./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0158-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b 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-0158-2.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 71b5f65f2f8d87850f90a0c5b95ff806d4054a596ed67d86f7cc490935279607 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 19:36:43,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 19:36:43,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 19:36:43,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 19:36:43,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 19:36:43,445 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 19:36:43,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 19:36:43,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 19:36:43,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 19:36:43,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 19:36:43,454 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 19:36:43,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 19:36:43,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 19:36:43,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 19:36:43,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 19:36:43,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 19:36:43,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 19:36:43,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 19:36:43,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 19:36:43,469 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 19:36:43,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 19:36:43,470 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 19:36:43,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 19:36:43,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 19:36:43,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 19:36:43,477 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 19:36:43,477 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 19:36:43,478 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 19:36:43,478 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 19:36:43,479 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 19:36:43,479 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 19:36:43,480 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 19:36:43,481 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 19:36:43,482 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 19:36:43,483 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 19:36:43,483 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 19:36:43,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 19:36:43,483 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 19:36:43,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 19:36:43,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 19:36:43,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 19:36:43,485 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-14 19:36:43,508 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 19:36:43,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 19:36:43,509 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 19:36:43,509 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 19:36:43,510 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 19:36:43,510 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 19:36:43,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 19:36:43,510 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 19:36:43,511 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 19:36:43,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 19:36:43,511 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 19:36:43,511 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-14 19:36:43,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 19:36:43,512 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 19:36:43,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 19:36:43,512 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-14 19:36:43,512 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-14 19:36:43,512 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-14 19:36:43,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 19:36:43,513 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-14 19:36:43,513 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 19:36:43,513 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 19:36:43,513 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 19:36:43,513 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 19:36:43,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 19:36:43,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 19:36:43,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 19:36:43,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 19:36:43,515 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 19:36:43,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 19:36:43,515 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 19:36:43,515 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71b5f65f2f8d87850f90a0c5b95ff806d4054a596ed67d86f7cc490935279607 [2021-12-14 19:36:43,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 19:36:43,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 19:36:43,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 19:36:43,734 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 19:36:43,735 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 19:36:43,735 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0158-2.i [2021-12-14 19:36:43,784 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af1f0debd/be87ae7a5a7a4060924819bfc3debd4b/FLAG7dff9c989 [2021-12-14 19:36:44,129 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 19:36:44,129 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0158-2.i [2021-12-14 19:36:44,137 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af1f0debd/be87ae7a5a7a4060924819bfc3debd4b/FLAG7dff9c989 [2021-12-14 19:36:44,146 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af1f0debd/be87ae7a5a7a4060924819bfc3debd4b [2021-12-14 19:36:44,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 19:36:44,148 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 19:36:44,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 19:36:44,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 19:36:44,152 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 19:36:44,152 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:36:44" (1/1) ... [2021-12-14 19:36:44,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24f42d75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:36:44, skipping insertion in model container [2021-12-14 19:36:44,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:36:44" (1/1) ... [2021-12-14 19:36:44,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 19:36:44,176 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 19:36:44,388 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 19:36:44,394 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 19:36:44,430 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 19:36:44,448 INFO L208 MainTranslator]: Completed translation [2021-12-14 19:36:44,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:36:44 WrapperNode [2021-12-14 19:36:44,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 19:36:44,449 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 19:36:44,449 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 19:36:44,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 19:36:44,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:36:44" (1/1) ... [2021-12-14 19:36:44,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:36:44" (1/1) ... [2021-12-14 19:36:44,488 INFO L137 Inliner]: procedures = 123, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2021-12-14 19:36:44,489 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 19:36:44,489 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 19:36:44,489 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 19:36:44,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 19:36:44,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:36:44" (1/1) ... [2021-12-14 19:36:44,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:36:44" (1/1) ... [2021-12-14 19:36:44,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:36:44" (1/1) ... [2021-12-14 19:36:44,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:36:44" (1/1) ... [2021-12-14 19:36:44,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:36:44" (1/1) ... [2021-12-14 19:36:44,509 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:36:44" (1/1) ... [2021-12-14 19:36:44,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:36:44" (1/1) ... [2021-12-14 19:36:44,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 19:36:44,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 19:36:44,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 19:36:44,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 19:36:44,515 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:36:44" (1/1) ... [2021-12-14 19:36:44,519 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 19:36:44,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 19:36:44,598 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) [2021-12-14 19:36:44,614 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 [2021-12-14 19:36:44,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 19:36:44,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 19:36:44,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 19:36:44,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 19:36:44,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 19:36:44,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 19:36:44,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 19:36:44,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 19:36:44,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 19:36:44,709 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 19:36:44,710 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 19:36:44,789 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 19:36:44,793 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 19:36:44,794 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 19:36:44,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:36:44 BoogieIcfgContainer [2021-12-14 19:36:44,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 19:36:44,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 19:36:44,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 19:36:44,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 19:36:44,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:36:44" (1/3) ... [2021-12-14 19:36:44,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d2d531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:36:44, skipping insertion in model container [2021-12-14 19:36:44,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:36:44" (2/3) ... [2021-12-14 19:36:44,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d2d531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:36:44, skipping insertion in model container [2021-12-14 19:36:44,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:36:44" (3/3) ... [2021-12-14 19:36:44,802 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158-2.i [2021-12-14 19:36:44,805 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 19:36:44,806 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-12-14 19:36:44,832 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 19:36:44,836 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 [2021-12-14 19:36:44,837 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-12-14 19:36:44,853 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 16 states have internal predecessors, (16), 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) [2021-12-14 19:36:44,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-14 19:36:44,867 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:36:44,867 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-14 19:36:44,867 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-12-14 19:36:44,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:36:44,871 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-12-14 19:36:44,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:36:44,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320228910] [2021-12-14 19:36:44,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:36:44,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:36:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:36:45,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:36:45,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:36:45,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320228910] [2021-12-14 19:36:45,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320228910] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:36:45,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:36:45,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 19:36:45,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400252530] [2021-12-14 19:36:45,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:36:45,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 19:36:45,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:36:45,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 19:36:45,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:36:45,094 INFO L87 Difference]: Start difference. First operand has 17 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 16 states have internal predecessors, (16), 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) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-12-14 19:36:45,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:36:45,130 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2021-12-14 19:36:45,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 19:36:45,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2021-12-14 19:36:45,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:36:45,137 INFO L225 Difference]: With dead ends: 14 [2021-12-14 19:36:45,137 INFO L226 Difference]: Without dead ends: 12 [2021-12-14 19:36:45,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:36:45,144 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 7 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:36:45,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 7 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:36:45,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-12-14 19:36:45,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-12-14 19:36:45,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.375) internal successors, (11), 11 states have internal predecessors, (11), 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) [2021-12-14 19:36:45,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2021-12-14 19:36:45,166 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 3 [2021-12-14 19:36:45,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:36:45,166 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2021-12-14 19:36:45,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-12-14 19:36:45,167 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2021-12-14 19:36:45,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-14 19:36:45,167 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:36:45,167 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-14 19:36:45,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 19:36:45,168 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-12-14 19:36:45,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:36:45,170 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-12-14 19:36:45,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:36:45,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770159820] [2021-12-14 19:36:45,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:36:45,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:36:45,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:36:45,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:36:45,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:36:45,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770159820] [2021-12-14 19:36:45,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770159820] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:36:45,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:36:45,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 19:36:45,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407020534] [2021-12-14 19:36:45,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:36:45,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 19:36:45,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:36:45,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 19:36:45,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:36:45,253 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-12-14 19:36:45,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:36:45,264 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2021-12-14 19:36:45,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 19:36:45,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2021-12-14 19:36:45,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:36:45,265 INFO L225 Difference]: With dead ends: 9 [2021-12-14 19:36:45,265 INFO L226 Difference]: Without dead ends: 9 [2021-12-14 19:36:45,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:36:45,269 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:36:45,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 5 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:36:45,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-12-14 19:36:45,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-12-14 19:36:45,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 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) [2021-12-14 19:36:45,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-12-14 19:36:45,273 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 3 [2021-12-14 19:36:45,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:36:45,274 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-12-14 19:36:45,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-12-14 19:36:45,274 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-12-14 19:36:45,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-14 19:36:45,275 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:36:45,276 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:36:45,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 19:36:45,278 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-12-14 19:36:45,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:36:45,279 INFO L85 PathProgramCache]: Analyzing trace with hash 59200043, now seen corresponding path program 1 times [2021-12-14 19:36:45,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:36:45,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104428133] [2021-12-14 19:36:45,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:36:45,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:36:45,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 19:36:45,316 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 19:36:45,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 19:36:45,356 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 19:36:45,357 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-14 19:36:45,358 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (6 of 7 remaining) [2021-12-14 19:36:45,359 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (5 of 7 remaining) [2021-12-14 19:36:45,360 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (4 of 7 remaining) [2021-12-14 19:36:45,360 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (3 of 7 remaining) [2021-12-14 19:36:45,360 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (2 of 7 remaining) [2021-12-14 19:36:45,360 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (1 of 7 remaining) [2021-12-14 19:36:45,360 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (0 of 7 remaining) [2021-12-14 19:36:45,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 19:36:45,365 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-14 19:36:45,368 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-14 19:36:45,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 07:36:45 BoogieIcfgContainer [2021-12-14 19:36:45,387 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-14 19:36:45,388 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 19:36:45,388 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 19:36:45,388 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 19:36:45,388 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:36:44" (3/4) ... [2021-12-14 19:36:45,397 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-14 19:36:45,397 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 19:36:45,398 INFO L158 Benchmark]: Toolchain (without parser) took 1249.39ms. Allocated memory is still 132.1MB. Free memory was 100.2MB in the beginning and 97.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.4MB. Max. memory is 16.1GB. [2021-12-14 19:36:45,398 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 83.9MB. Free memory was 43.8MB in the beginning and 43.7MB in the end (delta: 36.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 19:36:45,398 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.03ms. Allocated memory is still 132.1MB. Free memory was 99.9MB in the beginning and 101.3MB in the end (delta: -1.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-14 19:36:45,399 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.98ms. Allocated memory is still 132.1MB. Free memory was 101.3MB in the beginning and 99.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 19:36:45,399 INFO L158 Benchmark]: Boogie Preprocessor took 21.05ms. Allocated memory is still 132.1MB. Free memory was 99.6MB in the beginning and 98.7MB in the end (delta: 967.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 19:36:45,399 INFO L158 Benchmark]: RCFGBuilder took 284.24ms. Allocated memory is still 132.1MB. Free memory was 98.2MB in the beginning and 88.3MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-14 19:36:45,400 INFO L158 Benchmark]: TraceAbstraction took 591.18ms. Allocated memory is still 132.1MB. Free memory was 87.8MB in the beginning and 97.5MB in the end (delta: -9.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 19:36:45,400 INFO L158 Benchmark]: Witness Printer took 9.76ms. Allocated memory is still 132.1MB. Free memory is still 97.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 19:36:45,401 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 83.9MB. Free memory was 43.8MB in the beginning and 43.7MB in the end (delta: 36.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 299.03ms. Allocated memory is still 132.1MB. Free memory was 99.9MB in the beginning and 101.3MB in the end (delta: -1.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.98ms. Allocated memory is still 132.1MB. Free memory was 101.3MB in the beginning and 99.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.05ms. Allocated memory is still 132.1MB. Free memory was 99.6MB in the beginning and 98.7MB in the end (delta: 967.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 284.24ms. Allocated memory is still 132.1MB. Free memory was 98.2MB in the beginning and 88.3MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 591.18ms. Allocated memory is still 132.1MB. Free memory was 87.8MB in the beginning and 97.5MB in the end (delta: -9.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 9.76ms. Allocated memory is still 132.1MB. Free memory is still 97.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 523]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 523. Possible FailurePath: [L525-L532] union { void *p0; struct { char c[2]; void *p1; void *p2; } str; } data; [L533] data.p0 = malloc(37U) VAL [data={3:0}, malloc(37U)={-1:0}] [L534] data.str.p2 = &data VAL [data={3:0}] [L535] data.str.c[1] = sizeof data.str.p1 VAL [data={3:0}] [L536] return 0; [L536] return 0; VAL [\result=0] - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17 IncrementalHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 10 mSDtfsCounter, 17 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-14 19:36:45,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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-0158-2.