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/nested1.i_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 14:01:25,726 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 14:01:25,729 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 14:01:25,746 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 14:01:25,747 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 14:01:25,749 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 14:01:25,751 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 14:01:25,753 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 14:01:25,755 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 14:01:25,757 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 14:01:25,760 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 14:01:25,760 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 14:01:25,761 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 14:01:25,764 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 14:01:25,765 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 14:01:25,766 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 14:01:25,767 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 14:01:25,774 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 14:01:25,781 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 14:01:25,783 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 14:01:25,786 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 14:01:25,787 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 14:01:25,790 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 14:01:25,790 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 14:01:25,790 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 14:01:25,791 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 14:01:25,795 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 14:01:25,795 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 14:01:25,796 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 14:01:25,800 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 14:01:25,801 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 14:01:25,802 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-25 14:01:25,802 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-25 14:01:25,802 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-25 14:01:25,804 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-25 14:01:25,805 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-25 14:01:25,806 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 14:01:25,817 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 14:01:25,818 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 14:01:25,820 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 14:01:25,820 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=PDR [2018-07-25 14:01:25,821 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-25 14:01:25,821 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-07-25 14:01:25,821 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 14:01:25,874 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 14:01:25,886 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 14:01:25,889 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 14:01:25,890 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 14:01:25,891 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 14:01:25,892 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/nested1.i_4.bpl [2018-07-25 14:01:25,892 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/nested1.i_4.bpl' [2018-07-25 14:01:25,936 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 14:01:25,938 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 14:01:25,939 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 14:01:25,939 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 14:01:25,939 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 14:01:25,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:01:25" (1/1) ... [2018-07-25 14:01:25,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:01:25" (1/1) ... [2018-07-25 14:01:25,978 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 14:01:25,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 14:01:25,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 14:01:25,979 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 14:01:25,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:01:25" (1/1) ... [2018-07-25 14:01:25,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:01:25" (1/1) ... [2018-07-25 14:01:25,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:01:25" (1/1) ... [2018-07-25 14:01:25,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:01:25" (1/1) ... [2018-07-25 14:01:25,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:01:25" (1/1) ... [2018-07-25 14:01:25,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:01:25" (1/1) ... [2018-07-25 14:01:25,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:01:25" (1/1) ... [2018-07-25 14:01:25,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 14:01:25,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 14:01:25,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 14:01:25,999 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 14:01:26,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:01:25" (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 14:01:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 14:01:26,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 14:01:26,260 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 14:01:26,260 INFO L202 PluginConnector]: Adding new model nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 02:01:26 BoogieIcfgContainer [2018-07-25 14:01:26,261 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 14:01:26,262 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 14:01:26,262 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 14:01:26,265 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 14:01:26,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:01:25" (1/2) ... [2018-07-25 14:01:26,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f65786f and model type nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 02:01:26, skipping insertion in model container [2018-07-25 14:01:26,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 02:01:26" (2/2) ... [2018-07-25 14:01:26,269 INFO L112 eAbstractionObserver]: Analyzing ICFG nested1.i_4.bpl [2018-07-25 14:01:26,279 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:PDR Determinization: PREDICATE_ABSTRACTION [2018-07-25 14:01:26,288 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 14:01:26,331 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 14:01:26,332 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 14:01:26,332 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 14:01:26,333 INFO L376 AbstractCegarLoop]: Compute interpolants for PDR [2018-07-25 14:01:26,333 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 14:01:26,333 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 14:01:26,333 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 14:01:26,333 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 14:01:26,334 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 14:01:26,346 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-07-25 14:01:26,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-25 14:01:26,355 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 14:01:26,356 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-25 14:01:26,357 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 14:01:26,362 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 14:01:26,384 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 14:01:26,646 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 14:01:26,646 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-25 14:01:26,650 INFO L451 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-25 14:01:26,655 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-25 14:01:26,656 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 14:01:26,658 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-07-25 14:01:26,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 14:01:26,738 INFO L93 Difference]: Finished difference Result 15 states and 20 transitions. [2018-07-25 14:01:26,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-25 14:01:26,740 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-07-25 14:01:26,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 14:01:26,751 INFO L225 Difference]: With dead ends: 15 [2018-07-25 14:01:26,751 INFO L226 Difference]: Without dead ends: 9 [2018-07-25 14:01:26,755 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 14:01:26,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-25 14:01:26,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-07-25 14:01:26,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 14:01:26,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-07-25 14:01:26,791 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 4 [2018-07-25 14:01:26,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 14:01:26,791 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-07-25 14:01:26,791 INFO L473 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-25 14:01:26,791 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2018-07-25 14:01:26,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 14:01:26,792 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 14:01:26,792 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-07-25 14:01:26,793 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 14:01:26,793 INFO L82 PathProgramCache]: Analyzing trace with hash 209100445, 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 14:01:26,807 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 14:01:27,329 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 14:01:27,330 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 14:01:27,331 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 14:01:27,332 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 14:01:27,332 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-25 14:01:27,332 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 4 states. [2018-07-25 14:01:39,406 WARN L169 SmtUtils]: Spent 12.05 s on a formula simplification that was a NOOP. DAG size: 43 [2018-07-25 14:01:39,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 14:01:39,506 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2018-07-25 14:01:39,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 14:01:39,507 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-07-25 14:01:39,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 14:01:39,508 INFO L225 Difference]: With dead ends: 15 [2018-07-25 14:01:39,508 INFO L226 Difference]: Without dead ends: 13 [2018-07-25 14:01:39,510 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-07-25 14:01:39,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-07-25 14:01:39,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2018-07-25 14:01:39,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-25 14:01:39,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2018-07-25 14:01:39,516 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2018-07-25 14:01:39,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 14:01:39,517 INFO L472 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2018-07-25 14:01:39,517 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 14:01:39,517 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2018-07-25 14:01:39,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-25 14:01:39,518 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 14:01:39,518 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2018-07-25 14:01:39,519 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 14:01:39,519 INFO L82 PathProgramCache]: Analyzing trace with hash -850198025, now seen corresponding path program 1 times No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-07-25 14:01:39,527 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 14:01:39,826 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-07-25 14:01:51,966 WARN L169 SmtUtils]: Spent 12.05 s on a formula simplification that was a NOOP. DAG size: 27 [2018-07-25 14:01:52,188 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-07-25 14:01:52,499 WARN L169 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2018-07-25 14:01:52,924 WARN L169 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2018-07-25 14:03:08,812 WARN L169 SmtUtils]: Spent 12.14 s on a formula simplification. DAG size of input: 41 DAG size of output: 34 [2018-07-25 14:03:34,342 WARN L1032 $PredicateComparison]: unable to prove that (let ((.cse5 (+ c_ULTIMATE.start_main_~x~4 1))) (let ((.cse3 (mod .cse5 4294967296))) (let ((.cse0 (<= 268435455 .cse3)) (.cse2 (mod c_ULTIMATE.start_main_~y~4 4294967296)) (.cse1 (= (ite (= (mod (let ((.cse4 (mod .cse5 2))) (ite (and (< .cse3 0) (not (= 0 .cse4))) (+ .cse4 (- 2)) .cse4)) 4294967296) 0) 1 0) 0))) (and (not (and .cse0 (<= 10 (mod (+ c_ULTIMATE.start_main_~y~4 3) 4294967296)) .cse1)) (not (and .cse0 (<= 10 (mod (+ c_ULTIMATE.start_main_~y~4 1) 4294967296)) .cse1 (< .cse2 10))) (not (and .cse0 (<= 10 .cse2) .cse1)))))) is different from true [2018-07-25 14:04:01,899 WARN L169 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 34 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown