/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/nec11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:20:26,005 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:20:26,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:20:26,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:20:26,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:20:26,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:20:26,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:20:26,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:20:26,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:20:26,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:20:26,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:20:26,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:20:26,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:20:26,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:20:26,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:20:26,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:20:26,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:20:26,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:20:26,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:20:26,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:20:26,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:20:26,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:20:26,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:20:26,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:20:26,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:20:26,121 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:20:26,121 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:20:26,122 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:20:26,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:20:26,129 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:20:26,129 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:20:26,130 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:20:26,131 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:20:26,132 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:20:26,133 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:20:26,133 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:20:26,134 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:20:26,134 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:20:26,135 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:20:26,136 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:20:26,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:20:26,137 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 [2020-09-24 17:20:26,163 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:20:26,164 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:20:26,165 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:20:26,165 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:20:26,165 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:20:26,166 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:20:26,166 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:20:26,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:20:26,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:20:26,167 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:20:26,167 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:20:26,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:20:26,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:20:26,167 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:20:26,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:20:26,168 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:20:26,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:20:26,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:20:26,169 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:20:26,169 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:20:26,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:20:26,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:20:26,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:20:26,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:20:26,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:20:26,170 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:20:26,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:20:26,170 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:20:26,171 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:20:26,171 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.rcfgbuilder: Size of a code block -> SingleStatement 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 -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; [2020-09-24 17:20:26,651 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:20:26,680 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:20:26,685 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:20:26,686 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:20:26,687 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:20:26,689 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/nec11.c [2020-09-24 17:20:26,771 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5a43bc42/44fddde19b3b4667b3d24c4d0058f7c7/FLAGdf9dc58eb [2020-09-24 17:20:27,319 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:20:27,320 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/nec11.c [2020-09-24 17:20:27,328 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5a43bc42/44fddde19b3b4667b3d24c4d0058f7c7/FLAGdf9dc58eb [2020-09-24 17:20:27,663 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5a43bc42/44fddde19b3b4667b3d24c4d0058f7c7 [2020-09-24 17:20:27,678 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:20:27,685 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:20:27,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:20:27,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:20:27,691 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:20:27,692 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:20:27" (1/1) ... [2020-09-24 17:20:27,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75a18185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:27, skipping insertion in model container [2020-09-24 17:20:27,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:20:27" (1/1) ... [2020-09-24 17:20:27,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:20:27,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:20:27,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:20:27,946 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:20:27,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:20:27,984 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:20:27,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:27 WrapperNode [2020-09-24 17:20:27,985 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:20:27,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:20:27,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:20:27,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:20:28,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:27" (1/1) ... [2020-09-24 17:20:28,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:27" (1/1) ... [2020-09-24 17:20:28,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:27" (1/1) ... [2020-09-24 17:20:28,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:27" (1/1) ... [2020-09-24 17:20:28,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:27" (1/1) ... [2020-09-24 17:20:28,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:27" (1/1) ... [2020-09-24 17:20:28,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:27" (1/1) ... [2020-09-24 17:20:28,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:20:28,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:20:28,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:20:28,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:20:28,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:27" (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 [2020-09-24 17:20:28,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:20:28,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:20:28,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 17:20:28,183 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:20:28,183 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:20:28,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 17:20:28,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 17:20:28,184 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:20:28,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:20:28,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:20:28,384 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:20:28,385 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 17:20:28,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:20:28 BoogieIcfgContainer [2020-09-24 