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 71b5f65f2f8d87850f90a0c5b95ff806d4054a596ed67d86f7cc490935279607 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 19:36:47,027 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 19:36:47,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 19:36:47,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 19:36:47,046 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 19:36:47,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 19:36:47,048 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 19:36:47,049 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 19:36:47,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 19:36:47,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 19:36:47,051 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 19:36:47,052 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 19:36:47,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 19:36:47,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 19:36:47,054 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 19:36:47,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 19:36:47,055 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 19:36:47,056 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 19:36:47,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 19:36:47,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 19:36:47,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 19:36:47,062 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 19:36:47,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 19:36:47,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 19:36:47,065 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 19:36:47,065 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 19:36:47,065 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 19:36:47,066 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 19:36:47,066 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 19:36:47,066 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 19:36:47,067 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 19:36:47,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 19:36:47,068 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 19:36:47,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 19:36:47,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 19:36:47,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 19:36:47,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 19:36:47,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 19:36:47,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 19:36:47,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 19:36:47,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 19:36:47,072 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-14 19:36:47,093 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 19:36:47,093 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 19:36:47,094 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 19:36:47,094 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 19:36:47,095 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 19:36:47,095 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 19:36:47,096 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 19:36:47,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 19:36:47,107 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 19:36:47,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 19:36:47,107 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 19:36:47,108 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-14 19:36:47,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 19:36:47,108 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 19:36:47,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 19:36:47,108 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-14 19:36:47,108 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-14 19:36:47,108 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-14 19:36:47,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 19:36:47,114 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-14 19:36:47,114 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-14 19:36:47,114 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-14 19:36:47,115 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 19:36:47,115 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 19:36:47,115 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 19:36:47,115 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 19:36:47,115 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 19:36:47,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 19:36:47,116 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 19:36:47,116 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 19:36:47,116 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-14 19:36:47,116 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-14 19:36:47,116 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 19:36:47,116 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-14 19:36:47,116 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71b5f65f2f8d87850f90a0c5b95ff806d4054a596ed67d86f7cc490935279607 [2021-12-14 19:36:47,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 19:36:47,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 19:36:47,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 19:36:47,401 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 19:36:47,402 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 19:36:47,403 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0158-2.i [2021-12-14 19:36:47,463 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da0928726/a50c4c0beb0b4ff7bda907376877539a/FLAGfce9e5aa4 [2021-12-14 19:36:47,855 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 19:36:47,856 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0158-2.i [2021-12-14 19:36:47,870 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da0928726/a50c4c0beb0b4ff7bda907376877539a/FLAGfce9e5aa4 [2021-12-14 19:36:47,882 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da0928726/a50c4c0beb0b4ff7bda907376877539a [2021-12-14 19:36:47,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 19:36:47,885 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 19:36:47,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 19:36:47,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 19:36:47,889 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 19:36:47,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:36:47" (1/1) ... [2021-12-14 19:36:47,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21af60fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:36:47, skipping insertion in model container [2021-12-14 19:36:47,890 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:36:47" (1/1) ... [2021-12-14 19:36:47,896 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 19:36:47,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 19:36:48,160 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 19:36:48,167 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 19:36:48,199 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 19:36:48,220 INFO L208 MainTranslator]: Completed translation [2021-12-14 19:36:48,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:36:48 WrapperNode [2021-12-14 19:36:48,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 19:36:48,222 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 19:36:48,222 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 19:36:48,222 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 19:36:48,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:36:48" (1/1) ... [2021-12-14 19:36:48,254 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:36:48" (1/1) ... [2021-12-14 19:36:48,267 INFO L137 Inliner]: procedures = 124, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2021-12-14 19:36:48,267 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 19:36:48,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 19:36:48,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 19:36:48,268 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 19:36:48,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:36:48" (1/1) ... [2021-12-14 19:36:48,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:36:48" (1/1) ... [2021-12-14 19:36:48,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:36:48" (1/1) ... [2021-12-14 19:36:48,277 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:36:48" (1/1) ... [2021-12-14 19:36:48,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:36:48" (1/1) ... [2021-12-14 19:36:48,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:36:48" (1/1) ... [2021-12-14 19:36:48,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:36:48" (1/1) ... [2021-12-14 19:36:48,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 19:36:48,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 19:36:48,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 19:36:48,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 19:36:48,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:36:48" (1/1) ... [2021-12-14 19:36:48,303 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 19:36:48,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 19:36:48,334 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) [2021-12-14 19:36:48,349 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 [2021-12-14 19:36:48,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 19:36:48,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 19:36:48,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 19:36:48,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 19:36:48,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-14 19:36:48,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 19:36:48,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-14 19:36:48,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 19:36:48,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 19:36:48,460 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 19:36:48,461 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 19:36:48,562 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 19:36:48,567 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 19:36:48,568 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 19:36:48,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:36:48 BoogieIcfgContainer [2021-12-14 19:36:48,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 19:36:48,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 19:36:48,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 19:36:48,578 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 19:36:48,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:36:47" (1/3) ... [2021-12-14 19:36:48,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37d7a168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:36:48, skipping insertion in model container [2021-12-14 19:36:48,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:36:48" (2/3) ... [2021-12-14 19:36:48,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37d7a168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:36:48, skipping insertion in model container [2021-12-14 19:36:48,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:36:48" (3/3) ... [2021-12-14 19:36:48,580 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158-2.i [2021-12-14 19:36:48,593 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 19:36:48,594 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-12-14 19:36:48,632 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 19:36:48,637 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 [2021-12-14 19:36:48,637 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-12-14 19:36:48,645 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 16 states have internal predecessors, (16), 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) [2021-12-14 19:36:48,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-14 19:36:48,649 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:36:48,649 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-14 19:36:48,650 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-12-14 19:36:48,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:36:48,653 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-12-14 19:36:48,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 19:36:48,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1760627190] [2021-12-14 19:36:48,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:36:48,661 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 19:36:48,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 19:36:48,663 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) [2021-12-14 19:36:48,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-14 19:36:48,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:36:48,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 19:36:48,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 19:36:48,771 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 19:36:48,784 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-14 19:36:48,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-12-14 19:36:48,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:36:48,802 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 19:36:48,802 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 19:36:48,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1760627190] [2021-12-14 19:36:48,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1760627190] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:36:48,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:36:48,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 19:36:48,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285558460] [2021-12-14 19:36:48,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:36:48,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 19:36:48,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 19:36:48,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 19:36:48,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:36:48,825 INFO L87 Difference]: Start difference. First operand has 17 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 16 states have internal predecessors, (16), 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) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-12-14 19:36:48,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:36:48,860 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2021-12-14 19:36:48,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 19:36:48,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2021-12-14 19:36:48,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:36:48,866 INFO L225 Difference]: With dead ends: 14 [2021-12-14 19:36:48,866 INFO L226 Difference]: Without dead ends: 12 [2021-12-14 19:36:48,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:36:48,870 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 7 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:36:48,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 7 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:36:48,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-12-14 19:36:48,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-12-14 19:36:48,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.375) internal successors, (11), 11 states have internal predecessors, (11), 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) [2021-12-14 19:36:48,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2021-12-14 19:36:48,889 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 3 [2021-12-14 19:36:48,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:36:48,889 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2021-12-14 19:36:48,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-12-14 19:36:48,890 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2021-12-14 19:36:48,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-14 19:36:48,890 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:36:48,890 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-14 19:36:48,907 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-14 19:36:49,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 19:36:49,098 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-12-14 19:36:49,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:36:49,098 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-12-14 19:36:49,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 19:36:49,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1955027445] [2021-12-14 19:36:49,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:36:49,099 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 19:36:49,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 19:36:49,109 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) [2021-12-14 19:36:49,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-14 19:36:49,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:36:49,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-14 19:36:49,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 19:36:49,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 19:36:49,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-14 19:36:49,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2021-12-14 19:36:49,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:36:49,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 19:36:49,299 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 19:36:49,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1955027445] [2021-12-14 19:36:49,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1955027445] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:36:49,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:36:49,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 19:36:49,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660988807] [2021-12-14 19:36:49,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:36:49,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 19:36:49,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 19:36:49,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 19:36:49,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:36:49,302 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-12-14 19:36:49,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:36:49,324 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2021-12-14 19:36:49,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 19:36:49,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2021-12-14 19:36:49,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:36:49,326 INFO L225 Difference]: With dead ends: 9 [2021-12-14 19:36:49,326 INFO L226 Difference]: Without dead ends: 9 [2021-12-14 19:36:49,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:36:49,327 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:36:49,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 5 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:36:49,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-12-14 19:36:49,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-12-14 19:36:49,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 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) [2021-12-14 19:36:49,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-12-14 19:36:49,332 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 3 [2021-12-14 19:36:49,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:36:49,332 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-12-14 19:36:49,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-12-14 19:36:49,333 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-12-14 19:36:49,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-14 19:36:49,333 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:36:49,333 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:36:49,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-14 19:36:49,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 19:36:49,534 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-12-14 19:36:49,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:36:49,535 INFO L85 PathProgramCache]: Analyzing trace with hash 59200043, now seen corresponding path program 1 times [2021-12-14 19:36:49,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 19:36:49,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21952088] [2021-12-14 19:36:49,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:36:49,536 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 19:36:49,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 19:36:49,537 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) [2021-12-14 19:36:49,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-14 19:36:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 19:36:49,614 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 19:36:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 19:36:49,650 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-14 19:36:49,650 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-14 19:36:49,651 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (6 of 7 remaining) [2021-12-14 19:36:49,652 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (5 of 7 remaining) [2021-12-14 19:36:49,652 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (4 of 7 remaining) [2021-12-14 19:36:49,653 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (3 of 7 remaining) [2021-12-14 19:36:49,653 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (2 of 7 remaining) [2021-12-14 19:36:49,653 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (1 of 7 remaining) [2021-12-14 19:36:49,653 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (0 of 7 remaining) [2021-12-14 19:36:49,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-14 19:36:49,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 19:36:49,856 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-14 19:36:49,858 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-14 19:36:49,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 07:36:49 BoogieIcfgContainer [2021-12-14 19:36:49,874 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-14 19:36:49,874 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 19:36:49,875 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 19:36:49,875 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 19:36:49,875 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:36:48" (3/4) ... [2021-12-14 19:36:49,877 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-14 19:36:49,877 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 19:36:49,878 INFO L158 Benchmark]: Toolchain (without parser) took 1992.28ms. Allocated memory was 71.3MB in the beginning and 100.7MB in the end (delta: 29.4MB). Free memory was 55.3MB in the beginning and 66.7MB in the end (delta: -11.3MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. [2021-12-14 19:36:49,878 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 71.3MB. Free memory is still 54.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 19:36:49,878 INFO L158 Benchmark]: CACSL2BoogieTranslator took 334.72ms. Allocated memory is still 71.3MB. Free memory was 55.2MB in the beginning and 48.4MB in the end (delta: 6.7MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. [2021-12-14 19:36:49,879 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.31ms. Allocated memory is still 71.3MB. Free memory was 48.4MB in the beginning and 46.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 19:36:49,879 INFO L158 Benchmark]: Boogie Preprocessor took 28.25ms. Allocated memory is still 71.3MB. Free memory was 46.6MB in the beginning and 45.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 19:36:49,879 INFO L158 Benchmark]: RCFGBuilder took 278.51ms. Allocated memory is still 71.3MB. Free memory was 45.4MB in the beginning and 34.8MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-14 19:36:49,882 INFO L158 Benchmark]: TraceAbstraction took 1297.94ms. Allocated memory was 71.3MB in the beginning and 100.7MB in the end (delta: 29.4MB). Free memory was 34.3MB in the beginning and 66.7MB in the end (delta: -32.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 19:36:49,882 INFO L158 Benchmark]: Witness Printer took 2.68ms. Allocated memory is still 100.7MB. Free memory is still 66.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 19:36:49,884 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 71.3MB. Free memory is still 54.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 334.72ms. Allocated memory is still 71.3MB. Free memory was 55.2MB in the beginning and 48.4MB in the end (delta: 6.7MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.31ms. Allocated memory is still 71.3MB. Free memory was 48.4MB in the beginning and 46.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.25ms. Allocated memory is still 71.3MB. Free memory was 46.6MB in the beginning and 45.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 278.51ms. Allocated memory is still 71.3MB. Free memory was 45.4MB in the beginning and 34.8MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1297.94ms. Allocated memory was 71.3MB in the beginning and 100.7MB in the end (delta: 29.4MB). Free memory was 34.3MB in the beginning and 66.7MB in the end (delta: -32.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.68ms. Allocated memory is still 100.7MB. Free memory is still 66.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 523]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 523. Possible FailurePath: [L525-L532] union { void *p0; struct { char c[2]; void *p1; void *p2; } str; } data; [L533] data.p0 = malloc(37U) VAL [data={13:0}, malloc(37U)={3:0}] [L534] data.str.p2 = &data VAL [data={13:0}] [L535] data.str.c[1] = sizeof data.str.p1 VAL [data={13:0}] [L536] return 0; [L536] return 0; VAL [\result=0] - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17 IncrementalHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 10 mSDtfsCounter, 17 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 SizeOfPredicates, 2 NumberOfNonLiveVariables, 60 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-14 19:36:49,908 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: UNKNOWN: Overapproximated counterexample