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/Problem17_label06_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:05:32,872 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:05:32,874 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:05:32,893 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:05:32,893 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:05:32,894 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:05:32,898 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:05:32,900 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:05:32,912 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:05:32,915 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:05:32,918 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:05:32,918 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:05:32,919 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:05:32,920 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:05:32,923 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:05:32,925 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:05:32,925 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:05:32,935 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:05:32,938 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:05:32,942 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:05:32,943 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:05:32,946 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:05:32,953 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 22:05:32,968 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 22:05:32,995 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:05:32,996 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:05:32,997 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:05:32,997 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:05:32,998 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:05:32,998 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:05:32,998 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:05:32,998 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:05:32,998 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:05:32,999 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:05:32,999 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:05:32,999 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:05:33,001 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:05:33,001 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:05:33,001 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:05:33,001 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:05:33,001 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:05:33,002 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:05:33,003 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:05:33,003 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:05:33,003 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:05:33,003 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:05:33,003 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:05:33,004 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:05:33,004 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:05:33,004 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:05:33,004 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:05:33,004 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:05:33,005 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:05:33,005 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:05:33,005 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:05:33,005 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:05:33,006 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:05:33,006 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:05:33,074 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:05:33,089 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:05:33,092 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:05:33,094 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:05:33,094 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:05:33,095 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label06_true-unreach-call.c [2018-10-24 22:05:33,154 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/84bbd58e8/f9b1ddaaf420491d89054bbd88720f64/FLAGe6fdd9146 [2018-10-24 22:05:33,849 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:05:33,850 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label06_true-unreach-call.c [2018-10-24 22:05:33,876 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/84bbd58e8/f9b1ddaaf420491d89054bbd88720f64/FLAGe6fdd9146 [2018-10-24 22:05:33,895 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/84bbd58e8/f9b1ddaaf420491d89054bbd88720f64 [2018-10-24 22:05:33,908 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:05:33,910 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:05:33,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:05:33,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:05:33,914 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:05:33,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:05:33" (1/1) ... [2018-10-24 22:05:33,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31cb433d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:05:33, skipping insertion in model container [2018-10-24 22:05:33,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:05:33" (1/1) ... [2018-10-24 22:05:33,930 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:05:34,048 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:05:35,173 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:05:35,177 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:05:35,606 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:05:35,628 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:05:35,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:05:35 WrapperNode [2018-10-24 22:05:35,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:05:35,630 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:05:35,630 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:05:35,630 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:05:35,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:05:35" (1/1) ... [2018-10-24 22:05:35,690 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:05:35" (1/1) ... [2018-10-24 22:05:36,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:05:36,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:05:36,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:05:36,141 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:05:36,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:05:35" (1/1) ... [2018-10-24 22:05:36,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:05:35" (1/1) ... [2018-10-24 22:05:36,179 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:05:35" (1/1) ... [2018-10-24 22:05:36,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:05:35" (1/1) ... [2018-10-24 22:05:36,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:05:35" (1/1) ... [2018-10-24 22:05:36,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:05:35" (1/1) ... [2018-10-24 22:05:36,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:05:35" (1/1) ... [2018-10-24 22:05:36,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:05:36,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:05:36,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:05:36,434 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:05:36,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:05:35" (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 22:05:36,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:05:36,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:05:36,498 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 22:05:36,498 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 22:05:36,498 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:05:36,498 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:05:36,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:05:36,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:05:36,499 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:05:36,499 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:05:48,866 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:05:48,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:05:48 BoogieIcfgContainer [2018-10-24 22:05:48,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:05:48,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:05:48,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:05:48,873 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:05:48,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:05:33" (1/3) ... [2018-10-24 22:05:48,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9acdce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:05:48, skipping insertion in model container [2018-10-24 22:05:48,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:05:35" (2/3) ... [2018-10-24 22:05:48,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9acdce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:05:48, skipping insertion in model container [2018-10-24 22:05:48,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:05:48" (3/3) ... [2018-10-24 22:05:48,877 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label06_true-unreach-call.c [2018-10-24 22:05:48,887 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:05:48,896 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:05:48,914 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:05:48,957 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:05:48,958 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:05:48,958 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:05:48,958 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:05:48,958 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:05:48,958 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:05:48,959 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:05:48,959 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:05:48,996 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-24 22:05:49,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-24 22:05:49,007 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:05:49,008 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] [2018-10-24 22:05:49,010 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:05:49,016 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:05:49,016 INFO L82 PathProgramCache]: Analyzing trace with hash 2116554596, now seen corresponding path program 1 times [2018-10-24 22:05:49,018 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:05:49,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:05:49,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:05:49,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:05:49,069 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:05:49,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:05:49,491 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-24 22:05:49,515 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 22:05:49,517 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:05:49,517 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:05:49,518 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:05:49,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:05:49,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:05:49,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:05:49,545 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-24 22:06:00,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:06:00,233 INFO L93 Difference]: Finished difference Result 2137 states and 3966 transitions. [2018-10-24 22:06:00,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:06:00,235 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2018-10-24 22:06:00,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:06:00,282 INFO L225 Difference]: With dead ends: 2137 [2018-10-24 22:06:00,282 INFO L226 Difference]: Without dead ends: 1527 [2018-10-24 22:06:00,295 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:06:00,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1527 states. [2018-10-24 22:06:00,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1527 to 1513. [2018-10-24 22:06:00,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1513 states. [2018-10-24 22:06:00,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 2344 transitions. [2018-10-24 22:06:00,468 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 2344 transitions. Word has length 38 [2018-10-24 22:06:00,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:06:00,468 INFO L481 AbstractCegarLoop]: Abstraction has 1513 states and 2344 transitions. [2018-10-24 22:06:00,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:06:00,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 2344 transitions. [2018-10-24 22:06:00,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-24 22:06:00,475 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:06:00,476 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:06:00,476 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:06:00,476 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:06:00,476 INFO L82 PathProgramCache]: Analyzing trace with hash 2036710450, now seen corresponding path program 1 times [2018-10-24 22:06:00,477 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:06:00,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:06:00,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:06:00,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:06:00,478 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:06:00,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:06:00,805 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:06:00,805 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:06:00,806 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 22:06:00,806 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:06:00,808 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 22:06:00,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 22:06:00,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 22:06:00,808 INFO L87 Difference]: Start difference. First operand 1513 states and 2344 transitions. Second operand 5 states. [2018-10-24 22:06:10,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:06:10,199 INFO L93 Difference]: Finished difference Result 4413 states and 7007 transitions. [2018-10-24 22:06:10,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:06:10,201 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2018-10-24 22:06:10,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:06:10,225 INFO L225 Difference]: With dead ends: 4413 [2018-10-24 22:06:10,226 INFO L226 Difference]: Without dead ends: 2906 [2018-10-24 22:06:10,232 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:06:10,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2018-10-24 22:06:10,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 2873. [2018-10-24 22:06:10,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2873 states. [2018-10-24 22:06:10,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 4204 transitions. [2018-10-24 22:06:10,347 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 4204 transitions. Word has length 110 [2018-10-24 22:06:10,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:06:10,348 INFO L481 AbstractCegarLoop]: Abstraction has 2873 states and 4204 transitions. [2018-10-24 22:06:10,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 22:06:10,348 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 4204 transitions. [2018-10-24 22:06:10,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-24 22:06:10,357 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:06:10,358 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:06:10,358 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:06:10,358 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:06:10,358 INFO L82 PathProgramCache]: Analyzing trace with hash -493194566, now seen corresponding path program 1 times [2018-10-24 22:06:10,358 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:06:10,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:06:10,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:06:10,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:06:10,362 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:06:10,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:06:10,663 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:06:10,663 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:06:10,664 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:06:10,665 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 114 with the following transitions: [2018-10-24 22:06:10,667 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], [914], [916], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [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] [2018-10-24 22:06:10,756 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:06:10,756 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:06:12,223 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:06:32,532 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:06:32,534 INFO L272 AbstractInterpreter]: Visited 82 different actions 538 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 22:06:32,564 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:06:32,564 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:06:34,483 INFO L232 lantSequenceWeakener]: Weakened 3 states. On average, predicates are now at 86.11% of their original sizes. [2018-10-24 22:06:34,484 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:07:00,754 INFO L413 sIntCurrentIteration]: We have 112 unified AI predicates [2018-10-24 22:07:00,754 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:07:00,755 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:07:00,755 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [7] total 25 [2018-10-24 22:07:00,755 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:07:00,757 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-24 22:07:00,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-24 22:07:00,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2018-10-24 22:07:00,758 INFO L87 Difference]: Start difference. First operand 2873 states and 4204 transitions. Second operand 20 states. Received shutdown request... [2018-10-24 22:09:44,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-24 22:09:44,336 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:09:44,341 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:09:44,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:09:44 BoogieIcfgContainer [2018-10-24 22:09:44,341 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:09:44,342 INFO L168 Benchmark]: Toolchain (without parser) took 250433.29 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 561.1 MB. Max. memory is 7.1 GB. [2018-10-24 22:09:44,343 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 22:09:44,343 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1718.85 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. [2018-10-24 22:09:44,344 INFO L168 Benchmark]: Boogie Procedure Inliner took 510.56 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 770.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -919.3 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. [2018-10-24 22:09:44,345 INFO L168 Benchmark]: Boogie Preprocessor took 293.15 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: 29.6 MB). Peak memory consumption was 29.6 MB. Max. memory is 7.1 GB. [2018-10-24 22:09:44,346 INFO L168 Benchmark]: RCFGBuilder took 12434.84 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: 474.4 MB). Peak memory consumption was 474.4 MB. Max. memory is 7.1 GB. [2018-10-24 22:09:44,347 INFO L168 Benchmark]: TraceAbstraction took 235471.27 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 3.5 GB in the end (delta: -1.8 GB). Peak memory consumption was 68.2 MB. Max. memory is 7.1 GB. [2018-10-24 22:09:44,352 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 1718.85 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 510.56 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 770.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -919.3 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 293.15 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: 29.6 MB). Peak memory consumption was 29.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12434.84 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: 474.4 MB). Peak memory consumption was 474.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 235471.27 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 3.5 GB in the end (delta: -1.8 GB). Peak memory consumption was 68.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 101). Cancelled while BasicCegarLoop was constructing difference of abstraction (2873states) and FLOYD_HOARE automaton (currently 21 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (763 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 235.3s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 183.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 803 SDtfs, 4506 SDslu, 601 SDs, 0 SdLazy, 6269 SolverSat, 1690 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 71.4s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 137 GetRequests, 91 SyntacticMatches, 10 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 33.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2873occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 21.9s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9920467032967034 AbsIntWeakeningRatio, 0.1875 AbsIntAvgWeakeningVarsNumRemoved, 848.2142857142857 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 2 MinimizatonAttempts, 47 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 261 NumberOfCodeBlocks, 261 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 258 ConstructedInterpolants, 0 QuantifiedInterpolants, 89636 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 31/62 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown