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-nestedInterpolants.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 08:49:05,905 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 08:49:05,907 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 08:49:05,919 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 08:49:05,919 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 08:49:05,921 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 08:49:05,922 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 08:49:05,924 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 08:49:05,925 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 08:49:05,926 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 08:49:05,927 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 08:49:05,927 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 08:49:05,928 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 08:49:05,929 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 08:49:05,930 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 08:49:05,931 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 08:49:05,932 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 08:49:05,934 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 08:49:05,936 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 08:49:05,937 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 08:49:05,938 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 08:49:05,940 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 08:49:05,942 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 08:49:05,942 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 08:49:05,943 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 08:49:05,943 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 08:49:05,944 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 08:49:05,945 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 08:49:05,946 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 08:49:05,947 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 08:49:05,947 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 08:49:05,948 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-25 08:49:05,951 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 08:49:05,965 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 08:49:05,965 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 08:49:05,966 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 08:49:05,967 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 08:49:05,967 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 08:49:05,967 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 08:49:05,967 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 08:49:05,967 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 08:49:06,014 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 08:49:06,037 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 08:49:06,044 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 08:49:06,046 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 08:49:06,047 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 08:49:06,047 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl [2018-07-25 08:49:06,047 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl' [2018-07-25 08:49:06,152 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 08:49:06,154 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 08:49:06,154 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 08:49:06,155 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 08:49:06,155 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 08:49:06,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:06" (1/1) ... [2018-07-25 08:49:06,197 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:06" (1/1) ... [2018-07-25 08:49:06,206 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 08:49:06,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 08:49:06,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 08:49:06,208 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 08:49:06,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:06" (1/1) ... [2018-07-25 08:49:06,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:06" (1/1) ... [2018-07-25 08:49:06,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:06" (1/1) ... [2018-07-25 08:49:06,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:06" (1/1) ... [2018-07-25 08:49:06,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:06" (1/1) ... [2018-07-25 08:49:06,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:06" (1/1) ... [2018-07-25 08:49:06,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:06" (1/1) ... [2018-07-25 08:49:06,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 08:49:06,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 08:49:06,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 08:49:06,269 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 08:49:06,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:06" (1/1) ... [2018-07-25 08:49:06,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 08:49:06,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 08:49:07,143 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 08:49:07,144 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:49:07 BoogieIcfgContainer [2018-07-25 08:49:07,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 08:49:07,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 08:49:07,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 08:49:07,149 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 08:49:07,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:06" (1/2) ... [2018-07-25 08:49:07,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@541a2cda and model type pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 08:49:07, skipping insertion in model container [2018-07-25 08:49:07,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:49:07" (2/2) ... [2018-07-25 08:49:07,153 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl [2018-07-25 08:49:07,163 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 08:49:07,172 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 08:49:07,219 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 08:49:07,219 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 08:49:07,220 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 08:49:07,220 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 08:49:07,220 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 08:49:07,220 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 08:49:07,220 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 08:49:07,221 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 08:49:07,221 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 08:49:07,234 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-25 08:49:07,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-25 08:49:07,242 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:07,243 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-25 08:49:07,245 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:07,250 INFO L82 PathProgramCache]: Analyzing trace with hash 990345, now seen corresponding path program 1 times [2018-07-25 08:49:07,257 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:07,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:07,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:07,403 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:49:07,403 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 08:49:07,408 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 08:49:07,423 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 08:49:07,424 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:49:07,426 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2018-07-25 08:49:07,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:07,491 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-07-25 08:49:07,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 08:49:07,493 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-07-25 08:49:07,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:07,513 INFO L225 Difference]: With dead ends: 11 [2018-07-25 08:49:07,513 INFO L226 Difference]: Without dead ends: 8 [2018-07-25 08:49:07,518 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:49:07,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-25 08:49:07,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2018-07-25 08:49:07,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-25 08:49:07,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-25 08:49:07,557 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-07-25 08:49:07,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:07,558 INFO L472 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-25 08:49:07,558 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 08:49:07,558 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-25 08:49:07,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 08:49:07,559 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:07,559 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-07-25 08:49:07,560 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:07,560 INFO L82 PathProgramCache]: Analyzing trace with hash 951799901, now seen corresponding path program 1 times [2018-07-25 08:49:07,560 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:07,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:07,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:07,688 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:07,689 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 08:49:07,694 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 08:49:07,697 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 08:49:07,698 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:49:07,698 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2018-07-25 08:49:07,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:07,809 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-07-25 08:49:07,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 08:49:07,809 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2018-07-25 08:49:07,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:07,810 INFO L225 Difference]: With dead ends: 12 [2018-07-25 08:49:07,811 INFO L226 Difference]: Without dead ends: 10 [2018-07-25 08:49:07,813 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:49:07,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-07-25 08:49:07,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2018-07-25 08:49:07,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 08:49:07,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-07-25 08:49:07,819 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-07-25 08:49:07,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:07,819 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-07-25 08:49:07,820 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 08:49:07,820 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-07-25 08:49:07,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 08:49:07,821 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:07,821 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-07-25 08:49:07,821 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:07,822 INFO L82 PathProgramCache]: Analyzing trace with hash -148250831, now seen corresponding path program 2 times [2018-07-25 08:49:07,822 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:07,968 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:07,969 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:07,969 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:49:07,969 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 08:49:07,970 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 08:49:07,970 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:49:07,974 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 7 states. [2018-07-25 08:49:08,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:08,112 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-07-25 08:49:08,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 08:49:08,113 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2018-07-25 08:49:08,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:08,114 INFO L225 Difference]: With dead ends: 14 [2018-07-25 08:49:08,114 INFO L226 Difference]: Without dead ends: 12 [2018-07-25 08:49:08,115 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:49:08,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-07-25 08:49:08,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2018-07-25 08:49:08,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-25 08:49:08,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-07-25 08:49:08,127 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-07-25 08:49:08,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:08,129 INFO L472 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-07-25 08:49:08,129 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 08:49:08,129 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-07-25 08:49:08,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-25 08:49:08,130 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:08,132 INFO L354 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2018-07-25 08:49:08,132 INFO L415 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:08,133 INFO L82 PathProgramCache]: Analyzing trace with hash -735049467, now seen corresponding path program 3 times [2018-07-25 08:49:08,133 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:08,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:08,378 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:08,378 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:08,379 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:49:08,379 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:49:08,379 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:49:08,380 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:49:08,381 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 8 states. [2018-07-25 08:49:08,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:08,559 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-07-25 08:49:08,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 08:49:08,560 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2018-07-25 08:49:08,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:08,561 INFO L225 Difference]: With dead ends: 16 [2018-07-25 08:49:08,563 INFO L226 Difference]: Without dead ends: 14 [2018-07-25 08:49:08,565 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:49:08,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-07-25 08:49:08,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2018-07-25 08:49:08,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-07-25 08:49:08,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-07-25 08:49:08,571 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-07-25 08:49:08,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:08,571 INFO L472 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-07-25 08:49:08,572 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:49:08,572 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-07-25 08:49:08,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:49:08,572 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:08,573 INFO L354 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1] [2018-07-25 08:49:08,573 INFO L415 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:08,573 INFO L82 PathProgramCache]: Analyzing trace with hash -2007822887, now seen corresponding path program 4 times [2018-07-25 08:49:08,574 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:08,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:08,675 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-07-25 08:49:08,675 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:08,676 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:49:08,676 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:49:08,676 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:49:08,677 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:49:08,677 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 8 states. [2018-07-25 08:49:08,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:08,766 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-07-25 08:49:08,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 08:49:08,767 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2018-07-25 08:49:08,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:08,768 INFO L225 Difference]: With dead ends: 17 [2018-07-25 08:49:08,768 INFO L226 Difference]: Without dead ends: 15 [2018-07-25 08:49:08,769 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:49:08,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-07-25 08:49:08,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-07-25 08:49:08,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-07-25 08:49:08,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-07-25 08:49:08,778 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-07-25 08:49:08,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:08,779 INFO L472 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-07-25 08:49:08,779 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:49:08,779 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-07-25 08:49:08,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 08:49:08,780 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:08,780 INFO L354 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1] [2018-07-25 08:49:08,782 INFO L415 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:08,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1077400147, now seen corresponding path program 5 times [2018-07-25 08:49:08,783 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:08,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:08,926 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-07-25 08:49:08,926 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:08,926 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-25 08:49:08,927 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 08:49:08,927 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 08:49:08,928 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:49:08,928 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 4 states. [2018-07-25 08:49:08,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:08,944 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-07-25 08:49:08,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 08:49:08,948 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-07-25 08:49:08,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:08,948 INFO L225 Difference]: With dead ends: 15 [2018-07-25 08:49:08,949 INFO L226 Difference]: Without dead ends: 0 [2018-07-25 08:49:08,949 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:49:08,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-25 08:49:08,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-25 08:49:08,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-25 08:49:08,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-25 08:49:08,952 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2018-07-25 08:49:08,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:08,952 INFO L472 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-25 08:49:08,953 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 08:49:08,953 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-25 08:49:08,953 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-25 08:49:08,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-25 08:49:09,048 INFO L418 ceAbstractionStarter]: At program point ULTIMATE.startEXIT(lines 74 391) the Hoare annotation is: false [2018-07-25 08:49:09,048 INFO L418 ceAbstractionStarter]: At program point L382(lines 382 389) the Hoare annotation is: false [2018-07-25 08:49:09,048 INFO L422 ceAbstractionStarter]: For program point L283(lines 283 293) no Hoare annotation was computed. [2018-07-25 08:49:09,049 INFO L418 ceAbstractionStarter]: At program point L376(lines 376 383) the Hoare annotation is: (and (<= ~r1 0) (<= 1 ~mode4) (<= 1 ~mode1) (<= ~mode1 1) (<= ~mode3 1) (<= ~mode4 1) (<= 1 ~mode3) (= 1 ULTIMATE.start_assert_~arg) (<= 0 ~r1) (not (= ~p3_old ~nomsg))) [2018-07-25 08:49:09,049 INFO L422 ceAbstractionStarter]: For program point L341(lines 335 342) no Hoare annotation was computed. [2018-07-25 08:49:09,049 INFO L422 ceAbstractionStarter]: For program point L366(lines 361 367) no Hoare annotation was computed. [2018-07-25 08:49:09,049 INFO L422 ceAbstractionStarter]: For program point L298(lines 292 299) no Hoare annotation was computed. [2018-07-25 08:49:09,050 INFO L418 ceAbstractionStarter]: At program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 390) the Hoare annotation is: false [2018-07-25 08:49:09,050 INFO L422 ceAbstractionStarter]: For program point L321(lines 312 322) no Hoare annotation was computed. [2018-07-25 08:49:09,050 INFO L425 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 74 391) the Hoare annotation is: true [2018-07-25 08:49:09,050 INFO L422 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 74 391) no Hoare annotation was computed. [2018-07-25 08:49:09,050 INFO L422 ceAbstractionStarter]: For program point L278(lines 272 279) no Hoare annotation was computed. [2018-07-25 08:49:09,051 INFO L422 ceAbstractionStarter]: For program point L303(lines 303 313) no Hoare annotation was computed. [2018-07-25 08:49:09,051 INFO L422 ceAbstractionStarter]: For program point L262(lines 262 273) no Hoare annotation was computed. [2018-07-25 08:49:09,051 INFO L422 ceAbstractionStarter]: For program point L326(lines 326 336) no Hoare annotation was computed. [2018-07-25 08:49:09,053 INFO L418 ceAbstractionStarter]: At program point L388(lines 255 388) the Hoare annotation is: (let ((.cse0 (<= ~r1 0)) (.cse1 (<= 0 ~r1))) (or (and .cse0 (<= 1 ~mode4) (<= 1 ~mode1) (<= ~mode1 1) (<= ~mode3 1) (<= ~mode4 1) (<= 1 ~mode3) (= 1 ULTIMATE.start_assert_~arg) .cse1 (not (= ~p3_old ~nomsg))) (and .cse0 (<= ~send3 127) (= ~mode3 (* 256 (div ~mode3 256))) (= ~mode1 (* 256 (div ~mode1 256))) (= 0 (+ ~nomsg 1)) (= ~mode4 (* 256 (div ~mode4 256))) (<= 0 ~send3) .cse1))) [2018-07-25 08:49:09,053 INFO L422 ceAbstractionStarter]: For program point L355(lines 355 362) no Hoare annotation was computed. [2018-07-25 08:49:09,066 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 08:49:09 BoogieIcfgContainer [2018-07-25 08:49:09,066 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 08:49:09,068 INFO L168 Benchmark]: Toolchain (without parser) took 2915.02 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 211.4 MB). Peak memory consumption was 211.4 MB. Max. memory is 7.1 GB. [2018-07-25 08:49:09,070 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.16 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:49:09,070 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.53 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:49:09,071 INFO L168 Benchmark]: Boogie Preprocessor took 60.45 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:49:09,074 INFO L168 Benchmark]: RCFGBuilder took 875.61 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-07-25 08:49:09,075 INFO L168 Benchmark]: TraceAbstraction took 1921.02 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: 169.1 MB). Peak memory consumption was 169.1 MB. Max. memory is 7.1 GB. [2018-07-25 08:49:09,082 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 0.16 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 52.53 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 60.45 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 875.61 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1921.02 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: 169.1 MB). Peak memory consumption was 169.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 390]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 255]: Loop Invariant Derived loop invariant: (((((((((~r1 <= 0 && 1 <= ~mode4) && 1 <= ~mode1) && ~mode1 <= 1) && ~mode3 <= 1) && ~mode4 <= 1) && 1 <= ~mode3) && 1 == assert_~arg) && 0 <= ~r1) && !(~p3_old == ~nomsg)) || (((((((~r1 <= 0 && ~send3 <= 127) && ~mode3 == 256 * (~mode3 / 256)) && ~mode1 == 256 * (~mode1 / 256)) && 0 == ~nomsg + 1) && ~mode4 == 256 * (~mode4 / 256)) && 0 <= ~send3) && 0 <= ~r1) - InvariantResult [Line: 382]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 376]: Loop Invariant Derived loop invariant: ((((((((~r1 <= 0 && 1 <= ~mode4) && 1 <= ~mode1) && ~mode1 <= 1) && ~mode3 <= 1) && ~mode4 <= 1) && 1 <= ~mode3) && 1 == assert_~arg) && 0 <= ~r1) && !(~p3_old == ~nomsg) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. SAFE Result, 1.8s OverallTime, 6 OverallIterations, 6 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 18 SDtfs, 21 SDslu, 34 SDs, 0 SdLazy, 107 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 4 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 9 NumberOfFragments, 108 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 12 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 3336 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 1 PerfectInterpolantSequences, 34/70 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_08-49-09-112.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_08-49-09-112.csv Received shutdown request...