./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0158-1.i --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_30f93002-27d2-4c33-8194-1d08f45910ac/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f93002-27d2-4c33-8194-1d08f45910ac/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_30f93002-27d2-4c33-8194-1d08f45910ac/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f93002-27d2-4c33-8194-1d08f45910ac/bin/utaipan-mTDlp9Zugs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0158-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f93002-27d2-4c33-8194-1d08f45910ac/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_30f93002-27d2-4c33-8194-1d08f45910ac/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 8faa7ab505618d5a6c508309045d02d3235f2a80 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:40:34,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:40:34,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:40:34,976 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:40:34,977 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:40:34,982 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:40:34,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:40:34,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:40:34,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:40:34,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:40:34,999 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:40:35,001 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:40:35,002 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:40:35,005 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:40:35,007 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:40:35,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:40:35,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:40:35,019 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:40:35,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:40:35,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:40:35,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:40:35,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:40:35,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:40:35,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:40:35,047 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:40:35,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:40:35,048 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:40:35,050 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:40:35,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:40:35,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:40:35,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:40:35,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:40:35,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:40:35,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:40:35,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:40:35,060 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:40:35,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:40:35,061 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:40:35,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:40:35,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:40:35,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:40:35,064 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f93002-27d2-4c33-8194-1d08f45910ac/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-16 02:40:35,110 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:40:35,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:40:35,111 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:40:35,118 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:40:35,118 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:40:35,119 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:40:35,119 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:40:35,119 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:40:35,119 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:40:35,120 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:40:35,121 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:40:35,121 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:40:35,121 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:40:35,122 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:40:35,122 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:40:35,123 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-16 02:40:35,124 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-16 02:40:35,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:40:35,124 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:40:35,125 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-16 02:40:35,125 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:40:35,125 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:40:35,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:40:35,126 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-16 02:40:35,126 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-16 02:40:35,126 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-16 02:40:35,128 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:40:35,128 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:40:35,129 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:40:35,129 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:40:35,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:40:35,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:40:35,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:40:35,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:40:35,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:40:35,131 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:40:35,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:40:35,131 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:40:35,132 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:40:35,132 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_30f93002-27d2-4c33-8194-1d08f45910ac/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f93002-27d2-4c33-8194-1d08f45910ac/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8faa7ab505618d5a6c508309045d02d3235f2a80 [2021-10-16 02:40:35,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:40:35,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:40:35,434 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:40:35,435 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:40:35,436 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:40:35,437 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f93002-27d2-4c33-8194-1d08f45910ac/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/memsafety/test-0158-1.i [2021-10-16 02:40:35,514 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f93002-27d2-4c33-8194-1d08f45910ac/bin/utaipan-mTDlp9Zugs/data/42bbc47b5/e92ba5bed8db4c1fa942ed7d9592506c/FLAGf73696d2b [2021-10-16 02:40:36,057 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:40:36,058 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f93002-27d2-4c33-8194-1d08f45910ac/sv-benchmarks/c/memsafety/test-0158-1.i [2021-10-16 02:40:36,072 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f93002-27d2-4c33-8194-1d08f45910ac/bin/utaipan-mTDlp9Zugs/data/42bbc47b5/e92ba5bed8db4c1fa942ed7d9592506c/FLAGf73696d2b [2021-10-16 02:40:36,365 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f93002-27d2-4c33-8194-1d08f45910ac/bin/utaipan-mTDlp9Zugs/data/42bbc47b5/e92ba5bed8db4c1fa942ed7d9592506c [2021-10-16 02:40:36,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:40:36,369 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:40:36,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:40:36,376 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:40:36,380 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:40:36,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:40:36" (1/1) ... [2021-10-16 02:40:36,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c3f4006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:40:36, skipping insertion in model container [2021-10-16 02:40:36,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:40:36" (1/1) ... [2021-10-16 02:40:36,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:40:36,433 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:40:36,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:40:36,806 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:40:36,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:40:36,905 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:40:36,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:40:36 WrapperNode [2021-10-16 02:40:36,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:40:36,907 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:40:36,907 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:40:36,907 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:40:36,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:40:36" (1/1) ... [2021-10-16 02:40:36,955 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:40:36" (1/1) ... [2021-10-16 02:40:36,974 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:40:36,976 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:40:36,976 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:40:36,976 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:40:36,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:40:36" (1/1) ... [2021-10-16 02:40:36,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:40:36" (1/1) ... [2021-10-16 02:40:36,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:40:36" (1/1) ... [2021-10-16 02:40:36,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:40:36" (1/1) ... [2021-10-16 02:40:36,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:40:36" (1/1) ... [2021-10-16 02:40:36,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:40:36" (1/1) ... [2021-10-16 02:40:36,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:40:36" (1/1) ... [2021-10-16 02:40:36,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:40:37,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:40:37,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:40:37,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:40:37,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:40:36" (1/1) ... [2021-10-16 02:40:37,009 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:40:37,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f93002-27d2-4c33-8194-1d08f45910ac/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:40:37,036 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f93002-27d2-4c33-8194-1d08f45910ac/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:40:37,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f93002-27d2-4c33-8194-1d08f45910ac/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:40:37,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 02:40:37,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-16 02:40:37,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:40:37,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 02:40:37,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:40:37,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:40:37,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:40:37,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:40:37,338 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:40:37,339 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-16 02:40:37,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:40:37 BoogieIcfgContainer [2021-10-16 02:40:37,342 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:40:37,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:40:37,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:40:37,348 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:40:37,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:40:36" (1/3) ... [2021-10-16 02:40:37,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@138b6dbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:40:37, skipping insertion in model container [2021-10-16 02:40:37,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:40:36" (2/3) ... [2021-10-16 02:40:37,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@138b6dbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:40:37, skipping insertion in model container [2021-10-16 02:40:37,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:40:37" (3/3) ... [2021-10-16 02:40:37,351 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158-1.i [2021-10-16 02:40:37,357 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:40:37,357 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-16 02:40:37,409 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:40:37,428 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 02:40:37,429 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-10-16 02:40:37,444 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 8 states have (on average 2.25) internal successors, (18), 18 states have internal predecessors, (18), 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 02:40:37,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-16 02:40:37,476 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:40:37,477 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-16 02:40:37,478 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-10-16 02:40:37,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:40:37,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1678, now seen corresponding path program 1 times [2021-10-16 02:40:37,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:40:37,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359350676] [2021-10-16 02:40:37,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:40:37,509 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:40:37,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:40:37,739 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 02:40:37,740 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:40:37,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359350676] [2021-10-16 02:40:37,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359350676] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:40:37,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:40:37,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-16 02:40:37,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586513733] [2021-10-16 02:40:37,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:40:37,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:40:37,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:40:37,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:40:37,768 INFO L87 Difference]: Start difference. First operand has 19 states, 8 states have (on average 2.25) internal successors, (18), 18 states have internal predecessors, (18), 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 02:40:37,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:40:37,807 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2021-10-16 02:40:37,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:40:37,809 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 02:40:37,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:40:37,817 INFO L225 Difference]: With dead ends: 16 [2021-10-16 02:40:37,818 INFO L226 Difference]: Without dead ends: 15 [2021-10-16 02:40:37,819 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:40:37,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-16 02:40:37,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-16 02:40:37,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 8 states have (on average 1.75) internal successors, (14), 14 states have internal predecessors, (14), 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 02:40:37,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2021-10-16 02:40:37,851 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 2 [2021-10-16 02:40:37,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:40:37,852 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2021-10-16 02:40:37,852 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 02:40:37,852 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2021-10-16 02:40:37,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-16 02:40:37,853 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:40:37,853 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-16 02:40:37,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:40:37,854 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-10-16 02:40:37,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:40:37,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1679, now seen corresponding path program 1 times [2021-10-16 02:40:37,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:40:37,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787653721] [2021-10-16 02:40:37,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:40:37,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:40:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:40:37,911 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 02:40:37,912 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:40:37,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787653721] [2021-10-16 02:40:37,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787653721] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:40:37,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:40:37,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-16 02:40:37,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436945481] [2021-10-16 02:40:37,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:40:37,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:40:37,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:40:37,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:40:37,917 INFO L87 Difference]: Start difference. First operand 15 states and 14 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 02:40:37,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:40:37,930 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2021-10-16 02:40:37,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:40:37,931 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 02:40:37,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:40:37,932 INFO L225 Difference]: With dead ends: 12 [2021-10-16 02:40:37,932 INFO L226 Difference]: Without dead ends: 12 [2021-10-16 02:40:37,933 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:40:37,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-16 02:40:37,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-16 02:40:37,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.375) internal successors, (11), 11 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:40:37,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2021-10-16 02:40:37,936 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 2 [2021-10-16 02:40:37,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:40:37,936 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2021-10-16 02:40:37,937 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 02:40:37,937 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2021-10-16 02:40:37,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 02:40:37,937 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:40:37,938 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 02:40:37,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:40:37,938 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-10-16 02:40:37,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:40:37,939 INFO L82 PathProgramCache]: Analyzing trace with hash 50621959, now seen corresponding path program 1 times [2021-10-16 02:40:37,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:40:37,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550575395] [2021-10-16 02:40:37,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:40:37,941 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:40:37,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:40:38,055 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 02:40:38,055 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:40:38,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550575395] [2021-10-16 02:40:38,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550575395] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:40:38,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:40:38,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:40:38,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735346535] [2021-10-16 02:40:38,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:40:38,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:40:38,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:40:38,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:40:38,063 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 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 02:40:38,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:40:38,109 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2021-10-16 02:40:38,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:40:38,109 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 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) Word has length 5 [2021-10-16 02:40:38,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:40:38,110 INFO L225 Difference]: With dead ends: 11 [2021-10-16 02:40:38,110 INFO L226 Difference]: Without dead ends: 11 [2021-10-16 02:40:38,111 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.0ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:40:38,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-16 02:40:38,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-16 02:40:38,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 8 states have (on average 1.25) internal successors, (10), 10 states have internal predecessors, (10), 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 02:40:38,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2021-10-16 02:40:38,113 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 5 [2021-10-16 02:40:38,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:40:38,113 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2021-10-16 02:40:38,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 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 02:40:38,114 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2021-10-16 02:40:38,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 02:40:38,114 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:40:38,115 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 02:40:38,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 02:40:38,115 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-10-16 02:40:38,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:40:38,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1569280775, now seen corresponding path program 1 times [2021-10-16 02:40:38,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:40:38,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702518435] [2021-10-16 02:40:38,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:40:38,117 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:40:38,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:40:38,212 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 02:40:38,213 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:40:38,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702518435] [2021-10-16 02:40:38,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702518435] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:40:38,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:40:38,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:40:38,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822416243] [2021-10-16 02:40:38,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:40:38,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:40:38,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:40:38,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:40:38,239 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 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 02:40:38,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:40:38,288 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2021-10-16 02:40:38,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:40:38,289 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 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 [2021-10-16 02:40:38,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:40:38,290 INFO L225 Difference]: With dead ends: 10 [2021-10-16 02:40:38,290 INFO L226 Difference]: Without dead ends: 10 [2021-10-16 02:40:38,291 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.5ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:40:38,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-16 02:40:38,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-16 02:40:38,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 8 states have (on average 1.125) 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 02:40:38,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2021-10-16 02:40:38,295 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 6 [2021-10-16 02:40:38,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:40:38,297 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2021-10-16 02:40:38,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 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 02:40:38,298 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2021-10-16 02:40:38,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 02:40:38,298 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:40:38,298 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:40:38,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 02:40:38,300 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-10-16 02:40:38,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:40:38,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1403063817, now seen corresponding path program 1 times [2021-10-16 02:40:38,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:40:38,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063770286] [2021-10-16 02:40:38,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:40:38,303 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:40:38,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:40:38,408 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 02:40:38,408 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:40:38,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063770286] [2021-10-16 02:40:38,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063770286] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:40:38,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:40:38,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:40:38,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466368960] [2021-10-16 02:40:38,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:40:38,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:40:38,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:40:38,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:40:38,413 INFO L87 Difference]: Start difference. First operand 10 states and 9 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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 02:40:38,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:40:38,453 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2021-10-16 02:40:38,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:40:38,454 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-16 02:40:38,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:40:38,455 INFO L225 Difference]: With dead ends: 9 [2021-10-16 02:40:38,455 INFO L226 Difference]: Without dead ends: 9 [2021-10-16 02:40:38,455 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.2ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:40:38,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-16 02:40:38,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-16 02:40:38,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:40:38,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-16 02:40:38,459 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 7 [2021-10-16 02:40:38,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:40:38,459 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-16 02:40:38,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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 02:40:38,460 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-16 02:40:38,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 02:40:38,461 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:40:38,461 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:40:38,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-16 02:40:38,461 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-10-16 02:40:38,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:40:38,462 INFO L82 PathProgramCache]: Analyzing trace with hash 545305418, now seen corresponding path program 1 times [2021-10-16 02:40:38,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:40:38,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655297532] [2021-10-16 02:40:38,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:40:38,463 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:40:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:40:38,678 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 02:40:38,678 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:40:38,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655297532] [2021-10-16 02:40:38,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655297532] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:40:38,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:40:38,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:40:38,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899381476] [2021-10-16 02:40:38,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:40:38,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:40:38,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:40:38,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:40:38,681 INFO L87 Difference]: Start difference. First operand 9 states and 8 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 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) [2021-10-16 02:40:38,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:40:38,740 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2021-10-16 02:40:38,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:40:38,740 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 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 [2021-10-16 02:40:38,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:40:38,741 INFO L225 Difference]: With dead ends: 8 [2021-10-16 02:40:38,741 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:40:38,741 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.3ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:40:38,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:40:38,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:40:38,742 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 02:40:38,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:40:38,742 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-10-16 02:40:38,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:40:38,743 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:40:38,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 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) [2021-10-16 02:40:38,743 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:40:38,743 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:40:38,746 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-16 02:40:38,746 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-16 02:40:38,746 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-16 02:40:38,747 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-16 02:40:38,747 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-16 02:40:38,747 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-16 02:40:38,747 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 02:40:38,747 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 02:40:38,748 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 02:40:38,748 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 02:40:38,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-16 02:40:38,753 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:40:38,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:40:38 BoogieIcfgContainer [2021-10-16 02:40:38,755 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:40:38,756 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:40:38,756 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:40:38,756 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:40:38,757 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:40:37" (3/4) ... [2021-10-16 02:40:38,760 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:40:38,771 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-16 02:40:38,771 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-16 02:40:38,771 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-16 02:40:38,772 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:40:38,812 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f93002-27d2-4c33-8194-1d08f45910ac/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:40:38,812 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:40:38,814 INFO L168 Benchmark]: Toolchain (without parser) took 2443.65 ms. Allocated memory was 94.4 MB in the beginning and 123.7 MB in the end (delta: 29.4 MB). Free memory was 57.7 MB in the beginning and 71.0 MB in the end (delta: -13.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:40:38,815 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 94.4 MB. Free memory was 66.6 MB in the beginning and 66.5 MB in the end (delta: 28.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:40:38,816 INFO L168 Benchmark]: CACSL2BoogieTranslator took 530.69 ms. Allocated memory was 94.4 MB in the beginning and 123.7 MB in the end (delta: 29.4 MB). Free memory was 57.5 MB in the beginning and 92.9 MB in the end (delta: -35.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:40:38,817 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.64 ms. Allocated memory is still 123.7 MB. Free memory was 92.9 MB in the beginning and 91.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:40:38,817 INFO L168 Benchmark]: Boogie Preprocessor took 23.48 ms. Allocated memory is still 123.7 MB. Free memory was 91.4 MB in the beginning and 90.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:40:38,818 INFO L168 Benchmark]: RCFGBuilder took 341.68 ms. Allocated memory is still 123.7 MB. Free memory was 90.1 MB in the beginning and 78.8 MB in the end (delta: 11.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:40:38,821 INFO L168 Benchmark]: TraceAbstraction took 1411.86 ms. Allocated memory is still 123.7 MB. Free memory was 78.2 MB in the beginning and 73.1 MB in the end (delta: 5.1 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:40:38,821 INFO L168 Benchmark]: Witness Printer took 56.53 ms. Allocated memory is still 123.7 MB. Free memory was 73.1 MB in the beginning and 71.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:40:38,823 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 94.4 MB. Free memory was 66.6 MB in the beginning and 66.5 MB in the end (delta: 28.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 530.69 ms. Allocated memory was 94.4 MB in the beginning and 123.7 MB in the end (delta: 29.4 MB). Free memory was 57.5 MB in the beginning and 92.9 MB in the end (delta: -35.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.64 ms. Allocated memory is still 123.7 MB. Free memory was 92.9 MB in the beginning and 91.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.48 ms. Allocated memory is still 123.7 MB. Free memory was 91.4 MB in the beginning and 90.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 341.68 ms. Allocated memory is still 123.7 MB. Free memory was 90.1 MB in the beginning and 78.8 MB in the end (delta: 11.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1411.86 ms. Allocated memory is still 123.7 MB. Free memory was 78.2 MB in the beginning and 73.1 MB in the end (delta: 5.1 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. * Witness Printer took 56.53 ms. Allocated memory is still 123.7 MB. Free memory was 73.1 MB in the beginning and 71.0 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: 533]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 533]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 535]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 535]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 523]: 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, 19 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 1345.5ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 39.0ms, AutomataDifference: 311.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 27 SDtfs, 40 SDslu, 14 SDs, 0 SdLazy, 90 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 126.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 0 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 166.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 28.6ms AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 24.7ms SsaConstructionTime, 156.3ms SatisfiabilityAnalysisTime, 522.6ms InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 315 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-16 02:40:38,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f93002-27d2-4c33-8194-1d08f45910ac/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...