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/loops/sum_array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 19:20:55,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 19:20:55,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 19:20:55,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-03 19:20:55,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 19:20:55,505 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 19:20:55,506 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 19:20:55,507 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 19:20:55,508 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 19:20:55,509 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 19:20:55,511 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 19:20:55,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 19:20:55,514 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 19:20:55,515 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 19:20:55,516 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 19:20:55,517 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 19:20:55,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-03 19:20:55,527 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 19:20:55,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 19:20:55,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 19:20:55,529 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 19:20:55,543 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 19:20:55,543 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 19:20:55,545 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-03 19:20:55,545 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-03 19:20:55,545 INFO L138 SettingsManager]: * Use SBE=true [2019-09-03 19:20:55,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 19:20:55,546 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 19:20:55,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-03 19:20:55,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 19:20:55,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 19:20:55,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 19:20:55,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 19:20:55,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 19:20:55,547 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 19:20:55,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 19:20:55,547 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-03 19:20:55,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 19:20:55,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 19:20:55,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 19:20:55,548 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-03 19:20:55,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-03 19:20:55,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 19:20:55,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 19:20:55,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 19:20:55,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-03 19:20:55,549 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-03 19:20:55,549 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 19:20:55,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 19:20:55,550 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-03 19:20:55,577 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 19:20:55,589 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 19:20:55,593 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 19:20:55,594 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 19:20:55,595 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 19:20:55,595 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum_array-1.c [2019-09-03 19:20:55,654 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90cbff740/c7138906892a4cfc9d861e31a07b7b98/FLAG967b723e2 [2019-09-03 19:20:56,095 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 19:20:56,097 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum_array-1.c [2019-09-03 19:20:56,104 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90cbff740/c7138906892a4cfc9d861e31a07b7b98/FLAG967b723e2 [2019-09-03 19:20:56,479 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90cbff740/c7138906892a4cfc9d861e31a07b7b98 [2019-09-03 19:20:56,489 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 19:20:56,491 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 19:20:56,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 19:20:56,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 19:20:56,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 19:20:56,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 07:20:56" (1/1) ... [2019-09-03 19:20:56,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fd7f237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:20:56, skipping insertion in model container [2019-09-03 19:20:56,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 07:20:56" (1/1) ... [2019-09-03 19:20:56,507 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 19:20:56,528 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 19:20:56,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 19:20:56,741 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 19:20:56,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 19:20:56,870 INFO L192 MainTranslator]: Completed translation [2019-09-03 19:20:56,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:20:56 WrapperNode [2019-09-03 19:20:56,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 19:20:56,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 19:20:56,872 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 19:20:56,872 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 19:20:56,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:20:56" (1/1) ... [2019-09-03 19:20:56,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:20:56" (1/1) ... [2019-09-03 19:20:56,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:20:56" (1/1) ... [2019-09-03 19:20:56,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:20:56" (1/1) ... [2019-09-03 19:20:56,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:20:56" (1/1) ... [2019-09-03 19:20:56,908 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:20:56" (1/1) ... [2019-09-03 19:20:56,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:20:56" (1/1) ... [2019-09-03 19:20:56,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 19:20:56,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 19:20:56,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 19:20:56,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 19:20:56,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:20:56" (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 19:20:56,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 19:20:56,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 19:20:56,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-03 19:20:56,979 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 19:20:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 19:20:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-03 19:20:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 19:20:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-09-03 19:20:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 19:20:56,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-03 19:20:56,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-03 19:20:56,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-03 19:20:56,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-03 19:20:56,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 19:20:56,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 19:20:57,295 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 19:20:57,295 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-09-03 19:20:57,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 07:20:57 BoogieIcfgContainer [2019-09-03 19:20:57,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 19:20:57,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 19:20:57,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 19:20:57,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 19:20:57,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 07:20:56" (1/3) ... [2019-09-03 19:20:57,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a835f9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 07:20:57, skipping insertion in model container [2019-09-03 19:20:57,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:20:56" (2/3) ... [2019-09-03 19:20:57,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a835f9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 07:20:57, skipping insertion in model container [2019-09-03 19:20:57,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 07:20:57" (3/3) ... [2019-09-03 19:20:57,304 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_array-1.c [2019-09-03 19:20:57,314 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 19:20:57,322 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 19:20:57,338 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 19:20:57,364 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-03 19:20:57,365 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 19:20:57,365 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-03 19:20:57,365 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 19:20:57,365 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 19:20:57,365 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 19:20:57,366 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 19:20:57,366 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 19:20:57,366 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 19:20:57,382 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-09-03 19:20:57,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-03 19:20:57,388 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:20:57,389 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:20:57,392 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:20:57,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:20:57,397 INFO L82 PathProgramCache]: Analyzing trace with hash 415311520, now seen corresponding path program 1 times [2019-09-03 19:20:57,399 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:20:57,400 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:20:57,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:20:57,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:20:57,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:20:57,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:20:57,537 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 19:20:57,539 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 19:20:57,540 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-03 19:20:57,543 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-03 19:20:57,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-03 19:20:57,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 19:20:57,560 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2019-09-03 19:20:57,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:20:57,585 INFO L93 Difference]: Finished difference Result 52 states and 67 transitions. [2019-09-03 19:20:57,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-03 19:20:57,586 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-09-03 19:20:57,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:20:57,595 INFO L225 Difference]: With dead ends: 52 [2019-09-03 19:20:57,595 INFO L226 Difference]: Without dead ends: 25 [2019-09-03 19:20:57,599 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 19:20:57,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-09-03 19:20:57,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-09-03 19:20:57,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-09-03 19:20:57,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2019-09-03 19:20:57,641 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 17 [2019-09-03 19:20:57,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:20:57,642 INFO L475 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2019-09-03 19:20:57,642 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-03 19:20:57,642 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2019-09-03 19:20:57,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-03 19:20:57,643 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:20:57,643 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:20:57,644 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:20:57,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:20:57,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1687882214, now seen corresponding path program 1 times [2019-09-03 19:20:57,645 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:20:57,645 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:20:57,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:20:57,647 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:20:57,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:20:57,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:20:57,897 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 19:20:57,897 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 19:20:57,897 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-03 19:20:57,899 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-03 19:20:57,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-03 19:20:57,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-03 19:20:57,900 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 4 states. [2019-09-03 19:20:58,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:20:58,071 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2019-09-03 19:20:58,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-03 19:20:58,072 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-09-03 19:20:58,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:20:58,076 INFO L225 Difference]: With dead ends: 57 [2019-09-03 19:20:58,076 INFO L226 Difference]: Without dead ends: 35 [2019-09-03 19:20:58,079 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 19:20:58,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-09-03 19:20:58,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2019-09-03 19:20:58,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-09-03 19:20:58,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2019-09-03 19:20:58,099 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 17 [2019-09-03 19:20:58,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:20:58,100 INFO L475 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2019-09-03 19:20:58,100 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-03 19:20:58,100 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2019-09-03 19:20:58,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-09-03 19:20:58,101 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:20:58,102 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:20:58,102 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:20:58,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:20:58,102 INFO L82 PathProgramCache]: Analyzing trace with hash -825329612, now seen corresponding path program 1 times [2019-09-03 19:20:58,103 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:20:58,103 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:20:58,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:20:58,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:20:58,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:20:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-03 19:20:58,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-03 19:20:58,437 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-03 19:20:58,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.09 07:20:58 BoogieIcfgContainer [2019-09-03 19:20:58,497 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-03 19:20:58,500 INFO L168 Benchmark]: Toolchain (without parser) took 2008.17 ms. Allocated memory was 131.6 MB in the beginning and 198.7 MB in the end (delta: 67.1 MB). Free memory was 86.2 MB in the beginning and 105.6 MB in the end (delta: -19.4 MB). Peak memory consumption was 47.7 MB. Max. memory is 7.1 GB. [2019-09-03 19:20:58,502 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 131.6 MB. Free memory was 104.6 MB in the beginning and 104.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-03 19:20:58,504 INFO L168 Benchmark]: CACSL2BoogieTranslator took 379.72 ms. Allocated memory was 131.6 MB in the beginning and 198.7 MB in the end (delta: 67.1 MB). Free memory was 86.0 MB in the beginning and 175.0 MB in the end (delta: -89.1 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2019-09-03 19:20:58,506 INFO L168 Benchmark]: Boogie Preprocessor took 40.25 ms. Allocated memory is still 198.7 MB. Free memory was 175.0 MB in the beginning and 173.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2019-09-03 19:20:58,507 INFO L168 Benchmark]: RCFGBuilder took 384.51 ms. Allocated memory is still 198.7 MB. Free memory was 173.2 MB in the beginning and 157.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2019-09-03 19:20:58,508 INFO L168 Benchmark]: TraceAbstraction took 1199.30 ms. Allocated memory is still 198.7 MB. Free memory was 156.5 MB in the beginning and 105.6 MB in the end (delta: 50.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 7.1 GB. [2019-09-03 19:20:58,518 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 131.6 MB. Free memory was 104.6 MB in the beginning and 104.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 379.72 ms. Allocated memory was 131.6 MB in the beginning and 198.7 MB in the end (delta: 67.1 MB). Free memory was 86.0 MB in the beginning and 175.0 MB in the end (delta: -89.1 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 40.25 ms. Allocated memory is still 198.7 MB. Free memory was 175.0 MB in the beginning and 173.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 384.51 ms. Allocated memory is still 198.7 MB. Free memory was 173.2 MB in the beginning and 157.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1199.30 ms. Allocated memory is still 198.7 MB. Free memory was 156.5 MB in the beginning and 105.6 MB in the end (delta: 50.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] unsigned int M = __VERIFIER_nondet_uint(); [L15] int A[M], B[M], C[M]; [L16] unsigned int i; [L18] i=0 VAL [A={1:0}, B={-2:0}, C={-1:0}, i=0, M=1] [L18] COND TRUE i