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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/loops/sum_array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:49:15,253 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:49:15,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:49:15,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-10 01:49:15,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 01:49:15,279 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 01:49:15,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 01:49:15,281 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 01:49:15,282 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 01:49:15,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 01:49:15,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 01:49:15,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 01:49:15,287 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 01:49:15,288 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 01:49:15,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 01:49:15,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 01:49:15,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-10 01:49:15,295 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 01:49:15,295 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 01:49:15,296 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 01:49:15,297 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 01:49:15,298 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 01:49:15,298 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 01:49:15,299 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 01:49:15,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 01:49:15,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 01:49:15,300 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 01:49:15,301 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 01:49:15,302 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-10 01:49:15,316 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:49:15,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:49:15,317 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:49:15,317 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:49:15,318 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:49:15,318 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:49:15,318 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:49:15,318 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:49:15,319 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:49:15,319 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:49:15,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:49:15,320 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:49:15,320 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:49:15,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:49:15,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:49:15,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:49:15,321 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:49:15,321 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:49:15,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:49:15,321 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:49:15,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:49:15,322 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:49:15,322 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:49:15,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:49:15,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:49:15,323 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:49:15,323 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:49:15,323 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:49:15,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:49:15,323 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:49:15,356 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:49:15,370 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:49:15,373 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:49:15,375 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:49:15,375 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:49:15,376 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum_array-1.c [2019-09-10 01:49:15,457 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/799994bf6/cbc99b08061a4296add2fc46a9f5cbbe/FLAG892a732fb [2019-09-10 01:49:15,945 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:49:15,945 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum_array-1.c [2019-09-10 01:49:15,954 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/799994bf6/cbc99b08061a4296add2fc46a9f5cbbe/FLAG892a732fb [2019-09-10 01:49:16,271 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/799994bf6/cbc99b08061a4296add2fc46a9f5cbbe [2019-09-10 01:49:16,283 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:49:16,284 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:49:16,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:49:16,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:49:16,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:49:16,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:49:16" (1/1) ... [2019-09-10 01:49:16,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34e70c8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:16, skipping insertion in model container [2019-09-10 01:49:16,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:49:16" (1/1) ... [2019-09-10 01:49:16,302 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:49:16,320 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:49:16,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:49:16,496 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:49:16,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:49:16,540 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:49:16,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:16 WrapperNode [2019-09-10 01:49:16,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:49:16,541 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:49:16,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:49:16,542 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:49:16,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:16" (1/1) ... [2019-09-10 01:49:16,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:16" (1/1) ... [2019-09-10 01:49:16,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:16" (1/1) ... [2019-09-10 01:49:16,657 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:16" (1/1) ... [2019-09-10 01:49:16,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:16" (1/1) ... [2019-09-10 01:49:16,672 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:16" (1/1) ... [2019-09-10 01:49:16,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:16" (1/1) ... [2019-09-10 01:49:16,676 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:49:16,677 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:49:16,677 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:49:16,677 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:49:16,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:16" (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 [2019-09-10 01:49:16,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:49:16,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:49:16,750 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-10 01:49:16,751 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:49:16,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:49:16,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 01:49:16,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-10 01:49:16,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-09-10 01:49:16,751 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:49:16,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 01:49:16,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 01:49:16,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 01:49:16,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 01:49:16,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:49:16,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:49:17,087 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:49:17,088 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-09-10 01:49:17,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:49:17 BoogieIcfgContainer [2019-09-10 01:49:17,089 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:49:17,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:49:17,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:49:17,095 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:49:17,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:49:16" (1/3) ... [2019-09-10 01:49:17,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@439d2e0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:49:17, skipping insertion in model container [2019-09-10 01:49:17,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:16" (2/3) ... [2019-09-10 01:49:17,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@439d2e0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:49:17, skipping insertion in model container [2019-09-10 01:49:17,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:49:17" (3/3) ... [2019-09-10 01:49:17,098 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_array-1.c [2019-09-10 01:49:17,109 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:49:17,117 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:49:17,135 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:49:17,159 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:49:17,159 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:49:17,159 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:49:17,159 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:49:17,159 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:49:17,159 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:49:17,159 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:49:17,159 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:49:17,174 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-09-10 01:49:17,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-10 01:49:17,187 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:49:17,188 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:49:17,194 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:49:17,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:49:17,200 INFO L82 PathProgramCache]: Analyzing trace with hash 415311520, now seen corresponding path program 1 times [2019-09-10 01:49:17,202 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:49:17,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:49:17,244 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:49:17,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:49:17,244 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:49:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:49:17,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:49:17,348 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:49:17,348 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 01:49:17,348 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:49:17,353 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:49:17,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:49:17,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:49:17,370 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2019-09-10 01:49:17,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:49:17,393 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2019-09-10 01:49:17,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:49:17,394 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-09-10 01:49:17,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:49:17,407 INFO L225 Difference]: With dead ends: 30 [2019-09-10 01:49:17,408 INFO L226 Difference]: Without dead ends: 25 [2019-09-10 01:49:17,413 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 [2019-09-10 01:49:17,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-09-10 01:49:17,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-09-10 01:49:17,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-09-10 01:49:17,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2019-09-10 01:49:17,469 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 17 [2019-09-10 01:49:17,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:49:17,471 INFO L475 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2019-09-10 01:49:17,472 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:49:17,472 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2019-09-10 01:49:17,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-10 01:49:17,473 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:49:17,474 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:49:17,475 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:49:17,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:49:17,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1687882214, now seen corresponding path program 1 times [2019-09-10 01:49:17,477 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:49:17,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:49:17,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:49:17,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:49:17,480 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:49:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:49:17,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:49:17,715 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:49:17,715 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-10 01:49:17,716 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:49:17,717 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 01:49:17,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 01:49:17,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 01:49:17,718 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 4 states. [2019-09-10 01:49:17,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:49:17,867 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2019-09-10 01:49:17,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-10 01:49:17,868 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-09-10 01:49:17,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:49:17,871 INFO L225 Difference]: With dead ends: 41 [2019-09-10 01:49:17,871 INFO L226 Difference]: Without dead ends: 35 [2019-09-10 01:49:17,872 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 [2019-09-10 01:49:17,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-09-10 01:49:17,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2019-09-10 01:49:17,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-09-10 01:49:17,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2019-09-10 01:49:17,888 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 17 [2019-09-10 01:49:17,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:49:17,888 INFO L475 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2019-09-10 01:49:17,888 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 01:49:17,889 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2019-09-10 01:49:17,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-09-10 01:49:17,891 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:49:17,892 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] [2019-09-10 01:49:17,893 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:49:17,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:49:17,894 INFO L82 PathProgramCache]: Analyzing trace with hash -825329612, now seen corresponding path program 1 times [2019-09-10 01:49:17,894 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:49:17,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:49:17,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:49:17,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:49:17,897 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:49:18,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-10 01:49:18,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-10 01:49:18,139 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-10 01:49:18,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 01:49:18 BoogieIcfgContainer [2019-09-10 01:49:18,202 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 01:49:18,206 INFO L168 Benchmark]: Toolchain (without parser) took 1919.94 ms. Allocated memory was 134.7 MB in the beginning and 201.9 MB in the end (delta: 67.1 MB). Free memory was 91.4 MB in the beginning and 110.2 MB in the end (delta: -18.8 MB). Peak memory consumption was 48.3 MB. Max. memory is 7.1 GB. [2019-09-10 01:49:18,207 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 134.7 MB. Free memory was 109.3 MB in the beginning and 109.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 01:49:18,210 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.43 ms. Allocated memory is still 134.7 MB. Free memory was 91.2 MB in the beginning and 80.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2019-09-10 01:49:18,212 INFO L168 Benchmark]: Boogie Preprocessor took 135.15 ms. Allocated memory was 134.7 MB in the beginning and 201.9 MB in the end (delta: 67.1 MB). Free memory was 80.8 MB in the beginning and 177.8 MB in the end (delta: -97.1 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2019-09-10 01:49:18,213 INFO L168 Benchmark]: RCFGBuilder took 412.43 ms. Allocated memory is still 201.9 MB. Free memory was 177.8 MB in the beginning and 160.9 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. [2019-09-10 01:49:18,215 INFO L168 Benchmark]: TraceAbstraction took 1112.36 ms. Allocated memory is still 201.9 MB. Free memory was 160.9 MB in the beginning and 110.2 MB in the end (delta: 50.7 MB). Peak memory consumption was 50.7 MB. Max. memory is 7.1 GB. [2019-09-10 01:49:18,225 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 134.7 MB. Free memory was 109.3 MB in the beginning and 109.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 255.43 ms. Allocated memory is still 134.7 MB. Free memory was 91.2 MB in the beginning and 80.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.15 ms. Allocated memory was 134.7 MB in the beginning and 201.9 MB in the end (delta: 67.1 MB). Free memory was 80.8 MB in the beginning and 177.8 MB in the end (delta: -97.1 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 412.43 ms. Allocated memory is still 201.9 MB. Free memory was 177.8 MB in the beginning and 160.9 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1112.36 ms. Allocated memory is still 201.9 MB. Free memory was 160.9 MB in the beginning and 110.2 MB in the end (delta: 50.7 MB). Peak memory consumption was 50.7 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