./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test30-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 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/test30-2.c -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 3055aa5e8d0f7166c6199867c275abf60313262b8446d59ec5e54caabc9c66a5 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 10:43:45,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 10:43:45,078 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 10:43:45,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 10:43:45,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 10:43:45,131 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 10:43:45,133 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 10:43:45,136 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 10:43:45,138 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 10:43:45,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 10:43:45,141 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 10:43:45,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 10:43:45,143 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 10:43:45,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 10:43:45,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 10:43:45,151 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 10:43:45,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 10:43:45,155 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 10:43:45,156 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 10:43:45,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 10:43:45,163 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 10:43:45,164 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 10:43:45,165 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 10:43:45,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 10:43:45,167 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 10:43:45,168 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 10:43:45,168 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 10:43:45,169 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 10:43:45,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 10:43:45,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 10:43:45,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 10:43:45,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 10:43:45,171 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 10:43:45,172 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 10:43:45,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 10:43:45,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 10:43:45,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 10:43:45,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 10:43:45,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 10:43:45,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 10:43:45,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 10:43:45,176 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 10:43:45,197 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 10:43:45,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 10:43:45,204 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 10:43:45,204 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 10:43:45,205 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 10:43:45,205 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 10:43:45,205 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 10:43:45,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 10:43:45,206 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 10:43:45,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 10:43:45,207 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 10:43:45,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 10:43:45,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 10:43:45,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 10:43:45,208 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 10:43:45,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 10:43:45,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 10:43:45,208 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 10:43:45,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 10:43:45,209 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 10:43:45,209 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 10:43:45,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 10:43:45,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 10:43:45,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 10:43:45,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:43:45,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 10:43:45,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 10:43:45,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 10:43:45,210 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 10:43:45,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 10:43:45,211 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 10:43:45,211 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 10:43:45,211 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 10:43:45,212 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 10:43:45,212 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3055aa5e8d0f7166c6199867c275abf60313262b8446d59ec5e54caabc9c66a5 [2021-12-15 10:43:45,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 10:43:45,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 10:43:45,450 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 10:43:45,451 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 10:43:45,452 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 10:43:45,453 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test30-2.c [2021-12-15 10:43:45,523 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2619bc34b/6b585ba13f7d42148d259b286302fae8/FLAGe56c8b960 [2021-12-15 10:43:45,949 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 10:43:45,950 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test30-2.c [2021-12-15 10:43:45,959 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2619bc34b/6b585ba13f7d42148d259b286302fae8/FLAGe56c8b960 [2021-12-15 10:43:45,978 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2619bc34b/6b585ba13f7d42148d259b286302fae8 [2021-12-15 10:43:45,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 10:43:45,982 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 10:43:45,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 10:43:45,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 10:43:45,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 10:43:45,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:43:45" (1/1) ... [2021-12-15 10:43:45,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f1d31df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:43:45, skipping insertion in model container [2021-12-15 10:43:45,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:43:45" (1/1) ... [2021-12-15 10:43:45,993 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 10:43:46,006 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 10:43:46,176 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test30-2.c[560,573] [2021-12-15 10:43:46,184 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:43:46,193 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 10:43:46,208 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test30-2.c[560,573] [2021-12-15 10:43:46,209 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:43:46,223 INFO L208 MainTranslator]: Completed translation [2021-12-15 10:43:46,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:43:46 WrapperNode [2021-12-15 10:43:46,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 10:43:46,226 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 10:43:46,226 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 10:43:46,227 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 10:43:46,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:43:46" (1/1) ... [2021-12-15 10:43:46,240 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:43:46" (1/1) ... [2021-12-15 10:43:46,254 INFO L137 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 49 [2021-12-15 10:43:46,255 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 10:43:46,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 10:43:46,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 10:43:46,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 10:43:46,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:43:46" (1/1) ... [2021-12-15 10:43:46,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:43:46" (1/1) ... [2021-12-15 10:43:46,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:43:46" (1/1) ... [2021-12-15 10:43:46,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:43:46" (1/1) ... [2021-12-15 10:43:46,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:43:46" (1/1) ... [2021-12-15 10:43:46,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:43:46" (1/1) ... [2021-12-15 10:43:46,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:43:46" (1/1) ... [2021-12-15 10:43:46,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 10:43:46,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 10:43:46,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 10:43:46,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 10:43:46,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:43:46" (1/1) ... [2021-12-15 10:43:46,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:43:46,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:43:46,295 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 10:43:46,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 10:43:46,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 10:43:46,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-15 10:43:46,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 10:43:46,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 10:43:46,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 10:43:46,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 10:43:46,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 10:43:46,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 10:43:46,384 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 10:43:46,386 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 10:43:46,458 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 10:43:46,462 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 10:43:46,463 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-15 10:43:46,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:43:46 BoogieIcfgContainer [2021-12-15 10:43:46,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 10:43:46,466 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 10:43:46,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 10:43:46,469 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 10:43:46,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 10:43:45" (1/3) ... [2021-12-15 10:43:46,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7de0945e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:43:46, skipping insertion in model container [2021-12-15 10:43:46,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:43:46" (2/3) ... [2021-12-15 10:43:46,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7de0945e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:43:46, skipping insertion in model container [2021-12-15 10:43:46,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:43:46" (3/3) ... [2021-12-15 10:43:46,472 INFO L111 eAbstractionObserver]: Analyzing ICFG test30-2.c [2021-12-15 10:43:46,476 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 10:43:46,477 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 10:43:46,511 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 10:43:46,517 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 10:43:46,518 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 10:43:46,531 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:43:46,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-15 10:43:46,539 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:43:46,539 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-15 10:43:46,540 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:43:46,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:43:46,550 INFO L85 PathProgramCache]: Analyzing trace with hash 889475945, now seen corresponding path program 1 times [2021-12-15 10:43:46,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:43:46,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029551259] [2021-12-15 10:43:46,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:43:46,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:43:46,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 10:43:46,719 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 10:43:46,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 10:43:46,795 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 10:43:46,798 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-15 10:43:46,800 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-15 10:43:46,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 10:43:46,806 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-12-15 10:43:46,809 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-15 10:43:46,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 10:43:46 BoogieIcfgContainer [2021-12-15 10:43:46,849 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-15 10:43:46,852 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-15 10:43:46,852 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-15 10:43:46,852 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-15 10:43:46,853 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:43:46" (3/4) ... [2021-12-15 10:43:46,855 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-15 10:43:46,908 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-15 10:43:46,909 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-15 10:43:46,910 INFO L158 Benchmark]: Toolchain (without parser) took 928.00ms. Allocated memory is still 115.3MB. Free memory was 86.4MB in the beginning and 58.9MB in the end (delta: 27.5MB). Peak memory consumption was 25.4MB. Max. memory is 16.1GB. [2021-12-15 10:43:46,911 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 115.3MB. Free memory is still 72.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:43:46,911 INFO L158 Benchmark]: CACSL2BoogieTranslator took 241.32ms. Allocated memory is still 115.3MB. Free memory was 86.3MB in the beginning and 88.8MB in the end (delta: -2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 10:43:46,912 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.85ms. Allocated memory is still 115.3MB. Free memory was 88.8MB in the beginning and 87.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 10:43:46,913 INFO L158 Benchmark]: Boogie Preprocessor took 13.89ms. Allocated memory is still 115.3MB. Free memory was 87.2MB in the beginning and 86.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:43:46,913 INFO L158 Benchmark]: RCFGBuilder took 194.75ms. Allocated memory is still 115.3MB. Free memory was 86.1MB in the beginning and 76.6MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 10:43:46,914 INFO L158 Benchmark]: TraceAbstraction took 383.17ms. Allocated memory is still 115.3MB. Free memory was 76.2MB in the beginning and 61.2MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-15 10:43:46,914 INFO L158 Benchmark]: Witness Printer took 57.35ms. Allocated memory is still 115.3MB. Free memory was 61.0MB in the beginning and 58.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 10:43:46,919 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 115.3MB. Free memory is still 72.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 241.32ms. Allocated memory is still 115.3MB. Free memory was 86.3MB in the beginning and 88.8MB in the end (delta: -2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.85ms. Allocated memory is still 115.3MB. Free memory was 88.8MB in the beginning and 87.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.89ms. Allocated memory is still 115.3MB. Free memory was 87.2MB in the beginning and 86.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 194.75ms. Allocated memory is still 115.3MB. Free memory was 86.1MB in the beginning and 76.6MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 383.17ms. Allocated memory is still 115.3MB. Free memory was 76.2MB in the beginning and 61.2MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 57.35ms. Allocated memory is still 115.3MB. Free memory was 61.0MB in the beginning and 58.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 33]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L5] int a = 1, b; [L7-L9] struct dummy { int *a, *b; } global = {&a, &b}; VAL [a={4:0}, b={5:0}, global={6:0}] [L23] struct dummy *pd = &global; [L25] CALL assign2(&pd->a, &pd->b) [L18] EXPR \read(**pb) [L18] EXPR \read(**pb) [L18] CALL assign(*pb, *pb) [L13] EXPR \read(*pb) [L13] *pa = *pb [L18] RET assign(*pb, *pb) [L25] RET assign2(&pd->a, &pd->b) [L27] EXPR \read(a) [L27] EXPR \read(b) VAL [\read(a)=1, \read(b)=0, a={4:0}, b={5:0}, global={6:0}, pd={6:0}] [L27] COND TRUE a != b [L33] reach_error() VAL [a={4:0}, b={5:0}, global={6:0}, pd={6:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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! [2021-12-15 10:43:46,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE