./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-manipulation/merge_sort-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495f3650-525a-41d0-9717-2d4d7de157ef/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495f3650-525a-41d0-9717-2d4d7de157ef/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495f3650-525a-41d0-9717-2d4d7de157ef/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495f3650-525a-41d0-9717-2d4d7de157ef/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-manipulation/merge_sort-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495f3650-525a-41d0-9717-2d4d7de157ef/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495f3650-525a-41d0-9717-2d4d7de157ef/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 15d1d7d49ed223522c6431664b8ff836ebc81296f5e11773e2197361bd8b13cf ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:56:33,798 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:56:33,801 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:56:33,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:56:33,861 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:56:33,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:56:33,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:56:33,872 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:56:33,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:56:33,881 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:56:33,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:56:33,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:56:33,885 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:56:33,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:56:33,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:56:33,895 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:56:33,897 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:56:33,898 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:56:33,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:56:33,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:56:33,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:56:33,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:56:33,915 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:56:33,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:56:33,925 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:56:33,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:56:33,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:56:33,928 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:56:33,929 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:56:33,931 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:56:33,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:56:33,932 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:56:33,934 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:56:33,935 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:56:33,937 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:56:33,937 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:56:33,938 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:56:33,938 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:56:33,939 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:56:33,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:56:33,940 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:56:33,941 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495f3650-525a-41d0-9717-2d4d7de157ef/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:56:33,983 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:56:33,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:56:33,984 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:56:33,985 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:56:33,987 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:56:33,988 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:56:33,988 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:56:33,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:56:33,989 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:56:33,989 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:56:33,990 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:56:33,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:56:33,990 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:56:33,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:56:33,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:56:33,991 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:56:33,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:56:33,992 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:56:33,992 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:56:33,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:56:33,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:56:33,993 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:56:33,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:56:33,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:56:33,994 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:56:33,994 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:56:33,994 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:56:33,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:56:33,995 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:56:33,996 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:56:33,997 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:56:33,997 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:56:33,997 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495f3650-525a-41d0-9717-2d4d7de157ef/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495f3650-525a-41d0-9717-2d4d7de157ef/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 15d1d7d49ed223522c6431664b8ff836ebc81296f5e11773e2197361bd8b13cf [2021-10-21 19:56:34,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:56:34,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:56:34,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:56:34,304 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:56:34,305 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:56:34,306 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495f3650-525a-41d0-9717-2d4d7de157ef/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/heap-manipulation/merge_sort-1.i [2021-10-21 19:56:34,366 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495f3650-525a-41d0-9717-2d4d7de157ef/bin/uautomizer-j4sWxH34Be/data/cae54aaf3/6dac9698169e434085c4aba1783055a1/FLAGc04b03689 [2021-10-21 19:56:34,999 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:56:34,999 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495f3650-525a-41d0-9717-2d4d7de157ef/sv-benchmarks/c/heap-manipulation/merge_sort-1.i [2021-10-21 19:56:35,013 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495f3650-525a-41d0-9717-2d4d7de157ef/bin/uautomizer-j4sWxH34Be/data/cae54aaf3/6dac9698169e434085c4aba1783055a1/FLAGc04b03689 [2021-10-21 19:56:35,252 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495f3650-525a-41d0-9717-2d4d7de157ef/bin/uautomizer-j4sWxH34Be/data/cae54aaf3/6dac9698169e434085c4aba1783055a1 [2021-10-21 19:56:35,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:56:35,257 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:56:35,277 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:56:35,277 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:56:35,281 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:56:35,282 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:56:35" (1/1) ... [2021-10-21 19:56:35,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3486536c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:56:35, skipping insertion in model container [2021-10-21 19:56:35,285 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:56:35" (1/1) ... [2021-10-21 19:56:35,293 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:56:35,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:56:35,695 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495f3650-525a-41d0-9717-2d4d7de157ef/sv-benchmarks/c/heap-manipulation/merge_sort-1.i[22632,22645] [2021-10-21 19:56:35,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:56:35,768 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:56:35,833 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495f3650-525a-41d0-9717-2d4d7de157ef/sv-benchmarks/c/heap-manipulation/merge_sort-1.i[22632,22645] [2021-10-21 19:56:35,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:56:35,902 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:56:35,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:56:35 WrapperNode [2021-10-21 19:56:35,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:56:35,904 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:56:35,904 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:56:35,904 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:56:35,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:56:35" (1/1) ... [2021-10-21 19:56:35,935 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:56:35" (1/1) ... [2021-10-21 19:56:35,980 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:56:35,981 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:56:35,981 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:56:35,981 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:56:35,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:56:35" (1/1) ... [2021-10-21 19:56:35,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:56:35" (1/1) ... [2021-10-21 19:56:36,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:56:35" (1/1) ... [2021-10-21 19:56:36,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:56:35" (1/1) ... [2021-10-21 19:56:36,016 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:56:35" (1/1) ... [2021-10-21 19:56:36,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:56:35" (1/1) ... [2021-10-21 19:56:36,029 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:56:35" (1/1) ... [2021-10-21 19:56:36,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:56:36,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:56:36,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:56:36,050 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:56:36,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:56:35" (1/1) ... [2021-10-21 19:56:36,073 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:56:36,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495f3650-525a-41d0-9717-2d4d7de157ef/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:56:36,115 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495f3650-525a-41d0-9717-2d4d7de157ef/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:56:36,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495f3650-525a-41d0-9717-2d4d7de157ef/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:56:36,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 19:56:36,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 19:56:36,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-21 19:56:36,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-21 19:56:36,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:56:36,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-21 19:56:36,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:56:36,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:56:36,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:56:36,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:56:36,860 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:56:36,860 INFO L299 CfgBuilder]: Removed 75 assume(true) statements. [2021-10-21 19:56:36,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:56:36 BoogieIcfgContainer [2021-10-21 19:56:36,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:56:36,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:56:36,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:56:36,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:56:36,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:56:35" (1/3) ... [2021-10-21 19:56:36,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9b565c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:56:36, skipping insertion in model container [2021-10-21 19:56:36,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:56:35" (2/3) ... [2021-10-21 19:56:36,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9b565c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:56:36, skipping insertion in model container [2021-10-21 19:56:36,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:56:36" (3/3) ... [2021-10-21 19:56:36,872 INFO L111 eAbstractionObserver]: Analyzing ICFG merge_sort-1.i [2021-10-21 19:56:36,877 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:56:36,878 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2021-10-21 19:56:36,929 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:56:36,935 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2021-10-21 19:56:36,935 INFO L340 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-10-21 19:56:36,954 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 85 states have (on average 1.8705882352941177) internal successors, (159), 98 states have internal predecessors, (159), 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) [2021-10-21 19:56:36,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-21 19:56:36,959 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:56:36,960 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:56:36,960 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 19:56:36,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:56:36,966 INFO L82 PathProgramCache]: Analyzing trace with hash 890218827, now seen corresponding path program 1 times [2021-10-21 19:56:37,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:56:37,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927607484] [2021-10-21 19:56:37,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:56:37,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:56:37,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:56:37,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:56:37,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:56:37,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927607484] [2021-10-21 19:56:37,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927607484] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:56:37,162 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:56:37,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:56:37,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240511216] [2021-10-21 19:56:37,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 19:56:37,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:56:37,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 19:56:37,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:56:37,190 INFO L87 Difference]: Start difference. First operand has 99 states, 85 states have (on average 1.8705882352941177) internal successors, (159), 98 states have internal predecessors, (159), 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 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:56:37,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:56:37,221 INFO L93 Difference]: Finished difference Result 196 states and 316 transitions. [2021-10-21 19:56:37,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 19:56:37,222 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-21 19:56:37,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:56:37,233 INFO L225 Difference]: With dead ends: 196 [2021-10-21 19:56:37,233 INFO L226 Difference]: Without dead ends: 92 [2021-10-21 19:56:37,236 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:56:37,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-21 19:56:37,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-10-21 19:56:37,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 79 states have (on average 1.2911392405063291) internal successors, (102), 91 states have internal predecessors, (102), 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) [2021-10-21 19:56:37,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 102 transitions. [2021-10-21 19:56:37,282 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 102 transitions. Word has length 6 [2021-10-21 19:56:37,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:56:37,283 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 102 transitions. [2021-10-21 19:56:37,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:56:37,284 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 102 transitions. [2021-10-21 19:56:37,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-21 19:56:37,285 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:56:37,285 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:56:37,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:56:37,286 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 19:56:37,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:56:37,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1806865150, now seen corresponding path program 1 times [2021-10-21 19:56:37,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:56:37,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981857964] [2021-10-21 19:56:37,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:56:37,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:56:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:56:37,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:56:37,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:56:37,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981857964] [2021-10-21 19:56:37,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981857964] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:56:37,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:56:37,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:56:37,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543976923] [2021-10-21 19:56:37,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:56:37,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:56:37,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:56:37,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:56:37,371 INFO L87 Difference]: Start difference. First operand 92 states and 102 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2021-10-21 19:56:37,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:56:37,431 INFO L93 Difference]: Finished difference Result 182 states and 202 transitions. [2021-10-21 19:56:37,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:56:37,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 [2021-10-21 19:56:37,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:56:37,434 INFO L225 Difference]: With dead ends: 182 [2021-10-21 19:56:37,434 INFO L226 Difference]: Without dead ends: 98 [2021-10-21 19:56:37,435 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:56:37,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-21 19:56:37,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2021-10-21 19:56:37,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 81 states have (on average 1.2839506172839505) internal successors, (104), 93 states have internal predecessors, (104), 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) [2021-10-21 19:56:37,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2021-10-21 19:56:37,450 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 7 [2021-10-21 19:56:37,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:56:37,451 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2021-10-21 19:56:37,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2021-10-21 19:56:37,451 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2021-10-21 19:56:37,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 19:56:37,452 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:56:37,452 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:56:37,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:56:37,453 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 19:56:37,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:56:37,454 INFO L82 PathProgramCache]: Analyzing trace with hash 663763925, now seen corresponding path program 1 times [2021-10-21 19:56:37,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:56:37,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44666838] [2021-10-21 19:56:37,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:56:37,455 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:56:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:56:37,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:56:37,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:56:37,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44666838] [2021-10-21 19:56:37,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44666838] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:56:37,545 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:56:37,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:56:37,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876416387] [2021-10-21 19:56:37,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:56:37,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:56:37,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:56:37,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:56:37,548 INFO L87 Difference]: Start difference. First operand 94 states and 104 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-10-21 19:56:37,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:56:37,723 INFO L93 Difference]: Finished difference Result 251 states and 286 transitions. [2021-10-21 19:56:37,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:56:37,723 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 13 [2021-10-21 19:56:37,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:56:37,731 INFO L225 Difference]: With dead ends: 251 [2021-10-21 19:56:37,731 INFO L226 Difference]: Without dead ends: 245 [2021-10-21 19:56:37,733 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 38.6ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:56:37,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-10-21 19:56:37,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 96. [2021-10-21 19:56:37,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 84 states have (on average 1.2738095238095237) internal successors, (107), 95 states have internal predecessors, (107), 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) [2021-10-21 19:56:37,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 107 transitions. [2021-10-21 19:56:37,760 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 107 transitions. Word has length 13 [2021-10-21 19:56:37,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:56:37,760 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 107 transitions. [2021-10-21 19:56:37,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-10-21 19:56:37,762 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 107 transitions. [2021-10-21 19:56:37,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-21 19:56:37,764 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:56:37,764 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:56:37,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:56:37,765 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 19:56:37,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:56:37,766 INFO L82 PathProgramCache]: Analyzing trace with hash 2036062252, now seen corresponding path program 1 times [2021-10-21 19:56:37,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:56:37,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352697074] [2021-10-21 19:56:37,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:56:37,768 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:56:37,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:56:37,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 19:56:37,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:56:37,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352697074] [2021-10-21 19:56:37,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352697074] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:56:37,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:56:37,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:56:37,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047801988] [2021-10-21 19:56:37,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:56:37,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:56:37,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:56:37,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:56:37,984 INFO L87 Difference]: Start difference. First operand 96 states and 107 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 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) [2021-10-21 19:56:38,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:56:38,190 INFO L93 Difference]: Finished difference Result 125 states and 139 transitions. [2021-10-21 19:56:38,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:56:38,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 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) Word has length 20 [2021-10-21 19:56:38,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:56:38,192 INFO L225 Difference]: With dead ends: 125 [2021-10-21 19:56:38,192 INFO L226 Difference]: Without dead ends: 123 [2021-10-21 19:56:38,193 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.0ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:56:38,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-10-21 19:56:38,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 94. [2021-10-21 19:56:38,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 83 states have (on average 1.2650602409638554) internal successors, (105), 93 states have internal predecessors, (105), 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) [2021-10-21 19:56:38,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 105 transitions. [2021-10-21 19:56:38,209 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 105 transitions. Word has length 20 [2021-10-21 19:56:38,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:56:38,209 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 105 transitions. [2021-10-21 19:56:38,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 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) [2021-10-21 19:56:38,210 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 105 transitions. [2021-10-21 19:56:38,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-21 19:56:38,211 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:56:38,211 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:56:38,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 19:56:38,211 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 19:56:38,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:56:38,212 INFO L82 PathProgramCache]: Analyzing trace with hash 2014113239, now seen corresponding path program 1 times [2021-10-21 19:56:38,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:56:38,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216739943] [2021-10-21 19:56:38,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:56:38,213 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:56:38,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:56:38,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 19:56:38,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:56:38,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216739943] [2021-10-21 19:56:38,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216739943] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:56:38,360 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:56:38,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:56:38,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152425398] [2021-10-21 19:56:38,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:56:38,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:56:38,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:56:38,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:56:38,362 INFO L87 Difference]: Start difference. First operand 94 states and 105 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 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) [2021-10-21 19:56:38,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:56:38,491 INFO L93 Difference]: Finished difference Result 94 states and 105 transitions. [2021-10-21 19:56:38,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:56:38,491 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 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) Word has length 20 [2021-10-21 19:56:38,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:56:38,492 INFO L225 Difference]: With dead ends: 94 [2021-10-21 19:56:38,493 INFO L226 Difference]: Without dead ends: 92 [2021-10-21 19:56:38,493 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.6ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:56:38,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-21 19:56:38,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-10-21 19:56:38,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 82 states have (on average 1.2560975609756098) internal successors, (103), 91 states have internal predecessors, (103), 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) [2021-10-21 19:56:38,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2021-10-21 19:56:38,501 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 103 transitions. Word has length 20 [2021-10-21 19:56:38,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:56:38,501 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 103 transitions. [2021-10-21 19:56:38,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 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) [2021-10-21 19:56:38,502 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 103 transitions. [2021-10-21 19:56:38,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-21 19:56:38,503 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:56:38,503 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:56:38,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 19:56:38,504 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 19:56:38,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:56:38,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1486605840, now seen corresponding path program 1 times [2021-10-21 19:56:38,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:56:38,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165166113] [2021-10-21 19:56:38,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:56:38,505 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:56:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:56:38,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:56:38,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:56:38,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165166113] [2021-10-21 19:56:38,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165166113] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:56:38,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:56:38,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:56:38,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787611760] [2021-10-21 19:56:38,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:56:38,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:56:38,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:56:38,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:56:38,592 INFO L87 Difference]: Start difference. First operand 92 states and 103 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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) [2021-10-21 19:56:38,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:56:38,836 INFO L93 Difference]: Finished difference Result 210 states and 230 transitions. [2021-10-21 19:56:38,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:56:38,837 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 23 [2021-10-21 19:56:38,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:56:38,839 INFO L225 Difference]: With dead ends: 210 [2021-10-21 19:56:38,839 INFO L226 Difference]: Without dead ends: 208 [2021-10-21 19:56:38,840 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 45.0ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:56:38,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-10-21 19:56:38,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 98. [2021-10-21 19:56:38,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 88 states have (on average 1.2386363636363635) internal successors, (109), 97 states have internal predecessors, (109), 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) [2021-10-21 19:56:38,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2021-10-21 19:56:38,848 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 23 [2021-10-21 19:56:38,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:56:38,849 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2021-10-21 19:56:38,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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) [2021-10-21 19:56:38,849 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2021-10-21 19:56:38,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-21 19:56:38,850 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:56:38,850 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:56:38,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 19:56:38,851 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 19:56:38,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:56:38,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1760261746, now seen corresponding path program 1 times [2021-10-21 19:56:38,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:56:38,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624189553] [2021-10-21 19:56:38,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:56:38,853 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:56:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:56:38,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:56:38,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:56:38,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624189553] [2021-10-21 19:56:38,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624189553] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:56:38,920 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:56:38,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:56:38,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611367912] [2021-10-21 19:56:38,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:56:38,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:56:38,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:56:38,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:56:38,923 INFO L87 Difference]: Start difference. First operand 98 states and 109 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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) [2021-10-21 19:56:39,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:56:39,174 INFO L93 Difference]: Finished difference Result 208 states and 228 transitions. [2021-10-21 19:56:39,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:56:39,175 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 23 [2021-10-21 19:56:39,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:56:39,176 INFO L225 Difference]: With dead ends: 208 [2021-10-21 19:56:39,176 INFO L226 Difference]: Without dead ends: 206 [2021-10-21 19:56:39,177 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 44.1ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:56:39,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-10-21 19:56:39,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 104. [2021-10-21 19:56:39,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 94 states have (on average 1.2234042553191489) internal successors, (115), 103 states have internal predecessors, (115), 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) [2021-10-21 19:56:39,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 115 transitions. [2021-10-21 19:56:39,186 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 115 transitions. Word has length 23 [2021-10-21 19:56:39,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:56:39,186 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 115 transitions. [2021-10-21 19:56:39,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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) [2021-10-21 19:56:39,187 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 115 transitions. [2021-10-21 19:56:39,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-21 19:56:39,188 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:56:39,188 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:56:39,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-21 19:56:39,189 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-21 19:56:39,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:56:39,190 INFO L82 PathProgramCache]: Analyzing trace with hash -2060804288, now seen corresponding path program 1 times [2021-10-21 19:56:39,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:56:39,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922872860] [2021-10-21 19:56:39,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:56:39,191 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:56:39,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:56:39,215 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:56:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:56:39,281 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:56:39,282 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 19:56:39,283 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:56:39,285 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:56:39,285 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:56:39,286 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:56:39,286 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:56:39,286 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:56:39,287 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:56:39,287 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:56:39,287 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:56:39,288 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:56:39,288 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:56:39,288 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:56:39,289 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:56:39,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-21 19:56:39,297 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:56:39,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:56:39 BoogieIcfgContainer [2021-10-21 19:56:39,355 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:56:39,355 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:56:39,356 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:56:39,356 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:56:39,356 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:56:36" (3/4) ... [2021-10-21 19:56:39,359 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-21 19:56:39,426 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495f3650-525a-41d0-9717-2d4d7de157ef/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:56:39,431 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:56:39,433 INFO L168 Benchmark]: Toolchain (without parser) took 4174.53 ms. Allocated memory was 79.7 MB in the beginning and 136.3 MB in the end (delta: 56.6 MB). Free memory was 39.6 MB in the beginning and 80.2 MB in the end (delta: -40.6 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. [2021-10-21 19:56:39,433 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 79.7 MB. Free memory was 57.1 MB in the beginning and 57.1 MB in the end (delta: 44.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:56:39,436 INFO L168 Benchmark]: CACSL2BoogieTranslator took 625.72 ms. Allocated memory is still 109.1 MB. Free memory was 87.6 MB in the beginning and 76.1 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:56:39,437 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.44 ms. Allocated memory is still 109.1 MB. Free memory was 76.1 MB in the beginning and 73.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:56:39,437 INFO L168 Benchmark]: Boogie Preprocessor took 68.55 ms. Allocated memory is still 109.1 MB. Free memory was 73.5 MB in the beginning and 70.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:56:39,438 INFO L168 Benchmark]: RCFGBuilder took 812.66 ms. Allocated memory is still 109.1 MB. Free memory was 70.7 MB in the beginning and 45.9 MB in the end (delta: 24.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:56:39,438 INFO L168 Benchmark]: TraceAbstraction took 2490.05 ms. Allocated memory was 109.1 MB in the beginning and 136.3 MB in the end (delta: 27.3 MB). Free memory was 45.3 MB in the beginning and 82.3 MB in the end (delta: -37.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:56:39,439 INFO L168 Benchmark]: Witness Printer took 75.64 ms. Allocated memory is still 136.3 MB. Free memory was 82.3 MB in the beginning and 80.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:56:39,442 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 79.7 MB. Free memory was 57.1 MB in the beginning and 57.1 MB in the end (delta: 44.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 625.72 ms. Allocated memory is still 109.1 MB. Free memory was 87.6 MB in the beginning and 76.1 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 76.44 ms. Allocated memory is still 109.1 MB. Free memory was 76.1 MB in the beginning and 73.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.55 ms. Allocated memory is still 109.1 MB. Free memory was 73.5 MB in the beginning and 70.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 812.66 ms. Allocated memory is still 109.1 MB. Free memory was 70.7 MB in the beginning and 45.9 MB in the end (delta: 24.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2490.05 ms. Allocated memory was 109.1 MB in the beginning and 136.3 MB in the end (delta: 27.3 MB). Free memory was 45.3 MB in the beginning and 82.3 MB in the end (delta: -37.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 75.64 ms. Allocated memory is still 136.3 MB. Free memory was 82.3 MB in the beginning and 80.2 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: 565]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L638] struct list *data = ((void *)0); [L639] COND TRUE __VERIFIER_nondet_int() [L640] struct node *node = malloc(sizeof *node); [L641] COND FALSE !(!node) [L643] node->next = node [L644] node->value = __VERIFIER_nondet_int() [L645] struct list *item = malloc(sizeof *item); [L646] COND FALSE !(!item) [L648] item->slist = node [L649] item->next = data [L650] data = item [L639] COND FALSE !(__VERIFIER_nondet_int()) [L652] COND FALSE !(!data) [L615] COND FALSE !(!(shape)) [L616] shape->next [L616] COND FALSE !(shape->next) [L622] COND FALSE !(!(shape)) [L623] EXPR shape->next [L623] COND FALSE !(!(shape->next == ((void *)0))) [L624] EXPR shape->slist [L624] COND FALSE !(!(shape->slist)) [L625] EXPR shape->slist [L625] EXPR shape->slist->next [L625] COND TRUE !(shape->slist->next == ((void *)0)) [L565] reach_error() - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 99 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 2368.1ms, OverallIterations: 8, TraceHistogramMax: 2, EmptinessCheckTime: 16.7ms, AutomataDifference: 1166.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 606 SDtfs, 1417 SDslu, 975 SDs, 0 SdLazy, 496 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 636.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 208.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=7, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 109.5ms AutomataMinimizationTime, 7 MinimizatonAttempts, 394 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 38.0ms SsaConstructionTime, 185.5ms SatisfiabilityAnalysisTime, 504.2ms InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 512 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 10/10 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! [2021-10-21 19:56:39,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495f3650-525a-41d0-9717-2d4d7de157ef/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...