./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/nested_structure-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d8b6c354-74ed-4b04-a0e3-e0984880a08c/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d8b6c354-74ed-4b04-a0e3-e0984880a08c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d8b6c354-74ed-4b04-a0e3-e0984880a08c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d8b6c354-74ed-4b04-a0e3-e0984880a08c/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/nested_structure-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_d8b6c354-74ed-4b04-a0e3-e0984880a08c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d8b6c354-74ed-4b04-a0e3-e0984880a08c/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6ed3973f7383bbdf74f77d846485a93896b526fd ................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 00:05:53,074 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 00:05:53,077 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 00:05:53,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 00:05:53,094 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 00:05:53,095 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 00:05:53,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 00:05:53,107 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 00:05:53,112 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 00:05:53,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 00:05:53,118 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 00:05:53,119 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 00:05:53,119 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 00:05:53,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 00:05:53,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 00:05:53,124 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 00:05:53,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 00:05:53,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 00:05:53,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 00:05:53,133 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 00:05:53,137 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 00:05:53,140 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 00:05:53,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 00:05:53,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 00:05:53,146 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 00:05:53,147 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 00:05:53,147 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 00:05:53,149 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 00:05:53,149 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 00:05:53,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 00:05:53,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 00:05:53,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 00:05:53,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 00:05:53,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 00:05:53,155 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 00:05:53,155 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 00:05:53,156 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 00:05:53,156 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 00:05:53,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 00:05:53,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 00:05:53,159 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 00:05:53,159 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d8b6c354-74ed-4b04-a0e3-e0984880a08c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 00:05:53,188 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 00:05:53,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 00:05:53,201 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 00:05:53,201 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 00:05:53,202 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 00:05:53,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 00:05:53,202 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 00:05:53,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 00:05:53,203 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 00:05:53,203 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 00:05:53,203 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 00:05:53,204 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 00:05:53,204 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 00:05:53,204 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 00:05:53,204 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 00:05:53,205 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 00:05:53,205 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 00:05:53,205 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 00:05:53,205 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 00:05:53,206 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 00:05:53,206 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 00:05:53,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 00:05:53,207 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 00:05:53,207 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 00:05:53,207 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 00:05:53,207 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 00:05:53,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 00:05:53,208 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 00:05:53,208 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_d8b6c354-74ed-4b04-a0e3-e0984880a08c/bin/uautomizer 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(__VERIFIER_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 -> 6ed3973f7383bbdf74f77d846485a93896b526fd [2019-11-20 00:05:53,395 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 00:05:53,411 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 00:05:53,414 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 00:05:53,415 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 00:05:53,416 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 00:05:53,416 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d8b6c354-74ed-4b04-a0e3-e0984880a08c/bin/uautomizer/../../sv-benchmarks/c/ldv-regression/nested_structure-2.i [2019-11-20 00:05:53,481 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d8b6c354-74ed-4b04-a0e3-e0984880a08c/bin/uautomizer/data/041406ef6/4155ed76de6542558133d18c64c1827f/FLAGae4c5dc78 [2019-11-20 00:05:53,874 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 00:05:53,874 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d8b6c354-74ed-4b04-a0e3-e0984880a08c/sv-benchmarks/c/ldv-regression/nested_structure-2.i [2019-11-20 00:05:53,879 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d8b6c354-74ed-4b04-a0e3-e0984880a08c/bin/uautomizer/data/041406ef6/4155ed76de6542558133d18c64c1827f/FLAGae4c5dc78 [2019-11-20 00:05:53,891 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d8b6c354-74ed-4b04-a0e3-e0984880a08c/bin/uautomizer/data/041406ef6/4155ed76de6542558133d18c64c1827f [2019-11-20 00:05:53,893 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 00:05:53,895 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 00:05:53,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 00:05:53,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 00:05:53,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 00:05:53,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:05:53" (1/1) ... [2019-11-20 00:05:53,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@489eedac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:53, skipping insertion in model container [2019-11-20 00:05:53,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:05:53" (1/1) ... [2019-11-20 00:05:53,911 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 00:05:53,928 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 00:05:54,103 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 00:05:54,218 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 00:05:54,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 00:05:54,260 INFO L192 MainTranslator]: Completed translation [2019-11-20 00:05:54,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:54 WrapperNode [2019-11-20 00:05:54,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 00:05:54,262 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 00:05:54,262 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 00:05:54,262 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 00:05:54,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:54" (1/1) ... [2019-11-20 00:05:54,282 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:54" (1/1) ... [2019-11-20 00:05:54,308 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 00:05:54,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 00:05:54,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 00:05:54,310 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 00:05:54,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:54" (1/1) ... [2019-11-20 00:05:54,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:54" (1/1) ... [2019-11-20 00:05:54,332 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:54" (1/1) ... [2019-11-20 00:05:54,333 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:54" (1/1) ... [2019-11-20 00:05:54,347 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:54" (1/1) ... [2019-11-20 00:05:54,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:54" (1/1) ... [2019-11-20 00:05:54,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:54" (1/1) ... [2019-11-20 00:05:54,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 00:05:54,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 00:05:54,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 00:05:54,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 00:05:54,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d8b6c354-74ed-4b04-a0e3-e0984880a08c/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 00:05:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-20 00:05:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-20 00:05:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-20 00:05:54,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 00:05:54,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 00:05:54,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 00:05:54,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 00:05:54,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 00:05:54,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 00:05:54,644 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 00:05:54,644 INFO L285 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-20 00:05:54,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:05:54 BoogieIcfgContainer [2019-11-20 00:05:54,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 00:05:54,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 00:05:54,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 00:05:54,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 00:05:54,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:05:53" (1/3) ... [2019-11-20 00:05:54,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14367206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:05:54, skipping insertion in model container [2019-11-20 00:05:54,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:54" (2/3) ... [2019-11-20 00:05:54,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14367206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:05:54, skipping insertion in model container [2019-11-20 00:05:54,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:05:54" (3/3) ... [2019-11-20 00:05:54,653 INFO L109 eAbstractionObserver]: Analyzing ICFG nested_structure-2.i [2019-11-20 00:05:54,662 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 00:05:54,668 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 00:05:54,680 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 00:05:54,700 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 00:05:54,701 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 00:05:54,701 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 00:05:54,701 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 00:05:54,701 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 00:05:54,702 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 00:05:54,702 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 00:05:54,702 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 00:05:54,715 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-20 00:05:54,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-20 00:05:54,720 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:05:54,721 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-20 00:05:54,721 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 00:05:54,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:05:54,726 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2019-11-20 00:05:54,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:05:54,736 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210936003] [2019-11-20 00:05:54,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:05:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:05:55,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:05:55,023 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210936003] [2019-11-20 00:05:55,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 00:05:55,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 00:05:55,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623083227] [2019-11-20 00:05:55,028 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 00:05:55,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:05:55,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 00:05:55,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 00:05:55,042 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2019-11-20 00:05:55,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:05:55,076 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2019-11-20 00:05:55,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 00:05:55,079 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-20 00:05:55,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:05:55,086 INFO L225 Difference]: With dead ends: 13 [2019-11-20 00:05:55,086 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 00:05:55,089 INFO L630 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 [2019-11-20 00:05:55,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 00:05:55,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 00:05:55,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 00:05:55,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 00:05:55,110 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2019-11-20 00:05:55,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:05:55,111 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 00:05:55,111 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 00:05:55,111 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 00:05:55,111 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 00:05:55,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-20 00:05:55,135 INFO L440 ceAbstractionStarter]: At program point L3-2(lines 2 7) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2019-11-20 00:05:55,135 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-20 00:05:55,135 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-20 00:05:55,135 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-20 00:05:55,135 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-20 00:05:55,136 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2019-11-20 00:05:55,136 INFO L444 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2019-11-20 00:05:55,136 INFO L444 ceAbstractionStarter]: For program point L3(lines 3 5) no Hoare annotation was computed. [2019-11-20 00:05:55,136 INFO L440 ceAbstractionStarter]: At program point L34(lines 27 35) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2019-11-20 00:05:55,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 12:05:55 BoogieIcfgContainer [2019-11-20 00:05:55,159 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 00:05:55,159 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 00:05:55,159 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 00:05:55,159 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 00:05:55,160 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:05:54" (3/4) ... [2019-11-20 00:05:55,175 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 00:05:55,187 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-20 00:05:55,188 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-20 00:05:55,188 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-20 00:05:55,247 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d8b6c354-74ed-4b04-a0e3-e0984880a08c/bin/uautomizer/witness.graphml [2019-11-20 00:05:55,248 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 00:05:55,250 INFO L168 Benchmark]: Toolchain (without parser) took 1354.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -154.0 MB). Peak memory consumption was 1.8 MB. Max. memory is 11.5 GB. [2019-11-20 00:05:55,251 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:05:55,252 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -205.9 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-20 00:05:55,253 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.41 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:05:55,254 INFO L168 Benchmark]: Boogie Preprocessor took 43.61 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:05:55,255 INFO L168 Benchmark]: RCFGBuilder took 292.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-11-20 00:05:55,256 INFO L168 Benchmark]: TraceAbstraction took 512.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-11-20 00:05:55,257 INFO L168 Benchmark]: Witness Printer took 88.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-20 00:05:55,261 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 365.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -205.9 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 47.41 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 43.61 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 292.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 512.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Witness Printer took 88.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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: 2]: Loop Invariant Derived loop invariant: !(0 == cond) - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: !(0 == cond) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Result: SAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 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=9occurred 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, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 18 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...