./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0158-3.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_65f76653-8a58-4bae-a32e-7b8f4ca310ec/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f76653-8a58-4bae-a32e-7b8f4ca310ec/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_65f76653-8a58-4bae-a32e-7b8f4ca310ec/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f76653-8a58-4bae-a32e-7b8f4ca310ec/bin/utaipan-mTDlp9Zugs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0158-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f76653-8a58-4bae-a32e-7b8f4ca310ec/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_65f76653-8a58-4bae-a32e-7b8f4ca310ec/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 e7e4a97fa815d265dd112866b503fcff377f0496 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-free) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:08:54,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:08:54,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:08:54,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:08:54,879 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:08:54,886 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:08:54,889 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:08:54,895 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:08:54,899 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:08:54,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:08:54,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:08:54,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:08:54,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:08:54,917 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:08:54,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:08:54,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:08:54,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:08:54,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:08:54,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:08:54,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:08:54,948 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:08:54,950 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:08:54,955 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:08:54,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:08:54,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:08:54,967 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:08:54,968 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:08:54,970 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:08:54,971 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:08:54,973 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:08:54,974 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:08:54,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:08:54,978 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:08:54,979 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:08:54,981 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:08:54,982 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:08:54,983 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:08:54,983 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:08:54,983 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:08:54,985 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:08:54,985 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:08:54,987 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f76653-8a58-4bae-a32e-7b8f4ca310ec/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-16 03:08:55,028 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:08:55,028 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:08:55,029 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:08:55,030 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:08:55,030 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:08:55,030 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:08:55,030 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 03:08:55,031 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:08:55,031 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:08:55,031 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 03:08:55,031 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 03:08:55,032 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:08:55,032 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 03:08:55,032 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 03:08:55,032 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 03:08:55,033 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-16 03:08:55,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-16 03:08:55,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:08:55,034 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:08:55,035 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-16 03:08:55,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 03:08:55,035 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:08:55,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:08:55,036 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-16 03:08:55,036 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-16 03:08:55,036 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-16 03:08:55,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:08:55,037 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:08:55,037 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:08:55,037 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:08:55,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:08:55,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:08:55,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:08:55,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:08:55,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:08:55,039 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 03:08:55,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 03:08:55,040 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:08:55,040 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:08:55,040 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_65f76653-8a58-4bae-a32e-7b8f4ca310ec/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f76653-8a58-4bae-a32e-7b8f4ca310ec/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7e4a97fa815d265dd112866b503fcff377f0496 [2021-10-16 03:08:55,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:08:55,327 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:08:55,330 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:08:55,332 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:08:55,333 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:08:55,334 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f76653-8a58-4bae-a32e-7b8f4ca310ec/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/memsafety/test-0158-3.i [2021-10-16 03:08:55,434 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f76653-8a58-4bae-a32e-7b8f4ca310ec/bin/utaipan-mTDlp9Zugs/data/a0fc1da9a/e4ea33363a2c4aa5854235da15a67365/FLAG5d684cd99 [2021-10-16 03:08:56,128 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:08:56,129 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f76653-8a58-4bae-a32e-7b8f4ca310ec/sv-benchmarks/c/memsafety/test-0158-3.i [2021-10-16 03:08:56,158 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f76653-8a58-4bae-a32e-7b8f4ca310ec/bin/utaipan-mTDlp9Zugs/data/a0fc1da9a/e4ea33363a2c4aa5854235da15a67365/FLAG5d684cd99 [2021-10-16 03:08:56,384 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f76653-8a58-4bae-a32e-7b8f4ca310ec/bin/utaipan-mTDlp9Zugs/data/a0fc1da9a/e4ea33363a2c4aa5854235da15a67365 [2021-10-16 03:08:56,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:08:56,390 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:08:56,401 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:08:56,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:08:56,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:08:56,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:08:56" (1/1) ... [2021-10-16 03:08:56,414 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f228a6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:08:56, skipping insertion in model container [2021-10-16 03:08:56,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:08:56" (1/1) ... [2021-10-16 03:08:56,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:08:56,475 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:08:56,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:08:56,892 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:08:56,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:08:56,988 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:08:56,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:08:56 WrapperNode [2021-10-16 03:08:56,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:08:56,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:08:56,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:08:56,991 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:08:57,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:08:56" (1/1) ... [2021-10-16 03:08:57,019 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:08:56" (1/1) ... [2021-10-16 03:08:57,044 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:08:57,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:08:57,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:08:57,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:08:57,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:08:56" (1/1) ... [2021-10-16 03:08:57,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:08:56" (1/1) ... [2021-10-16 03:08:57,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:08:56" (1/1) ... [2021-10-16 03:08:57,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:08:56" (1/1) ... [2021-10-16 03:08:57,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:08:56" (1/1) ... [2021-10-16 03:08:57,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:08:56" (1/1) ... [2021-10-16 03:08:57,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:08:56" (1/1) ... [2021-10-16 03:08:57,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:08:57,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:08:57,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:08:57,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:08:57,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:08:56" (1/1) ... [2021-10-16 03:08:57,114 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:08:57,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f76653-8a58-4bae-a32e-7b8f4ca310ec/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:08:57,141 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f76653-8a58-4bae-a32e-7b8f4ca310ec/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:08:57,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f76653-8a58-4bae-a32e-7b8f4ca310ec/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:08:57,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 03:08:57,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 03:08:57,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-16 03:08:57,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:08:57,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 03:08:57,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 03:08:57,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 03:08:57,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:08:57,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:08:57,572 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:08:57,572 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-16 03:08:57,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:08:57 BoogieIcfgContainer [2021-10-16 03:08:57,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:08:57,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:08:57,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:08:57,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:08:57,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:08:56" (1/3) ... [2021-10-16 03:08:57,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a8fad35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:08:57, skipping insertion in model container [2021-10-16 03:08:57,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:08:56" (2/3) ... [2021-10-16 03:08:57,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a8fad35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:08:57, skipping insertion in model container [2021-10-16 03:08:57,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:08:57" (3/3) ... [2021-10-16 03:08:57,599 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158-3.i [2021-10-16 03:08:57,606 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:08:57,606 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2021-10-16 03:08:57,666 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:08:57,674 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 03:08:57,674 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-10-16 03:08:57,692 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 30 states have internal predecessors, (30), 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 03:08:57,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-16 03:08:57,699 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:08:57,700 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-16 03:08:57,700 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-16 03:08:57,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:08:57,707 INFO L82 PathProgramCache]: Analyzing trace with hash 2143, now seen corresponding path program 1 times [2021-10-16 03:08:57,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:08:57,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183820678] [2021-10-16 03:08:57,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:57,721 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:08:57,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:08:57,939 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 03:08:57,940 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:08:57,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183820678] [2021-10-16 03:08:57,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183820678] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:08:57,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:08:57,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-16 03:08:57,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274903424] [2021-10-16 03:08:57,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:08:57,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:08:57,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:08:57,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:57,987 INFO L87 Difference]: Start difference. First operand has 31 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 30 states have internal predecessors, (30), 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 03:08:58,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:08:58,093 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2021-10-16 03:08:58,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:08:58,095 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 03:08:58,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:08:58,104 INFO L225 Difference]: With dead ends: 26 [2021-10-16 03:08:58,104 INFO L226 Difference]: Without dead ends: 25 [2021-10-16 03:08:58,106 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:58,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-16 03:08:58,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-10-16 03:08:58,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 24 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:58,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 24 transitions. [2021-10-16 03:08:58,137 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 24 transitions. Word has length 2 [2021-10-16 03:08:58,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:08:58,137 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 24 transitions. [2021-10-16 03:08:58,138 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 03:08:58,138 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 24 transitions. [2021-10-16 03:08:58,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-16 03:08:58,138 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:08:58,138 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-16 03:08:58,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 03:08:58,139 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-16 03:08:58,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:08:58,140 INFO L82 PathProgramCache]: Analyzing trace with hash 2144, now seen corresponding path program 1 times [2021-10-16 03:08:58,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:08:58,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625705401] [2021-10-16 03:08:58,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:58,141 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:08:58,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:08:58,209 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 03:08:58,209 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:08:58,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625705401] [2021-10-16 03:08:58,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625705401] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:08:58,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:08:58,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-16 03:08:58,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725338777] [2021-10-16 03:08:58,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:08:58,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:08:58,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:08:58,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:58,214 INFO L87 Difference]: Start difference. First operand 25 states and 24 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 03:08:58,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:08:58,238 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2021-10-16 03:08:58,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:08:58,238 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 03:08:58,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:08:58,239 INFO L225 Difference]: With dead ends: 20 [2021-10-16 03:08:58,239 INFO L226 Difference]: Without dead ends: 20 [2021-10-16 03:08:58,240 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:08:58,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-16 03:08:58,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-16 03:08:58,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 19 states have internal predecessors, (19), 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 03:08:58,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2021-10-16 03:08:58,244 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 2 [2021-10-16 03:08:58,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:08:58,245 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2021-10-16 03:08:58,245 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 03:08:58,245 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2021-10-16 03:08:58,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 03:08:58,246 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:08:58,246 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:08:58,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 03:08:58,247 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-16 03:08:58,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:08:58,248 INFO L82 PathProgramCache]: Analyzing trace with hash 2146442196, now seen corresponding path program 1 times [2021-10-16 03:08:58,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:08:58,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309354882] [2021-10-16 03:08:58,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:58,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:08:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:08:58,401 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 03:08:58,402 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:08:58,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309354882] [2021-10-16 03:08:58,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309354882] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:08:58,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:08:58,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:08:58,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605511963] [2021-10-16 03:08:58,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 03:08:58,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:08:58,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 03:08:58,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 03:08:58,419 INFO L87 Difference]: Start difference. First operand 20 states and 19 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 03:08:58,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:08:58,500 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2021-10-16 03:08:58,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 03:08:58,501 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 03:08:58,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:08:58,502 INFO L225 Difference]: With dead ends: 19 [2021-10-16 03:08:58,502 INFO L226 Difference]: Without dead ends: 19 [2021-10-16 03:08:58,503 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.2ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:08:58,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-16 03:08:58,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-16 03:08:58,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.3846153846153846) 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 03:08:58,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2021-10-16 03:08:58,506 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 7 [2021-10-16 03:08:58,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:08:58,507 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2021-10-16 03:08:58,507 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 03:08:58,507 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2021-10-16 03:08:58,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 03:08:58,508 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:08:58,508 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:08:58,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 03:08:58,509 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-16 03:08:58,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:08:58,510 INFO L82 PathProgramCache]: Analyzing trace with hash 2115198689, now seen corresponding path program 1 times [2021-10-16 03:08:58,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:08:58,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769240340] [2021-10-16 03:08:58,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:58,511 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:08:58,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:08:58,668 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 03:08:58,668 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:08:58,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769240340] [2021-10-16 03:08:58,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769240340] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:08:58,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:08:58,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:08:58,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093122594] [2021-10-16 03:08:58,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 03:08:58,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:08:58,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 03:08:58,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 03:08:58,677 INFO L87 Difference]: Start difference. First operand 19 states and 18 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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 03:08:58,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:08:58,754 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2021-10-16 03:08:58,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 03:08:58,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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 03:08:58,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:08:58,756 INFO L225 Difference]: With dead ends: 18 [2021-10-16 03:08:58,756 INFO L226 Difference]: Without dead ends: 18 [2021-10-16 03:08:58,757 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.4ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:08:58,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-16 03:08:58,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-16 03:08:58,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 17 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:58,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2021-10-16 03:08:58,763 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 8 [2021-10-16 03:08:58,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:08:58,765 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2021-10-16 03:08:58,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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 03:08:58,766 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2021-10-16 03:08:58,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 03:08:58,767 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:08:58,767 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:08:58,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 03:08:58,768 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-16 03:08:58,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:08:58,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1146649974, now seen corresponding path program 1 times [2021-10-16 03:08:58,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:08:58,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837412225] [2021-10-16 03:08:58,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:58,774 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:08:58,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:08:58,909 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 03:08:58,909 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:08:58,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837412225] [2021-10-16 03:08:58,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837412225] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:08:58,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:08:58,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:08:58,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360515761] [2021-10-16 03:08:58,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 03:08:58,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:08:58,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 03:08:58,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 03:08:58,913 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 03:08:58,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:08:58,961 INFO L93 Difference]: Finished difference Result 17 states and 16 transitions. [2021-10-16 03:08:58,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 03:08:58,962 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2021-10-16 03:08:58,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:08:58,963 INFO L225 Difference]: With dead ends: 17 [2021-10-16 03:08:58,963 INFO L226 Difference]: Without dead ends: 17 [2021-10-16 03:08:58,964 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.8ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:08:58,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-16 03:08:58,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-16 03:08:58,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 16 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:58,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 16 transitions. [2021-10-16 03:08:58,967 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 16 transitions. Word has length 9 [2021-10-16 03:08:58,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:08:58,968 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 16 transitions. [2021-10-16 03:08:58,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 03:08:58,968 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 16 transitions. [2021-10-16 03:08:58,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 03:08:58,969 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:08:58,969 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:08:58,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-16 03:08:58,970 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-16 03:08:58,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:08:58,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1186410883, now seen corresponding path program 1 times [2021-10-16 03:08:58,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:08:58,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601819983] [2021-10-16 03:08:58,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:58,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:08:58,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:08:59,081 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 03:08:59,082 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:08:59,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601819983] [2021-10-16 03:08:59,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601819983] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:08:59,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:08:59,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:08:59,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989758882] [2021-10-16 03:08:59,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 03:08:59,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:08:59,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 03:08:59,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 03:08:59,095 INFO L87 Difference]: Start difference. First operand 17 states and 16 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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 03:08:59,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:08:59,132 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2021-10-16 03:08:59,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 03:08:59,133 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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) Word has length 10 [2021-10-16 03:08:59,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:08:59,134 INFO L225 Difference]: With dead ends: 16 [2021-10-16 03:08:59,134 INFO L226 Difference]: Without dead ends: 16 [2021-10-16 03:08:59,135 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.2ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:08:59,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-16 03:08:59,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-16 03:08:59,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 15 states have internal predecessors, (15), 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 03:08:59,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2021-10-16 03:08:59,138 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 10 [2021-10-16 03:08:59,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:08:59,138 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2021-10-16 03:08:59,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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 03:08:59,139 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2021-10-16 03:08:59,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-16 03:08:59,139 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:08:59,140 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:08:59,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-16 03:08:59,140 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-16 03:08:59,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:08:59,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1875968232, now seen corresponding path program 1 times [2021-10-16 03:08:59,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:08:59,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016238508] [2021-10-16 03:08:59,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:59,142 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:08:59,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:08:59,230 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 03:08:59,230 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:08:59,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016238508] [2021-10-16 03:08:59,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016238508] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:08:59,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:08:59,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:08:59,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148043938] [2021-10-16 03:08:59,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 03:08:59,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:08:59,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 03:08:59,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 03:08:59,234 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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 03:08:59,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:08:59,284 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2021-10-16 03:08:59,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 03:08:59,285 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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) Word has length 11 [2021-10-16 03:08:59,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:08:59,286 INFO L225 Difference]: With dead ends: 15 [2021-10-16 03:08:59,287 INFO L226 Difference]: Without dead ends: 15 [2021-10-16 03:08:59,288 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.4ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:08:59,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-16 03:08:59,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-16 03:08:59,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.0769230769230769) 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 03:08:59,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2021-10-16 03:08:59,305 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 11 [2021-10-16 03:08:59,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:08:59,306 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2021-10-16 03:08:59,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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 03:08:59,306 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2021-10-16 03:08:59,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-16 03:08:59,307 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:08:59,307 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:08:59,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-16 03:08:59,308 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-16 03:08:59,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:08:59,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1974527013, now seen corresponding path program 1 times [2021-10-16 03:08:59,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:08:59,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202908979] [2021-10-16 03:08:59,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:59,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:08:59,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 03:08:59,365 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 03:08:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 03:08:59,446 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-16 03:08:59,446 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 03:08:59,448 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 03:08:59,450 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-16 03:08:59,450 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-16 03:08:59,450 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-16 03:08:59,451 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-16 03:08:59,451 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-16 03:08:59,451 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-16 03:08:59,451 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-16 03:08:59,451 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-16 03:08:59,452 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-16 03:08:59,452 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-16 03:08:59,452 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 03:08:59,452 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 03:08:59,453 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 03:08:59,453 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 03:08:59,453 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 03:08:59,453 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 03:08:59,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-16 03:08:59,465 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 03:08:59,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 03:08:59 BoogieIcfgContainer [2021-10-16 03:08:59,492 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 03:08:59,492 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 03:08:59,493 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 03:08:59,493 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 03:08:59,493 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:08:57" (3/4) ... [2021-10-16 03:08:59,495 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-16 03:08:59,538 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f76653-8a58-4bae-a32e-7b8f4ca310ec/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 03:08:59,538 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 03:08:59,540 INFO L168 Benchmark]: Toolchain (without parser) took 3149.46 ms. Allocated memory was 100.7 MB in the beginning and 138.4 MB in the end (delta: 37.7 MB). Free memory was 65.1 MB in the beginning and 69.4 MB in the end (delta: -4.2 MB). Peak memory consumption was 36.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:08:59,541 INFO L168 Benchmark]: CDTParser took 1.16 ms. Allocated memory is still 100.7 MB. Free memory is still 53.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:08:59,542 INFO L168 Benchmark]: CACSL2BoogieTranslator took 588.87 ms. Allocated memory was 100.7 MB in the beginning and 138.4 MB in the end (delta: 37.7 MB). Free memory was 64.9 MB in the beginning and 103.5 MB in the end (delta: -38.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 03:08:59,542 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.29 ms. Allocated memory is still 138.4 MB. Free memory was 103.5 MB in the beginning and 101.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:08:59,543 INFO L168 Benchmark]: Boogie Preprocessor took 29.45 ms. Allocated memory is still 138.4 MB. Free memory was 101.5 MB in the beginning and 100.7 MB in the end (delta: 862.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:08:59,544 INFO L168 Benchmark]: RCFGBuilder took 500.41 ms. Allocated memory is still 138.4 MB. Free memory was 100.7 MB in the beginning and 87.5 MB in the end (delta: 13.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-16 03:08:59,544 INFO L168 Benchmark]: TraceAbstraction took 1915.05 ms. Allocated memory is still 138.4 MB. Free memory was 87.5 MB in the beginning and 71.5 MB in the end (delta: 16.0 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. [2021-10-16 03:08:59,545 INFO L168 Benchmark]: Witness Printer took 45.95 ms. Allocated memory is still 138.4 MB. Free memory was 71.5 MB in the beginning and 69.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:08:59,549 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.16 ms. Allocated memory is still 100.7 MB. Free memory is still 53.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 588.87 ms. Allocated memory was 100.7 MB in the beginning and 138.4 MB in the end (delta: 37.7 MB). Free memory was 64.9 MB in the beginning and 103.5 MB in the end (delta: -38.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.29 ms. Allocated memory is still 138.4 MB. Free memory was 103.5 MB in the beginning and 101.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.45 ms. Allocated memory is still 138.4 MB. Free memory was 101.5 MB in the beginning and 100.7 MB in the end (delta: 862.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 500.41 ms. Allocated memory is still 138.4 MB. Free memory was 100.7 MB in the beginning and 87.5 MB in the end (delta: 13.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1915.05 ms. Allocated memory is still 138.4 MB. Free memory was 87.5 MB in the beginning and 71.5 MB in the end (delta: 16.0 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. * Witness Printer took 45.95 ms. Allocated memory is still 138.4 MB. Free memory was 71.5 MB in the beginning and 69.4 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 - CounterExampleResult [Line: 655]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L642-L649] union { void *p0; struct { char c[2]; void *p1; void *p2; } str; } data; [L650] data.p0 = malloc(37U) [L651] data.str.p2 = &data [L652] EXPR data.p0 [L652] void *ptr = data.p0; [L653] data.str.c[1] = sizeof data.str.p1 [L654] EXPR data.p0 [L654] free(data.p0) [L654] free(data.p0) [L654] free(data.p0) [L655] free(ptr) [L655] free(ptr) [L655] free(ptr) - UnprovableResult [Line: 650]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 650]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 651]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 651]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 652]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 652]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 653]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 653]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 654]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 654]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 654]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 654]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 654]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 655]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 655]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 640]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 1798.1ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 15.9ms, AutomataDifference: 488.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 65 SDtfs, 85 SDslu, 58 SDs, 0 SdLazy, 153 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 226.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 8 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 171.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 51.6ms AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 38.0ms SsaConstructionTime, 238.9ms SatisfiabilityAnalysisTime, 585.2ms InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 328 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-16 03:08:59,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f76653-8a58-4bae-a32e-7b8f4ca310ec/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...