java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/Pdr/AutomizerBpl-pdr-z3.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Sandman01.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ff8eab6 [2018-09-26 09:17:40,395 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-26 09:17:40,398 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-26 09:17:40,417 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-26 09:17:40,417 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-26 09:17:40,419 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-26 09:17:40,420 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-26 09:17:40,423 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-26 09:17:40,425 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-26 09:17:40,428 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-26 09:17:40,431 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-09-26 09:17:40,483 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-pdr-z3.epf [2018-09-26 09:17:40,497 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-26 09:17:40,498 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-26 09:17:40,499 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-26 09:17:40,499 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=PDR [2018-09-26 09:17:40,500 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-26 09:17:40,500 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-09-26 09:17:40,500 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-26 09:17:40,562 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-26 09:17:40,575 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-26 09:17:40,582 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-26 09:17:40,584 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-26 09:17:40,584 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-26 09:17:40,585 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Sandman01.bpl [2018-09-26 09:17:40,585 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Sandman01.bpl' [2018-09-26 09:17:40,629 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-26 09:17:40,632 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-26 09:17:40,635 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-26 09:17:40,635 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-26 09:17:40,635 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-26 09:17:40,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Sandman01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:17:40" (1/1) ... [2018-09-26 09:17:40,669 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Sandman01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:17:40" (1/1) ... [2018-09-26 09:17:40,674 WARN L165 Inliner]: Program contained no entry procedure! [2018-09-26 09:17:40,674 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-09-26 09:17:40,674 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-09-26 09:17:40,677 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-26 09:17:40,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-26 09:17:40,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-26 09:17:40,678 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-26 09:17:40,688 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Sandman01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:17:40" (1/1) ... [2018-09-26 09:17:40,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Sandman01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:17:40" (1/1) ... [2018-09-26 09:17:40,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Sandman01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:17:40" (1/1) ... [2018-09-26 09:17:40,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Sandman01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:17:40" (1/1) ... [2018-09-26 09:17:40,693 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Sandman01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:17:40" (1/1) ... [2018-09-26 09:17:40,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Sandman01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:17:40" (1/1) ... [2018-09-26 09:17:40,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Sandman01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:17:40" (1/1) ... [2018-09-26 09:17:40,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-26 09:17:40,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-26 09:17:40,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-26 09:17:40,700 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-26 09:17:40,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Sandman01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:17:40" (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 [2018-09-26 09:17:40,770 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-09-26 09:17:40,770 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-26 09:17:40,770 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-26 09:17:40,995 INFO L343 CfgBuilder]: Using library mode [2018-09-26 09:17:40,996 INFO L202 PluginConnector]: Adding new model Sandman01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:17:40 BoogieIcfgContainer [2018-09-26 09:17:40,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-26 09:17:40,998 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-26 09:17:40,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-26 09:17:41,003 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-26 09:17:41,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Sandman01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:17:40" (1/2) ... [2018-09-26 09:17:41,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15987b47 and model type Sandman01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.09 09:17:41, skipping insertion in model container [2018-09-26 09:17:41,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Sandman01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:17:40" (2/2) ... [2018-09-26 09:17:41,007 INFO L112 eAbstractionObserver]: Analyzing ICFG Sandman01.bpl [2018-09-26 09:17:41,018 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:PDR Determinization: PREDICATE_ABSTRACTION [2018-09-26 09:17:41,029 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-26 09:17:41,081 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-26 09:17:41,082 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-26 09:17:41,082 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-26 09:17:41,082 INFO L383 AbstractCegarLoop]: Compute interpolants for PDR [2018-09-26 09:17:41,082 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-26 09:17:41,082 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-26 09:17:41,083 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-26 09:17:41,083 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-26 09:17:41,083 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-26 09:17:41,100 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-09-26 09:17:41,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-09-26 09:17:41,117 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 09:17:41,118 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-09-26 09:17:41,120 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 09:17:41,125 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 09:17:41,125 INFO L82 PathProgramCache]: Analyzing trace with hash 30048, now seen corresponding path program 1 times No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-09-26 09:17:41,147 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 09:17:41,320 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-09-26 09:17:41,456 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 09:17:41,456 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-26 09:17:41,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-26 09:17:41,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-26 09:17:41,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-26 09:17:41,468 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2018-09-26 09:17:41,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 09:17:41,551 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2018-09-26 09:17:41,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-26 09:17:41,553 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2018-09-26 09:17:41,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 09:17:41,562 INFO L225 Difference]: With dead ends: 11 [2018-09-26 09:17:41,562 INFO L226 Difference]: Without dead ends: 5 [2018-09-26 09:17:41,566 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-26 09:17:41,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-09-26 09:17:41,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-09-26 09:17:41,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-09-26 09:17:41,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-09-26 09:17:41,598 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-09-26 09:17:41,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 09:17:41,598 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-09-26 09:17:41,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-26 09:17:41,599 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-09-26 09:17:41,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-09-26 09:17:41,599 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 09:17:41,599 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-09-26 09:17:41,600 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 09:17:41,600 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 09:17:41,600 INFO L82 PathProgramCache]: Analyzing trace with hash 927622, now seen corresponding path program 1 times No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-09-26 09:17:41,615 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 09:17:42,095 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-26 09:17:42,638 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-09-26 09:17:43,629 WARN L178 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2018-09-26 09:17:45,722 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2018-09-26 09:17:47,126 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2018-09-26 09:17:51,929 WARN L178 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2018-09-26 09:18:09,954 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2018-09-26 09:19:29,964 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 125 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown