java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/nested9.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 19:50:49,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 19:50:49,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 19:50:49,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-03 19:50:49,517 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-03 19:50:49,518 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-03 19:50:49,519 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-03 19:50:49,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-03 19:50:49,522 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-03 19:50:49,523 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-03 19:50:49,524 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-03 19:50:49,525 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-03 19:50:49,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 19:50:49,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 19:50:49,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 19:50:49,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 19:50:49,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 19:50:49,530 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 19:50:49,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 19:50:49,535 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 19:50:49,537 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 19:50:49,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 19:50:49,539 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 19:50:49,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 19:50:49,543 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-03 19:50:49,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 19:50:49,552 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 19:50:49,553 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 19:50:49,554 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-03 19:50:49,584 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 19:50:49,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 19:50:49,588 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-03 19:50:49,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-03 19:50:49,589 INFO L138 SettingsManager]: * Use SBE=true [2019-09-03 19:50:49,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 19:50:49,589 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 19:50:49,589 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-03 19:50:49,589 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 19:50:49,590 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 19:50:49,590 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 19:50:49,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 19:50:49,591 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 19:50:49,591 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 19:50:49,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 19:50:49,592 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-03 19:50:49,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 19:50:49,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 19:50:49,592 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 19:50:49,593 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-03 19:50:49,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-03 19:50:49,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 19:50:49,594 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 19:50:49,594 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 19:50:49,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-03 19:50:49,595 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-03 19:50:49,595 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 19:50:49,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 19:50:49,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-03 19:50:49,642 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 19:50:49,658 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 19:50:49,661 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 19:50:49,663 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 19:50:49,663 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 19:50:49,664 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested9.i [2019-09-03 19:50:49,721 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/467613b60/d710eb8a2ca947bfb8dbee129f0aeadb/FLAG810a42637 [2019-09-03 19:50:50,082 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 19:50:50,082 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nested9.i [2019-09-03 19:50:50,088 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/467613b60/d710eb8a2ca947bfb8dbee129f0aeadb/FLAG810a42637 [2019-09-03 19:50:50,524 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/467613b60/d710eb8a2ca947bfb8dbee129f0aeadb [2019-09-03 19:50:50,539 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 19:50:50,540 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 19:50:50,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 19:50:50,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 19:50:50,545 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 19:50:50,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 07:50:50" (1/1) ... [2019-09-03 19:50:50,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69ab725e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:50:50, skipping insertion in model container [2019-09-03 19:50:50,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 07:50:50" (1/1) ... [2019-09-03 19:50:50,555 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 19:50:50,569 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 19:50:50,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 19:50:50,773 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 19:50:50,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 19:50:50,819 INFO L192 MainTranslator]: Completed translation [2019-09-03 19:50:50,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:50:50 WrapperNode [2019-09-03 19:50:50,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 19:50:50,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 19:50:50,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 19:50:50,822 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 19:50:50,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:50:50" (1/1) ... [2019-09-03 19:50:50,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:50:50" (1/1) ... [2019-09-03 19:50:50,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:50:50" (1/1) ... [2019-09-03 19:50:50,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:50:50" (1/1) ... [2019-09-03 19:50:50,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:50:50" (1/1) ... [2019-09-03 19:50:50,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:50:50" (1/1) ... [2019-09-03 19:50:50,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:50:50" (1/1) ... [2019-09-03 19:50:50,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 19:50:50,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 19:50:50,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 19:50:50,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 19:50:50,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:50:50" (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:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 19:50:51,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 19:50:51,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 19:50:51,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-03 19:50:51,034 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 19:50:51,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 19:50:51,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-03 19:50:51,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 19:50:51,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-03 19:50:51,036 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 19:50:51,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 19:50:51,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 19:50:51,311 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 19:50:51,311 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-09-03 19:50:51,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 07:50:51 BoogieIcfgContainer [2019-09-03 19:50:51,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 19:50:51,325 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 19:50:51,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 19:50:51,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 19:50:51,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 07:50:50" (1/3) ... [2019-09-03 19:50:51,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f84f225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 07:50:51, skipping insertion in model container [2019-09-03 19:50:51,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:50:50" (2/3) ... [2019-09-03 19:50:51,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f84f225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 07:50:51, skipping insertion in model container [2019-09-03 19:50:51,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 07:50:51" (3/3) ... [2019-09-03 19:50:51,338 INFO L109 eAbstractionObserver]: Analyzing ICFG nested9.i [2019-09-03 19:50:51,361 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 19:50:51,372 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 19:50:51,396 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 19:50:51,436 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-03 19:50:51,437 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 19:50:51,439 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-03 19:50:51,439 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 19:50:51,439 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 19:50:51,439 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 19:50:51,439 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 19:50:51,440 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 19:50:51,440 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 19:50:51,465 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-09-03 19:50:51,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-03 19:50:51,472 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:50:51,473 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:50:51,476 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:50:51,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:50:51,484 INFO L82 PathProgramCache]: Analyzing trace with hash -810471198, now seen corresponding path program 1 times [2019-09-03 19:50:51,486 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:50:51,486 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:50:51,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:50:51,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:50:51,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:50:51,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:50:51,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 19:50:51,775 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 19:50:51,775 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-03 19:50:51,780 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-03 19:50:51,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-03 19:50:51,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-03 19:50:51,796 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 7 states. [2019-09-03 19:50:52,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:50:52,062 INFO L93 Difference]: Finished difference Result 68 states and 95 transitions. [2019-09-03 19:50:52,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-03 19:50:52,064 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2019-09-03 19:50:52,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:50:52,074 INFO L225 Difference]: With dead ends: 68 [2019-09-03 19:50:52,074 INFO L226 Difference]: Without dead ends: 36 [2019-09-03 19:50:52,077 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-09-03 19:50:52,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-09-03 19:50:52,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2019-09-03 19:50:52,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-09-03 19:50:52,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2019-09-03 19:50:52,115 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 18 [2019-09-03 19:50:52,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:50:52,116 INFO L475 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2019-09-03 19:50:52,116 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-03 19:50:52,116 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2019-09-03 19:50:52,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-09-03 19:50:52,118 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:50:52,118 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:50:52,118 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:50:52,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:50:52,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1204298207, now seen corresponding path program 1 times [2019-09-03 19:50:52,119 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:50:52,120 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:50:52,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:50:52,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:50:52,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:50:52,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:50:52,200 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-03 19:50:52,204 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 19:50:52,204 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-03 19:50:52,205 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-03 19:50:52,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-03 19:50:52,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-03 19:50:52,208 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 4 states. [2019-09-03 19:50:52,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:50:52,268 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2019-09-03 19:50:52,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-03 19:50:52,269 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2019-09-03 19:50:52,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:50:52,273 INFO L225 Difference]: With dead ends: 52 [2019-09-03 19:50:52,273 INFO L226 Difference]: Without dead ends: 33 [2019-09-03 19:50:52,277 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-03 19:50:52,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-09-03 19:50:52,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2019-09-03 19:50:52,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-09-03 19:50:52,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2019-09-03 19:50:52,295 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 25 [2019-09-03 19:50:52,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:50:52,295 INFO L475 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2019-09-03 19:50:52,295 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-03 19:50:52,296 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2019-09-03 19:50:52,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-09-03 19:50:52,298 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:50:52,298 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:50:52,299 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:50:52,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:50:52,299 INFO L82 PathProgramCache]: Analyzing trace with hash 2040308290, now seen corresponding path program 1 times [2019-09-03 19:50:52,299 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:50:52,299 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:50:52,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:50:52,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:50:52,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:50:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:50:52,406 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 19:50:52,406 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 19:50:52,407 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-03 19:50:52,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-03 19:50:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:50:52,450 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-03 19:50:52,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 19:50:52,555 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe [2019-09-03 19:50:52,562 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-03 19:50:52,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2019-09-03 19:50:52,563 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-03 19:50:52,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-03 19:50:52,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-09-03 19:50:52,564 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 10 states. [2019-09-03 19:50:52,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:50:52,820 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2019-09-03 19:50:52,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-03 19:50:52,822 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2019-09-03 19:50:52,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:50:52,824 INFO L225 Difference]: With dead ends: 65 [2019-09-03 19:50:52,824 INFO L226 Difference]: Without dead ends: 46 [2019-09-03 19:50:52,827 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2019-09-03 19:50:52,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-09-03 19:50:52,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2019-09-03 19:50:52,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-09-03 19:50:52,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2019-09-03 19:50:52,855 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 28 [2019-09-03 19:50:52,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:50:52,856 INFO L475 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2019-09-03 19:50:52,856 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-03 19:50:52,856 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2019-09-03 19:50:52,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-09-03 19:50:52,860 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:50:52,860 INFO L399 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:50:52,861 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:50:52,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:50:52,861 INFO L82 PathProgramCache]: Analyzing trace with hash 911329064, now seen corresponding path program 1 times [2019-09-03 19:50:52,861 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:50:52,861 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:50:52,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:50:52,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:50:52,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:50:52,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:50:52,992 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-09-03 19:50:52,992 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 19:50:52,993 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-03 19:50:53,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-03 19:50:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:50:53,037 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-03 19:50:53,039 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 19:50:53,114 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-03 19:50:53,118 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-03 19:50:53,119 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2019-09-03 19:50:53,119 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-03 19:50:53,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-03 19:50:53,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2019-09-03 19:50:53,120 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 12 states. [2019-09-03 19:50:53,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:50:53,455 INFO L93 Difference]: Finished difference Result 70 states and 85 transitions. [2019-09-03 19:50:53,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-03 19:50:53,455 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2019-09-03 19:50:53,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:50:53,456 INFO L225 Difference]: With dead ends: 70 [2019-09-03 19:50:53,456 INFO L226 Difference]: Without dead ends: 0 [2019-09-03 19:50:53,457 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2019-09-03 19:50:53,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-03 19:50:53,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-03 19:50:53,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-03 19:50:53,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-03 19:50:53,457 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2019-09-03 19:50:53,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:50:53,458 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-03 19:50:53,458 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-03 19:50:53,458 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-03 19:50:53,458 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-03 19:50:53,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-03 19:50:53,741 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-09-03 19:50:53,741 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-09-03 19:50:53,741 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-03 19:50:53,741 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-03 19:50:53,742 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-03 19:50:53,742 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-03 19:50:53,742 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-03 19:50:53,742 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 11 26) no Hoare annotation was computed. [2019-09-03 19:50:53,743 INFO L439 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 (* 2 main_~n~0)))) (and (<= (+ main_~i~0 1) main_~n~0) (<= (+ main_~j~0 3) .cse0) (<= 1 main_~i~0) (<= (* 2 main_~i~0) main_~j~0) (<= (+ main_~k~0 4) .cse0))) [2019-09-03 19:50:53,743 INFO L443 ceAbstractionStarter]: For program point L23-1(lines 22 23) no Hoare annotation was computed. [2019-09-03 19:50:53,743 INFO L443 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2019-09-03 19:50:53,743 INFO L443 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2019-09-03 19:50:53,743 INFO L446 ceAbstractionStarter]: At program point L24(lines 11 26) the Hoare annotation is: true [2019-09-03 19:50:53,743 INFO L443 ceAbstractionStarter]: For program point L20-2(lines 20 23) no Hoare annotation was computed. [2019-09-03 19:50:53,744 INFO L439 ceAbstractionStarter]: At program point L20-3(lines 20 23) the Hoare annotation is: (let ((.cse0 (<= 0 main_~i~0))) (or (and .cse0 (<= main_~j~0 (* 2 main_~i~0)) (<= main_~i~0 1)) (and .cse0 (<= (+ main_~k~0 4) (+ main_~i~0 (* 2 main_~n~0)))) (and .cse0 (<= main_~i~0 0)))) [2019-09-03 19:50:53,744 INFO L443 ceAbstractionStarter]: For program point L16(line 16) no Hoare annotation was computed. [2019-09-03 19:50:53,744 INFO L443 ceAbstractionStarter]: For program point L21-2(lines 21 23) no Hoare annotation was computed. [2019-09-03 19:50:53,744 INFO L439 ceAbstractionStarter]: At program point L21-3(lines 21 23) the Hoare annotation is: (let ((.cse4 (* 2 main_~i~0))) (let ((.cse3 (+ main_~i~0 (* 2 main_~n~0))) (.cse1 (<= 1 main_~i~0)) (.cse2 (<= .cse4 main_~j~0)) (.cse0 (<= main_~j~0 .cse4))) (or (and (<= (* 3 main_~i~0) main_~j~0) (<= 0 main_~i~0) .cse0 (<= 1 main_~n~0)) (and (<= (+ main_~i~0 1) main_~n~0) .cse1 .cse2 (<= (+ main_~k~0 3) .cse3)) (and (<= (+ main_~j~0 3) .cse3) .cse1 .cse2 .cse0 (<= main_~i~0 1))))) [2019-09-03 19:50:53,745 INFO L443 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2019-09-03 19:50:53,745 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 11 26) no Hoare annotation was computed. [2019-09-03 19:50:53,745 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 11 26) the Hoare annotation is: true [2019-09-03 19:50:53,745 INFO L439 ceAbstractionStarter]: At program point L22-2(lines 22 23) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 (* 2 main_~n~0)))) (and (<= (+ main_~i~0 1) main_~n~0) (<= (+ main_~j~0 3) .cse0) (<= 1 main_~i~0) (<= (* 2 main_~i~0) main_~j~0) (<= (+ main_~k~0 3) .cse0))) [2019-09-03 19:50:53,745 INFO L443 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2019-09-03 19:50:53,746 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-09-03 19:50:53,746 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-09-03 19:50:53,746 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-09-03 19:50:53,746 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-09-03 19:50:53,746 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-09-03 19:50:53,747 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-09-03 19:50:53,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.09 07:50:53 BoogieIcfgContainer [2019-09-03 19:50:53,764 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-03 19:50:53,767 INFO L168 Benchmark]: Toolchain (without parser) took 3225.26 ms. Allocated memory was 140.0 MB in the beginning and 222.3 MB in the end (delta: 82.3 MB). Free memory was 87.4 MB in the beginning and 79.7 MB in the end (delta: 7.7 MB). Peak memory consumption was 90.0 MB. Max. memory is 7.1 GB. [2019-09-03 19:50:53,767 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 140.0 MB. Free memory is still 105.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-03 19:50:53,768 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.52 ms. Allocated memory is still 140.0 MB. Free memory was 87.4 MB in the beginning and 77.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-09-03 19:50:53,769 INFO L168 Benchmark]: Boogie Preprocessor took 149.05 ms. Allocated memory was 140.0 MB in the beginning and 197.1 MB in the end (delta: 57.1 MB). Free memory was 77.8 MB in the beginning and 174.1 MB in the end (delta: -96.3 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2019-09-03 19:50:53,770 INFO L168 Benchmark]: RCFGBuilder took 348.72 ms. Allocated memory is still 197.1 MB. Free memory was 174.1 MB in the beginning and 160.9 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2019-09-03 19:50:53,771 INFO L168 Benchmark]: TraceAbstraction took 2439.10 ms. Allocated memory was 197.1 MB in the beginning and 222.3 MB in the end (delta: 25.2 MB). Free memory was 160.0 MB in the beginning and 79.7 MB in the end (delta: 80.2 MB). Peak memory consumption was 105.4 MB. Max. memory is 7.1 GB. [2019-09-03 19:50:53,775 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 140.0 MB. Free memory is still 105.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 280.52 ms. Allocated memory is still 140.0 MB. Free memory was 87.4 MB in the beginning and 77.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 149.05 ms. Allocated memory was 140.0 MB in the beginning and 197.1 MB in the end (delta: 57.1 MB). Free memory was 77.8 MB in the beginning and 174.1 MB in the end (delta: -96.3 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 348.72 ms. Allocated memory is still 197.1 MB. Free memory was 174.1 MB in the beginning and 160.9 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2439.10 ms. Allocated memory was 197.1 MB in the beginning and 222.3 MB in the end (delta: 25.2 MB). Free memory was 160.0 MB in the beginning and 79.7 MB in the end (delta: 80.2 MB). Peak memory consumption was 105.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (((0 <= i && j <= 2 * i) && i <= 1) || (0 <= i && k + 4 <= i + 2 * n)) || (0 <= i && i <= 0) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((((3 * i <= j && 0 <= i) && j <= 2 * i) && 1 <= n) || (((i + 1 <= n && 1 <= i) && 2 * i <= j) && k + 3 <= i + 2 * n)) || ((((j + 3 <= i + 2 * n && 1 <= i) && 2 * i <= j) && j <= 2 * i) && i <= 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (((i + 1 <= n && j + 3 <= i + 2 * n) && 1 <= i) && 2 * i <= j) && k + 3 <= i + 2 * n - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 29 locations, 1 error locations. SAFE Result, 2.3s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 90 SDtfs, 95 SDslu, 354 SDs, 0 SdLazy, 340 SolverSat, 69 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=3, 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, 4 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 20 PreInvPairs, 41 NumberOfFragments, 170 HoareAnnotationTreeSize, 20 FomulaSimplifications, 576 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 169 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 167 NumberOfCodeBlocks, 167 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 161 ConstructedInterpolants, 0 QuantifiedInterpolants, 10079 SizeOfPredicates, 6 NumberOfNonLiveVariables, 150 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 42/48 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...