./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/nested_structure_noptr-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-regression/nested_structure_noptr-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5b7ab499196b1f104131058ee0c669546ebbe7a6 ............................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-25 22:04:34,103 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 22:04:34,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 22:04:34,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 22:04:34,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 22:04:34,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 22:04:34,181 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 22:04:34,188 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 22:04:34,195 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 22:04:34,201 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 22:04:34,203 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 22:04:34,205 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 22:04:34,205 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 22:04:34,209 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 22:04:34,210 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 22:04:34,212 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 22:04:34,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 22:04:34,217 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 22:04:34,221 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 22:04:34,230 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 22:04:34,232 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 22:04:34,235 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 22:04:34,238 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 22:04:34,239 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 22:04:34,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 22:04:34,248 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 22:04:34,248 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 22:04:34,251 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 22:04:34,251 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 22:04:34,252 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 22:04:34,253 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 22:04:34,254 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 22:04:34,256 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 22:04:34,257 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 22:04:34,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 22:04:34,258 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 22:04:34,259 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 22:04:34,259 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 22:04:34,259 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 22:04:34,262 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 22:04:34,262 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 22:04:34,263 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 22:04:34,332 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 22:04:34,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 22:04:34,337 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 22:04:34,337 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 22:04:34,338 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 22:04:34,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 22:04:34,338 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 22:04:34,338 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 22:04:34,339 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 22:04:34,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 22:04:34,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 22:04:34,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 22:04:34,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 22:04:34,341 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 22:04:34,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 22:04:34,342 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 22:04:34,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 22:04:34,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 22:04:34,342 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 22:04:34,343 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 22:04:34,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 22:04:34,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:04:34,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 22:04:34,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 22:04:34,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 22:04:34,344 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 22:04:34,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 22:04:34,345 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 22:04:34,345 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 22:04:34,345 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b7ab499196b1f104131058ee0c669546ebbe7a6 [2020-10-25 22:04:34,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 22:04:34,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 22:04:34,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 22:04:34,780 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 22:04:34,782 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 22:04:34,783 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/nested_structure_noptr-1.i [2020-10-25 22:04:34,864 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cb5daaa5/04f1e3c3be044a1db114245ada21a4f0/FLAGf0f641d7d [2020-10-25 22:04:35,460 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 22:04:35,461 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/nested_structure_noptr-1.i [2020-10-25 22:04:35,469 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cb5daaa5/04f1e3c3be044a1db114245ada21a4f0/FLAGf0f641d7d [2020-10-25 22:04:35,825 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cb5daaa5/04f1e3c3be044a1db114245ada21a4f0 [2020-10-25 22:04:35,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 22:04:35,842 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 22:04:35,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 22:04:35,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 22:04:35,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 22:04:35,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:04:35" (1/1) ... [2020-10-25 22:04:35,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41949cde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:04:35, skipping insertion in model container [2020-10-25 22:04:35,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:04:35" (1/1) ... [2020-10-25 22:04:35,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 22:04:35,883 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 22:04:36,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:04:36,108 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 22:04:36,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:04:36,150 INFO L208 MainTranslator]: Completed translation [2020-10-25 22:04:36,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:04:36 WrapperNode [2020-10-25 22:04:36,151 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 22:04:36,152 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 22:04:36,153 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 22:04:36,153 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 22:04:36,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:04:36" (1/1) ... [2020-10-25 22:04:36,174 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:04:36" (1/1) ... [2020-10-25 22:04:36,196 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 22:04:36,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 22:04:36,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 22:04:36,198 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 22:04:36,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:04:36" (1/1) ... [2020-10-25 22:04:36,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:04:36" (1/1) ... [2020-10-25 22:04:36,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:04:36" (1/1) ... [2020-10-25 22:04:36,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:04:36" (1/1) ... [2020-10-25 22:04:36,216 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:04:36" (1/1) ... [2020-10-25 22:04:36,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:04:36" (1/1) ... [2020-10-25 22:04:36,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:04:36" (1/1) ... [2020-10-25 22:04:36,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 22:04:36,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 22:04:36,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 22:04:36,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 22:04:36,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:04:36" (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 [2020-10-25 22:04:36,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 22:04:36,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 22:04:36,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-25 22:04:36,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 22:04:36,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 22:04:36,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-25 22:04:36,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 22:04:36,572 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 22:04:36,572 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-25 22:04:36,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:04:36 BoogieIcfgContainer [2020-10-25 22:04:36,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 22:04:36,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 22:04:36,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 22:04:36,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 22:04:36,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 10:04:35" (1/3) ... [2020-10-25 22:04:36,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72074474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:04:36, skipping insertion in model container [2020-10-25 22:04:36,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:04:36" (2/3) ... [2020-10-25 22:04:36,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72074474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:04:36, skipping insertion in model container [2020-10-25 22:04:36,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:04:36" (3/3) ... [2020-10-25 22:04:36,585 INFO L111 eAbstractionObserver]: Analyzing ICFG nested_structure_noptr-1.i [2020-10-25 22:04:36,599 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 22:04:36,604 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 22:04:36,620 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 22:04:36,651 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 22:04:36,651 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 22:04:36,651 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 22:04:36,652 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 22:04:36,652 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 22:04:36,652 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 22:04:36,652 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 22:04:36,652 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 22:04:36,671 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-10-25 22:04:36,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-25 22:04:36,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:04:36,679 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-25 22:04:36,680 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:04:36,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:04:36,691 INFO L82 PathProgramCache]: Analyzing trace with hash 889506790, now seen corresponding path program 1 times [2020-10-25 22:04:36,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:04:36,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919167693] [2020-10-25 22:04:36,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:04:36,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:04:37,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:04:37,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919167693] [2020-10-25 22:04:37,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:04:37,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 22:04:37,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427922692] [2020-10-25 22:04:37,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 22:04:37,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:04:37,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 22:04:37,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 22:04:37,100 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-10-25 22:04:37,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:04:37,142 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-10-25 22:04:37,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 22:04:37,144 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-25 22:04:37,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:04:37,152 INFO L225 Difference]: With dead ends: 16 [2020-10-25 22:04:37,152 INFO L226 Difference]: Without dead ends: 0 [2020-10-25 22:04:37,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 22:04:37,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-25 22:04:37,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-25 22:04:37,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-25 22:04:37,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-25 22:04:37,183 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2020-10-25 22:04:37,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:04:37,184 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-25 22:04:37,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 22:04:37,184 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-25 22:04:37,184 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-25 22:04:37,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 22:04:37,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-25 22:04:37,209 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-25 22:04:37,209 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-25 22:04:37,209 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-25 22:04:37,210 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-25 22:04:37,210 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-25 22:04:37,210 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-25 22:04:37,210 INFO L274 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed. [2020-10-25 22:04:37,210 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-10-25 22:04:37,211 INFO L270 CegarLoopResult]: At program point L14-2(lines 13 18) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2020-10-25 22:04:37,211 INFO L270 CegarLoopResult]: At program point L43(lines 38 44) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2020-10-25 22:04:37,211 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-25 22:04:37,211 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-10-25 22:04:37,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 10:04:37 BoogieIcfgContainer [2020-10-25 22:04:37,229 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 22:04:37,230 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 22:04:37,230 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 22:04:37,230 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 22:04:37,231 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:04:36" (3/4) ... [2020-10-25 22:04:37,234 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-25 22:04:37,247 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-10-25 22:04:37,247 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-25 22:04:37,247 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 22:04:37,247 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 22:04:37,290 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 22:04:37,290 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 22:04:37,293 INFO L168 Benchmark]: Toolchain (without parser) took 1456.23 ms. Allocated memory was 44.0 MB in the beginning and 56.6 MB in the end (delta: 12.6 MB). Free memory was 21.7 MB in the beginning and 24.6 MB in the end (delta: -2.9 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:04:37,293 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 44.0 MB. Free memory is still 29.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:04:37,299 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.59 ms. Allocated memory is still 44.0 MB. Free memory was 21.1 MB in the beginning and 22.8 MB in the end (delta: -1.7 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-10-25 22:04:37,299 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.01 ms. Allocated memory is still 44.0 MB. Free memory was 22.6 MB in the beginning and 21.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:04:37,300 INFO L168 Benchmark]: Boogie Preprocessor took 25.96 ms. Allocated memory is still 44.0 MB. Free memory was 21.3 MB in the beginning and 20.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:04:37,301 INFO L168 Benchmark]: RCFGBuilder took 350.38 ms. Allocated memory was 44.0 MB in the beginning and 56.6 MB in the end (delta: 12.6 MB). Free memory was 20.2 MB in the beginning and 32.3 MB in the end (delta: -12.1 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.1 GB. [2020-10-25 22:04:37,302 INFO L168 Benchmark]: TraceAbstraction took 652.70 ms. Allocated memory is still 56.6 MB. Free memory was 31.9 MB in the beginning and 26.9 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2020-10-25 22:04:37,303 INFO L168 Benchmark]: Witness Printer took 60.37 ms. Allocated memory is still 56.6 MB. Free memory was 26.9 MB in the beginning and 24.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:04:37,310 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 44.0 MB. Free memory is still 29.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 307.59 ms. Allocated memory is still 44.0 MB. Free memory was 21.1 MB in the beginning and 22.8 MB in the end (delta: -1.7 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.01 ms. Allocated memory is still 44.0 MB. Free memory was 22.6 MB in the beginning and 21.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.96 ms. Allocated memory is still 44.0 MB. Free memory was 21.3 MB in the beginning and 20.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 350.38 ms. Allocated memory was 44.0 MB in the beginning and 56.6 MB in the end (delta: 12.6 MB). Free memory was 20.2 MB in the beginning and 32.3 MB in the end (delta: -12.1 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 652.70 ms. Allocated memory is still 56.6 MB. Free memory was 31.9 MB in the beginning and 26.9 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * Witness Printer took 60.37 ms. Allocated memory is still 56.6 MB. Free memory was 26.9 MB in the beginning and 24.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: !(0 == cond) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: !(0 == cond) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5 SDtfs, 4 SDslu, 1 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 8 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 40 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 correct! Received shutdown request...