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/nested1.i_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ff8eab6 [2018-09-26 08:53:57,328 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-26 08:53:57,331 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-26 08:53:57,344 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-26 08:53:57,344 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-26 08:53:57,345 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-26 08:53:57,346 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-26 08:53:57,348 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-26 08:53:57,350 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-26 08:53:57,351 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-26 08:53:57,352 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-26 08:53:57,352 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-26 08:53:57,353 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-26 08:53:57,354 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-26 08:53:57,355 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-26 08:53:57,356 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-26 08:53:57,357 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-26 08:53:57,358 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-26 08:53:57,360 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-26 08:53:57,362 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-26 08:53:57,363 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-26 08:53:57,364 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-26 08:53:57,367 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-26 08:53:57,375 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 08:53:57,383 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-26 08:53:57,383 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-26 08:53:57,384 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-26 08:53:57,385 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=PDR [2018-09-26 08:53:57,385 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-26 08:53:57,385 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-09-26 08:53:57,385 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-26 08:53:57,445 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-26 08:53:57,460 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-26 08:53:57,464 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-26 08:53:57,465 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-26 08:53:57,466 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-26 08:53:57,467 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/nested1.i_4.bpl [2018-09-26 08:53:57,467 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/nested1.i_4.bpl' [2018-09-26 08:53:57,523 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-26 08:53:57,530 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-26 08:53:57,530 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-26 08:53:57,531 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-26 08:53:57,531 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-26 08:53:57,552 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 26.09 08:53:57" (1/1) ... [2018-09-26 08:53:57,564 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 26.09 08:53:57" (1/1) ... [2018-09-26 08:53:57,572 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-26 08:53:57,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-26 08:53:57,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-26 08:53:57,573 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-26 08:53:57,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:53:57" (1/1) ... [2018-09-26 08:53:57,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:53:57" (1/1) ... [2018-09-26 08:53:57,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:53:57" (1/1) ... [2018-09-26 08:53:57,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:53:57" (1/1) ... [2018-09-26 08:53:57,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:53:57" (1/1) ... [2018-09-26 08:53:57,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:53:57" (1/1) ... [2018-09-26 08:53:57,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:53:57" (1/1) ... [2018-09-26 08:53:57,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-26 08:53:57,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-26 08:53:57,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-26 08:53:57,594 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-26 08:53:57,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:53:57" (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 08:53:57,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-26 08:53:57,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-26 08:53:57,955 INFO L346 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-26 08:53:57,955 INFO L202 PluginConnector]: Adding new model nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 08:53:57 BoogieIcfgContainer [2018-09-26 08:53:57,956 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-26 08:53:57,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-26 08:53:57,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-26 08:53:57,960 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-26 08:53:57,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:53:57" (1/2) ... [2018-09-26 08:53:57,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b4e051 and model type nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.09 08:53:57, skipping insertion in model container [2018-09-26 08:53:57,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 08:53:57" (2/2) ... [2018-09-26 08:53:57,964 INFO L112 eAbstractionObserver]: Analyzing ICFG nested1.i_4.bpl [2018-09-26 08:53:57,975 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:PDR Determinization: PREDICATE_ABSTRACTION [2018-09-26 08:53:57,987 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-26 08:53:58,042 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-26 08:53:58,043 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-26 08:53:58,043 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-26 08:53:58,047 INFO L383 AbstractCegarLoop]: Compute interpolants for PDR [2018-09-26 08:53:58,048 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-26 08:53:58,048 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-26 08:53:58,048 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-26 08:53:58,048 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-26 08:53:58,049 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-26 08:53:58,067 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-09-26 08:53:58,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-09-26 08:53:58,080 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 08:53:58,081 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-09-26 08:53:58,083 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 08:53:58,089 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 08:53:58,091 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 08:53:58,116 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 08:53:58,466 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 08:53:58,466 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-26 08:53:58,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-26 08:53:58,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-26 08:53:58,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-26 08:53:58,480 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-09-26 08:53:58,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 08:53:58,543 INFO L93 Difference]: Finished difference Result 15 states and 20 transitions. [2018-09-26 08:53:58,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-26 08:53:58,545 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-09-26 08:53:58,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 08:53:58,557 INFO L225 Difference]: With dead ends: 15 [2018-09-26 08:53:58,558 INFO L226 Difference]: Without dead ends: 9 [2018-09-26 08:53:58,561 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-26 08:53:58,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-09-26 08:53:58,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-09-26 08:53:58,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-09-26 08:53:58,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-09-26 08:53:58,600 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 4 [2018-09-26 08:53:58,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 08:53:58,600 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-09-26 08:53:58,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-26 08:53:58,601 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2018-09-26 08:53:58,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-26 08:53:58,601 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 08:53:58,601 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-09-26 08:53:58,602 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 08:53:58,602 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 08:53:58,602 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 [2018-09-26 08:53:58,615 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 08:53:59,184 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 08:53:59,184 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-26 08:53:59,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-26 08:53:59,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-26 08:53:59,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-26 08:53:59,186 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 4 states. [2018-09-26 08:54:11,285 WARN L178 SmtUtils]: Spent 12.05 s on a formula simplification that was a NOOP. DAG size: 43 [2018-09-26 08:54:11,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 08:54:11,540 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2018-09-26 08:54:11,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-26 08:54:11,544 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-09-26 08:54:11,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 08:54:11,545 INFO L225 Difference]: With dead ends: 15 [2018-09-26 08:54:11,545 INFO L226 Difference]: Without dead ends: 13 [2018-09-26 08:54:11,547 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-09-26 08:54:11,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-09-26 08:54:11,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2018-09-26 08:54:11,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-09-26 08:54:11,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2018-09-26 08:54:11,553 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2018-09-26 08:54:11,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 08:54:11,554 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2018-09-26 08:54:11,554 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-26 08:54:11,554 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2018-09-26 08:54:11,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-26 08:54:11,555 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 08:54:11,556 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2018-09-26 08:54:11,556 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 08:54:11,557 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 08:54:11,557 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 [2018-09-26 08:54:11,565 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 08:54:36,529 WARN L178 SmtUtils]: Spent 24.22 s on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2018-09-26 08:54:52,926 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 34 [2018-09-26 08:55:58,298 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 34 [2018-09-26 08:57:50,724 WARN L854 $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 1) 4294967296)) .cse1 (< .cse2 10))) (not (and (<= 10 (mod (+ c_ULTIMATE.start_main_~y~4 4) 4294967296)) .cse0 .cse1)) (not (and .cse0 (<= 10 .cse2) .cse1)))))) is different from true Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown