java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/programs/regression/bpl/AutomizerBpl-pdr.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/diamond1.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-56c9370 [2018-07-23 15:53:37,903 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 15:53:37,905 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 15:53:37,925 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 15:53:37,925 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 15:53:37,926 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 15:53:37,927 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 15:53:37,929 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 15:53:37,931 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 15:53:37,932 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 15:53:37,933 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 15:53:37,933 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 15:53:37,934 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 15:53:37,935 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 15:53:37,936 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 15:53:37,937 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 15:53:37,938 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 15:53:37,940 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 15:53:37,945 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 15:53:37,947 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 15:53:37,948 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 15:53:37,949 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 15:53:37,955 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 15:53:37,955 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 15:53:37,955 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 15:53:37,959 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 15:53:37,960 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 15:53:37,961 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 15:53:37,961 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 15:53:37,962 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 15:53:37,963 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 15:53:37,963 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-23 15:53:37,963 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 15:53:37,964 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 15:53:37,965 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 15:53:37,965 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 15:53:37,966 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/regression/bpl/AutomizerBpl-pdr.epf [2018-07-23 15:53:37,975 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 15:53:37,975 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 15:53:37,976 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 15:53:37,977 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=PDR [2018-07-23 15:53:37,977 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-23 15:53:37,977 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 15:53:38,021 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 15:53:38,038 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 15:53:38,044 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 15:53:38,046 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-23 15:53:38,046 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-23 15:53:38,047 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/diamond1.i_3.bpl [2018-07-23 15:53:38,048 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/diamond1.i_3.bpl' [2018-07-23 15:53:38,110 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 15:53:38,111 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-07-23 15:53:38,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 15:53:38,112 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 15:53:38,113 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 15:53:38,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "diamond1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:53:38" (1/1) ... [2018-07-23 15:53:38,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "diamond1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:53:38" (1/1) ... [2018-07-23 15:53:38,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "diamond1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:53:38" (1/1) ... [2018-07-23 15:53:38,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "diamond1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:53:38" (1/1) ... [2018-07-23 15:53:38,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "diamond1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:53:38" (1/1) ... [2018-07-23 15:53:38,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "diamond1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:53:38" (1/1) ... [2018-07-23 15:53:38,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "diamond1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:53:38" (1/1) ... [2018-07-23 15:53:38,169 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 15:53:38,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 15:53:38,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 15:53:38,176 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 15:53:38,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "diamond1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:53:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-07-23 15:53:38,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 15:53:38,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 15:53:38,550 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 15:53:38,551 INFO L202 PluginConnector]: Adding new model diamond1.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:53:38 BoogieIcfgContainer [2018-07-23 15:53:38,552 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 15:53:38,553 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 15:53:38,553 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 15:53:38,558 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 15:53:38,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "diamond1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:53:38" (1/2) ... [2018-07-23 15:53:38,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32c2c9a6 and model type diamond1.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 03:53:38, skipping insertion in model container [2018-07-23 15:53:38,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "diamond1.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:53:38" (2/2) ... [2018-07-23 15:53:38,563 INFO L112 eAbstractionObserver]: Analyzing ICFG diamond1.i_3.bpl [2018-07-23 15:53:38,575 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:PDR Determinization: PREDICATE_ABSTRACTION [2018-07-23 15:53:38,588 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 15:53:38,644 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 15:53:38,645 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 15:53:38,646 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 15:53:38,646 INFO L375 AbstractCegarLoop]: Compute interpolants for PDR [2018-07-23 15:53:38,646 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 15:53:38,646 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 15:53:38,647 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 15:53:38,647 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 15:53:38,647 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 15:53:38,666 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-23 15:53:38,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-23 15:53:38,677 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:53:38,678 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-23 15:53:38,678 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:53:38,683 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-07-23 15:53:38,689 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:53:38,998 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:53:38,999 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-23 15:53:39,004 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 15:53:39,011 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 15:53:39,011 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-23 15:53:39,014 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-07-23 15:53:39,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:53:39,063 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2018-07-23 15:53:39,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 15:53:39,066 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-07-23 15:53:39,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:53:39,079 INFO L225 Difference]: With dead ends: 10 [2018-07-23 15:53:39,079 INFO L226 Difference]: Without dead ends: 7 [2018-07-23 15:53:39,083 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-23 15:53:39,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-07-23 15:53:39,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-07-23 15:53:39,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-23 15:53:39,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-23 15:53:39,121 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-07-23 15:53:39,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:53:39,122 INFO L471 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-23 15:53:39,122 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 15:53:39,122 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-23 15:53:39,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:53:39,123 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:53:39,123 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-07-23 15:53:39,123 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:53:39,123 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2018-07-23 15:53:39,124 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:54:39,563 WARN L169 SmtUtils]: Spent 1.00 m on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2018-07-23 15:55:03,714 WARN L169 SmtUtils]: Spent 24.11 s on a formula simplification that was a NOOP. DAG size: 35 [2018-07-23 15:55:15,851 WARN L169 SmtUtils]: Spent 12.09 s on a formula simplification that was a NOOP. DAG size: 50 [2018-07-23 15:55:40,215 WARN L169 SmtUtils]: Spent 24.15 s on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2018-07-23 15:56:16,418 WARN L169 SmtUtils]: Spent 24.08 s on a formula simplification that was a NOOP. DAG size: 36 [2018-07-23 15:58:16,802 WARN L169 SmtUtils]: Spent 2.01 m on a formula simplification. DAG size of input: 63 DAG size of output: 63 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown