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_label04_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 01:32:10,670 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 01:32:10,672 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 01:32:10,687 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 01:32:10,688 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 01:32:10,689 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 01:32:10,690 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 01:32:10,692 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 01:32:10,693 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 01:32:10,694 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 01:32:10,695 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 01:32:10,695 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 01:32:10,696 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 01:32:10,697 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 01:32:10,699 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 01:32:10,699 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 01:32:10,700 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 01:32:10,702 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 01:32:10,704 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 01:32:10,706 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 01:32:10,707 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 01:32:10,708 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 01:32:10,710 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 01:32:10,719 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 01:32:10,745 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 01:32:10,746 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 01:32:10,746 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 01:32:10,747 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 01:32:10,747 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 01:32:10,747 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 01:32:10,747 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 01:32:10,748 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 01:32:10,748 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 01:32:10,748 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 01:32:10,748 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 01:32:10,748 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 01:32:10,749 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 01:32:10,749 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 01:32:10,749 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 01:32:10,751 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 01:32:10,751 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 01:32:10,751 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 01:32:10,751 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 01:32:10,751 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 01:32:10,752 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 01:32:10,752 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 01:32:10,752 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 01:32:10,752 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 01:32:10,752 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:32:10,753 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 01:32:10,753 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 01:32:10,753 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 01:32:10,753 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 01:32:10,753 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 01:32:10,754 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 01:32:10,754 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 01:32:10,754 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 01:32:10,754 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 01:32:10,802 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 01:32:10,817 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 01:32:10,822 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 01:32:10,823 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 01:32:10,824 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 01:32:10,825 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label04_true-unreach-call_false-termination.c [2018-10-24 01:32:10,889 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9a6ea0749/5ae2f2b7aa884ce48434e9d5e7d6f9d5/FLAG635cc218e [2018-10-24 01:32:11,480 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 01:32:11,483 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label04_true-unreach-call_false-termination.c [2018-10-24 01:32:11,502 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9a6ea0749/5ae2f2b7aa884ce48434e9d5e7d6f9d5/FLAG635cc218e [2018-10-24 01:32:11,524 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9a6ea0749/5ae2f2b7aa884ce48434e9d5e7d6f9d5 [2018-10-24 01:32:11,536 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 01:32:11,538 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 01:32:11,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 01:32:11,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 01:32:11,545 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 01:32:11,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:32:11" (1/1) ... [2018-10-24 01:32:11,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47e393ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:32:11, skipping insertion in model container [2018-10-24 01:32:11,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:32:11" (1/1) ... [2018-10-24 01:32:11,561 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 01:32:11,631 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 01:32:12,173 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:32:12,178 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 01:32:12,317 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:32:12,336 INFO L193 MainTranslator]: Completed translation [2018-10-24 01:32:12,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:32:12 WrapperNode [2018-10-24 01:32:12,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 01:32:12,337 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 01:32:12,338 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 01:32:12,338 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 01:32:12,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:32:12" (1/1) ... [2018-10-24 01:32:12,380 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:32:12" (1/1) ... [2018-10-24 01:32:12,576 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 01:32:12,577 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 01:32:12,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 01:32:12,577 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 01:32:12,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:32:12" (1/1) ... [2018-10-24 01:32:12,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:32:12" (1/1) ... [2018-10-24 01:32:12,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:32:12" (1/1) ... [2018-10-24 01:32:12,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:32:12" (1/1) ... [2018-10-24 01:32:12,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:32:12" (1/1) ... [2018-10-24 01:32:12,672 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:32:12" (1/1) ... [2018-10-24 01:32:12,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:32:12" (1/1) ... [2018-10-24 01:32:12,696 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 01:32:12,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 01:32:12,697 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 01:32:12,697 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 01:32:12,698 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:32:12" (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 01:32:12,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 01:32:12,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 01:32:12,766 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 01:32:12,766 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 01:32:12,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 01:32:12,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 01:32:12,767 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 01:32:12,767 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 01:32:16,268 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 01:32:16,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:32:16 BoogieIcfgContainer [2018-10-24 01:32:16,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 01:32:16,270 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 01:32:16,271 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 01:32:16,276 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 01:32:16,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:32:11" (1/3) ... [2018-10-24 01:32:16,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2886af30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:32:16, skipping insertion in model container [2018-10-24 01:32:16,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:32:12" (2/3) ... [2018-10-24 01:32:16,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2886af30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:32:16, skipping insertion in model container [2018-10-24 01:32:16,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:32:16" (3/3) ... [2018-10-24 01:32:16,280 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label04_true-unreach-call_false-termination.c [2018-10-24 01:32:16,292 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 01:32:16,301 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 01:32:16,320 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 01:32:16,359 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 01:32:16,359 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 01:32:16,359 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 01:32:16,359 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 01:32:16,360 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 01:32:16,360 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 01:32:16,360 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 01:32:16,360 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 01:32:16,393 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-24 01:32:16,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-24 01:32:16,403 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:32:16,404 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:32:16,407 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:32:16,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:32:16,413 INFO L82 PathProgramCache]: Analyzing trace with hash -670280511, now seen corresponding path program 1 times [2018-10-24 01:32:16,416 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:32:16,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:32:16,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:32:16,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:32:16,470 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:32:16,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:32:16,919 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:32:17,034 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 01:32:17,036 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:32:17,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 01:32:17,037 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:32:17,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 01:32:17,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 01:32:17,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 01:32:17,066 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-24 01:32:19,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:32:19,084 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-24 01:32:19,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 01:32:19,088 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2018-10-24 01:32:19,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:32:19,111 INFO L225 Difference]: With dead ends: 691 [2018-10-24 01:32:19,114 INFO L226 Difference]: Without dead ends: 434 [2018-10-24 01:32:19,124 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 01:32:19,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-24 01:32:19,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-24 01:32:19,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-24 01:32:19,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-10-24 01:32:19,215 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 59 [2018-10-24 01:32:19,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:32:19,215 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-10-24 01:32:19,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 01:32:19,216 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-10-24 01:32:19,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-24 01:32:19,224 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:32:19,224 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 01:32:19,225 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:32:19,225 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:32:19,225 INFO L82 PathProgramCache]: Analyzing trace with hash 2036233980, now seen corresponding path program 1 times [2018-10-24 01:32:19,226 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:32:19,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:32:19,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:32:19,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:32:19,228 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:32:19,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:32:19,571 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:32:19,572 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:32:19,572 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:32:19,572 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:32:19,574 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:32:19,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:32:19,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:32:19,575 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-10-24 01:32:23,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:32:23,435 INFO L93 Difference]: Finished difference Result 1588 states and 2935 transitions. [2018-10-24 01:32:23,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:32:23,436 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2018-10-24 01:32:23,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:32:23,446 INFO L225 Difference]: With dead ends: 1588 [2018-10-24 01:32:23,446 INFO L226 Difference]: Without dead ends: 1160 [2018-10-24 01:32:23,450 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 01:32:23,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2018-10-24 01:32:23,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1153. [2018-10-24 01:32:23,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1153 states. [2018-10-24 01:32:23,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1887 transitions. [2018-10-24 01:32:23,526 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1887 transitions. Word has length 129 [2018-10-24 01:32:23,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:32:23,527 INFO L481 AbstractCegarLoop]: Abstraction has 1153 states and 1887 transitions. [2018-10-24 01:32:23,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:32:23,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1887 transitions. [2018-10-24 01:32:23,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-24 01:32:23,531 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:32:23,532 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:32:23,532 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:32:23,532 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:32:23,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1284385993, now seen corresponding path program 1 times [2018-10-24 01:32:23,533 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:32:23,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:32:23,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:32:23,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:32:23,534 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:32:23,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:32:23,666 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:32:23,667 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:32:23,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 01:32:23,667 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:32:23,668 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 01:32:23,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 01:32:23,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 01:32:23,669 INFO L87 Difference]: Start difference. First operand 1153 states and 1887 transitions. Second operand 5 states. [2018-10-24 01:32:26,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:32:26,339 INFO L93 Difference]: Finished difference Result 2716 states and 4601 transitions. [2018-10-24 01:32:26,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:32:26,343 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2018-10-24 01:32:26,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:32:26,361 INFO L225 Difference]: With dead ends: 2716 [2018-10-24 01:32:26,361 INFO L226 Difference]: Without dead ends: 1569 [2018-10-24 01:32:26,369 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 01:32:26,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2018-10-24 01:32:26,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1538. [2018-10-24 01:32:26,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1538 states. [2018-10-24 01:32:26,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 2356 transitions. [2018-10-24 01:32:26,444 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 2356 transitions. Word has length 130 [2018-10-24 01:32:26,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:32:26,445 INFO L481 AbstractCegarLoop]: Abstraction has 1538 states and 2356 transitions. [2018-10-24 01:32:26,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 01:32:26,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 2356 transitions. [2018-10-24 01:32:26,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-24 01:32:26,447 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:32:26,448 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 01:32:26,448 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:32:26,448 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:32:26,448 INFO L82 PathProgramCache]: Analyzing trace with hash 516676699, now seen corresponding path program 1 times [2018-10-24 01:32:26,448 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:32:26,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:32:26,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:32:26,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:32:26,451 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:32:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:32:26,611 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:32:26,611 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:32:26,611 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 01:32:26,612 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:32:26,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 01:32:26,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 01:32:26,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 01:32:26,613 INFO L87 Difference]: Start difference. First operand 1538 states and 2356 transitions. Second operand 5 states. [2018-10-24 01:32:29,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:32:29,444 INFO L93 Difference]: Finished difference Result 4906 states and 7504 transitions. [2018-10-24 01:32:29,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 01:32:29,446 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2018-10-24 01:32:29,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:32:29,470 INFO L225 Difference]: With dead ends: 4906 [2018-10-24 01:32:29,470 INFO L226 Difference]: Without dead ends: 3374 [2018-10-24 01:32:29,484 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 01:32:29,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3374 states. [2018-10-24 01:32:29,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3374 to 3263. [2018-10-24 01:32:29,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3263 states. [2018-10-24 01:32:29,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3263 states to 3263 states and 4437 transitions. [2018-10-24 01:32:29,583 INFO L78 Accepts]: Start accepts. Automaton has 3263 states and 4437 transitions. Word has length 132 [2018-10-24 01:32:29,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:32:29,584 INFO L481 AbstractCegarLoop]: Abstraction has 3263 states and 4437 transitions. [2018-10-24 01:32:29,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 01:32:29,584 INFO L276 IsEmpty]: Start isEmpty. Operand 3263 states and 4437 transitions. [2018-10-24 01:32:29,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-10-24 01:32:29,590 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:32:29,591 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:32:29,591 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:32:29,591 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:32:29,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1486188283, now seen corresponding path program 1 times [2018-10-24 01:32:29,592 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:32:29,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:32:29,593 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:32:29,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:32:29,593 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:32:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:32:30,322 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:32:30,323 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:32:30,323 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:32:30,324 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 218 with the following transitions: [2018-10-24 01:32:30,326 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [373], [375], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 01:32:30,400 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:32:30,401 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:32:31,779 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:32:32,208 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:32:32,210 INFO L272 AbstractInterpreter]: Visited 89 different actions 89 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 01:32:32,223 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:32:32,223 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:32:34,316 INFO L232 lantSequenceWeakener]: Weakened 209 states. On average, predicates are now at 78.26% of their original sizes. [2018-10-24 01:32:34,317 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:32:34,578 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:32:34,579 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:32:34,579 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2018-10-24 01:32:34,579 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:32:34,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 01:32:34,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 01:32:34,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 01:32:34,581 INFO L87 Difference]: Start difference. First operand 3263 states and 4437 transitions. Second operand 7 states. [2018-10-24 01:33:12,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:33:12,520 INFO L93 Difference]: Finished difference Result 6705 states and 9095 transitions. [2018-10-24 01:33:12,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:33:12,520 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2018-10-24 01:33:12,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:33:12,536 INFO L225 Difference]: With dead ends: 6705 [2018-10-24 01:33:12,536 INFO L226 Difference]: Without dead ends: 3448 [2018-10-24 01:33:12,548 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 217 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 01:33:12,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3448 states. [2018-10-24 01:33:12,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3448 to 3446. [2018-10-24 01:33:12,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3446 states. [2018-10-24 01:33:12,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3446 states to 3446 states and 4628 transitions. [2018-10-24 01:33:12,635 INFO L78 Accepts]: Start accepts. Automaton has 3446 states and 4628 transitions. Word has length 217 [2018-10-24 01:33:12,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:33:12,635 INFO L481 AbstractCegarLoop]: Abstraction has 3446 states and 4628 transitions. [2018-10-24 01:33:12,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 01:33:12,635 INFO L276 IsEmpty]: Start isEmpty. Operand 3446 states and 4628 transitions. [2018-10-24 01:33:12,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-10-24 01:33:12,643 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:33:12,643 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 01:33:12,644 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:33:12,644 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:33:12,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1576427027, now seen corresponding path program 1 times [2018-10-24 01:33:12,645 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:33:12,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:33:12,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:33:12,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:33:12,646 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:33:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:33:13,118 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 01:33:13,315 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 01:33:13,519 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 01:33:13,998 WARN L179 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-10-24 01:33:14,355 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-10-24 01:33:14,596 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 243 proven. 140 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 01:33:14,597 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:33:14,597 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:33:14,597 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 303 with the following transitions: [2018-10-24 01:33:14,598 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [373], [375], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [554], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 01:33:14,604 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:33:14,604 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:33:15,559 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:33:17,823 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:33:17,824 INFO L272 AbstractInterpreter]: Visited 94 different actions 181 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 01:33:17,832 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:33:17,832 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:33:20,843 INFO L232 lantSequenceWeakener]: Weakened 85 states. On average, predicates are now at 78.18% of their original sizes. [2018-10-24 01:33:20,843 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:33:43,699 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:33:43,699 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:33:43,699 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [12] total 28 [2018-10-24 01:33:43,699 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:33:43,700 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-24 01:33:43,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-24 01:33:43,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2018-10-24 01:33:43,701 INFO L87 Difference]: Start difference. First operand 3446 states and 4628 transitions. Second operand 18 states. Received shutdown request... [2018-10-24 01:36:01,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-24 01:36:01,252 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 01:36:01,257 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 01:36:01,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:36:01 BoogieIcfgContainer [2018-10-24 01:36:01,257 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 01:36:01,258 INFO L168 Benchmark]: Toolchain (without parser) took 229721.61 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 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 01:36:01,259 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 01:36:01,260 INFO L168 Benchmark]: CACSL2BoogieTranslator took 797.66 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 01:36:01,261 INFO L168 Benchmark]: Boogie Procedure Inliner took 239.41 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -826.8 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-24 01:36:01,262 INFO L168 Benchmark]: Boogie Preprocessor took 119.07 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2018-10-24 01:36:01,263 INFO L168 Benchmark]: RCFGBuilder took 3572.96 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: 132.1 MB). Peak memory consumption was 132.1 MB. Max. memory is 7.1 GB. [2018-10-24 01:36:01,263 INFO L168 Benchmark]: TraceAbstraction took 224987.10 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 2.9 GB in the end (delta: -838.8 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-24 01:36:01,271 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 797.66 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 239.41 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -826.8 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.07 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3572.96 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: 132.1 MB). Peak memory consumption was 132.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 224987.10 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 2.9 GB in the end (delta: -838.8 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 160]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 160). Cancelled while BasicCegarLoop was constructing difference of abstraction (3446states) and FLOYD_HOARE automaton (currently 18 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (2098 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 224.9s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 187.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 693 SDtfs, 5469 SDslu, 805 SDs, 0 SdLazy, 7391 SolverSat, 1284 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 71.9s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 557 GetRequests, 485 SyntacticMatches, 24 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 24.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3446occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.1s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9952730356291869 AbsIntWeakeningRatio, 0.11218568665377177 AbsIntAvgWeakeningVarsNumRemoved, 544.6015473887815 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 151 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 969 NumberOfCodeBlocks, 969 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 963 ConstructedInterpolants, 0 QuantifiedInterpolants, 1937457 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 580/722 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown