java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./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/underapprox1.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 14:19:36,024 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 14:19:36,026 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 14:19:36,039 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 14:19:36,039 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 14:19:36,040 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 14:19:36,041 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 14:19:36,050 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 14:19:36,052 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 14:19:36,053 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 14:19:36,054 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 14:19:36,054 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 14:19:36,055 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 14:19:36,056 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 14:19:36,058 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 14:19:36,061 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 14:19:36,062 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 14:19:36,064 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 14:19:36,066 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 14:19:36,067 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 14:19:36,068 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 14:19:36,069 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 14:19:36,072 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 14:19:36,072 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 14:19:36,072 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 14:19:36,073 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 14:19:36,074 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 14:19:36,075 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 14:19:36,076 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 14:19:36,077 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 14:19:36,077 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 14:19:36,078 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-25 14:19:36,078 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-25 14:19:36,078 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-25 14:19:36,079 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-25 14:19:36,080 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-25 14:19:36,080 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-pdr-z3.epf [2018-07-25 14:19:36,088 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 14:19:36,089 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 14:19:36,090 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 14:19:36,090 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=PDR [2018-07-25 14:19:36,091 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-25 14:19:36,091 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-07-25 14:19:36,091 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 14:19:36,134 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 14:19:36,148 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 14:19:36,152 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 14:19:36,154 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 14:19:36,154 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 14:19:36,155 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/underapprox1.i_3.bpl [2018-07-25 14:19:36,156 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/underapprox1.i_3.bpl' [2018-07-25 14:19:36,203 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 14:19:36,204 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 14:19:36,205 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 14:19:36,206 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 14:19:36,206 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 14:19:36,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "underapprox1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:19:36" (1/1) ... [2018-07-25 14:19:36,240 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "underapprox1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:19:36" (1/1) ... [2018-07-25 14:19:36,248 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 14:19:36,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 14:19:36,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 14:19:36,250 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 14:19:36,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "underapprox1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:19:36" (1/1) ... [2018-07-25 14:19:36,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "underapprox1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:19:36" (1/1) ... [2018-07-25 14:19:36,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "underapprox1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:19:36" (1/1) ... [2018-07-25 14:19:36,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "underapprox1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:19:36" (1/1) ... [2018-07-25 14:19:36,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "underapprox1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:19:36" (1/1) ... [2018-07-25 14:19:36,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "underapprox1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:19:36" (1/1) ... [2018-07-25 14:19:36,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "underapprox1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:19:36" (1/1) ... [2018-07-25 14:19:36,270 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 14:19:36,271 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 14:19:36,271 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 14:19:36,271 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 14:19:36,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "underapprox1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:19:36" (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 [2018-07-25 14:19:36,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 14:19:36,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 14:19:36,675 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 14:19:36,676 INFO L202 PluginConnector]: Adding new model underapprox1.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 02:19:36 BoogieIcfgContainer [2018-07-25 14:19:36,676 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 14:19:36,677 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 14:19:36,677 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 14:19:36,684 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 14:19:36,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "underapprox1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:19:36" (1/2) ... [2018-07-25 14:19:36,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ec85ccd and model type underapprox1.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 02:19:36, skipping insertion in model container [2018-07-25 14:19:36,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "underapprox1.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 02:19:36" (2/2) ... [2018-07-25 14:19:36,689 INFO L112 eAbstractionObserver]: Analyzing ICFG underapprox1.i_3.bpl [2018-07-25 14:19:36,700 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:PDR Determinization: PREDICATE_ABSTRACTION [2018-07-25 14:19:36,707 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 14:19:36,750 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 14:19:36,751 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 14:19:36,751 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 14:19:36,751 INFO L376 AbstractCegarLoop]: Compute interpolants for PDR [2018-07-25 14:19:36,751 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 14:19:36,751 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 14:19:36,751 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 14:19:36,752 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 14:19:36,752 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 14:19:36,768 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-25 14:19:36,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-25 14:19:36,777 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 14:19:36,778 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-25 14:19:36,780 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 14:19:36,786 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 [2018-07-25 14:19:36,804 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 14:19:37,094 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 14:19:37,095 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-25 14:19:37,099 INFO L451 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-25 14:19:37,104 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-25 14:19:37,105 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 14:19:37,107 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-07-25 14:19:37,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 14:19:37,144 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2018-07-25 14:19:37,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-25 14:19:37,147 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-07-25 14:19:37,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 14:19:37,161 INFO L225 Difference]: With dead ends: 10 [2018-07-25 14:19:37,161 INFO L226 Difference]: Without dead ends: 7 [2018-07-25 14:19:37,165 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 14:19:37,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-07-25 14:19:37,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-07-25 14:19:37,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-25 14:19:37,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-25 14:19:37,201 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-07-25 14:19:37,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 14:19:37,201 INFO L472 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-25 14:19:37,201 INFO L473 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-25 14:19:37,201 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-25 14:19:37,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 14:19:37,202 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 14:19:37,202 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-07-25 14:19:37,203 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 14:19:37,203 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 [2018-07-25 14:19:37,218 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 14:19:38,118 WARN L169 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2018-07-25 14:19:39,167 WARN L169 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2018-07-25 14:19:39,466 WARN L169 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2018-07-25 14:19:51,495 ERROR L403 Pdr]: Internal query 456#(and (not (and (<= 6 (mod (+ ULTIMATE.start_main_~x~4 3) 4294967296)) (< (mod (+ ULTIMATE.start_main_~x~4 2) 4294967296) 6) (= 0 (ite (not (= 64 (mod (* 8 ULTIMATE.start_main_~y~4) 4294967296))) 1 0)))) (not (and (<= 6 (mod ULTIMATE.start_main_~x~4 4294967296)) (= 0 (ite (not (= (mod ULTIMATE.start_main_~y~4 4294967296) 64)) 1 0)))) (not (and (<= 6 (mod (+ ULTIMATE.start_main_~x~4 2) 4294967296)) (< (mod (+ ULTIMATE.start_main_~x~4 1) 4294967296) 6) (= (ite (not (= (mod (* 4 ULTIMATE.start_main_~y~4) 4294967296) 64)) 1 0) 0))) (not (and (<= 6 (mod (+ ULTIMATE.start_main_~x~4 1) 4294967296)) (= (ite (not (= 64 (mod (* 2 ULTIMATE.start_main_~y~4) 4294967296))) 1 0) 0) (< (mod ULTIMATE.start_main_~x~4 4294967296) 6)))) && assume !!(main_~x~4 % 4294967296 < 6);main_#t~post0 := main_~x~4;main_~x~4 := main_#t~post0 + 1;havoc main_#t~post0;main_~y~4 := main_~y~4 * 2; && 269#(and (<= 6 (mod (+ ULTIMATE.start_main_~x~4 2) 4294967296)) (< (mod (+ ULTIMATE.start_main_~x~4 1) 4294967296) 6) (= (ite (not (= (mod (* 4 ULTIMATE.start_main_~y~4) 4294967296) 64)) 1 0) 0)) was unknown! [2018-07-25 14:19:51,696 WARN L513 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-07-25 14:19:51,698 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:405) at de.uni_freiburg.informatik.ultimate.lib.pdr.Pdr.computePdr(Pdr.java:289) at de.uni_freiburg.informatik.ultimate.lib.pdr.Pdr.(Pdr.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructPdr(TraceCheckConstructor.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.FixedRefinementStrategy.getTraceCheck(FixedRefinementStrategy.java:130) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:220) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:194) 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:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:309) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:151) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:120) 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-07-25 14:19:51,703 INFO L168 Benchmark]: Toolchain (without parser) took 15499.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 118.9 MB). Peak memory consumption was 118.9 MB. Max. memory is 7.1 GB. [2018-07-25 14:19:51,704 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 14:19:51,705 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.47 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 14:19:51,706 INFO L168 Benchmark]: Boogie Preprocessor took 21.02 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 14:19:51,707 INFO L168 Benchmark]: RCFGBuilder took 405.23 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-07-25 14:19:51,707 INFO L168 Benchmark]: TraceAbstraction took 15024.58 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 97.8 MB). Peak memory consumption was 97.8 MB. Max. memory is 7.1 GB. [2018-07-25 14:19:51,712 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.22 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 43.47 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 21.02 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 405.23 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 15024.58 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: 97.8 MB). Peak memory consumption was 97.8 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:405) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/underapprox1.i_3.bpl_AutomizerBpl-pdr-z3.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_14-19-51-732.csv Received shutdown request...