17:20:28,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:20:28,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:20:28,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:20:28,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:20:28,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:20:27" (1/3) ... [2020-09-24 17:20:28,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@100a93aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:20:28, skipping insertion in model container [2020-09-24 17:20:28,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:20:27" (2/3) ... [2020-09-24 17:20:28,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@100a93aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:20:28, skipping insertion in model container [2020-09-24 17:20:28,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:20:28" (3/3) ... [2020-09-24 17:20:28,400 INFO L109 eAbstractionObserver]: Analyzing ICFG nec11.c [2020-09-24 17:20:28,412 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:20:28,422 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:20:28,444 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:20:28,474 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:20:28,474 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:20:28,474 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:20:28,474 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:20:28,475 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:20:28,475 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:20:28,475 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:20:28,475 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:20:28,494 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-09-24 17:20:28,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-24 17:20:28,502 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:20:28,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:20:28,503 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:20:28,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:20:28,511 INFO L82 PathProgramCache]: Analyzing trace with hash -341317185, now seen corresponding path program 1 times [2020-09-24 17:20:28,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:20:28,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844198589] [2020-09-24 17:20:28,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:20:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:20:28,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:20:28,649 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:20:28,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 17:20:28,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:20:28,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 17:20:28,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:20:28,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:20:28,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 17:20:28,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:20:28,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:20:28,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:20:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:20:28,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:20:28,689 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:20:28,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:20:28,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:20:28,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:20:28,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:20:28,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:20:28,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:20:28,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:20:28,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:20:28,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:20:28,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844198589] [2020-09-24 17:20:28,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:20:28,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-24 17:20:28,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155981197] [2020-09-24 17:20:28,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-24 17:20:28,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:20:28,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-24 17:20:28,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 17:20:28,729 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-09-24 17:20:28,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:20:28,760 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2020-09-24 17:20:28,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-24 17:20:28,761 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-09-24 17:20:28,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:20:28,771 INFO L225 Difference]: With dead ends: 40 [2020-09-24 17:20:28,771 INFO L226 Difference]: Without dead ends: 21 [2020-09-24 17:20:28,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 17:20:28,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-09-24 17:20:28,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-09-24 17:20:28,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-09-24 17:20:28,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-09-24 17:20:28,823 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 14 [2020-09-24 17:20:28,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:20:28,824 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-09-24 17:20:28,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-24 17:20:28,824 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-09-24 17:20:28,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-24 17:20:28,825 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:20:28,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:20:28,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:20:28,826 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:20:28,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:20:28,826 INFO L82 PathProgramCache]: Analyzing trace with hash -355170000, now seen corresponding path program 1 times [2020-09-24 17:20:28,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:20:28,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829568395] [2020-09-24 17:20:28,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:20:28,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 17:20:28,859 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 17:20:28,859 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 17:20:28,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:20:28,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 05:20:28 BoogieIcfgContainer [2020-09-24 17:20:28,885 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 17:20:28,889 INFO L168 Benchmark]: Toolchain (without parser) took 1206.95 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 102.4 MB in the beginning and 144.7 MB in the end (delta: -42.3 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2020-09-24 17:20:28,890 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-24 17:20:28,891 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.62 ms. Allocated memory is still 140.0 MB. Free memory was 101.7 MB in the beginning and 91.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-24 17:20:28,892 INFO L168 Benchmark]: Boogie Preprocessor took 116.09 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 91.9 MB in the beginning and 180.9 MB in the end (delta: -89.0 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-09-24 17:20:28,893 INFO L168 Benchmark]: RCFGBuilder took 287.59 ms. Allocated memory is still 202.4 MB. Free memory was 180.9 MB in the beginning and 169.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2020-09-24 17:20:28,894 INFO L168 Benchmark]: TraceAbstraction took 493.79 ms. Allocated memory is still 202.4 MB. Free memory was 168.6 MB in the beginning and 144.7 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-09-24 17:20:28,898 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 299.62 ms. Allocated memory is still 140.0 MB. Free memory was 101.7 MB in the beginning and 91.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.09 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 91.9 MB in the beginning and 180.9 MB in the end (delta: -89.0 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 287.59 ms. Allocated memory is still 202.4 MB. Free memory was 180.9 MB in the beginning and 169.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 493.79 ms. Allocated memory is still 202.4 MB. Free memory was 168.6 MB in the beginning and 144.7 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 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] int a[5]; [L14] int len=0; [L15] _Bool c=__VERIFIER_nondet_bool(); [L16] int i; [L19] COND FALSE !(\read(c)) [L28] CALL __VERIFIER_assert(len==5) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 29 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 169 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...