./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74e9b87-8f2d-472f-b75c-b4d77046ca0a/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74e9b87-8f2d-472f-b75c-b4d77046ca0a/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74e9b87-8f2d-472f-b75c-b4d77046ca0a/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74e9b87-8f2d-472f-b75c-b4d77046ca0a/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74e9b87-8f2d-472f-b75c-b4d77046ca0a/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74e9b87-8f2d-472f-b75c-b4d77046ca0a/bin/uautomizer-UnR33cPsHg --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 64bit --witnessprinter.graph.data.programhash 32689ae30ae51ecba7c5b43dcb93819b27d0e14fbdff3ab2701407818eca0145 ............................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:34:40,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:34:40,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:34:40,927 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:34:40,928 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:34:40,934 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:34:40,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:34:40,943 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:34:40,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:34:40,953 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:34:40,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:34:40,956 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:34:40,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:34:40,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:34:40,962 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:34:40,967 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:34:40,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:34:40,970 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:34:40,976 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:34:40,980 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:34:40,985 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:34:40,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:34:40,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:34:40,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:34:40,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:34:40,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:34:40,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:34:41,000 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:34:41,001 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:34:41,003 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:34:41,003 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:34:41,004 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:34:41,006 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:34:41,007 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:34:41,008 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:34:41,009 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:34:41,009 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:34:41,010 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:34:41,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:34:41,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:34:41,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:34:41,012 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74e9b87-8f2d-472f-b75c-b4d77046ca0a/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2021-10-28 09:34:41,059 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:34:41,059 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:34:41,060 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:34:41,060 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:34:41,068 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:34:41,068 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:34:41,068 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:34:41,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:34:41,069 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:34:41,069 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:34:41,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:34:41,071 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:34:41,071 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:34:41,071 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 09:34:41,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:34:41,071 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:34:41,072 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:34:41,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:34:41,072 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:34:41,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:34:41,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:34:41,073 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:34:41,073 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:34:41,073 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:34:41,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:34:41,074 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:34:41,074 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74e9b87-8f2d-472f-b75c-b4d77046ca0a/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74e9b87-8f2d-472f-b75c-b4d77046ca0a/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32689ae30ae51ecba7c5b43dcb93819b27d0e14fbdff3ab2701407818eca0145 [2021-10-28 09:34:41,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:34:41,375 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:34:41,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:34:41,379 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:34:41,380 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:34:41,381 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74e9b87-8f2d-472f-b75c-b4d77046ca0a/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-3.c [2021-10-28 09:34:41,453 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74e9b87-8f2d-472f-b75c-b4d77046ca0a/bin/uautomizer-UnR33cPsHg/data/70f870122/4bbcf13a4d724af9890f63fcca90607e/FLAG21bd3cc39 [2021-10-28 09:34:41,891 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:34:41,892 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74e9b87-8f2d-472f-b75c-b4d77046ca0a/sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-3.c [2021-10-28 09:34:41,900 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74e9b87-8f2d-472f-b75c-b4d77046ca0a/bin/uautomizer-UnR33cPsHg/data/70f870122/4bbcf13a4d724af9890f63fcca90607e/FLAG21bd3cc39 [2021-10-28 09:34:42,312 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74e9b87-8f2d-472f-b75c-b4d77046ca0a/bin/uautomizer-UnR33cPsHg/data/70f870122/4bbcf13a4d724af9890f63fcca90607e [2021-10-28 09:34:42,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:34:42,316 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:34:42,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:34:42,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:34:42,337 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:34:42,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:34:42" (1/1) ... [2021-10-28 09:34:42,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25740894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:42, skipping insertion in model container [2021-10-28 09:34:42,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:34:42" (1/1) ... [2021-10-28 09:34:42,347 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:34:42,358 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:34:42,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:34:42,519 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:34:42,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:34:42,542 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:34:42,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:42 WrapperNode [2021-10-28 09:34:42,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:34:42,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:34:42,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:34:42,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:34:42,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:42" (1/1) ... [2021-10-28 09:34:42,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:42" (1/1) ... [2021-10-28 09:34:42,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:42" (1/1) ... [2021-10-28 09:34:42,562 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:42" (1/1) ... [2021-10-28 09:34:42,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:42" (1/1) ... [2021-10-28 09:34:42,571 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:42" (1/1) ... [2021-10-28 09:34:42,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:42" (1/1) ... [2021-10-28 09:34:42,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:34:42,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:34:42,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:34:42,575 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:34:42,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:42" (1/1) ... [2021-10-28 09:34:42,583 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:34:42,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74e9b87-8f2d-472f-b75c-b4d77046ca0a/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:34:42,605 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74e9b87-8f2d-472f-b75c-b4d77046ca0a/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:34:42,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74e9b87-8f2d-472f-b75c-b4d77046ca0a/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:34:42,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 09:34:42,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:34:42,661 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 09:34:42,661 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 09:34:42,662 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 09:34:42,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 09:34:42,662 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 09:34:42,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:34:42,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 09:34:42,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:34:42,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:34:42,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 09:34:42,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:34:42,885 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:34:42,885 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-28 09:34:42,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:34:42 BoogieIcfgContainer [2021-10-28 09:34:42,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:34:42,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:34:42,889 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:34:42,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:34:42,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:34:42" (1/3) ... [2021-10-28 09:34:42,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f873f7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:34:42, skipping insertion in model container [2021-10-28 09:34:42,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:42" (2/3) ... [2021-10-28 09:34:42,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f873f7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:34:42, skipping insertion in model container [2021-10-28 09:34:42,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:34:42" (3/3) ... [2021-10-28 09:34:42,896 INFO L111 eAbstractionObserver]: Analyzing ICFG SyntaxSupportPointer01-3.c [2021-10-28 09:34:42,901 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:34:42,901 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-28 09:34:42,950 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:34:42,971 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 [2021-10-28 09:34:42,973 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-10-28 09:34:43,000 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 24 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:34:43,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 09:34:43,015 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:34:43,016 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:34:43,016 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 5 more)] === [2021-10-28 09:34:43,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:43,027 INFO L85 PathProgramCache]: Analyzing trace with hash 222801388, now seen corresponding path program 1 times [2021-10-28 09:34:43,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:34:43,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551067147] [2021-10-28 09:34:43,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:43,040 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:34:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:34:43,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:34:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:34:43,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:43,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:34:43,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551067147] [2021-10-28 09:34:43,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551067147] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:34:43,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:34:43,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:34:43,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628250773] [2021-10-28 09:34:43,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:34:43,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:34:43,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:34:43,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:34:43,337 INFO L87 Difference]: Start difference. First operand has 29 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 24 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:34:43,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:34:43,422 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-10-28 09:34:43,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:34:43,424 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-10-28 09:34:43,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:34:43,432 INFO L225 Difference]: With dead ends: 25 [2021-10-28 09:34:43,432 INFO L226 Difference]: Without dead ends: 22 [2021-10-28 09:34:43,435 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:34:43,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-28 09:34:43,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-28 09:34:43,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 18 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:34:43,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-10-28 09:34:43,468 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 7 [2021-10-28 09:34:43,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:34:43,469 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-10-28 09:34:43,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:34:43,470 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-10-28 09:34:43,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 09:34:43,470 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:34:43,471 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:34:43,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:34:43,472 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 5 more)] === [2021-10-28 09:34:43,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:43,475 INFO L85 PathProgramCache]: Analyzing trace with hash 222801389, now seen corresponding path program 1 times [2021-10-28 09:34:43,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:34:43,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125966236] [2021-10-28 09:34:43,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:43,476 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:34:43,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:34:43,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:34:43,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:34:43,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:43,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:34:43,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125966236] [2021-10-28 09:34:43,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125966236] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:34:43,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:34:43,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:34:43,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059071287] [2021-10-28 09:34:43,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:34:43,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:34:43,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:34:43,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:34:43,600 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:34:43,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:34:43,669 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-10-28 09:34:43,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:34:43,669 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-10-28 09:34:43,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:34:43,670 INFO L225 Difference]: With dead ends: 18 [2021-10-28 09:34:43,670 INFO L226 Difference]: Without dead ends: 18 [2021-10-28 09:34:43,671 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:34:43,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-28 09:34:43,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-28 09:34:43,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:34:43,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-10-28 09:34:43,674 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 7 [2021-10-28 09:34:43,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:34:43,675 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-10-28 09:34:43,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:34:43,675 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-10-28 09:34:43,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 09:34:43,676 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:34:43,676 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:34:43,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:34:43,676 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr7ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 5 more)] === [2021-10-28 09:34:43,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:43,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1751663173, now seen corresponding path program 1 times [2021-10-28 09:34:43,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:34:43,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30444673] [2021-10-28 09:34:43,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:43,678 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:34:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:34:43,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:34:43,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:34:43,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:43,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:34:43,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30444673] [2021-10-28 09:34:43,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30444673] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:34:43,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:34:43,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:34:43,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431894119] [2021-10-28 09:34:43,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:34:43,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:34:43,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:34:43,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:34:43,758 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:34:43,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:34:43,803 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-10-28 09:34:43,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:34:43,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-28 09:34:43,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:34:43,804 INFO L225 Difference]: With dead ends: 17 [2021-10-28 09:34:43,805 INFO L226 Difference]: Without dead ends: 17 [2021-10-28 09:34:43,805 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:34:43,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-28 09:34:43,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-28 09:34:43,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:34:43,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-10-28 09:34:43,810 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2021-10-28 09:34:43,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:34:43,810 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-10-28 09:34:43,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:34:43,811 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-10-28 09:34:43,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 09:34:43,812 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:34:43,812 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:34:43,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:34:43,812 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr9ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 5 more)] === [2021-10-28 09:34:43,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:43,829 INFO L85 PathProgramCache]: Analyzing trace with hash -278868728, now seen corresponding path program 1 times [2021-10-28 09:34:43,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:34:43,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168137355] [2021-10-28 09:34:43,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:43,830 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:34:43,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:34:43,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:34:43,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:34:43,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:43,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:34:43,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168137355] [2021-10-28 09:34:43,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168137355] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:34:43,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:34:43,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:34:43,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461650144] [2021-10-28 09:34:43,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:34:43,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:34:43,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:34:43,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:34:43,970 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:34:44,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:34:44,033 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-10-28 09:34:44,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:34:44,034 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-10-28 09:34:44,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:34:44,034 INFO L225 Difference]: With dead ends: 16 [2021-10-28 09:34:44,034 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 09:34:44,035 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:34:44,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 09:34:44,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 09:34:44,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-10-28 09:34:44,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 09:34:44,036 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-10-28 09:34:44,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:34:44,036 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:34:44,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:34:44,037 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 09:34:44,037 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 09:34:44,040 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0REQUIRES_VIOLATION [2021-10-28 09:34:44,041 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr1REQUIRES_VIOLATION [2021-10-28 09:34:44,043 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr2REQUIRES_VIOLATION [2021-10-28 09:34:44,043 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr3REQUIRES_VIOLATION [2021-10-28 09:34:44,044 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr4REQUIRES_VIOLATION [2021-10-28 09:34:44,044 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr5REQUIRES_VIOLATION [2021-10-28 09:34:44,044 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:34:44,045 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:34:44,045 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr8ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:34:44,045 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr9ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 09:34:44,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:34:44,049 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-10-28 09:34:44,050 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:34:44,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:34:44 BoogieIcfgContainer [2021-10-28 09:34:44,054 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:34:44,055 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:34:44,055 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:34:44,055 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:34:44,056 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:34:42" (3/4) ... [2021-10-28 09:34:44,059 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 09:34:44,067 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-10-28 09:34:44,068 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-10-28 09:34:44,073 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-28 09:34:44,074 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-28 09:34:44,074 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:34:44,075 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:34:44,116 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74e9b87-8f2d-472f-b75c-b4d77046ca0a/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:34:44,116 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:34:44,122 INFO L168 Benchmark]: Toolchain (without parser) took 1800.64 ms. Allocated memory is still 109.1 MB. Free memory was 72.9 MB in the beginning and 75.1 MB in the end (delta: -2.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:34:44,123 INFO L168 Benchmark]: CDTParser took 0.62 ms. Allocated memory is still 109.1 MB. Free memory is still 89.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:34:44,123 INFO L168 Benchmark]: CACSL2BoogieTranslator took 225.16 ms. Allocated memory is still 109.1 MB. Free memory was 72.7 MB in the beginning and 86.1 MB in the end (delta: -13.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:34:44,125 INFO L168 Benchmark]: Boogie Preprocessor took 29.71 ms. Allocated memory is still 109.1 MB. Free memory was 86.1 MB in the beginning and 84.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:34:44,125 INFO L168 Benchmark]: RCFGBuilder took 312.91 ms. Allocated memory is still 109.1 MB. Free memory was 84.4 MB in the beginning and 75.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:34:44,126 INFO L168 Benchmark]: TraceAbstraction took 1165.25 ms. Allocated memory is still 109.1 MB. Free memory was 74.4 MB in the beginning and 77.9 MB in the end (delta: -3.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:34:44,126 INFO L168 Benchmark]: Witness Printer took 61.32 ms. Allocated memory is still 109.1 MB. Free memory was 77.9 MB in the beginning and 75.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:34:44,130 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.62 ms. Allocated memory is still 109.1 MB. Free memory is still 89.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 225.16 ms. Allocated memory is still 109.1 MB. Free memory was 72.7 MB in the beginning and 86.1 MB in the end (delta: -13.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.71 ms. Allocated memory is still 109.1 MB. Free memory was 86.1 MB in the beginning and 84.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 312.91 ms. Allocated memory is still 109.1 MB. Free memory was 84.4 MB in the beginning and 75.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1165.25 ms. Allocated memory is still 109.1 MB. Free memory was 74.4 MB in the beginning and 77.9 MB in the end (delta: -3.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 61.32 ms. Allocated memory is still 109.1 MB. Free memory was 77.9 MB in the beginning and 75.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * 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 - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 18]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 18]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 13]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 29 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 39 SDslu, 31 SDs, 0 SdLazy, 107 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, InterpolantAutomatonStates: 17, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 117 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-28 09:34:44,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74e9b87-8f2d-472f-b75c-b4d77046ca0a/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...