./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-1.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_79d34e90-5eea-4080-b957-0c20a71ef23e/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d34e90-5eea-4080-b957-0c20a71ef23e/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d34e90-5eea-4080-b957-0c20a71ef23e/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d34e90-5eea-4080-b957-0c20a71ef23e/bin/utaipan-SDwSMHVbGG/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d34e90-5eea-4080-b957-0c20a71ef23e/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d34e90-5eea-4080-b957-0c20a71ef23e/bin/utaipan-SDwSMHVbGG --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4ce5b36ec45142454df368b1219eecfd99c0ab690f893f50424ec8a6183a262e ................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:34:57,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:34:57,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:34:57,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:34:57,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:34:57,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:34:57,795 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:34:57,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:34:57,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:34:57,807 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:34:57,808 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:34:57,810 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:34:57,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:34:57,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:34:57,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:34:57,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:34:57,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:34:57,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:34:57,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:34:57,836 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:34:57,838 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:34:57,840 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:34:57,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:34:57,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:34:57,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:34:57,849 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:34:57,849 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:34:57,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:34:57,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:34:57,853 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:34:57,854 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:34:57,855 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:34:57,856 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:34:57,858 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:34:57,859 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:34:57,860 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:34:57,860 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:34:57,861 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:34:57,861 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:34:57,862 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:34:57,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:34:57,863 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d34e90-5eea-4080-b957-0c20a71ef23e/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2021-10-29 05:34:57,911 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:34:57,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:34:57,913 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:34:57,919 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:34:57,920 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:34:57,920 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:34:57,920 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:34:57,920 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:34:57,920 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:34:57,921 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:34:57,922 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:34:57,922 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:34:57,922 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:34:57,922 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:34:57,923 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:34:57,924 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 05:34:57,924 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 05:34:57,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:34:57,925 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 05:34:57,925 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:34:57,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:34:57,925 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-29 05:34:57,925 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-29 05:34:57,926 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-29 05:34:57,926 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:34:57,926 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:34:57,927 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:34:57,928 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:34:57,928 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:34:57,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:34:57,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:34:57,929 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:34:57,929 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:34:57,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:34:57,929 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:34:57,930 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:34:57,930 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_79d34e90-5eea-4080-b957-0c20a71ef23e/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d34e90-5eea-4080-b957-0c20a71ef23e/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ce5b36ec45142454df368b1219eecfd99c0ab690f893f50424ec8a6183a262e [2021-10-29 05:34:58,233 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:34:58,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:34:58,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:34:58,265 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:34:58,266 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:34:58,267 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d34e90-5eea-4080-b957-0c20a71ef23e/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-1.c [2021-10-29 05:34:58,336 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d34e90-5eea-4080-b957-0c20a71ef23e/bin/utaipan-SDwSMHVbGG/data/a7a59a5e2/8bea7c8483de44dfa55c2344e013037c/FLAG0d64344f7 [2021-10-29 05:34:58,779 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:34:58,780 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d34e90-5eea-4080-b957-0c20a71ef23e/sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-1.c [2021-10-29 05:34:58,791 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d34e90-5eea-4080-b957-0c20a71ef23e/bin/utaipan-SDwSMHVbGG/data/a7a59a5e2/8bea7c8483de44dfa55c2344e013037c/FLAG0d64344f7 [2021-10-29 05:34:59,174 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d34e90-5eea-4080-b957-0c20a71ef23e/bin/utaipan-SDwSMHVbGG/data/a7a59a5e2/8bea7c8483de44dfa55c2344e013037c [2021-10-29 05:34:59,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:34:59,178 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:34:59,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:34:59,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:34:59,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:34:59,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:34:59" (1/1) ... [2021-10-29 05:34:59,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f63cc9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:34:59, skipping insertion in model container [2021-10-29 05:34:59,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:34:59" (1/1) ... [2021-10-29 05:34:59,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:34:59,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:34:59,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:34:59,424 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:34:59,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:34:59,449 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:34:59,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:34:59 WrapperNode [2021-10-29 05:34:59,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:34:59,451 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:34:59,452 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:34:59,452 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:34:59,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:34:59" (1/1) ... [2021-10-29 05:34:59,466 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:34:59" (1/1) ... [2021-10-29 05:34:59,485 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:34:59,486 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:34:59,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:34:59,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:34:59,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:34:59" (1/1) ... [2021-10-29 05:34:59,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:34:59" (1/1) ... [2021-10-29 05:34:59,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:34:59" (1/1) ... [2021-10-29 05:34:59,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:34:59" (1/1) ... [2021-10-29 05:34:59,502 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:34:59" (1/1) ... [2021-10-29 05:34:59,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:34:59" (1/1) ... [2021-10-29 05:34:59,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:34:59" (1/1) ... [2021-10-29 05:34:59,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:34:59,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:34:59,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:34:59,510 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:34:59,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:34:59" (1/1) ... [2021-10-29 