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/Problem11_label56_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 01:11:56,690 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 01:11:56,696 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 01:11:56,709 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 01:11:56,709 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 01:11:56,710 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 01:11:56,712 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 01:11:56,713 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 01:11:56,715 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 01:11:56,716 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 01:11:56,717 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 01:11:56,717 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 01:11:56,718 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 01:11:56,719 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 01:11:56,721 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 01:11:56,721 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 01:11:56,722 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 01:11:56,724 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 01:11:56,726 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 01:11:56,728 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 01:11:56,729 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 01:11:56,730 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 01:11:56,733 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 01:11:56,740 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 01:11:56,740 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 01:11:56,741 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 01:11:56,742 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 01:11:56,742 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 01:11:56,758 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 01:11:56,759 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 01:11:56,760 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 01:11:56,760 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 01:11:56,760 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 01:11:56,760 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 01:11:56,760 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 01:11:56,761 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 01:11:56,761 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 01:11:56,761 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 01:11:56,761 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 01:11:56,761 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 01:11:56,762 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 01:11:56,762 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 01:11:56,762 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 01:11:56,763 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 01:11:56,763 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 01:11:56,764 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 01:11:56,764 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 01:11:56,764 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 01:11:56,764 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 01:11:56,764 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 01:11:56,765 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 01:11:56,765 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 01:11:56,765 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:11:56,765 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 01:11:56,765 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 01:11:56,766 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 01:11:56,766 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 01:11:56,766 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 01:11:56,767 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 01:11:56,767 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 01:11:56,767 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 01:11:56,767 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 01:11:56,823 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 01:11:56,840 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 01:11:56,843 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 01:11:56,844 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 01:11:56,845 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 01:11:56,846 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label56_true-unreach-call.c [2018-10-24 01:11:56,914 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9a0cd5027/58de6a93c1334b7499b6d5b37144d73f/FLAGac736c643 [2018-10-24 01:11:57,531 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 01:11:57,535 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label56_true-unreach-call.c [2018-10-24 01:11:57,554 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9a0cd5027/58de6a93c1334b7499b6d5b37144d73f/FLAGac736c643 [2018-10-24 01:11:57,577 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9a0cd5027/58de6a93c1334b7499b6d5b37144d73f [2018-10-24 01:11:57,590 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 01:11:57,592 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 01:11:57,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 01:11:57,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 01:11:57,600 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 01:11:57,602 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:11:57" (1/1) ... [2018-10-24 01:11:57,605 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:11:57, skipping insertion in model container [2018-10-24 01:11:57,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:11:57" (1/1) ... [2018-10-24 01:11:57,617 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 01:11:57,685 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 01:11:58,229 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:11:58,239 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 01:11:58,440 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:11:58,474 INFO L193 MainTranslator]: Completed translation [2018-10-24 01:11:58,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:11:58 WrapperNode [2018-10-24 01:11:58,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 01:11:58,476 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 01:11:58,476 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 01:11:58,476 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 01:11:58,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:11:58" (1/1) ... [2018-10-24 01:11:58,521 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:11:58" (1/1) ... [2018-10-24 01:11:58,794 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 01:11:58,794 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 01:11:58,794 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 01:11:58,795 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 01:11:58,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:11:58" (1/1) ... [2018-10-24 01:11:58,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:11:58" (1/1) ... [2018-10-24 01:11:58,818 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:11:58" (1/1) ... [2018-10-24 01:11:58,819 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:11:58" (1/1) ... [2018-10-24 01:11:58,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:11:58" (1/1) ... [2018-10-24 01:11:58,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:11:58" (1/1) ... [2018-10-24 01:11:58,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:11:58" (1/1) ... [2018-10-24 01:11:58,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 01:11:58,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 01:11:58,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 01:11:58,915 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 01:11:58,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:11:58" (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 01:11:58,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 01:11:58,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 01:11:58,991 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 01:11:58,991 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 01:11:58,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 01:11:58,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 01:11:58,993 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 01:11:58,993 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 01:12:03,565 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 01:12:03,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:12:03 BoogieIcfgContainer [2018-10-24 01:12:03,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 01:12:03,567 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 01:12:03,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 01:12:03,571 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 01:12:03,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:11:57" (1/3) ... [2018-10-24 01:12:03,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c9e6d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:12:03, skipping insertion in model container [2018-10-24 01:12:03,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:11:58" (2/3) ... [2018-10-24 01:12:03,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c9e6d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:12:03, skipping insertion in model container [2018-10-24 01:12:03,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:12:03" (3/3) ... [2018-10-24 01:12:03,576 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label56_true-unreach-call.c [2018-10-24 01:12:03,587 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 01:12:03,597 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 01:12:03,617 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 01:12:03,661 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 01:12:03,661 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 01:12:03,662 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 01:12:03,662 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 01:12:03,662 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 01:12:03,662 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 01:12:03,662 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 01:12:03,663 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 01:12:03,693 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-24 01:12:03,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-24 01:12:03,702 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:12:03,704 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] [2018-10-24 01:12:03,706 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:12:03,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:12:03,713 INFO L82 PathProgramCache]: Analyzing trace with hash -822687572, now seen corresponding path program 1 times [2018-10-24 01:12:03,715 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:12:03,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:12:03,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:12:03,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:12:03,775 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:12:03,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:12:04,213 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:12:04,312 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 01:12:04,315 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:12:04,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 01:12:04,316 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:12:04,325 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 01:12:04,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 01:12:04,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 01:12:04,347 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-10-24 01:12:07,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:12:07,084 INFO L93 Difference]: Finished difference Result 782 states and 1372 transitions. [2018-10-24 01:12:07,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 01:12:07,088 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2018-10-24 01:12:07,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:12:07,111 INFO L225 Difference]: With dead ends: 782 [2018-10-24 01:12:07,111 INFO L226 Difference]: Without dead ends: 487 [2018-10-24 01:12:07,120 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 01:12:07,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2018-10-24 01:12:07,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 482. [2018-10-24 01:12:07,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2018-10-24 01:12:07,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 843 transitions. [2018-10-24 01:12:07,211 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 843 transitions. Word has length 48 [2018-10-24 01:12:07,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:12:07,212 INFO L481 AbstractCegarLoop]: Abstraction has 482 states and 843 transitions. [2018-10-24 01:12:07,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 01:12:07,212 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 843 transitions. [2018-10-24 01:12:07,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-24 01:12:07,225 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:12:07,226 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:12:07,226 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:12:07,227 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:12:07,227 INFO L82 PathProgramCache]: Analyzing trace with hash -191480489, now seen corresponding path program 1 times [2018-10-24 01:12:07,227 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:12:07,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:12:07,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:12:07,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:12:07,230 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:12:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:12:07,815 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:12:07,816 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:12:07,816 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-24 01:12:07,816 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:12:07,819 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 01:12:07,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 01:12:07,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 01:12:07,820 INFO L87 Difference]: Start difference. First operand 482 states and 843 transitions. Second operand 7 states. [2018-10-24 01:12:15,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:12:15,755 INFO L93 Difference]: Finished difference Result 1760 states and 3239 transitions. [2018-10-24 01:12:15,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 01:12:15,756 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2018-10-24 01:12:15,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:12:15,776 INFO L225 Difference]: With dead ends: 1760 [2018-10-24 01:12:15,776 INFO L226 Difference]: Without dead ends: 1284 [2018-10-24 01:12:15,783 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-10-24 01:12:15,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2018-10-24 01:12:15,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1037. [2018-10-24 01:12:15,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2018-10-24 01:12:15,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1685 transitions. [2018-10-24 01:12:15,885 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1685 transitions. Word has length 123 [2018-10-24 01:12:15,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:12:15,886 INFO L481 AbstractCegarLoop]: Abstraction has 1037 states and 1685 transitions. [2018-10-24 01:12:15,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 01:12:15,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1685 transitions. [2018-10-24 01:12:15,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-24 01:12:15,901 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:12:15,901 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, 2, 2, 2, 2, 2, 2, 2, 2, 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 01:12:15,901 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:12:15,902 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:12:15,903 INFO L82 PathProgramCache]: Analyzing trace with hash -259626392, now seen corresponding path program 1 times [2018-10-24 01:12:15,903 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:12:15,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:12:15,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:12:15,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:12:15,905 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:12:15,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:12:16,255 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 82 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 01:12:16,255 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:12:16,256 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:12:16,256 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 197 with the following transitions: [2018-10-24 01:12:16,258 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], [285], [287], [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], [506], [507], [511], [514], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 01:12:16,325 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:12:16,326 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:12:18,218 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:12:18,527 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:12:18,529 INFO L272 AbstractInterpreter]: Visited 80 different actions 80 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-24 01:12:18,563 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:12:18,564 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:12:21,251 INFO L232 lantSequenceWeakener]: Weakened 188 states. On average, predicates are now at 73.67% of their original sizes. [2018-10-24 01:12:21,251 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:12:21,727 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:12:21,728 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:12:21,728 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 01:12:21,728 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:12:21,729 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 01:12:21,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 01:12:21,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 01:12:21,730 INFO L87 Difference]: Start difference. First operand 1037 states and 1685 transitions. Second operand 7 states. [2018-10-24 01:12:44,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:12:44,738 INFO L93 Difference]: Finished difference Result 2260 states and 3574 transitions. [2018-10-24 01:12:44,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:12:44,738 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 196 [2018-10-24 01:12:44,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:12:44,745 INFO L225 Difference]: With dead ends: 2260 [2018-10-24 01:12:44,745 INFO L226 Difference]: Without dead ends: 1229 [2018-10-24 01:12:44,748 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 196 GetRequests, 190 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 01:12:44,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2018-10-24 01:12:44,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1227. [2018-10-24 01:12:44,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1227 states. [2018-10-24 01:12:44,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1883 transitions. [2018-10-24 01:12:44,786 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1883 transitions. Word has length 196 [2018-10-24 01:12:44,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:12:44,786 INFO L481 AbstractCegarLoop]: Abstraction has 1227 states and 1883 transitions. [2018-10-24 01:12:44,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 01:12:44,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1883 transitions. [2018-10-24 01:12:44,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-10-24 01:12:44,791 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:12:44,791 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 01:12:44,792 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:12:44,792 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:12:44,792 INFO L82 PathProgramCache]: Analyzing trace with hash 188115406, now seen corresponding path program 1 times [2018-10-24 01:12:44,792 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:12:44,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:12:44,794 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:12:44,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:12:44,794 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:12:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:12:45,512 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-24 01:12:45,513 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:12:45,513 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:12:45,513 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 241 with the following transitions: [2018-10-24 01:12:45,514 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], [285], [287], [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], [514], [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], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 01:12:45,521 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:12:45,521 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:12:48,768 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:13:01,156 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:13:01,156 INFO L272 AbstractInterpreter]: Visited 125 different actions 362 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-24 01:13:01,163 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:13:01,163 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:13:05,544 INFO L232 lantSequenceWeakener]: Weakened 238 states. On average, predicates are now at 73.6% of their original sizes. [2018-10-24 01:13:05,544 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:13:06,465 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:13:06,466 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:13:06,466 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [6] total 16 [2018-10-24 01:13:06,466 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:13:06,467 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-24 01:13:06,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-24 01:13:06,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2018-10-24 01:13:06,468 INFO L87 Difference]: Start difference. First operand 1227 states and 1883 transitions. Second operand 12 states. [2018-10-24 01:14:25,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:14:25,707 INFO L93 Difference]: Finished difference Result 2453 states and 3929 transitions. [2018-10-24 01:14:25,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-24 01:14:25,707 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 240 [2018-10-24 01:14:25,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:14:25,715 INFO L225 Difference]: With dead ends: 2453 [2018-10-24 01:14:25,716 INFO L226 Difference]: Without dead ends: 1422 [2018-10-24 01:14:25,720 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 249 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2018-10-24 01:14:25,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1422 states. [2018-10-24 01:14:25,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1422 to 1418. [2018-10-24 01:14:25,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1418 states. [2018-10-24 01:14:25,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 2090 transitions. [2018-10-24 01:14:25,765 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 2090 transitions. Word has length 240 [2018-10-24 01:14:25,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:14:25,766 INFO L481 AbstractCegarLoop]: Abstraction has 1418 states and 2090 transitions. [2018-10-24 01:14:25,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-24 01:14:25,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 2090 transitions. [2018-10-24 01:14:25,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-10-24 01:14:25,770 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:14:25,771 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:14:25,771 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:14:25,771 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:14:25,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1100609894, now seen corresponding path program 1 times [2018-10-24 01:14:25,772 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:14:25,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:14:25,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:14:25,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:14:25,773 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:14:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:14:26,067 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-10-24 01:14:26,068 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:14:26,068 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 01:14:26,068 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:14:26,069 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 01:14:26,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 01:14:26,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:14:26,069 INFO L87 Difference]: Start difference. First operand 1418 states and 2090 transitions. Second operand 4 states. [2018-10-24 01:14:27,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:14:27,995 INFO L93 Difference]: Finished difference Result 3943 states and 6559 transitions. [2018-10-24 01:14:27,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 01:14:27,995 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 250 [2018-10-24 01:14:27,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:14:28,013 INFO L225 Difference]: With dead ends: 3943 [2018-10-24 01:14:28,013 INFO L226 Difference]: Without dead ends: 2912 [2018-10-24 01:14:28,023 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:14:28,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2018-10-24 01:14:28,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 2896. [2018-10-24 01:14:28,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2896 states. [2018-10-24 01:14:28,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2896 states to 2896 states and 4414 transitions. [2018-10-24 01:14:28,111 INFO L78 Accepts]: Start accepts. Automaton has 2896 states and 4414 transitions. Word has length 250 [2018-10-24 01:14:28,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:14:28,112 INFO L481 AbstractCegarLoop]: Abstraction has 2896 states and 4414 transitions. [2018-10-24 01:14:28,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 01:14:28,112 INFO L276 IsEmpty]: Start isEmpty. Operand 2896 states and 4414 transitions. [2018-10-24 01:14:28,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-10-24 01:14:28,120 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:14:28,120 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 01:14:28,121 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:14:28,121 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:14:28,121 INFO L82 PathProgramCache]: Analyzing trace with hash -2052167774, now seen corresponding path program 1 times [2018-10-24 01:14:28,121 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:14:28,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:14:28,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:14:28,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:14:28,122 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:14:28,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:14:28,694 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:14:28,694 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:14:28,694 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:14:28,695 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 267 with the following transitions: [2018-10-24 01:14:28,695 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], [285], [287], [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], [578], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 01:14:28,706 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:14:28,706 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:14:32,077 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:14:46,683 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:14:46,684 INFO L272 AbstractInterpreter]: Visited 135 different actions 392 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-24 01:14:46,691 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:14:46,691 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:14:51,456 INFO L232 lantSequenceWeakener]: Weakened 161 states. On average, predicates are now at 74.22% of their original sizes. [2018-10-24 01:14:51,456 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:15:06,152 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:15:06,153 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:15:06,153 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-10-24 01:15:06,153 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:15:06,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-24 01:15:06,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-24 01:15:06,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2018-10-24 01:15:06,155 INFO L87 Difference]: Start difference. First operand 2896 states and 4414 transitions. Second operand 23 states. Received shutdown request... [2018-10-24 01:15:52,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 01:15:52,753 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 01:15:52,757 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 01:15:52,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:15:52 BoogieIcfgContainer [2018-10-24 01:15:52,758 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 01:15:52,758 INFO L168 Benchmark]: Toolchain (without parser) took 235167.48 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -638.0 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-24 01:15:52,760 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 01:15:52,763 INFO L168 Benchmark]: CACSL2BoogieTranslator took 881.78 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-10-24 01:15:52,764 INFO L168 Benchmark]: Boogie Procedure Inliner took 318.18 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 729.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -817.6 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2018-10-24 01:15:52,764 INFO L168 Benchmark]: Boogie Preprocessor took 119.60 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 01:15:52,765 INFO L168 Benchmark]: RCFGBuilder took 4652.03 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 184.1 MB). Peak memory consumption was 184.1 MB. Max. memory is 7.1 GB. [2018-10-24 01:15:52,766 INFO L168 Benchmark]: TraceAbstraction took 229190.61 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.1 GB in the end (delta: -67.8 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-24 01:15:52,771 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 881.78 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 318.18 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 729.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -817.6 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.60 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4652.03 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 184.1 MB). Peak memory consumption was 184.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 229190.61 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.1 GB in the end (delta: -67.8 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 129]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 129). Cancelled while BasicCegarLoop was constructing difference of abstraction (2896states) and FLOYD_HOARE automaton (currently 9 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (92 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 229.1s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 161.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1358 SDtfs, 3876 SDslu, 1188 SDs, 0 SdLazy, 7395 SolverSat, 1126 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 82.5s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 738 GetRequests, 671 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 20.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2896occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 35.9s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9955700130950486 AbsIntWeakeningRatio, 0.12017167381974249 AbsIntAvgWeakeningVarsNumRemoved, 454.20600858369096 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 274 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 1123 NumberOfCodeBlocks, 1123 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1117 ConstructedInterpolants, 0 QuantifiedInterpolants, 775260 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 538/693 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown