: 691 [2018-10-24 01:36:51,641 INFO L226 Difference]: Without dead ends: 434 [2018-10-24 01:36:51,650 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 01:36:51,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-24 01:36:51,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-24 01:36:51,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-24 01:36:51,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-10-24 01:36:51,750 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 40 [2018-10-24 01:36:51,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:36:51,751 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-10-24 01:36:51,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 01:36:51,751 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-10-24 01:36:51,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-24 01:36:51,759 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:36:51,759 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:36:51,760 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:36:51,760 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:36:51,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1306869335, now seen corresponding path program 1 times [2018-10-24 01:36:51,760 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:36:51,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:36:51,762 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:36:51,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:36:51,762 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:36:51,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:36:52,185 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:36:52,185 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:36:52,186 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:36:52,186 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:36:52,188 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:36:52,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:36:52,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:36:52,189 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-10-24 01:36:54,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:36:54,248 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-10-24 01:36:54,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:36:54,249 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2018-10-24 01:36:54,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:36:54,255 INFO L225 Difference]: With dead ends: 1062 [2018-10-24 01:36:54,256 INFO L226 Difference]: Without dead ends: 634 [2018-10-24 01:36:54,258 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 01:36:54,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-10-24 01:36:54,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-10-24 01:36:54,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-10-24 01:36:54,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-10-24 01:36:54,307 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 127 [2018-10-24 01:36:54,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:36:54,308 INFO L481 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-10-24 01:36:54,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:36:54,308 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-10-24 01:36:54,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-24 01:36:54,312 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:36:54,312 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:36:54,313 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:36:54,313 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:36:54,313 INFO L82 PathProgramCache]: Analyzing trace with hash -327251684, now seen corresponding path program 1 times [2018-10-24 01:36:54,313 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:36:54,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:36:54,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:36:54,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:36:54,315 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:36:54,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:36:54,522 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:36:54,523 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:36:54,523 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 01:36:54,524 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:36:54,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 01:36:54,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 01:36:54,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:36:54,526 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 4 states. [2018-10-24 01:37:00,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:37:00,437 INFO L93 Difference]: Finished difference Result 2352 states and 4016 transitions. [2018-10-24 01:37:00,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 01:37:00,442 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2018-10-24 01:37:00,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:37:00,459 INFO L225 Difference]: With dead ends: 2352 [2018-10-24 01:37:00,460 INFO L226 Difference]: Without dead ends: 1733 [2018-10-24 01:37:00,466 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:37:00,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1733 states. [2018-10-24 01:37:00,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1733 to 1733. [2018-10-24 01:37:00,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1733 states. [2018-10-24 01:37:00,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2647 transitions. [2018-10-24 01:37:00,547 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2647 transitions. Word has length 136 [2018-10-24 01:37:00,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:37:00,548 INFO L481 AbstractCegarLoop]: Abstraction has 1733 states and 2647 transitions. [2018-10-24 01:37:00,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 01:37:00,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2647 transitions. [2018-10-24 01:37:00,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-10-24 01:37:00,560 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:37:00,560 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 01:37:00,560 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:37:00,561 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:37:00,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1546477901, now seen corresponding path program 1 times [2018-10-24 01:37:00,561 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:37:00,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:37:00,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:37:00,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:37:00,563 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:37:00,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:37:00,939 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-10-24 01:37:01,093 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 14 [2018-10-24 01:37:01,209 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 66 proven. 107 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 01:37:01,209 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:37:01,209 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:37:01,210 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 266 with the following transitions: [2018-10-24 01:37:01,212 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [221], [223], [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], [662], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 01:37:01,278 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:37:01,278 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:37:04,186 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:37:05,461 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:37:05,463 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 01:37:05,506 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:37:05,507 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:37:08,726 INFO L232 lantSequenceWeakener]: Weakened 257 states. On average, predicates are now at 77.74% of their original sizes. [2018-10-24 01:37:08,726 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:37:09,173 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:37:09,174 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:37:09,174 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-10-24 01:37:09,174 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:37:09,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 01:37:09,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 01:37:09,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 01:37:09,176 INFO L87 Difference]: Start difference. First operand 1733 states and 2647 transitions. Second operand 7 states. [2018-10-24 01:37:37,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:37:37,835 INFO L93 Difference]: Finished difference Result 3645 states and 5568 transitions. [2018-10-24 01:37:37,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:37:37,836 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 265 [2018-10-24 01:37:37,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:37:37,848 INFO L225 Difference]: With dead ends: 3645 [2018-10-24 01:37:37,848 INFO L226 Difference]: Without dead ends: 1918 [2018-10-24 01:37:37,856 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 265 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 01:37:37,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1918 states. [2018-10-24 01:37:37,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1918 to 1916. [2018-10-24 01:37:37,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1916 states. [2018-10-24 01:37:37,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2838 transitions. [2018-10-24 01:37:37,910 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2838 transitions. Word has length 265 [2018-10-24 01:37:37,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:37:37,911 INFO L481 AbstractCegarLoop]: Abstraction has 1916 states and 2838 transitions. [2018-10-24 01:37:37,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 01:37:37,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2838 transitions. [2018-10-24 01:37:37,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-10-24 01:37:37,923 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:37:37,924 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:37:37,924 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:37:37,925 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:37:37,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1842205852, now seen corresponding path program 1 times [2018-10-24 01:37:37,925 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:37:37,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:37:37,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:37:37,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:37:37,927 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:37:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:37:38,436 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 01:37:38,649 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 01:37:39,420 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 187 proven. 189 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 01:37:39,420 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:37:39,420 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:37:39,420 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 351 with the following transitions: [2018-10-24 01:37:39,421 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [221], [223], [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], [662], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 01:37:39,431 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:37:39,431 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:37:41,899 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:37:44,968 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:37:44,968 INFO L272 AbstractInterpreter]: Visited 122 different actions 237 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 01:37:44,976 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:37:44,976 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:37:48,642 INFO L232 lantSequenceWeakener]: Weakened 170 states. On average, predicates are now at 78.15% of their original sizes. [2018-10-24 01:37:48,643 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:38:11,873 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:38:11,874 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:38:11,874 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [12] total 31 [2018-10-24 01:38:11,874 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:38:11,875 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-24 01:38:11,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-24 01:38:11,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2018-10-24 01:38:11,876 INFO L87 Difference]: Start difference. First operand 1916 states and 2838 transitions. Second operand 21 states. Received shutdown request... [2018-10-24 01:40:49,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-24 01:40:49,547 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 01:40:49,552 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 01:40:49,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:40:49 BoogieIcfgContainer [2018-10-24 01:40:49,552 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 01:40:49,553 INFO L168 Benchmark]: Toolchain (without parser) took 245110.75 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 3.3 GB in the end (delta: -1.9 GB). Peak memory consumption was 735.4 MB. Max. memory is 7.1 GB. [2018-10-24 01:40:49,554 INFO L168 Benchmark]: CDTParser took 0.19 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. [2018-10-24 01:40:49,555 INFO L168 Benchmark]: CACSL2BoogieTranslator took 779.82 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. [2018-10-24 01:40:49,555 INFO L168 Benchmark]: Boogie Procedure Inliner took 221.62 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -845.0 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-24 01:40:49,556 INFO L168 Benchmark]: Boogie Preprocessor took 108.75 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: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2018-10-24 01:40:49,557 INFO L168 Benchmark]: RCFGBuilder took 3504.72 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: 142.7 MB). Peak memory consumption was 142.7 MB. Max. memory is 7.1 GB. [2018-10-24 01:40:49,558 INFO L168 Benchmark]: TraceAbstraction took 240489.94 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 3.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 628.8 MB. Max. memory is 7.1 GB. [2018-10-24 01:40:49,564 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 779.82 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 221.62 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -845.0 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.75 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: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3504.72 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: 142.7 MB). Peak memory consumption was 142.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 240489.94 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 3.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 628.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 103). Cancelled while BasicCegarLoop was constructing difference of abstraction (1916states) and FLOYD_HOARE automaton (currently 24 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (2185 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 240.4s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 196.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 725 SDtfs, 4092 SDslu, 801 SDs, 0 SdLazy, 6123 SolverSat, 1145 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 78.2s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 641 GetRequests, 576 SyntacticMatches, 23 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 25.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1916occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 9.8s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9960133106366881 AbsIntWeakeningRatio, 0.09461663947797716 AbsIntAvgWeakeningVarsNumRemoved, 623.2381729200653 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 918 NumberOfCodeBlocks, 918 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 913 ConstructedInterpolants, 0 QuantifiedInterpolants, 2297920 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 329/625 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown