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/20170304-DifficultPathPrograms/simple4.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ff8eab6 [2018-09-26 09:07:23,822 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-26 09:07:23,823 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-26 09:07:23,835 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-26 09:07:23,835 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-26 09:07:23,836 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-26 09:07:23,838 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-26 09:07:23,839 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-26 09:07:23,841 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-26 09:07:23,842 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-26 09:07:23,843 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-26 09:07:23,843 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-26 09:07:23,844 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-26 09:07:23,845 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-26 09:07:23,850 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-26 09:07:23,852 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-26 09:07:23,853 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-26 09:07:23,857 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-26 09:07:23,860 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-26 09:07:23,865 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-26 09:07:23,866 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-26 09:07:23,870 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-26 09:07:23,876 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-26 09:07:23,876 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-26 09:07:23,876 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-26 09:07:23,877 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-26 09:07:23,881 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-26 09:07:23,882 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-26 09:07:23,883 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-26 09:07:23,886 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-26 09:07:23,886 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-26 09:07:23,888 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-26 09:07:23,888 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-26 09:07:23,888 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-26 09:07:23,890 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-26 09:07:23,891 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-26 09:07:23,891 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 09:07:23,903 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-26 09:07:23,903 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-26 09:07:23,904 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-26 09:07:23,904 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=PDR [2018-09-26 09:07:23,905 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-26 09:07:23,905 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-09-26 09:07:23,905 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-26 09:07:23,967 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-26 09:07:23,980 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-26 09:07:23,983 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-26 09:07:23,985 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-26 09:07:23,985 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-26 09:07:23,986 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/simple4.i_3.bpl [2018-09-26 09:07:23,986 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/simple4.i_3.bpl' [2018-09-26 09:07:24,042 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-26 09:07:24,045 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-26 09:07:24,046 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-26 09:07:24,046 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-26 09:07:24,046 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-26 09:07:24,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "simple4.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:07:24" (1/1) ... [2018-09-26 09:07:24,077 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "simple4.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:07:24" (1/1) ... [2018-09-26 09:07:24,084 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-26 09:07:24,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-26 09:07:24,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-26 09:07:24,086 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-26 09:07:24,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "simple4.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:07:24" (1/1) ... [2018-09-26 09:07:24,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "simple4.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:07:24" (1/1) ... [2018-09-26 09:07:24,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "simple4.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:07:24" (1/1) ... [2018-09-26 09:07:24,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "simple4.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:07:24" (1/1) ... [2018-09-26 09:07:24,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "simple4.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:07:24" (1/1) ... [2018-09-26 09:07:24,102 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "simple4.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:07:24" (1/1) ... [2018-09-26 09:07:24,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "simple4.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:07:24" (1/1) ... [2018-09-26 09:07:24,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-26 09:07:24,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-26 09:07:24,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-26 09:07:24,106 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-26 09:07:24,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "simple4.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:07:24" (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 09:07:24,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-26 09:07:24,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-26 09:07:24,433 INFO L346 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-26 09:07:24,434 INFO L202 PluginConnector]: Adding new model simple4.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:07:24 BoogieIcfgContainer [2018-09-26 09:07:24,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-26 09:07:24,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-26 09:07:24,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-26 09:07:24,439 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-26 09:07:24,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "simple4.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:07:24" (1/2) ... [2018-09-26 09:07:24,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e33e3ee and model type simple4.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.09 09:07:24, skipping insertion in model container [2018-09-26 09:07:24,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "simple4.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:07:24" (2/2) ... [2018-09-26 09:07:24,444 INFO L112 eAbstractionObserver]: Analyzing ICFG simple4.i_3.bpl [2018-09-26 09:07:24,455 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:PDR Determinization: PREDICATE_ABSTRACTION [2018-09-26 09:07:24,467 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-26 09:07:24,527 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-26 09:07:24,528 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-26 09:07:24,528 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-26 09:07:24,528 INFO L383 AbstractCegarLoop]: Compute interpolants for PDR [2018-09-26 09:07:24,529 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-26 09:07:24,529 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-26 09:07:24,529 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-26 09:07:24,529 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-26 09:07:24,529 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-26 09:07:24,551 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-09-26 09:07:24,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-09-26 09:07:24,564 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 09:07:24,565 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-09-26 09:07:24,566 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 09:07:24,574 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 09:07:24,575 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, 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 09:07:24,603 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 09:07:25,059 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 09:07:25,060 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-26 09:07:25,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-26 09:07:25,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-26 09:07:25,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-26 09:07:25,075 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-09-26 09:07:25,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 09:07:25,133 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2018-09-26 09:07:25,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-26 09:07:25,135 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-09-26 09:07:25,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 09:07:25,147 INFO L225 Difference]: With dead ends: 10 [2018-09-26 09:07:25,148 INFO L226 Difference]: Without dead ends: 7 [2018-09-26 09:07:25,152 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-26 09:07:25,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-09-26 09:07:25,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-09-26 09:07:25,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-09-26 09:07:25,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-09-26 09:07:25,191 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-09-26 09:07:25,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 09:07:25,191 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-09-26 09:07:25,192 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-26 09:07:25,192 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-09-26 09:07:25,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-09-26 09:07:25,192 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 09:07:25,193 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-09-26 09:07:25,193 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 09:07:25,193 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 09:07:25,194 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, 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 09:07:25,213 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 09:08:13,586 WARN L178 SmtUtils]: Spent 48.17 s on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2018-09-26 09:08:25,626 WARN L854 $PredicateComparison]: unable to prove that (not (let ((.cse1 (mod (+ c_ULTIMATE.start_main_~x~4 4294967294) 4294967296))) (and (= 0 (ite (= (mod (let ((.cse0 (mod c_ULTIMATE.start_main_~x~4 2))) (ite (and (not (= 0 .cse0)) (< .cse1 0)) (+ .cse0 (- 2)) .cse0)) 4294967296) 0) 1 0)) (<= .cse1 1)))) is different from true [2018-09-26 09:09:13,882 WARN L178 SmtUtils]: Spent 48.20 s on a formula simplification that was a NOOP. DAG size: 35 [2018-09-26 09:09:13,899 ERROR L410 Pdr]: Internal query 122#(not (and (= (ite (= (mod (ite (and (not (= 0 (mod ULTIMATE.start_main_~x~4 2))) (< (mod ULTIMATE.start_main_~x~4 4294967296) 0)) (+ (mod ULTIMATE.start_main_~x~4 2) (- 2)) (mod ULTIMATE.start_main_~x~4 2)) 4294967296) 0) 1 0) 0) (<= (mod ULTIMATE.start_main_~x~4 4294967296) 1))) && assume true; && 167#(and (= 0 (ite (= (mod (ite (and (not (= 0 (mod ULTIMATE.start_main_~x~4 2))) (< (mod (+ ULTIMATE.start_main_~x~4 4294967294) 4294967296) 0)) (+ (mod ULTIMATE.start_main_~x~4 2) (- 2)) (mod ULTIMATE.start_main_~x~4 2)) 4294967296) 0) 1 0)) (<= (mod (+ ULTIMATE.start_main_~x~4 4294967294) 4294967296) 1)) was unknown! [2018-09-26 09:09:14,102 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-09-26 09:09:14,104 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Solver returned unknown at de.uni_freiburg.informatik.ultimate.lib.pdr.Pdr.blockingPhase(Pdr.java:412) at de.uni_freiburg.informatik.ultimate.lib.pdr.Pdr.computePdr(Pdr.java:291) at de.uni_freiburg.informatik.ultimate.lib.pdr.Pdr.(Pdr.java:199) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructPdr(TraceCheckConstructor.java:274) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.FixedRefinementStrategy.getTraceCheck(FixedRefinementStrategy.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:375) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:313) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-09-26 09:09:14,108 INFO L168 Benchmark]: Toolchain (without parser) took 110066.11 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: 87.2 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. [2018-09-26 09:09:14,110 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-26 09:09:14,111 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.05 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-26 09:09:14,112 INFO L168 Benchmark]: Boogie Preprocessor took 19.56 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-26 09:09:14,112 INFO L168 Benchmark]: RCFGBuilder took 329.01 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-26 09:09:14,113 INFO L168 Benchmark]: TraceAbstraction took 109672.48 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: 66.1 MB). Peak memory consumption was 66.1 MB. Max. memory is 7.1 GB. [2018-09-26 09:09:14,118 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 39.05 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 19.56 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 329.01 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 109672.48 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: 66.1 MB). Peak memory consumption was 66.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Solver returned unknown de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Solver returned unknown: de.uni_freiburg.informatik.ultimate.lib.pdr.Pdr.blockingPhase(Pdr.java:412) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/simple4.i_3.bpl_AutomizerBpl-pdr-z3.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-26_09-09-14-139.csv Received shutdown request...