/usr/bin/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/array-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 21:13:41,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 21:13:41,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 21:13:41,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 21:13:41,151 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 21:13:41,161 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 21:13:41,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 21:13:41,167 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 21:13:41,169 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 21:13:41,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 21:13:41,173 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 21:13:41,174 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 21:13:41,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 21:13:41,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 21:13:41,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 21:13:41,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 21:13:41,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 21:13:41,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 21:13:41,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 21:13:41,193 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 21:13:41,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 21:13:41,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 21:13:41,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 21:13:41,198 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 21:13:41,210 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 21:13:41,221 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 21:13:41,222 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 21:13:41,222 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 21:13:41,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 21:13:41,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 21:13:41,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 21:13:41,229 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 21:13:41,230 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 21:13:41,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 21:13:41,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 21:13:41,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 21:13:41,232 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 21:13:41,264 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 21:13:41,265 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 21:13:41,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 21:13:41,266 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 21:13:41,267 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 21:13:41,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 21:13:41,267 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 21:13:41,267 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 21:13:41,267 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 21:13:41,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 21:13:41,268 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 21:13:41,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 21:13:41,268 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 21:13:41,268 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 21:13:41,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 21:13:41,269 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 21:13:41,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 21:13:41,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 21:13:41,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 21:13:41,270 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 21:13:41,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 21:13:41,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:13:41,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 21:13:41,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 21:13:41,271 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 21:13:41,271 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 21:13:41,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 21:13:41,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 21:13:41,271 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 21:13:41,272 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; [2020-08-18 21:13:41,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 21:13:41,605 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 21:13:41,608 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 21:13:41,610 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 21:13:41,610 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 21:13:41,611 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/array-2.c [2020-08-18 21:13:41,679 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5139f12c7/98b1c275943d402fb650278881c829b2/FLAG00b2ae5d6 [2020-08-18 21:13:42,114 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 21:13:42,115 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/array-2.c [2020-08-18 21:13:42,121 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5139f12c7/98b1c275943d402fb650278881c829b2/FLAG00b2ae5d6 [2020-08-18 21:13:42,470 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5139f12c7/98b1c275943d402fb650278881c829b2 [2020-08-18 21:13:42,480 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 21:13:42,482 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 21:13:42,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 21:13:42,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 21:13:42,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 21:13:42,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:13:42" (1/1) ... [2020-08-18 21:13:42,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a7c6092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:42, skipping insertion in model container [2020-08-18 21:13:42,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:13:42" (1/1) ... [2020-08-18 21:13:42,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 21:13:42,516 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 21:13:42,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:13:42,685 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 21:13:42,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:13:42,723 INFO L208 MainTranslator]: Completed translation [2020-08-18 21:13:42,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:42 WrapperNode [2020-08-18 21:13:42,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 21:13:42,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 21:13:42,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 21:13:42,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 21:13:42,812 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:42" (1/1) ... [2020-08-18 21:13:42,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:42" (1/1) ... [2020-08-18 21:13:42,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:42" (1/1) ... [2020-08-18 21:13:42,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:42" (1/1) ... [2020-08-18 21:13:42,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:42" (1/1) ... [2020-08-18 21:13:42,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:42" (1/1) ... [2020-08-18 21:13:42,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:42" (1/1) ... [2020-08-18 21:13:42,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 21:13:42,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 21:13:42,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 21:13:42,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 21:13:42,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-18 21:13:42,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 21:13:42,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 21:13:42,912 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 21:13:42,912 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 21:13:42,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 21:13:42,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 21:13:42,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 21:13:42,913 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 21:13:42,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 21:13:42,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 21:13:42,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 21:13:42,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 21:13:42,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 21:13:42,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 21:13:43,154 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 21:13:43,154 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-18 21:13:43,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:13:43 BoogieIcfgContainer [2020-08-18 21:13:43,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 21:13:43,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 21:13:43,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 21:13:43,165 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 21:13:43,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 09:13:42" (1/3) ... [2020-08-18 21:13:43,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@209c8725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:13:43, skipping insertion in model container [2020-08-18 21:13:43,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:42" (2/3) ... [2020-08-18 21:13:43,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@209c8725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:13:43, skipping insertion in model container [2020-08-18 21:13:43,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:13:43" (3/3) ... [2020-08-18 21:13:43,169 INFO L109 eAbstractionObserver]: Analyzing ICFG array-2.c [2020-08-18 21:13:43,182 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 21:13:43,192 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 21:13:43,210 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 21:13:43,238 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 21:13:43,238 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 21:13:43,238 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 21:13:43,239 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 21:13:43,239 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 21:13:43,239 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 21:13:43,239 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 21:13:43,239 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 21:13:43,259 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-08-18 21:13:43,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-18 21:13:43,266 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:13:43,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:13:43,268 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:13:43,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:13:43,276 INFO L82 PathProgramCache]: Analyzing trace with hash 202253298, now seen corresponding path program 1 times [2020-08-18 21:13:43,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:13:43,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380584667] [2020-08-18 21:13:43,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:13:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:13:43,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:13:43,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:13:43,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:13:43,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380584667] [2020-08-18 21:13:43,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:13:43,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 21:13:43,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384180872] [2020-08-18 21:13:43,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 21:13:43,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:13:43,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 21:13:43,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 21:13:43,520 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2020-08-18 21:13:43,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:13:43,617 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-08-18 21:13:43,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 21:13:43,619 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-08-18 21:13:43,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:13:43,628 INFO L225 Difference]: With dead ends: 35 [2020-08-18 21:13:43,628 INFO L226 Difference]: Without dead ends: 15 [2020-08-18 21:13:43,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 21:13:43,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-08-18 21:13:43,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-08-18 21:13:43,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-08-18 21:13:43,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-08-18 21:13:43,678 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2020-08-18 21:13:43,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:13:43,678 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-08-18 21:13:43,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 21:13:43,679 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-08-18 21:13:43,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-18 21:13:43,680 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:13:43,680 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:13:43,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 21:13:43,681 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:13:43,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:13:43,682 INFO L82 PathProgramCache]: Analyzing trace with hash -112667363, now seen corresponding path program 1 times [2020-08-18 21:13:43,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:13:43,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871599970] [2020-08-18 21:13:43,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:13:43,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:13:43,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:13:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:13:43,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:13:43,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871599970] [2020-08-18 21:13:43,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:13:43,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 21:13:43,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938906944] [2020-08-18 21:13:43,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 21:13:43,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:13:43,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 21:13:43,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:13:43,837 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 4 states. [2020-08-18 21:13:43,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:13:43,921 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2020-08-18 21:13:43,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 21:13:43,922 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-08-18 21:13:43,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:13:43,924 INFO L225 Difference]: With dead ends: 24 [2020-08-18 21:13:43,924 INFO L226 Difference]: Without dead ends: 18 [2020-08-18 21:13:43,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:13:43,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-08-18 21:13:43,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2020-08-18 21:13:43,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-08-18 21:13:43,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-08-18 21:13:43,936 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2020-08-18 21:13:43,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:13:43,936 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-08-18 21:13:43,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 21:13:43,937 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-08-18 21:13:43,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-18 21:13:43,938 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:13:43,938 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:13:43,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 21:13:43,940 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:13:43,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:13:43,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1912057964, now seen corresponding path program 1 times [2020-08-18 21:13:43,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:13:43,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717819542] [2020-08-18 21:13:43,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:13:44,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 21:13:44,027 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 21:13:44,028 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 21:13:44,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 21:13:44,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 09:13:44 BoogieIcfgContainer [2020-08-18 21:13:44,049 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 21:13:44,052 INFO L168 Benchmark]: Toolchain (without parser) took 1569.88 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 103.7 MB in the beginning and 122.5 MB in the end (delta: -18.8 MB). Peak memory consumption was 44.1 MB. Max. memory is 7.1 GB. [2020-08-18 21:13:44,053 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.6 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-08-18 21:13:44,054 INFO L168 Benchmark]: CACSL2BoogieTranslator took 240.53 ms. Allocated memory is still 140.5 MB. Free memory was 103.3 MB in the beginning and 93.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-08-18 21:13:44,055 INFO L168 Benchmark]: Boogie Preprocessor took 120.08 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 93.3 MB in the beginning and 180.9 MB in the end (delta: -87.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-08-18 21:13:44,056 INFO L168 Benchmark]: RCFGBuilder took 316.57 ms. Allocated memory is still 203.4 MB. Free memory was 180.9 MB in the beginning and 166.7 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-08-18 21:13:44,057 INFO L168 Benchmark]: TraceAbstraction took 887.48 ms. Allocated memory is still 203.4 MB. Free memory was 165.8 MB in the beginning and 122.5 MB in the end (delta: 43.3 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. [2020-08-18 21:13:44,060 INFO L336 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 140.5 MB. Free memory was 122.0 MB in the beginning and 121.6 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 240.53 ms. Allocated memory is still 140.5 MB. Free memory was 103.3 MB in the beginning and 93.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.08 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 93.3 MB in the beginning and 180.9 MB in the end (delta: -87.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 316.57 ms. Allocated memory is still 203.4 MB. Free memory was 180.9 MB in the beginning and 166.7 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 887.48 ms. Allocated memory is still 203.4 MB. Free memory was 165.8 MB in the beginning and 122.5 MB in the end (delta: 43.3 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] unsigned int SIZE=1; [L14] unsigned int j,k; [L15] int array[SIZE], menor; [L17] menor = __VERIFIER_nondet_int() [L19] j=0 [L19] COND TRUE jmenor) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 32 SDtfs, 11 SDslu, 13 SDs, 0 SdLazy, 34 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 561 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...