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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label27_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 01:58:49,036 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 01:58:49,038 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 01:58:49,050 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 01:58:49,050 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 01:58:49,051 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 01:58:49,052 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 01:58:49,054 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 01:58:49,056 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 01:58:49,057 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 01:58:49,058 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 01:58:49,058 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 01:58:49,059 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 01:58:49,060 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 01:58:49,061 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 01:58:49,062 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 01:58:49,063 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 01:58:49,065 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 01:58:49,067 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 01:58:49,068 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 01:58:49,069 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 01:58:49,071 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 01:58:49,075 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-25 01:58:49,092 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 01:58:49,124 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 01:58:49,124 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 01:58:49,125 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 01:58:49,126 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 01:58:49,126 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 01:58:49,126 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 01:58:49,126 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 01:58:49,126 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 01:58:49,127 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 01:58:49,130 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 01:58:49,130 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 01:58:49,130 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 01:58:49,130 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 01:58:49,131 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 01:58:49,131 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 01:58:49,132 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 01:58:49,132 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 01:58:49,132 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 01:58:49,132 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 01:58:49,132 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 01:58:49,133 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 01:58:49,133 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 01:58:49,133 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 01:58:49,133 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 01:58:49,133 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 01:58:49,133 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 01:58:49,135 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 01:58:49,136 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 01:58:49,136 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 01:58:49,136 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 01:58:49,136 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 01:58:49,136 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 01:58:49,136 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 01:58:49,137 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 01:58:49,137 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 01:58:49,138 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 01:58:49,197 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 01:58:49,214 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 01:58:49,220 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 01:58:49,222 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 01:58:49,222 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 01:58:49,223 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label27_true-unreach-call.c [2018-10-25 01:58:49,287 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cf308b50f/1f8cb239cc094d1aa42ab6777904ebef/FLAG6f9141d3d [2018-10-25 01:58:49,987 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 01:58:49,988 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label27_true-unreach-call.c [2018-10-25 01:58:50,013 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cf308b50f/1f8cb239cc094d1aa42ab6777904ebef/FLAG6f9141d3d [2018-10-25 01:58:50,029 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cf308b50f/1f8cb239cc094d1aa42ab6777904ebef [2018-10-25 01:58:50,041 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 01:58:50,043 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 01:58:50,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 01:58:50,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 01:58:50,049 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 01:58:50,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:58:50" (1/1) ... [2018-10-25 01:58:50,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a444982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:50, skipping insertion in model container [2018-10-25 01:58:50,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:58:50" (1/1) ... [2018-10-25 01:58:50,065 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 01:58:50,200 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 01:58:51,204 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:58:51,209 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 01:58:51,616 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:58:51,642 INFO L193 MainTranslator]: Completed translation [2018-10-25 01:58:51,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:51 WrapperNode [2018-10-25 01:58:51,643 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 01:58:51,644 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 01:58:51,644 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 01:58:51,644 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 01:58:51,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:51" (1/1) ... [2018-10-25 01:58:51,726 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:51" (1/1) ... [2018-10-25 01:58:52,143 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 01:58:52,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 01:58:52,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 01:58:52,144 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 01:58:52,157 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:51" (1/1) ... [2018-10-25 01:58:52,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:51" (1/1) ... [2018-10-25 01:58:52,198 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:51" (1/1) ... [2018-10-25 01:58:52,198 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:51" (1/1) ... [2018-10-25 01:58:52,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:51" (1/1) ... [2018-10-25 01:58:52,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:51" (1/1) ... [2018-10-25 01:58:52,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:51" (1/1) ... [2018-10-25 01:58:52,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 01:58:52,381 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 01:58:52,381 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 01:58:52,382 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 01:58:52,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:51" (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 [2018-10-25 01:58:52,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 01:58:52,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 01:58:52,447 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-25 01:58:52,447 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-25 01:58:52,448 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 01:58:52,448 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 01:58:52,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 01:58:52,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 01:58:52,448 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 01:58:52,449 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 01:59:02,471 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 01:59:02,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:59:02 BoogieIcfgContainer [2018-10-25 01:59:02,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 01:59:02,474 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 01:59:02,474 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 01:59:02,477 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 01:59:02,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 01:58:50" (1/3) ... [2018-10-25 01:59:02,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a898e19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:59:02, skipping insertion in model container [2018-10-25 01:59:02,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:51" (2/3) ... [2018-10-25 01:59:02,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a898e19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:59:02, skipping insertion in model container [2018-10-25 01:59:02,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:59:02" (3/3) ... [2018-10-25 01:59:02,481 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label27_true-unreach-call.c [2018-10-25 01:59:02,491 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 01:59:02,501 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 01:59:02,520 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 01:59:02,575 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 01:59:02,575 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 01:59:02,575 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 01:59:02,575 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 01:59:02,575 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 01:59:02,576 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 01:59:02,576 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 01:59:02,576 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 01:59:02,621 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-25 01:59:02,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-25 01:59:02,629 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:59:02,630 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] [2018-10-25 01:59:02,632 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:59:02,637 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:59:02,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1584552652, now seen corresponding path program 1 times [2018-10-25 01:59:02,640 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:59:02,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:59:02,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:59:02,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:59:02,693 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:59:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:59:03,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:59:03,144 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:59:03,144 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:59:03,144 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:59:03,150 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:59:03,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:59:03,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:59:03,169 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-25 01:59:13,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:59:13,963 INFO L93 Difference]: Finished difference Result 2133 states and 3959 transitions. [2018-10-25 01:59:13,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:59:13,965 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2018-10-25 01:59:13,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:59:14,001 INFO L225 Difference]: With dead ends: 2133 [2018-10-25 01:59:14,002 INFO L226 Difference]: Without dead ends: 1523 [2018-10-25 01:59:14,011 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 [2018-10-25 01:59:14,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2018-10-25 01:59:14,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1516. [2018-10-25 01:59:14,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1516 states. [2018-10-25 01:59:14,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 2287 transitions. [2018-10-25 01:59:14,153 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 2287 transitions. Word has length 48 [2018-10-25 01:59:14,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:59:14,154 INFO L481 AbstractCegarLoop]: Abstraction has 1516 states and 2287 transitions. [2018-10-25 01:59:14,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:59:14,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 2287 transitions. [2018-10-25 01:59:14,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-25 01:59:14,162 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:59:14,163 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] [2018-10-25 01:59:14,163 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:59:14,163 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:59:14,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1770043202, now seen corresponding path program 1 times [2018-10-25 01:59:14,164 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:59:14,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:59:14,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:59:14,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:59:14,166 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:59:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:59:14,569 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:59:14,569 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:59:14,569 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:59:14,570 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 124 with the following transitions: [2018-10-25 01:59:14,572 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [994], [996], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:59:14,618 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:59:14,619 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:59:16,582 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:59:16,584 INFO L272 AbstractInterpreter]: Visited 83 different actions 235 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-25 01:59:16,628 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:59:16,630 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:59:16,630 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:59:16,630 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:59:16,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:59:16,653 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:59:16,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:59:16,750 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:59:21,428 WARN L179 SmtUtils]: Spent 4.12 s on a formula simplification that was a NOOP. DAG size: 42 [2018-10-25 01:59:23,792 WARN L179 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 42 DAG size of output: 21 [2018-10-25 01:59:23,967 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:59:23,967 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:59:25,280 WARN L179 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 25 [2018-10-25 01:59:25,679 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:59:25,714 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-25 01:59:25,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-10-25 01:59:25,714 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:59:25,719 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:59:25,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:59:25,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-10-25 01:59:25,723 INFO L87 Difference]: Start difference. First operand 1516 states and 2287 transitions. Second operand 6 states. Received shutdown request... [2018-10-25 02:03:24,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 02:03:24,025 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 02:03:24,031 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 02:03:24,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 02:03:24 BoogieIcfgContainer [2018-10-25 02:03:24,033 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 02:03:24,035 INFO L168 Benchmark]: Toolchain (without parser) took 273993.08 ms. Allocated memory was 1.5 GB in the beginning and 2.7 GB in the end (delta: 1.1 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -913.4 MB). Peak memory consumption was 209.7 MB. Max. memory is 7.1 GB. [2018-10-25 02:03:24,036 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. [2018-10-25 02:03:24,037 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1599.31 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-25 02:03:24,039 INFO L168 Benchmark]: Boogie Procedure Inliner took 500.00 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 790.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -943.0 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-25 02:03:24,041 INFO L168 Benchmark]: Boogie Preprocessor took 237.03 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. [2018-10-25 02:03:24,042 INFO L168 Benchmark]: RCFGBuilder took 10091.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 485.5 MB). Peak memory consumption was 485.5 MB. Max. memory is 7.1 GB. [2018-10-25 02:03:24,044 INFO L168 Benchmark]: TraceAbstraction took 261559.92 ms. Allocated memory was 2.3 GB in the beginning and 2.7 GB in the end (delta: 332.9 MB). Free memory was 1.7 GB in the beginning and 2.3 GB in the end (delta: -621.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-25 02:03:24,052 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 1599.31 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 500.00 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 790.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -943.0 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 237.03 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10091.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 485.5 MB). Peak memory consumption was 485.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 261559.92 ms. Allocated memory was 2.3 GB in the beginning and 2.7 GB in the end (delta: 332.9 MB). Free memory was 1.7 GB in the beginning and 2.3 GB in the end (delta: -621.2 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 131). Cancelled while BasicCegarLoop was constructing difference of abstraction (1516states) and FLOYD_HOARE automaton (currently 6 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (3760 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 261.4s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 249.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1039 SDtfs, 2850 SDslu, 488 SDs, 0 SdLazy, 5286 SolverSat, 2008 SolverUnsat, 106 SolverUnknown, 0 SolverNotchecked, 245.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 260 GetRequests, 244 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 8.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1516occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.0s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 1 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 9.5s InterpolantComputationTime, 294 NumberOfCodeBlocks, 294 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 413 ConstructedInterpolants, 122 QuantifiedInterpolants, 561295 SizeOfPredicates, 3 NumberOfNonLiveVariables, 274 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 45/123 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown