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/Problem15_label52_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:52:00,553 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:52:00,556 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:52:00,574 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:52:00,576 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:52:00,577 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:52:00,579 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:52:00,581 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:52:00,584 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:52:00,585 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:52:00,587 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:52:00,587 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:52:00,588 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:52:00,590 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:52:00,598 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:52:00,599 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:52:00,599 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:52:00,604 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:52:00,610 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:52:00,614 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:52:00,615 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:52:00,618 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:52:00,623 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:52:00,631 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 21:52:00,647 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:52:00,648 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:52:00,650 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:52:00,650 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:52:00,651 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:52:00,651 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:52:00,651 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:52:00,651 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:52:00,652 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:52:00,652 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:52:00,652 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:52:00,652 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:52:00,653 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:52:00,653 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:52:00,653 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:52:00,654 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:52:00,654 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:52:00,654 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:52:00,654 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:52:00,655 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:52:00,655 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:52:00,655 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:52:00,655 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:52:00,655 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:52:00,656 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:52:00,656 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:52:00,656 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:52:00,656 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:52:00,656 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:52:00,657 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:52:00,657 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:52:00,657 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:52:00,657 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:52:00,657 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:52:00,734 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:52:00,755 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:52:00,759 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:52:00,761 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:52:00,762 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:52:00,763 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label52_true-unreach-call.c [2018-10-24 21:52:00,833 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ef6a6e764/955d6047315d4cf2abb5c4aa0d136678/FLAG5ce286c36 [2018-10-24 21:52:01,577 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:52:01,580 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label52_true-unreach-call.c [2018-10-24 21:52:01,604 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ef6a6e764/955d6047315d4cf2abb5c4aa0d136678/FLAG5ce286c36 [2018-10-24 21:52:01,620 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ef6a6e764/955d6047315d4cf2abb5c4aa0d136678 [2018-10-24 21:52:01,632 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:52:01,634 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:52:01,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:52:01,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:52:01,640 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:52:01,641 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:52:01" (1/1) ... [2018-10-24 21:52:01,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@309cd1a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:01, skipping insertion in model container [2018-10-24 21:52:01,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:52:01" (1/1) ... [2018-10-24 21:52:01,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:52:01,758 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:52:02,528 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:52:02,533 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:52:02,874 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:52:02,924 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:52:02,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:02 WrapperNode [2018-10-24 21:52:02,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:52:02,926 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:52:02,928 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:52:02,928 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:52:02,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:02" (1/1) ... [2018-10-24 21:52:03,000 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:02" (1/1) ... [2018-10-24 21:52:03,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:52:03,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:52:03,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:52:03,356 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:52:03,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:02" (1/1) ... [2018-10-24 21:52:03,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:02" (1/1) ... [2018-10-24 21:52:03,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:02" (1/1) ... [2018-10-24 21:52:03,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:02" (1/1) ... [2018-10-24 21:52:03,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:02" (1/1) ... [2018-10-24 21:52:03,496 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:02" (1/1) ... [2018-10-24 21:52:03,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:02" (1/1) ... [2018-10-24 21:52:03,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:52:03,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:52:03,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:52:03,574 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:52:03,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:02" (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 21:52:03,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:52:03,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:52:03,639 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:52:03,639 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:52:03,639 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:52:03,639 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:52:03,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:52:03,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:52:03,640 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:52:03,640 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:52:10,063 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:52:10,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:52:10 BoogieIcfgContainer [2018-10-24 21:52:10,064 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:52:10,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:52:10,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:52:10,069 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:52:10,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:52:01" (1/3) ... [2018-10-24 21:52:10,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1b73d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:52:10, skipping insertion in model container [2018-10-24 21:52:10,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:02" (2/3) ... [2018-10-24 21:52:10,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1b73d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:52:10, skipping insertion in model container [2018-10-24 21:52:10,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:52:10" (3/3) ... [2018-10-24 21:52:10,074 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label52_true-unreach-call.c [2018-10-24 21:52:10,084 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:52:10,095 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:52:10,113 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:52:10,156 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:52:10,157 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:52:10,157 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:52:10,157 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:52:10,157 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:52:10,157 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:52:10,158 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:52:10,158 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:52:10,190 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-24 21:52:10,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-24 21:52:10,200 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:52:10,201 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] [2018-10-24 21:52:10,206 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:52:10,215 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:52:10,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1248930748, now seen corresponding path program 1 times [2018-10-24 21:52:10,219 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:52:10,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:52:10,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:52:10,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:52:10,280 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:52:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:52:10,822 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 21:52:10,824 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:52:10,825 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:52:10,825 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:52:10,832 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:52:10,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:52:10,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:52:10,851 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-24 21:52:21,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:52:21,419 INFO L93 Difference]: Finished difference Result 1501 states and 2761 transitions. [2018-10-24 21:52:21,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:52:21,421 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2018-10-24 21:52:21,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:52:21,450 INFO L225 Difference]: With dead ends: 1501 [2018-10-24 21:52:21,450 INFO L226 Difference]: Without dead ends: 1057 [2018-10-24 21:52:21,461 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 21:52:21,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2018-10-24 21:52:21,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 744. [2018-10-24 21:52:21,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-24 21:52:21,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1125 transitions. [2018-10-24 21:52:21,587 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1125 transitions. Word has length 46 [2018-10-24 21:52:21,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:52:21,588 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1125 transitions. [2018-10-24 21:52:21,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:52:21,589 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1125 transitions. [2018-10-24 21:52:21,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-24 21:52:21,595 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:52:21,595 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:52:21,596 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:52:21,596 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:52:21,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1082195663, now seen corresponding path program 1 times [2018-10-24 21:52:21,596 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:52:21,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:52:21,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:52:21,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:52:21,598 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:52:21,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:52:21,880 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:52:21,880 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:52:21,880 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:52:21,880 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:52:21,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:52:21,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:52:21,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:52:21,884 INFO L87 Difference]: Start difference. First operand 744 states and 1125 transitions. Second operand 4 states. [2018-10-24 21:52:28,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:52:28,219 INFO L93 Difference]: Finished difference Result 2729 states and 4237 transitions. [2018-10-24 21:52:28,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:52:28,220 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2018-10-24 21:52:28,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:52:28,234 INFO L225 Difference]: With dead ends: 2729 [2018-10-24 21:52:28,234 INFO L226 Difference]: Without dead ends: 1991 [2018-10-24 21:52:28,240 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 21:52:28,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1991 states. [2018-10-24 21:52:28,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1991 to 1989. [2018-10-24 21:52:28,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1989 states. [2018-10-24 21:52:28,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1989 states to 1989 states and 2772 transitions. [2018-10-24 21:52:28,336 INFO L78 Accepts]: Start accepts. Automaton has 1989 states and 2772 transitions. Word has length 116 [2018-10-24 21:52:28,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:52:28,337 INFO L481 AbstractCegarLoop]: Abstraction has 1989 states and 2772 transitions. [2018-10-24 21:52:28,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:52:28,337 INFO L276 IsEmpty]: Start isEmpty. Operand 1989 states and 2772 transitions. [2018-10-24 21:52:28,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-10-24 21:52:28,351 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:52:28,352 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:52:28,352 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:52:28,352 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:52:28,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1707826587, now seen corresponding path program 1 times [2018-10-24 21:52:28,353 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:52:28,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:52:28,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:52:28,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:52:28,354 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:52:28,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:52:29,245 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 81 proven. 87 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 21:52:29,245 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:52:29,245 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:52:29,247 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 301 with the following transitions: [2018-10-24 21:52:29,249 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [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], [341], [343], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [994], [997], [1001], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 21:52:29,326 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:52:29,327 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:52:31,477 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:52:47,403 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:52:47,405 INFO L272 AbstractInterpreter]: Visited 164 different actions 479 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 21:52:47,418 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:52:47,418 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:52:52,410 INFO L232 lantSequenceWeakener]: Weakened 114 states. On average, predicates are now at 77.63% of their original sizes. [2018-10-24 21:52:52,410 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:55:34,433 INFO L413 sIntCurrentIteration]: We have 299 unified AI predicates [2018-10-24 21:55:34,433 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:55:34,434 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:55:34,435 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [6] total 19 [2018-10-24 21:55:34,435 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:55:34,436 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-24 21:55:34,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-24 21:55:34,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2018-10-24 21:55:34,437 INFO L87 Difference]: Start difference. First operand 1989 states and 2772 transitions. Second operand 15 states. Received shutdown request... [2018-10-24 21:56:18,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-24 21:56:18,608 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:56:18,613 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:56:18,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:56:18 BoogieIcfgContainer [2018-10-24 21:56:18,614 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:56:18,614 INFO L168 Benchmark]: Toolchain (without parser) took 256981.44 ms. Allocated memory was 1.5 GB in the beginning and 3.2 GB in the end (delta: 1.7 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -396.2 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-24 21:56:18,616 INFO L168 Benchmark]: CDTParser took 0.23 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 21:56:18,617 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1289.72 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-10-24 21:56:18,618 INFO L168 Benchmark]: Boogie Procedure Inliner took 429.76 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 742.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -865.9 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. [2018-10-24 21:56:18,619 INFO L168 Benchmark]: Boogie Preprocessor took 217.57 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2018-10-24 21:56:18,620 INFO L168 Benchmark]: RCFGBuilder took 6491.10 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 310.5 MB). Peak memory consumption was 310.5 MB. Max. memory is 7.1 GB. [2018-10-24 21:56:18,620 INFO L168 Benchmark]: TraceAbstraction took 248548.13 ms. Allocated memory was 2.3 GB in the beginning and 3.2 GB in the end (delta: 940.0 MB). Free memory was 1.8 GB in the beginning and 1.8 GB in the end (delta: 39.1 MB). Peak memory consumption was 979.2 MB. Max. memory is 7.1 GB. [2018-10-24 21:56:18,626 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 1289.72 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 429.76 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 742.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -865.9 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 217.57 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6491.10 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 310.5 MB). Peak memory consumption was 310.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 248548.13 ms. Allocated memory was 2.3 GB in the beginning and 3.2 GB in the end (delta: 940.0 MB). Free memory was 1.8 GB in the beginning and 1.8 GB in the end (delta: 39.1 MB). Peak memory consumption was 979.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 124]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 124). Cancelled while BasicCegarLoop was constructing difference of abstraction (1989states) and FLOYD_HOARE automaton (currently 16 states, 15 states before enhancement),while ReachableStatesComputation was computing reachable states (207 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 248.4s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 61.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 647 SDtfs, 1919 SDslu, 406 SDs, 0 SdLazy, 3882 SolverSat, 1283 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 24.6s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 316 GetRequests, 60 SyntacticMatches, 233 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1043 ImplicationChecksByTransitivity, 163.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1989occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 18.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9962011051330523 AbsIntWeakeningRatio, 0.0903010033444816 AbsIntAvgWeakeningVarsNumRemoved, 72.11705685618729 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 2 MinimizatonAttempts, 315 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 462 NumberOfCodeBlocks, 462 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 459 ConstructedInterpolants, 0 QuantifiedInterpolants, 557395 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 126/213 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown