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_label09_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 01:01:49,630 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 01:01:49,632 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 01:01:49,644 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 01:01:49,645 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 01:01:49,646 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 01:01:49,648 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 01:01:49,653 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 01:01:49,655 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 01:01:49,657 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 01:01:49,659 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 01:01:49,660 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 01:01:49,661 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 01:01:49,662 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 01:01:49,670 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 01:01:49,671 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 01:01:49,672 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 01:01:49,676 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 01:01:49,682 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 01:01:49,684 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 01:01:49,685 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 01:01:49,686 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 01:01:49,688 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 01:01:49,696 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 01:01:49,712 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 01:01:49,712 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 01:01:49,713 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 01:01:49,713 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 01:01:49,713 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 01:01:49,713 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 01:01:49,714 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 01:01:49,714 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 01:01:49,714 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 01:01:49,714 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 01:01:49,714 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 01:01:49,715 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 01:01:49,715 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 01:01:49,716 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 01:01:49,716 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 01:01:49,716 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 01:01:49,716 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 01:01:49,716 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 01:01:49,716 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 01:01:49,717 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 01:01:49,717 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 01:01:49,717 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 01:01:49,717 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 01:01:49,717 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 01:01:49,718 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:01:49,718 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 01:01:49,718 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 01:01:49,718 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 01:01:49,718 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 01:01:49,719 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 01:01:49,719 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 01:01:49,719 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 01:01:49,719 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 01:01:49,719 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 01:01:49,779 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 01:01:49,794 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 01:01:49,797 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 01:01:49,799 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 01:01:49,799 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 01:01:49,800 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label09_true-unreach-call.c [2018-10-24 01:01:49,864 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/078baaa6b/45927b7494a84cdea943bcdabd5b7f81/FLAGcc4aa4f0f [2018-10-24 01:01:50,550 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 01:01:50,551 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label09_true-unreach-call.c [2018-10-24 01:01:50,566 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/078baaa6b/45927b7494a84cdea943bcdabd5b7f81/FLAGcc4aa4f0f [2018-10-24 01:01:50,587 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/078baaa6b/45927b7494a84cdea943bcdabd5b7f81 [2018-10-24 01:01:50,602 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 01:01:50,605 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 01:01:50,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 01:01:50,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 01:01:50,612 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 01:01:50,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:01:50" (1/1) ... [2018-10-24 01:01:50,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33fe9958 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:01:50, skipping insertion in model container [2018-10-24 01:01:50,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:01:50" (1/1) ... [2018-10-24 01:01:50,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 01:01:50,724 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 01:01:51,362 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:01:51,368 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 01:01:51,570 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:01:51,591 INFO L193 MainTranslator]: Completed translation [2018-10-24 01:01:51,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:01:51 WrapperNode [2018-10-24 01:01:51,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 01:01:51,592 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 01:01:51,593 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 01:01:51,593 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 01:01:51,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:01:51" (1/1) ... [2018-10-24 01:01:51,636 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:01:51" (1/1) ... [2018-10-24 01:01:51,897 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 01:01:51,897 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 01:01:51,897 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 01:01:51,897 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 01:01:51,908 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:01:51" (1/1) ... [2018-10-24 01:01:51,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:01:51" (1/1) ... [2018-10-24 01:01:51,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:01:51" (1/1) ... [2018-10-24 01:01:51,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:01:51" (1/1) ... [2018-10-24 01:01:52,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:01:51" (1/1) ... [2018-10-24 01:01:52,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:01:51" (1/1) ... [2018-10-24 01:01:52,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:01:51" (1/1) ... [2018-10-24 01:01:52,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 01:01:52,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 01:01:52,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 01:01:52,076 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 01:01:52,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:01:51" (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 01:01:52,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 01:01:52,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 01:01:52,159 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 01:01:52,160 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 01:01:52,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 01:01:52,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 01:01:52,161 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 01:01:52,162 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 01:01:57,159 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 01:01:57,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:01:57 BoogieIcfgContainer [2018-10-24 01:01:57,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 01:01:57,165 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 01:01:57,165 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 01:01:57,168 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 01:01:57,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:01:50" (1/3) ... [2018-10-24 01:01:57,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56c0dd0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:01:57, skipping insertion in model container [2018-10-24 01:01:57,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:01:51" (2/3) ... [2018-10-24 01:01:57,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56c0dd0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:01:57, skipping insertion in model container [2018-10-24 01:01:57,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:01:57" (3/3) ... [2018-10-24 01:01:57,172 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label09_true-unreach-call.c [2018-10-24 01:01:57,183 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 01:01:57,193 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 01:01:57,212 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 01:01:57,254 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 01:01:57,255 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 01:01:57,255 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 01:01:57,255 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 01:01:57,255 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 01:01:57,255 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 01:01:57,256 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 01:01:57,256 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 01:01:57,285 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-24 01:01:57,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-24 01:01:57,299 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:01:57,301 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:01:57,303 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:01:57,309 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:01:57,310 INFO L82 PathProgramCache]: Analyzing trace with hash -662645095, now seen corresponding path program 1 times [2018-10-24 01:01:57,313 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:01:57,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:01:57,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:01:57,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:01:57,363 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:01:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:01:57,880 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 01:01:57,882 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:01:57,883 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 01:01:57,883 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:01:57,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 01:01:57,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 01:01:57,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:01:57,910 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-24 01:02:01,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:02:01,011 INFO L93 Difference]: Finished difference Result 985 states and 1761 transitions. [2018-10-24 01:02:01,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 01:02:01,014 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2018-10-24 01:02:01,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:02:01,039 INFO L225 Difference]: With dead ends: 985 [2018-10-24 01:02:01,039 INFO L226 Difference]: Without dead ends: 686 [2018-10-24 01:02:01,049 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:02:01,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2018-10-24 01:02:01,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2018-10-24 01:02:01,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2018-10-24 01:02:01,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1046 transitions. [2018-10-24 01:02:01,152 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1046 transitions. Word has length 73 [2018-10-24 01:02:01,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:02:01,153 INFO L481 AbstractCegarLoop]: Abstraction has 686 states and 1046 transitions. [2018-10-24 01:02:01,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 01:02:01,153 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1046 transitions. [2018-10-24 01:02:01,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-24 01:02:01,163 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:02:01,164 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, 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] [2018-10-24 01:02:01,164 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:02:01,165 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:02:01,165 INFO L82 PathProgramCache]: Analyzing trace with hash -2141432933, now seen corresponding path program 1 times [2018-10-24 01:02:01,165 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:02:01,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:02:01,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:02:01,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:02:01,167 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:02:01,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:02:01,604 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:02:01,605 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:02:01,605 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:02:01,605 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:02:01,608 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:02:01,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:02:01,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:02:01,610 INFO L87 Difference]: Start difference. First operand 686 states and 1046 transitions. Second operand 6 states. [2018-10-24 01:02:09,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:02:09,326 INFO L93 Difference]: Finished difference Result 2339 states and 3736 transitions. [2018-10-24 01:02:09,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:02:09,330 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 154 [2018-10-24 01:02:09,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:02:09,348 INFO L225 Difference]: With dead ends: 2339 [2018-10-24 01:02:09,349 INFO L226 Difference]: Without dead ends: 1659 [2018-10-24 01:02:09,354 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 01:02:09,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2018-10-24 01:02:09,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1637. [2018-10-24 01:02:09,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1637 states. [2018-10-24 01:02:09,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1637 states to 1637 states and 2351 transitions. [2018-10-24 01:02:09,459 INFO L78 Accepts]: Start accepts. Automaton has 1637 states and 2351 transitions. Word has length 154 [2018-10-24 01:02:09,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:02:09,460 INFO L481 AbstractCegarLoop]: Abstraction has 1637 states and 2351 transitions. [2018-10-24 01:02:09,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:02:09,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1637 states and 2351 transitions. [2018-10-24 01:02:09,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-10-24 01:02:09,468 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:02:09,468 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:02:09,468 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:02:09,469 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:02:09,469 INFO L82 PathProgramCache]: Analyzing trace with hash -2008994851, now seen corresponding path program 1 times [2018-10-24 01:02:09,469 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:02:09,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:02:09,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:02:09,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:02:09,471 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:02:09,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:02:09,874 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 60 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:02:09,874 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:02:09,875 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:02:09,876 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 206 with the following transitions: [2018-10-24 01:02:09,878 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], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [485], [487], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [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], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 01:02:09,955 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:02:09,955 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:02:14,370 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:02:31,268 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:02:31,270 INFO L272 AbstractInterpreter]: Visited 139 different actions 404 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 01:02:31,321 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:02:31,321 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:02:35,283 INFO L232 lantSequenceWeakener]: Weakened 3 states. On average, predicates are now at 84.62% of their original sizes. [2018-10-24 01:02:35,284 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:03:34,717 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:03:34,718 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:03:34,719 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [8] total 22 [2018-10-24 01:03:34,719 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:03:34,720 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-24 01:03:34,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-24 01:03:34,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2018-10-24 01:03:34,721 INFO L87 Difference]: Start difference. First operand 1637 states and 2351 transitions. Second operand 16 states. Received shutdown request... [2018-10-24 01:06:06,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-24 01:06:06,838 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 01:06:06,845 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 01:06:06,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:06:06 BoogieIcfgContainer [2018-10-24 01:06:06,845 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 01:06:06,846 INFO L168 Benchmark]: Toolchain (without parser) took 256243.43 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -677.2 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-24 01:06:06,848 INFO L168 Benchmark]: CDTParser took 0.18 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 01:06:06,849 INFO L168 Benchmark]: CACSL2BoogieTranslator took 985.86 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2018-10-24 01:06:06,850 INFO L168 Benchmark]: Boogie Procedure Inliner took 304.37 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -830.9 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2018-10-24 01:06:06,851 INFO L168 Benchmark]: Boogie Preprocessor took 177.99 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 01:06:06,851 INFO L168 Benchmark]: RCFGBuilder took 5088.38 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: 173.5 MB). Peak memory consumption was 173.5 MB. Max. memory is 7.1 GB. [2018-10-24 01:06:06,852 INFO L168 Benchmark]: TraceAbstraction took 249680.58 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 2.1 GB in the end (delta: -72.6 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-24 01:06:06,857 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 985.86 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 304.37 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -830.9 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 177.99 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 5088.38 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: 173.5 MB). Peak memory consumption was 173.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 249680.58 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 2.1 GB in the end (delta: -72.6 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 204]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 204). Cancelled while BasicCegarLoop was constructing difference of abstraction (1637states) and FLOYD_HOARE automaton (currently 18 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (876 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 249.6s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 163.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 346 SDtfs, 2450 SDslu, 357 SDs, 0 SdLazy, 4155 SolverSat, 675 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 52.5s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 225 GetRequests, 146 SyntacticMatches, 51 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 63.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1637occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 21.4s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9955908289241623 AbsIntWeakeningRatio, 0.11274509803921569 AbsIntAvgWeakeningVarsNumRemoved, 1064.9117647058824 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 22 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 432 NumberOfCodeBlocks, 432 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 429 ConstructedInterpolants, 0 QuantifiedInterpolants, 381873 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 126/132 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown