./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0217.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety/test-0217.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 163bc3b45d6f21a8e478003f84571178259b289b3d9717ecadbc4595fc507bec --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 14:00:24,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 14:00:24,254 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 14:00:24,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 14:00:24,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 14:00:24,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 14:00:24,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 14:00:24,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 14:00:24,309 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 14:00:24,314 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 14:00:24,314 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 14:00:24,316 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 14:00:24,316 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 14:00:24,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 14:00:24,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 14:00:24,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 14:00:24,325 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 14:00:24,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 14:00:24,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 14:00:24,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 14:00:24,334 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 14:00:24,335 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 14:00:24,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 14:00:24,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 14:00:24,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 14:00:24,343 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 14:00:24,344 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 14:00:24,345 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 14:00:24,346 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 14:00:24,347 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 14:00:24,348 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 14:00:24,349 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 14:00:24,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 14:00:24,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 14:00:24,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 14:00:24,352 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 14:00:24,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 14:00:24,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 14:00:24,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 14:00:24,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 14:00:24,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 14:00:24,358 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-15 14:00:24,390 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 14:00:24,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 14:00:24,391 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 14:00:24,391 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 14:00:24,391 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 14:00:24,392 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 14:00:24,392 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 14:00:24,392 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 14:00:24,393 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 14:00:24,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 14:00:24,393 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 14:00:24,393 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 14:00:24,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 14:00:24,394 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 14:00:24,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 14:00:24,394 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-15 14:00:24,394 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-15 14:00:24,394 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-15 14:00:24,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 14:00:24,395 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 14:00:24,395 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 14:00:24,395 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 14:00:24,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 14:00:24,395 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 14:00:24,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 14:00:24,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 14:00:24,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 14:00:24,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 14:00:24,396 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 14:00:24,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 14:00:24,397 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 14:00:24,397 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 163bc3b45d6f21a8e478003f84571178259b289b3d9717ecadbc4595fc507bec [2021-12-15 14:00:24,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 14:00:24,651 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 14:00:24,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 14:00:24,655 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 14:00:24,656 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 14:00:24,657 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0217.i [2021-12-15 14:00:24,713 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/697571faa/f19c6836036146aa967b17115ce1b438/FLAG8c0a6937b [2021-12-15 14:00:25,249 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 14:00:25,249 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0217.i [2021-12-15 14:00:25,268 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/697571faa/f19c6836036146aa967b17115ce1b438/FLAG8c0a6937b [2021-12-15 14:00:25,737 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/697571faa/f19c6836036146aa967b17115ce1b438 [2021-12-15 14:00:25,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 14:00:25,742 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 14:00:25,744 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 14:00:25,744 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 14:00:25,749 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 14:00:25,750 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 02:00:25" (1/1) ... [2021-12-15 14:00:25,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@843ee55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:00:25, skipping insertion in model container [2021-12-15 14:00:25,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 02:00:25" (1/1) ... [2021-12-15 14:00:25,756 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 14:00:25,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 14:00:26,120 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 14:00:26,127 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 14:00:26,166 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 14:00:26,196 INFO L208 MainTranslator]: Completed translation [2021-12-15 14:00:26,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:00:26 WrapperNode [2021-12-15 14:00:26,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 14:00:26,198 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 14:00:26,198 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 14:00:26,198 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 14:00:26,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:00:26" (1/1) ... [2021-12-15 14:00:26,221 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:00:26" (1/1) ... [2021-12-15 14:00:26,255 INFO L137 Inliner]: procedures = 181, calls = 47, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 218 [2021-12-15 14:00:26,261 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 14:00:26,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 14:00:26,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 14:00:26,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 14:00:26,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:00:26" (1/1) ... [2021-12-15 14:00:26,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:00:26" (1/1) ... [2021-12-15 14:00:26,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:00:26" (1/1) ... [2021-12-15 14:00:26,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:00:26" (1/1) ... [2021-12-15 14:00:26,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:00:26" (1/1) ... [2021-12-15 14:00:26,301 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:00:26" (1/1) ... [2021-12-15 14:00:26,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:00:26" (1/1) ... [2021-12-15 14:00:26,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 14:00:26,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 14:00:26,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 14:00:26,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 14:00:26,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:00:26" (1/1) ... [2021-12-15 14:00:26,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 14:00:26,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:00:26,348 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 14:00:26,361 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 14:00:26,380 INFO L130 BoogieDeclarations]: Found specification of procedure rand_end_point [2021-12-15 14:00:26,380 INFO L138 BoogieDeclarations]: Found implementation of procedure rand_end_point [2021-12-15 14:00:26,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 14:00:26,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 14:00:26,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 14:00:26,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 14:00:26,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 14:00:26,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 14:00:26,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-15 14:00:26,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 14:00:26,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 14:00:26,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 14:00:26,508 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 14:00:26,510 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 14:00:26,889 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 14:00:26,898 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 14:00:26,898 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-15 14:00:26,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 02:00:26 BoogieIcfgContainer [2021-12-15 14:00:26,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 14:00:26,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 14:00:26,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 14:00:26,906 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 14:00:26,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 02:00:25" (1/3) ... [2021-12-15 14:00:26,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ba75a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 02:00:26, skipping insertion in model container [2021-12-15 14:00:26,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:00:26" (2/3) ... [2021-12-15 14:00:26,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ba75a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 02:00:26, skipping insertion in model container [2021-12-15 14:00:26,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 02:00:26" (3/3) ... [2021-12-15 14:00:26,909 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0217.i [2021-12-15 14:00:26,914 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 14:00:26,914 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 67 error locations. [2021-12-15 14:00:26,959 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 14:00:26,964 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 14:00:26,965 INFO L340 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2021-12-15 14:00:26,981 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 100 states have (on average 1.94) internal successors, (194), 167 states have internal predecessors, (194), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-15 14:00:26,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-15 14:00:26,988 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:26,988 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-15 14:00:26,989 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr59REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-15 14:00:26,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:26,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1074949738, now seen corresponding path program 1 times [2021-12-15 14:00:27,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:27,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110366210] [2021-12-15 14:00:27,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:27,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:27,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:27,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:27,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:27,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110366210] [2021-12-15 14:00:27,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110366210] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:00:27,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:00:27,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 14:00:27,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238317543] [2021-12-15 14:00:27,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:00:27,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 14:00:27,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:27,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 14:00:27,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 14:00:27,147 INFO L87 Difference]: Start difference. First operand has 171 states, 100 states have (on average 1.94) internal successors, (194), 167 states have internal predecessors, (194), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 14:00:27,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:27,182 INFO L93 Difference]: Finished difference Result 171 states and 192 transitions. [2021-12-15 14:00:27,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 14:00:27,184 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) Word has length 6 [2021-12-15 14:00:27,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:27,209 INFO L225 Difference]: With dead ends: 171 [2021-12-15 14:00:27,209 INFO L226 Difference]: Without dead ends: 169 [2021-12-15 14:00:27,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 14:00:27,215 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:27,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:00:27,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-12-15 14:00:27,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2021-12-15 14:00:27,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 99 states have (on average 1.878787878787879) internal successors, (186), 165 states have internal predecessors, (186), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-15 14:00:27,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 190 transitions. [2021-12-15 14:00:27,252 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 190 transitions. Word has length 6 [2021-12-15 14:00:27,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:27,253 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 190 transitions. [2021-12-15 14:00:27,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 14:00:27,253 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 190 transitions. [2021-12-15 14:00:27,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-15 14:00:27,253 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:27,253 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:27,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 14:00:27,254 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr59REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-15 14:00:27,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:27,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1280317330, now seen corresponding path program 1 times [2021-12-15 14:00:27,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:27,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888809660] [2021-12-15 14:00:27,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:27,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:27,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:27,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:27,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:27,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888809660] [2021-12-15 14:00:27,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888809660] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:00:27,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:00:27,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-15 14:00:27,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569130407] [2021-12-15 14:00:27,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:00:27,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:00:27,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:27,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:00:27,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:00:27,323 INFO L87 Difference]: Start difference. First operand 169 states and 190 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 14:00:27,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:27,541 INFO L93 Difference]: Finished difference Result 329 states and 370 transitions. [2021-12-15 14:00:27,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:00:27,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) Word has length 7 [2021-12-15 14:00:27,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:27,549 INFO L225 Difference]: With dead ends: 329 [2021-12-15 14:00:27,549 INFO L226 Difference]: Without dead ends: 329 [2021-12-15 14:00:27,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:00:27,555 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 171 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:27,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 249 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 14:00:27,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-12-15 14:00:27,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 233. [2021-12-15 14:00:27,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 160 states have (on average 1.8625) internal successors, (298), 226 states have internal predecessors, (298), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-15 14:00:27,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 306 transitions. [2021-12-15 14:00:27,588 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 306 transitions. Word has length 7 [2021-12-15 14:00:27,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:27,589 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 306 transitions. [2021-12-15 14:00:27,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 14:00:27,590 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 306 transitions. [2021-12-15 14:00:27,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-15 14:00:27,593 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:27,593 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:27,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 14:00:27,594 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-15 14:00:27,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:27,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1280317329, now seen corresponding path program 1 times [2021-12-15 14:00:27,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:27,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404121032] [2021-12-15 14:00:27,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:27,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:27,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:27,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:27,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:27,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404121032] [2021-12-15 14:00:27,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404121032] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:00:27,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:00:27,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 14:00:27,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797036497] [2021-12-15 14:00:27,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:00:27,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 14:00:27,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:27,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 14:00:27,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 14:00:27,699 INFO L87 Difference]: Start difference. First operand 233 states and 306 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 14:00:27,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 14:00:27,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 14:00:27,738 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 47 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:27,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 48 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:00:27,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-15 14:00:27,741 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructOldVarsAssignment(OldVarsAssignmentCache.java:125) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getOldVarsAssignment(OldVarsAssignmentCache.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:387) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkReturn(IncrementalHoareTripleChecker.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkReturn(ChainingHoareTripleChecker.java:486) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkReturn(ChainingHoareTripleChecker.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkReturn(CachingHoareTripleChecker.java:153) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$ReturnSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:442) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.returnSuccessors(AbstractInterpolantAutomaton.java:279) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.returnSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.returnSuccessors(TotalizeNwa.java:308) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.returnSuccessors(ComplementDeterministicNwa.java:142) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.returnSuccessors(ProductNwa.java:284) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.returnSuccessorsGivenHier(ProductNwa.java:308) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addReturnsAndSuccessors(NestedWordAutomatonReachableStates.java:1118) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:950) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 14:00:27,753 INFO L158 Benchmark]: Toolchain (without parser) took 2011.02ms. Allocated memory was 94.4MB in the beginning and 119.5MB in the end (delta: 25.2MB). Free memory was 62.6MB in the beginning and 61.3MB in the end (delta: 1.3MB). Peak memory consumption was 25.8MB. Max. memory is 16.1GB. [2021-12-15 14:00:27,754 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 94.4MB. Free memory is still 51.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 14:00:27,754 INFO L158 Benchmark]: CACSL2BoogieTranslator took 452.83ms. Allocated memory is still 94.4MB. Free memory was 62.4MB in the beginning and 58.4MB in the end (delta: 4.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-15 14:00:27,758 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.30ms. Allocated memory is still 94.4MB. Free memory was 58.4MB in the beginning and 55.6MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 14:00:27,759 INFO L158 Benchmark]: Boogie Preprocessor took 53.01ms. Allocated memory is still 94.4MB. Free memory was 55.6MB in the beginning and 53.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 14:00:27,759 INFO L158 Benchmark]: RCFGBuilder took 585.68ms. Allocated memory was 94.4MB in the beginning and 119.5MB in the end (delta: 25.2MB). Free memory was 53.3MB in the beginning and 77.2MB in the end (delta: -23.9MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. [2021-12-15 14:00:27,760 INFO L158 Benchmark]: TraceAbstraction took 849.39ms. Allocated memory is still 119.5MB. Free memory was 76.7MB in the beginning and 61.3MB in the end (delta: 15.5MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2021-12-15 14:00:27,761 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 94.4MB. Free memory is still 51.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 452.83ms. Allocated memory is still 94.4MB. Free memory was 62.4MB in the beginning and 58.4MB in the end (delta: 4.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.30ms. Allocated memory is still 94.4MB. Free memory was 58.4MB in the beginning and 55.6MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.01ms. Allocated memory is still 94.4MB. Free memory was 55.6MB in the beginning and 53.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 585.68ms. Allocated memory was 94.4MB in the beginning and 119.5MB in the end (delta: 25.2MB). Free memory was 53.3MB in the beginning and 77.2MB in the end (delta: -23.9MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. * TraceAbstraction took 849.39ms. Allocated memory is still 119.5MB. Free memory was 76.7MB in the beginning and 61.3MB in the end (delta: 15.5MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 14:00:27,801 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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety/test-0217.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 163bc3b45d6f21a8e478003f84571178259b289b3d9717ecadbc4595fc507bec --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 14:00:29,761 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 14:00:29,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 14:00:29,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 14:00:29,803 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 14:00:29,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 14:00:29,808 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 14:00:29,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 14:00:29,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 14:00:29,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 14:00:29,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 14:00:29,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 14:00:29,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 14:00:29,827 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 14:00:29,829 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 14:00:29,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 14:00:29,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 14:00:29,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 14:00:29,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 14:00:29,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 14:00:29,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 14:00:29,845 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 14:00:29,846 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 14:00:29,847 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 14:00:29,853 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 14:00:29,854 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 14:00:29,854 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 14:00:29,856 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 14:00:29,856 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 14:00:29,857 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 14:00:29,858 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 14:00:29,858 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 14:00:29,860 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 14:00:29,860 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 14:00:29,862 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 14:00:29,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 14:00:29,862 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 14:00:29,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 14:00:29,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 14:00:29,864 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 14:00:29,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 14:00:29,869 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-15 14:00:29,906 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 14:00:29,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 14:00:29,907 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 14:00:29,908 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 14:00:29,908 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 14:00:29,909 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 14:00:29,910 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 14:00:29,910 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 14:00:29,910 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 14:00:29,911 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 14:00:29,911 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 14:00:29,912 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 14:00:29,912 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 14:00:29,912 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 14:00:29,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 14:00:29,912 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-15 14:00:29,912 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-15 14:00:29,912 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-15 14:00:29,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 14:00:29,912 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 14:00:29,913 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 14:00:29,913 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 14:00:29,913 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 14:00:29,913 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 14:00:29,918 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 14:00:29,919 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 14:00:29,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 14:00:29,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 14:00:29,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 14:00:29,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 14:00:29,920 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 14:00:29,920 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 14:00:29,920 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 14:00:29,920 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 14:00:29,921 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 163bc3b45d6f21a8e478003f84571178259b289b3d9717ecadbc4595fc507bec [2021-12-15 14:00:30,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 14:00:30,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 14:00:30,274 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 14:00:30,274 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 14:00:30,275 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 14:00:30,276 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0217.i [2021-12-15 14:00:30,338 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cce749d1/ffbdbf0997c7452b910cb667808f5a66/FLAGaebf9e135 [2021-12-15 14:00:30,848 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 14:00:30,849 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0217.i [2021-12-15 14:00:30,865 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cce749d1/ffbdbf0997c7452b910cb667808f5a66/FLAGaebf9e135 [2021-12-15 14:00:31,133 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cce749d1/ffbdbf0997c7452b910cb667808f5a66 [2021-12-15 14:00:31,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 14:00:31,137 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 14:00:31,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 14:00:31,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 14:00:31,145 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 14:00:31,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 02:00:31" (1/1) ... [2021-12-15 14:00:31,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c18942f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:00:31, skipping insertion in model container [2021-12-15 14:00:31,148 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 02:00:31" (1/1) ... [2021-12-15 14:00:31,153 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 14:00:31,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 14:00:31,526 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 14:00:31,536 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 14:00:31,607 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 14:00:31,643 INFO L208 MainTranslator]: Completed translation [2021-12-15 14:00:31,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:00:31 WrapperNode [2021-12-15 14:00:31,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 14:00:31,645 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 14:00:31,645 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 14:00:31,645 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 14:00:31,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:00:31" (1/1) ... [2021-12-15 14:00:31,666 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:00:31" (1/1) ... [2021-12-15 14:00:31,707 INFO L137 Inliner]: procedures = 182, calls = 47, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 206 [2021-12-15 14:00:31,709 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 14:00:31,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 14:00:31,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 14:00:31,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 14:00:31,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:00:31" (1/1) ... [2021-12-15 14:00:31,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:00:31" (1/1) ... [2021-12-15 14:00:31,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:00:31" (1/1) ... [2021-12-15 14:00:31,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:00:31" (1/1) ... [2021-12-15 14:00:31,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:00:31" (1/1) ... [2021-12-15 14:00:31,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:00:31" (1/1) ... [2021-12-15 14:00:31,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:00:31" (1/1) ... [2021-12-15 14:00:31,762 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 14:00:31,763 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 14:00:31,763 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 14:00:31,763 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 14:00:31,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:00:31" (1/1) ... [2021-12-15 14:00:31,781 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 14:00:31,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:00:31,805 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 14:00:31,807 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 14:00:31,835 INFO L130 BoogieDeclarations]: Found specification of procedure rand_end_point [2021-12-15 14:00:31,836 INFO L138 BoogieDeclarations]: Found implementation of procedure rand_end_point [2021-12-15 14:00:31,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 14:00:31,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 14:00:31,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 14:00:31,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 14:00:31,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-15 14:00:31,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 14:00:31,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-15 14:00:31,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 14:00:31,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 14:00:31,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 14:00:32,016 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 14:00:32,017 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 14:00:32,648 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 14:00:32,653 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 14:00:32,655 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-15 14:00:32,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 02:00:32 BoogieIcfgContainer [2021-12-15 14:00:32,658 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 14:00:32,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 14:00:32,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 14:00:32,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 14:00:32,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 02:00:31" (1/3) ... [2021-12-15 14:00:32,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4085f4f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 02:00:32, skipping insertion in model container [2021-12-15 14:00:32,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:00:31" (2/3) ... [2021-12-15 14:00:32,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4085f4f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 02:00:32, skipping insertion in model container [2021-12-15 14:00:32,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 02:00:32" (3/3) ... [2021-12-15 14:00:32,666 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0217.i [2021-12-15 14:00:32,671 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 14:00:32,671 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 67 error locations. [2021-12-15 14:00:32,707 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 14:00:32,712 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 14:00:32,712 INFO L340 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2021-12-15 14:00:32,726 INFO L276 IsEmpty]: Start isEmpty. Operand has 165 states, 94 states have (on average 1.9893617021276595) internal successors, (187), 161 states have internal predecessors, (187), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-15 14:00:32,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-15 14:00:32,732 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:32,732 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-15 14:00:32,733 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr59REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-15 14:00:32,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:32,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1045058442, now seen corresponding path program 1 times [2021-12-15 14:00:32,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 14:00:32,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1759738579] [2021-12-15 14:00:32,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:32,750 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 14:00:32,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 14:00:32,752 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 14:00:32,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 14:00:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:32,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-15 14:00:32,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:00:32,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:32,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 14:00:32,850 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 14:00:32,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1759738579] [2021-12-15 14:00:32,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1759738579] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:00:32,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:00:32,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 14:00:32,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127009620] [2021-12-15 14:00:32,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:00:32,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 14:00:32,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 14:00:32,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 14:00:32,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 14:00:32,885 INFO L87 Difference]: Start difference. First operand has 165 states, 94 states have (on average 1.9893617021276595) internal successors, (187), 161 states have internal predecessors, (187), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 14:00:32,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:32,920 INFO L93 Difference]: Finished difference Result 165 states and 185 transitions. [2021-12-15 14:00:32,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 14:00:32,922 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) Word has length 6 [2021-12-15 14:00:32,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:32,933 INFO L225 Difference]: With dead ends: 165 [2021-12-15 14:00:32,933 INFO L226 Difference]: Without dead ends: 163 [2021-12-15 14:00:32,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 14:00:32,939 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:32,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:00:32,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-12-15 14:00:32,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-12-15 14:00:32,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 93 states have (on average 1.924731182795699) internal successors, (179), 159 states have internal predecessors, (179), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-15 14:00:32,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 183 transitions. [2021-12-15 14:00:32,980 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 183 transitions. Word has length 6 [2021-12-15 14:00:32,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:32,980 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 183 transitions. [2021-12-15 14:00:32,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 14:00:32,980 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 183 transitions. [2021-12-15 14:00:32,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-15 14:00:32,981 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:32,981 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-15 14:00:32,988 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-15 14:00:33,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 14:00:33,182 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr59REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-15 14:00:33,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:33,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1037789438, now seen corresponding path program 1 times [2021-12-15 14:00:33,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 14:00:33,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [222436027] [2021-12-15 14:00:33,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:33,184 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 14:00:33,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 14:00:33,185 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 14:00:33,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-15 14:00:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:33,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 14:00:33,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:00:33,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:33,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 14:00:33,317 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 14:00:33,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [222436027] [2021-12-15 14:00:33,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [222436027] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:00:33,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:00:33,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-15 14:00:33,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708288340] [2021-12-15 14:00:33,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:00:33,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:00:33,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 14:00:33,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:00:33,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:00:33,321 INFO L87 Difference]: Start difference. First operand 163 states and 183 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 14:00:33,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:33,795 INFO L93 Difference]: Finished difference Result 317 states and 356 transitions. [2021-12-15 14:00:33,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:00:33,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) Word has length 6 [2021-12-15 14:00:33,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:33,799 INFO L225 Difference]: With dead ends: 317 [2021-12-15 14:00:33,800 INFO L226 Difference]: Without dead ends: 317 [2021-12-15 14:00:33,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:00:33,801 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 165 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:33,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 235 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-15 14:00:33,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-12-15 14:00:33,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 221. [2021-12-15 14:00:33,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 148 states have (on average 1.9189189189189189) internal successors, (284), 214 states have internal predecessors, (284), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-15 14:00:33,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 292 transitions. [2021-12-15 14:00:33,829 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 292 transitions. Word has length 6 [2021-12-15 14:00:33,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:33,829 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 292 transitions. [2021-12-15 14:00:33,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 14:00:33,830 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 292 transitions. [2021-12-15 14:00:33,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-15 14:00:33,830 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:33,830 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-15 14:00:33,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-15 14:00:34,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 14:00:34,031 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-15 14:00:34,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:34,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1037789439, now seen corresponding path program 1 times [2021-12-15 14:00:34,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 14:00:34,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [213393053] [2021-12-15 14:00:34,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:34,033 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 14:00:34,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 14:00:34,034 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 14:00:34,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-15 14:00:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:34,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-15 14:00:34,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:00:34,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:34,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 14:00:34,169 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 14:00:34,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [213393053] [2021-12-15 14:00:34,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [213393053] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:00:34,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:00:34,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 14:00:34,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56346376] [2021-12-15 14:00:34,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:00:34,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 14:00:34,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 14:00:34,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 14:00:34,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 14:00:34,176 INFO L87 Difference]: Start difference. First operand 221 states and 292 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 14:00:34,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 14:00:34,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 14:00:34,195 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 20 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:34,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 28 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:00:34,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-15 14:00:34,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 14:00:34,408 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructOldVarsAssignment(OldVarsAssignmentCache.java:125) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getOldVarsAssignment(OldVarsAssignmentCache.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:387) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkReturn(IncrementalHoareTripleChecker.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkReturn(ChainingHoareTripleChecker.java:486) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkReturn(ChainingHoareTripleChecker.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkReturn(CachingHoareTripleChecker.java:153) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$ReturnSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:442) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.returnSuccessors(AbstractInterpolantAutomaton.java:279) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.returnSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.returnSuccessors(TotalizeNwa.java:308) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.returnSuccessors(ComplementDeterministicNwa.java:142) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.returnSuccessors(ProductNwa.java:284) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.returnSuccessorsGivenHier(ProductNwa.java:308) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addReturnsAndSuccessors(NestedWordAutomatonReachableStates.java:1118) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:950) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 14:00:34,413 INFO L158 Benchmark]: Toolchain (without parser) took 3274.77ms. Allocated memory was 54.5MB in the beginning and 81.8MB in the end (delta: 27.3MB). Free memory was 30.2MB in the beginning and 57.3MB in the end (delta: -27.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 14:00:34,413 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 54.5MB. Free memory was 36.6MB in the beginning and 36.5MB in the end (delta: 38.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 14:00:34,414 INFO L158 Benchmark]: CACSL2BoogieTranslator took 506.19ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 30.0MB in the beginning and 37.8MB in the end (delta: -7.8MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2021-12-15 14:00:34,414 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.43ms. Allocated memory is still 67.1MB. Free memory was 37.8MB in the beginning and 35.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 14:00:34,415 INFO L158 Benchmark]: Boogie Preprocessor took 52.46ms. Allocated memory is still 67.1MB. Free memory was 35.0MB in the beginning and 47.1MB in the end (delta: -12.2MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2021-12-15 14:00:34,415 INFO L158 Benchmark]: RCFGBuilder took 894.97ms. Allocated memory is still 67.1MB. Free memory was 47.1MB in the beginning and 35.3MB in the end (delta: 11.8MB). Peak memory consumption was 21.5MB. Max. memory is 16.1GB. [2021-12-15 14:00:34,416 INFO L158 Benchmark]: TraceAbstraction took 1752.05ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 34.8MB in the beginning and 57.3MB in the end (delta: -22.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 14:00:34,418 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 54.5MB. Free memory was 36.6MB in the beginning and 36.5MB in the end (delta: 38.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 506.19ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 30.0MB in the beginning and 37.8MB in the end (delta: -7.8MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.43ms. Allocated memory is still 67.1MB. Free memory was 37.8MB in the beginning and 35.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.46ms. Allocated memory is still 67.1MB. Free memory was 35.0MB in the beginning and 47.1MB in the end (delta: -12.2MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. * RCFGBuilder took 894.97ms. Allocated memory is still 67.1MB. Free memory was 47.1MB in the beginning and 35.3MB in the end (delta: 11.8MB). Peak memory consumption was 21.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1752.05ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 34.8MB in the beginning and 57.3MB in the end (delta: -22.6MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 14:00:34,459 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 Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable