./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/scopes4-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd86775b-82c0-43e5-800c-60c21158550b/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd86775b-82c0-43e5-800c-60c21158550b/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd86775b-82c0-43e5-800c-60c21158550b/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd86775b-82c0-43e5-800c-60c21158550b/bin/utaipan-mTDlp9Zugs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/scopes4-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd86775b-82c0-43e5-800c-60c21158550b/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd86775b-82c0-43e5-800c-60c21158550b/bin/utaipan-mTDlp9Zugs --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 32bit --witnessprinter.graph.data.programhash 87dcbb1d4539995e5aba39e6053775ca0fac811e .......................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:34:17,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:34:17,785 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:34:17,842 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:34:17,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:34:17,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:34:17,846 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:34:17,849 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:34:17,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:34:17,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:34:17,855 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:34:17,857 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:34:17,858 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:34:17,859 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:34:17,861 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:34:17,863 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:34:17,865 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:34:17,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:34:17,870 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:34:17,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:34:17,876 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:34:17,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:34:17,888 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:34:17,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:34:17,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:34:17,896 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:34:17,896 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:34:17,898 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:34:17,898 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:34:17,900 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:34:17,901 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:34:17,902 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:34:17,904 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:34:17,905 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:34:17,907 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:34:17,907 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:34:17,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:34:17,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:34:17,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:34:17,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:34:17,912 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:34:17,913 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd86775b-82c0-43e5-800c-60c21158550b/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-16 02:34:17,954 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:34:17,954 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:34:17,955 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:34:17,956 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:34:17,956 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:34:17,956 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:34:17,957 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:34:17,957 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:34:17,957 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:34:17,957 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:34:17,958 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:34:17,958 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:34:17,958 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:34:17,958 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:34:17,959 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:34:17,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-16 02:34:17,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-16 02:34:17,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:34:17,960 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:34:17,961 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-16 02:34:17,961 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:34:17,961 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:34:17,962 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:34:17,962 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-16 02:34:17,962 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-16 02:34:17,962 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-16 02:34:17,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:34:17,963 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:34:17,963 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:34:17,963 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:34:17,964 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:34:17,964 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:34:17,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:34:17,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:34:17,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:34:17,965 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:34:17,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:34:17,966 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:34:17,966 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:34:17,966 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_bd86775b-82c0-43e5-800c-60c21158550b/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd86775b-82c0-43e5-800c-60c21158550b/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87dcbb1d4539995e5aba39e6053775ca0fac811e [2021-10-16 02:34:18,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:34:18,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:34:18,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:34:18,411 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:34:18,412 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:34:18,414 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd86775b-82c0-43e5-800c-60c21158550b/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/memsafety-ext3/scopes4-1.c [2021-10-16 02:34:18,524 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd86775b-82c0-43e5-800c-60c21158550b/bin/utaipan-mTDlp9Zugs/data/bc41078b0/7530924ef0e94ba1a69ec780bcb30d93/FLAG75bd7c4af [2021-10-16 02:34:19,114 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:34:19,115 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd86775b-82c0-43e5-800c-60c21158550b/sv-benchmarks/c/memsafety-ext3/scopes4-1.c [2021-10-16 02:34:19,122 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd86775b-82c0-43e5-800c-60c21158550b/bin/utaipan-mTDlp9Zugs/data/bc41078b0/7530924ef0e94ba1a69ec780bcb30d93/FLAG75bd7c4af [2021-10-16 02:34:19,496 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd86775b-82c0-43e5-800c-60c21158550b/bin/utaipan-mTDlp9Zugs/data/bc41078b0/7530924ef0e94ba1a69ec780bcb30d93 [2021-10-16 02:34:19,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:34:19,501 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:34:19,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:34:19,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:34:19,508 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:34:19,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:34:19" (1/1) ... [2021-10-16 02:34:19,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4445a1e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:19, skipping insertion in model container [2021-10-16 02:34:19,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:34:19" (1/1) ... [2021-10-16 02:34:19,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:34:19,538 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:34:19,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:34:19,770 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:34:19,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:34:19,805 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:34:19,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:19 WrapperNode [2021-10-16 02:34:19,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:34:19,807 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:34:19,807 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:34:19,808 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:34:19,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:19" (1/1) ... [2021-10-16 02:34:19,830 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:19" (1/1) ... [2021-10-16 02:34:19,856 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:34:19,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:34:19,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:34:19,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:34:19,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:19" (1/1) ... [2021-10-16 02:34:19,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:19" (1/1) ... [2021-10-16 02:34:19,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:19" (1/1) ... [2021-10-16 02:34:19,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:19" (1/1) ... [2021-10-16 02:34:19,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:19" (1/1) ... [2021-10-16 02:34:19,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:19" (1/1) ... [2021-10-16 02:34:19,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:19" (1/1) ... [2021-10-16 02:34:19,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:34:19,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:34:19,888 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:34:19,888 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:34:19,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:19" (1/1) ... [2021-10-16 02:34:19,900 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:34:19,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd86775b-82c0-43e5-800c-60c21158550b/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:34:19,955 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd86775b-82c0-43e5-800c-60c21158550b/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:34:19,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd86775b-82c0-43e5-800c-60c21158550b/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:34:20,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 02:34:20,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:34:20,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:34:20,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 02:34:20,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:34:20,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:34:20,429 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:34:20,429 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-16 02:34:20,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:34:20 BoogieIcfgContainer [2021-10-16 02:34:20,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:34:20,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:34:20,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:34:20,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:34:20,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:34:19" (1/3) ... [2021-10-16 02:34:20,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34aaff0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:34:20, skipping insertion in model container [2021-10-16 02:34:20,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:19" (2/3) ... [2021-10-16 02:34:20,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34aaff0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:34:20, skipping insertion in model container [2021-10-16 02:34:20,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:34:20" (3/3) ... [2021-10-16 02:34:20,445 INFO L111 eAbstractionObserver]: Analyzing ICFG scopes4-1.c [2021-10-16 02:34:20,452 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:34:20,452 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-10-16 02:34:20,569 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:34:20,578 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, mConcurrency=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 [2021-10-16 02:34:20,579 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-16 02:34:20,597 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 4 states have (on average 2.25) internal successors, (9), 9 states have internal predecessors, (9), 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) [2021-10-16 02:34:20,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-16 02:34:20,605 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:34:20,605 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-16 02:34:20,606 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-10-16 02:34:20,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:34:20,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1647, now seen corresponding path program 1 times [2021-10-16 02:34:20,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:34:20,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913863578] [2021-10-16 02:34:20,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:20,631 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:34:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:20,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:20,825 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:34:20,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913863578] [2021-10-16 02:34:20,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913863578] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:34:20,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:34:20,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-16 02:34:20,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996786410] [2021-10-16 02:34:20,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:34:20,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:34:20,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:34:20,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:34:20,857 INFO L87 Difference]: Start difference. First operand has 10 states, 4 states have (on average 2.25) internal successors, (9), 9 states have internal predecessors, (9), 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) [2021-10-16 02:34:20,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:34:20,889 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2021-10-16 02:34:20,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:34:20,891 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 [2021-10-16 02:34:20,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:34:20,901 INFO L225 Difference]: With dead ends: 9 [2021-10-16 02:34:20,901 INFO L226 Difference]: Without dead ends: 8 [2021-10-16 02:34:20,903 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:34:20,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-16 02:34:20,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-16 02:34:20,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 4 states have (on average 1.75) internal successors, (7), 7 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:20,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2021-10-16 02:34:20,937 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 2 [2021-10-16 02:34:20,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:34:20,937 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2021-10-16 02:34:20,937 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) [2021-10-16 02:34:20,938 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2021-10-16 02:34:20,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-16 02:34:20,938 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:34:20,938 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-16 02:34:20,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:34:20,939 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-10-16 02:34:20,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:34:20,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1648, now seen corresponding path program 1 times [2021-10-16 02:34:20,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:34:20,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345327209] [2021-10-16 02:34:20,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:20,942 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:34:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:21,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:21,051 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:34:21,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345327209] [2021-10-16 02:34:21,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345327209] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:34:21,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:34:21,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-16 02:34:21,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661746182] [2021-10-16 02:34:21,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:34:21,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:34:21,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:34:21,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:34:21,061 INFO L87 Difference]: Start difference. First operand 8 states and 7 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) [2021-10-16 02:34:21,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:34:21,081 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2021-10-16 02:34:21,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:34:21,083 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 [2021-10-16 02:34:21,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:34:21,083 INFO L225 Difference]: With dead ends: 7 [2021-10-16 02:34:21,084 INFO L226 Difference]: Without dead ends: 7 [2021-10-16 02:34:21,085 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:34:21,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-16 02:34:21,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-16 02:34:21,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 4 states have (on average 1.5) internal successors, (6), 6 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) [2021-10-16 02:34:21,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-10-16 02:34:21,088 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 2 [2021-10-16 02:34:21,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:34:21,088 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-10-16 02:34:21,089 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) [2021-10-16 02:34:21,090 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-10-16 02:34:21,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-16 02:34:21,090 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:34:21,090 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-16 02:34:21,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:34:21,091 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-10-16 02:34:21,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:34:21,092 INFO L82 PathProgramCache]: Analyzing trace with hash 51658, now seen corresponding path program 1 times [2021-10-16 02:34:21,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:34:21,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173724549] [2021-10-16 02:34:21,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:21,099 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:34:21,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:21,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:21,179 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:34:21,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173724549] [2021-10-16 02:34:21,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173724549] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:34:21,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:34:21,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:34:21,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029014656] [2021-10-16 02:34:21,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:34:21,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:34:21,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:34:21,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:34:21,185 INFO L87 Difference]: Start difference. First operand 7 states and 6 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:21,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:34:21,196 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2021-10-16 02:34:21,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:34:21,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-16 02:34:21,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:34:21,198 INFO L225 Difference]: With dead ends: 6 [2021-10-16 02:34:21,198 INFO L226 Difference]: Without dead ends: 6 [2021-10-16 02:34:21,199 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:34:21,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2021-10-16 02:34:21,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2021-10-16 02:34:21,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 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) [2021-10-16 02:34:21,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5 transitions. [2021-10-16 02:34:21,201 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 5 transitions. Word has length 3 [2021-10-16 02:34:21,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:34:21,202 INFO L470 AbstractCegarLoop]: Abstraction has 6 states and 5 transitions. [2021-10-16 02:34:21,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:21,202 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 5 transitions. [2021-10-16 02:34:21,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-16 02:34:21,203 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:34:21,203 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-16 02:34:21,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 02:34:21,204 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-10-16 02:34:21,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:34:21,205 INFO L82 PathProgramCache]: Analyzing trace with hash 51659, now seen corresponding path program 1 times [2021-10-16 02:34:21,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:34:21,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102079566] [2021-10-16 02:34:21,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:21,206 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:34:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:21,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:21,315 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:34:21,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102079566] [2021-10-16 02:34:21,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102079566] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:34:21,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:34:21,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:34:21,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353297604] [2021-10-16 02:34:21,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:34:21,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:34:21,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:34:21,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:34:21,319 INFO L87 Difference]: Start difference. First operand 6 states and 5 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:21,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:34:21,343 INFO L93 Difference]: Finished difference Result 5 states and 4 transitions. [2021-10-16 02:34:21,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:34:21,344 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-16 02:34:21,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:34:21,345 INFO L225 Difference]: With dead ends: 5 [2021-10-16 02:34:21,345 INFO L226 Difference]: Without dead ends: 5 [2021-10-16 02:34:21,345 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:34:21,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2021-10-16 02:34:21,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2021-10-16 02:34:21,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 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) [2021-10-16 02:34:21,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 4 transitions. [2021-10-16 02:34:21,347 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 4 transitions. Word has length 3 [2021-10-16 02:34:21,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:34:21,347 INFO L470 AbstractCegarLoop]: Abstraction has 5 states and 4 transitions. [2021-10-16 02:34:21,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:21,348 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 4 transitions. [2021-10-16 02:34:21,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-16 02:34:21,348 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:34:21,348 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-16 02:34:21,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 02:34:21,349 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-10-16 02:34:21,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:34:21,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1601662, now seen corresponding path program 1 times [2021-10-16 02:34:21,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:34:21,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104284401] [2021-10-16 02:34:21,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:21,351 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:34:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:21,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:21,381 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:34:21,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104284401] [2021-10-16 02:34:21,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104284401] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:34:21,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:34:21,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-16 02:34:21,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931662939] [2021-10-16 02:34:21,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:34:21,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:34:21,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:34:21,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:34:21,384 INFO L87 Difference]: Start difference. First operand 5 states and 4 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-10-16 02:34:21,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:34:21,389 INFO L93 Difference]: Finished difference Result 4 states and 3 transitions. [2021-10-16 02:34:21,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:34:21,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2021-10-16 02:34:21,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:34:21,390 INFO L225 Difference]: With dead ends: 4 [2021-10-16 02:34:21,390 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:34:21,391 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:34:21,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:34:21,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:34:21,392 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) [2021-10-16 02:34:21,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:34:21,392 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2021-10-16 02:34:21,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:34:21,392 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:34:21,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-10-16 02:34:21,393 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:34:21,393 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:34:21,396 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-16 02:34:21,396 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-16 02:34:21,397 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-16 02:34:21,397 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-16 02:34:21,397 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 02:34:21,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-16 02:34:21,403 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:34:21,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:34:21 BoogieIcfgContainer [2021-10-16 02:34:21,405 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:34:21,406 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:34:21,406 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:34:21,407 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:34:21,407 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:34:20" (3/4) ... [2021-10-16 02:34:21,411 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:34:21,423 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-16 02:34:21,423 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-16 02:34:21,423 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-16 02:34:21,423 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:34:21,473 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd86775b-82c0-43e5-800c-60c21158550b/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:34:21,473 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:34:21,475 INFO L168 Benchmark]: Toolchain (without parser) took 1972.91 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 58.6 MB in the beginning and 72.1 MB in the end (delta: -13.5 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:34:21,476 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 94.4 MB. Free memory was 64.2 MB in the beginning and 64.1 MB in the end (delta: 29.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:34:21,476 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.13 ms. Allocated memory is still 94.4 MB. Free memory was 58.3 MB in the beginning and 70.2 MB in the end (delta: -11.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:34:21,477 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.50 ms. Allocated memory is still 94.4 MB. Free memory was 70.2 MB in the beginning and 68.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:34:21,477 INFO L168 Benchmark]: Boogie Preprocessor took 29.16 ms. Allocated memory is still 94.4 MB. Free memory was 68.6 MB in the beginning and 67.8 MB in the end (delta: 770.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:34:21,478 INFO L168 Benchmark]: RCFGBuilder took 545.44 ms. Allocated memory is still 94.4 MB. Free memory was 67.5 MB in the beginning and 56.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:34:21,478 INFO L168 Benchmark]: TraceAbstraction took 969.99 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 56.0 MB in the beginning and 74.8 MB in the end (delta: -18.8 MB). Peak memory consumption was 1.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:34:21,479 INFO L168 Benchmark]: Witness Printer took 66.96 ms. Allocated memory is still 113.2 MB. Free memory was 74.2 MB in the beginning and 72.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:34:21,482 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 94.4 MB. Free memory was 64.2 MB in the beginning and 64.1 MB in the end (delta: 29.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 303.13 ms. Allocated memory is still 94.4 MB. Free memory was 58.3 MB in the beginning and 70.2 MB in the end (delta: -11.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.50 ms. Allocated memory is still 94.4 MB. Free memory was 70.2 MB in the beginning and 68.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.16 ms. Allocated memory is still 94.4 MB. Free memory was 68.6 MB in the beginning and 67.8 MB in the end (delta: 770.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 545.44 ms. Allocated memory is still 94.4 MB. Free memory was 67.5 MB in the beginning and 56.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 969.99 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 56.0 MB in the beginning and 74.8 MB in the end (delta: -18.8 MB). Peak memory consumption was 1.4 MB. Max. memory is 16.1 GB. * Witness Printer took 66.96 ms. Allocated memory is still 113.2 MB. Free memory was 74.2 MB in the beginning and 72.1 MB in the end (delta: 2.1 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 6]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 6]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: 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, 10 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 846.6ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 14.9ms, AutomataDifference: 144.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 10 SDtfs, 20 SDslu, 0 SDs, 0 SdLazy, 18 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 44.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 70.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 24.5ms AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 17.0ms SsaConstructionTime, 92.4ms SatisfiabilityAnalysisTime, 310.3ms InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-16 02:34:21,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd86775b-82c0-43e5-800c-60c21158550b/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...