05:34:59,521 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:34:59,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d34e90-5eea-4080-b957-0c20a71ef23e/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:34:59,557 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d34e90-5eea-4080-b957-0c20a71ef23e/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:34:59,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d34e90-5eea-4080-b957-0c20a71ef23e/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:34:59,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-29 05:34:59,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-29 05:34:59,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:34:59,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:34:59,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-29 05:34:59,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 05:34:59,943 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:34:59,943 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-29 05:34:59,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:34:59 BoogieIcfgContainer [2021-10-29 05:34:59,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:34:59,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:34:59,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:34:59,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:34:59,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:34:59" (1/3) ... [2021-10-29 05:34:59,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1730aa4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:34:59, skipping insertion in model container [2021-10-29 05:34:59,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:34:59" (2/3) ... [2021-10-29 05:34:59,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1730aa4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:34:59, skipping insertion in model container [2021-10-29 05:34:59,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:34:59" (3/3) ... [2021-10-29 05:34:59,956 INFO L111 eAbstractionObserver]: Analyzing ICFG SyntaxSupportPointer01-1.c [2021-10-29 05:34:59,962 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:34:59,962 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-10-29 05:35:00,040 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:35:00,047 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 [2021-10-29 05:35:00,047 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-29 05:35:00,076 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 10 states have (on average 2.4) internal successors, (24), 22 states have internal predecessors, (24), 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) [2021-10-29 05:35:00,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-29 05:35:00,082 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:35:00,083 INFO L513 BasicCegarLoop]: trace histogram [1, 1] [2021-10-29 05:35:00,083 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-29 05:35:00,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:35:00,089 INFO L85 PathProgramCache]: Analyzing trace with hash 2298, now seen corresponding path program 1 times [2021-10-29 05:35:00,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:35:00,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669544392] [2021-10-29 05:35:00,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:35:00,117 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:35:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:35:00,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:35:00,309 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:35:00,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669544392] [2021-10-29 05:35:00,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669544392] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:35:00,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:35:00,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-29 05:35:00,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669537045] [2021-10-29 05:35:00,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:35:00,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:35:00,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:35:00,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:35:00,404 INFO L87 Difference]: Start difference. First operand has 23 states, 10 states have (on average 2.4) internal successors, (24), 22 states have internal predecessors, (24), 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 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-10-29 05:35:00,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:35:00,498 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-10-29 05:35:00,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:35:00,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2021-10-29 05:35:00,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:35:00,512 INFO L225 Difference]: With dead ends: 18 [2021-10-29 05:35:00,512 INFO L226 Difference]: Without dead ends: 17 [2021-10-29 05:35:00,514 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:35:00,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-29 05:35:00,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-29 05:35:00,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 10 states have (on average 1.7) internal successors, (17), 16 states have internal predecessors, (17), 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) [2021-10-29 05:35:00,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-10-29 05:35:00,547 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 2 [2021-10-29 05:35:00,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:35:00,548 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-10-29 05:35:00,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-10-29 05:35:00,549 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-10-29 05:35:00,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-29 05:35:00,549 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:35:00,549 INFO L513 BasicCegarLoop]: trace histogram [1, 1] [2021-10-29 05:35:00,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:35:00,551 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-29 05:35:00,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:35:00,556 INFO L85 PathProgramCache]: Analyzing trace with hash 2299, now seen corresponding path program 1 times [2021-10-29 05:35:00,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:35:00,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562447197] [2021-10-29 05:35:00,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:35:00,557 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:35:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:35:00,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:35:00,634 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:35:00,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562447197] [2021-10-29 05:35:00,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562447197] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:35:00,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:35:00,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-29 05:35:00,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636398698] [2021-10-29 05:35:00,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:35:00,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:35:00,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:35:00,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:35:00,642 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-10-29 05:35:00,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:35:00,670 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2021-10-29 05:35:00,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:35:00,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2021-10-29 05:35:00,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:35:00,671 INFO L225 Difference]: With dead ends: 12 [2021-10-29 05:35:00,672 INFO L226 Difference]: Without dead ends: 12 [2021-10-29 05:35:00,673 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:35:00,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-29 05:35:00,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-29 05:35:00,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 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) [2021-10-29 05:35:00,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-29 05:35:00,678 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 2 [2021-10-29 05:35:00,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:35:00,679 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-29 05:35:00,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-10-29 05:35:00,680 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-29 05:35:00,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:35:00,680 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:35:00,680 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 05:35:00,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 05:35:00,682 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-29 05:35:00,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:35:00,693 INFO L85 PathProgramCache]: Analyzing trace with hash -2139125212, now seen corresponding path program 1 times [2021-10-29 05:35:00,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:35:00,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575179020] [2021-10-29 05:35:00,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:35:00,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:35:00,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:35:00,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:35:00,723 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:35:00,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575179020] [2021-10-29 05:35:00,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575179020] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:35:00,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:35:00,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-29 05:35:00,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587773215] [2021-10-29 05:35:00,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:35:00,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:35:00,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:35:00,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:35:00,726 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:35:00,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:35:00,737 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2021-10-29 05:35:00,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:35:00,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-29 05:35:00,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:35:00,739 INFO L225 Difference]: With dead ends: 11 [2021-10-29 05:35:00,739 INFO L226 Difference]: Without dead ends: 11 [2021-10-29 05:35:00,739 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:35:00,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-29 05:35:00,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-29 05:35:00,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 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) [2021-10-29 05:35:00,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-10-29 05:35:00,742 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2021-10-29 05:35:00,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:35:00,742 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-10-29 05:35:00,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:35:00,743 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-10-29 05:35:00,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 05:35:00,743 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:35:00,743 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:35:00,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 05:35:00,744 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-29 05:35:00,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:35:00,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1590008135, now seen corresponding path program 1 times [2021-10-29 05:35:00,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:35:00,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748013707] [2021-10-29 05:35:00,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:35:00,745 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:35:00,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:35:00,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:35:00,819 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:35:00,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748013707] [2021-10-29 05:35:00,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748013707] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:35:00,820 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:35:00,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:35:00,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398117395] [2021-10-29 05:35:00,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:35:00,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:35:00,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:35:00,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:35:00,822 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2021-10-29 05:35:00,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:35:00,870 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2021-10-29 05:35:00,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:35:00,870 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) Word has length 8 [2021-10-29 05:35:00,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:35:00,871 INFO L225 Difference]: With dead ends: 10 [2021-10-29 05:35:00,871 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 05:35:00,871 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:35:00,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 05:35:00,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 05:35:00,872 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) [2021-10-29 05:35:00,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 05:35:00,873 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-10-29 05:35:00,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:35:00,874 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 05:35:00,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2021-10-29 05:35:00,874 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 05:35:00,875 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 05:35:00,879 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-29 05:35:00,880 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-29 05:35:00,880 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-29 05:35:00,880 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-29 05:35:00,881 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-29 05:35:00,881 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-29 05:35:00,881 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-29 05:35:00,881 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-29 05:35:00,882 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:35:00,883 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:35:00,883 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:35:00,883 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 05:35:00,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-29 05:35:00,887 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-10-29 05:35:00,888 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:35:00,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:35:00 BoogieIcfgContainer [2021-10-29 05:35:00,892 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:35:00,894 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:35:00,894 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:35:00,895 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:35:00,895 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:34:59" (3/4) ... [2021-10-29 05:35:00,899 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 05:35:00,910 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-29 05:35:00,911 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-29 05:35:00,911 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-29 05:35:00,950 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d34e90-5eea-4080-b957-0c20a71ef23e/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:35:00,950 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:35:00,952 INFO L168 Benchmark]: Toolchain (without parser) took 1772.55 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 56.5 MB in the beginning and 65.2 MB in the end (delta: -8.7 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2021-10-29 05:35:00,952 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 92.3 MB. Free memory is still 72.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:35:00,953 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.73 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 56.2 MB in the beginning and 88.1 MB in the end (delta: -31.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2021-10-29 05:35:00,954 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.74 ms. Allocated memory is still 111.1 MB. Free memory was 87.9 MB in the beginning and 86.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:35:00,954 INFO L168 Benchmark]: Boogie Preprocessor took 22.58 ms. Allocated memory is still 111.1 MB. Free memory was 86.7 MB in the beginning and 85.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:35:00,955 INFO L168 Benchmark]: RCFGBuilder took 436.98 ms. Allocated memory is still 111.1 MB. Free memory was 85.5 MB in the beginning and 74.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:35:00,956 INFO L168 Benchmark]: TraceAbstraction took 943.54 ms. Allocated memory is still 111.1 MB. Free memory was 74.2 MB in the beginning and 67.6 MB in the end (delta: 6.6 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:35:00,956 INFO L168 Benchmark]: Witness Printer took 55.90 ms. Allocated memory is still 111.1 MB. Free memory was 67.6 MB in the beginning and 65.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:35:00,960 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 92.3 MB. Free memory is still 72.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 270.73 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 56.2 MB in the beginning and 88.1 MB in the end (delta: -31.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.74 ms. Allocated memory is still 111.1 MB. Free memory was 87.9 MB in the beginning and 86.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.58 ms. Allocated memory is still 111.1 MB. Free memory was 86.7 MB in the beginning and 85.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 436.98 ms. Allocated memory is still 111.1 MB. Free memory was 85.5 MB in the beginning and 74.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 943.54 ms. Allocated memory is still 111.1 MB. Free memory was 74.2 MB in the beginning and 67.6 MB in the end (delta: 6.6 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. * Witness Printer took 55.90 ms. Allocated memory is still 111.1 MB. Free memory was 67.6 MB in the beginning and 65.2 MB in the end (delta: 2.5 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: 17]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 17]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 17]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 17]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 19]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 19]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 19]: 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 1 procedures, 23 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 34 SDslu, 3 SDs, 0 SdLazy, 40 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 13, 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, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 116 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 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-29 05:35:01,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d34e90-5eea-4080-b957-0c20a71ef23e/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...