./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex11C.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a853215-0c3c-45e9-aa5c-410d14f99808/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a853215-0c3c-45e9-aa5c-410d14f99808/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a853215-0c3c-45e9-aa5c-410d14f99808/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a853215-0c3c-45e9-aa5c-410d14f99808/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex11C.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a853215-0c3c-45e9-aa5c-410d14f99808/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a853215-0c3c-45e9-aa5c-410d14f99808/bin/uautomizer-QkZJyEgLgS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a21396952d3c1812f4afc7acd202b7f8106d7865729c99629f4c895e2f73a4f9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 02:29:25,900 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:29:25,903 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:29:25,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:29:25,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:29:25,967 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:29:25,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:29:25,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:29:25,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:29:25,976 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:29:25,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:29:25,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:29:25,979 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:29:25,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:29:25,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:29:25,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:29:25,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:29:25,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:29:25,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:29:25,992 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:29:25,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:29:25,997 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:29:26,000 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:29:26,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:29:26,011 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:29:26,016 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:29:26,016 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:29:26,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:29:26,018 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:29:26,020 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:29:26,020 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:29:26,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:29:26,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:29:26,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:29:26,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:29:26,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:29:26,027 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:29:26,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:29:26,028 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:29:26,029 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:29:26,030 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:29:26,031 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a853215-0c3c-45e9-aa5c-410d14f99808/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-11-23 02:29:26,059 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:29:26,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:29:26,060 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:29:26,061 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:29:26,062 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:29:26,062 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:29:26,063 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:29:26,063 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:29:26,063 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:29:26,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:29:26,064 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 02:29:26,064 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:29:26,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:29:26,065 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 02:29:26,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:29:26,066 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 02:29:26,066 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 02:29:26,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 02:29:26,066 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:29:26,067 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 02:29:26,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:29:26,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:29:26,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:29:26,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:29:26,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:29:26,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:29:26,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 02:29:26,069 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 02:29:26,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 02:29:26,070 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:29:26,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 02:29:26,070 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:29:26,071 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:29:26,071 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_5a853215-0c3c-45e9-aa5c-410d14f99808/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a853215-0c3c-45e9-aa5c-410d14f99808/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a21396952d3c1812f4afc7acd202b7f8106d7865729c99629f4c895e2f73a4f9 [2022-11-23 02:29:26,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:29:26,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:29:26,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:29:26,501 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:29:26,501 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:29:26,503 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a853215-0c3c-45e9-aa5c-410d14f99808/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex11C.i [2022-11-23 02:29:30,288 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:29:30,616 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:29:30,617 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a853215-0c3c-45e9-aa5c-410d14f99808/sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex11C.i [2022-11-23 02:29:30,625 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a853215-0c3c-45e9-aa5c-410d14f99808/bin/uautomizer-QkZJyEgLgS/data/91266ee31/188f03829b4348219093e254da45c806/FLAG60d5bc036 [2022-11-23 02:29:30,649 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a853215-0c3c-45e9-aa5c-410d14f99808/bin/uautomizer-QkZJyEgLgS/data/91266ee31/188f03829b4348219093e254da45c806 [2022-11-23 02:29:30,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:29:30,661 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:29:30,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:29:30,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:29:30,670 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:29:30,671 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:29:30" (1/1) ... [2022-11-23 02:29:30,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31147d19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:30, skipping insertion in model container [2022-11-23 02:29:30,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:29:30" (1/1) ... [2022-11-23 02:29:30,683 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:29:30,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:29:30,921 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:29:30,933 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:29:30,953 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:29:30,979 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:29:30,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:30 WrapperNode [2022-11-23 02:29:30,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:29:30,981 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:29:30,981 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:29:30,982 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:29:30,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:30" (1/1) ... [2022-11-23 02:29:31,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:30" (1/1) ... [2022-11-23 02:29:31,026 INFO L138 Inliner]: procedures = 11, calls = 20, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 39 [2022-11-23 02:29:31,026 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:29:31,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:29:31,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:29:31,027 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:29:31,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:30" (1/1) ... [2022-11-23 02:29:31,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:30" (1/1) ... [2022-11-23 02:29:31,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:30" (1/1) ... [2022-11-23 02:29:31,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:30" (1/1) ... [2022-11-23 02:29:31,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:30" (1/1) ... [2022-11-23 02:29:31,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:30" (1/1) ... [2022-11-23 02:29:31,066 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:30" (1/1) ... [2022-11-23 02:29:31,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:30" (1/1) ... [2022-11-23 02:29:31,069 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:29:31,070 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:29:31,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:29:31,070 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:29:31,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:30" (1/1) ... [2022-11-23 02:29:31,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:29:31,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a853215-0c3c-45e9-aa5c-410d14f99808/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:29:31,117 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a853215-0c3c-45e9-aa5c-410d14f99808/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:29:31,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a853215-0c3c-45e9-aa5c-410d14f99808/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:29:31,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 02:29:31,179 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2022-11-23 02:29:31,180 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2022-11-23 02:29:31,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 02:29:31,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:29:31,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:29:31,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 02:29:31,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 02:29:31,289 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:29:31,291 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:29:31,498 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:29:31,510 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:29:31,511 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 02:29:31,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:29:31 BoogieIcfgContainer [2022-11-23 02:29:31,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:29:31,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:29:31,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:29:31,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:29:31,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:29:30" (1/3) ... [2022-11-23 02:29:31,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3192c0d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:29:31, skipping insertion in model container [2022-11-23 02:29:31,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:30" (2/3) ... [2022-11-23 02:29:31,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3192c0d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:29:31, skipping insertion in model container [2022-11-23 02:29:31,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:29:31" (3/3) ... [2022-11-23 02:29:31,524 INFO L112 eAbstractionObserver]: Analyzing ICFG rec_malloc_ex11C.i [2022-11-23 02:29:31,546 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:29:31,546 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-23 02:29:31,619 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:29:31,628 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@54d486e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:29:31,628 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-23 02:29:31,639 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 21 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 02:29:31,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 02:29:31,652 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:29:31,653 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:29:31,653 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 02:29:31,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:29:31,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1383666455, now seen corresponding path program 1 times [2022-11-23 02:29:31,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:29:31,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125751966] [2022-11-23 02:29:31,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:29:31,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:29:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:29:32,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:29:32,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:29:32,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125751966] [2022-11-23 02:29:32,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125751966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:29:32,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:29:32,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:29:32,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900380576] [2022-11-23 02:29:32,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:29:32,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:29:32,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:29:32,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:29:32,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:29:32,266 INFO L87 Difference]: Start difference. First operand has 25 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 21 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:29:32,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:29:32,407 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2022-11-23 02:29:32,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:29:32,411 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-23 02:29:32,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:29:32,420 INFO L225 Difference]: With dead ends: 29 [2022-11-23 02:29:32,426 INFO L226 Difference]: Without dead ends: 20 [2022-11-23 02:29:32,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:29:32,437 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 2 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:29:32,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 59 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:29:32,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-23 02:29:32,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-23 02:29:32,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 02:29:32,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2022-11-23 02:29:32,485 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 9 [2022-11-23 02:29:32,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:29:32,485 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2022-11-23 02:29:32,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:29:32,486 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2022-11-23 02:29:32,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-23 02:29:32,488 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:29:32,488 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:29:32,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 02:29:32,489 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 02:29:32,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:29:32,490 INFO L85 PathProgramCache]: Analyzing trace with hash 56012893, now seen corresponding path program 1 times [2022-11-23 02:29:32,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:29:32,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878403824] [2022-11-23 02:29:32,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:29:32,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:29:32,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:29:32,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:29:32,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:29:32,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878403824] [2022-11-23 02:29:32,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878403824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:29:32,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:29:32,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 02:29:32,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386029860] [2022-11-23 02:29:32,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:29:32,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:29:32,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:29:32,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:29:32,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:29:32,988 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:29:33,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:29:33,262 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2022-11-23 02:29:33,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:29:33,264 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-23 02:29:33,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:29:33,267 INFO L225 Difference]: With dead ends: 35 [2022-11-23 02:29:33,271 INFO L226 Difference]: Without dead ends: 34 [2022-11-23 02:29:33,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:29:33,278 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 10 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 02:29:33,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 56 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 02:29:33,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-23 02:29:33,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 26. [2022-11-23 02:29:33,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.263157894736842) internal successors, (24), 21 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 02:29:33,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-11-23 02:29:33,303 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 10 [2022-11-23 02:29:33,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:29:33,304 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-11-23 02:29:33,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:29:33,307 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-11-23 02:29:33,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-23 02:29:33,310 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:29:33,311 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:29:33,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 02:29:33,313 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 02:29:33,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:29:33,318 INFO L85 PathProgramCache]: Analyzing trace with hash -2006920769, now seen corresponding path program 1 times [2022-11-23 02:29:33,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:29:33,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835067565] [2022-11-23 02:29:33,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:29:33,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:29:33,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:29:33,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-23 02:29:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:29:33,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:29:33,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:29:33,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835067565] [2022-11-23 02:29:33,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835067565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:29:33,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:29:33,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 02:29:33,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401994366] [2022-11-23 02:29:33,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:29:33,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:29:33,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:29:33,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:29:33,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:29:33,838 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 02:29:33,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:29:33,966 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2022-11-23 02:29:33,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:29:33,967 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-23 02:29:33,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:29:33,969 INFO L225 Difference]: With dead ends: 52 [2022-11-23 02:29:33,969 INFO L226 Difference]: Without dead ends: 26 [2022-11-23 02:29:33,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:29:33,978 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:29:33,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 69 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:29:33,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-23 02:29:33,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-23 02:29:33,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 02:29:33,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2022-11-23 02:29:33,985 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 12 [2022-11-23 02:29:33,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:29:33,986 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2022-11-23 02:29:33,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 02:29:33,986 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2022-11-23 02:29:33,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-23 02:29:33,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:29:33,993 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:29:33,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 02:29:33,993 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 02:29:33,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:29:33,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1709384494, now seen corresponding path program 1 times [2022-11-23 02:29:33,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:29:33,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145786554] [2022-11-23 02:29:33,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:29:33,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:29:34,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:29:34,299 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:29:34,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:29:34,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145786554] [2022-11-23 02:29:34,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145786554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:29:34,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:29:34,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 02:29:34,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554805933] [2022-11-23 02:29:34,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:29:34,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:29:34,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:29:34,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:29:34,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:29:34,306 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:29:34,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:29:34,444 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2022-11-23 02:29:34,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:29:34,445 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-23 02:29:34,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:29:34,450 INFO L225 Difference]: With dead ends: 30 [2022-11-23 02:29:34,450 INFO L226 Difference]: Without dead ends: 29 [2022-11-23 02:29:34,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:29:34,462 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 7 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:29:34,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 63 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:29:34,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-23 02:29:34,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 23. [2022-11-23 02:29:34,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 02:29:34,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2022-11-23 02:29:34,471 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15 [2022-11-23 02:29:34,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:29:34,471 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2022-11-23 02:29:34,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:29:34,472 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-11-23 02:29:34,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-23 02:29:34,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:29:34,473 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:29:34,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 02:29:34,474 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 02:29:34,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:29:34,475 INFO L85 PathProgramCache]: Analyzing trace with hash 138034301, now seen corresponding path program 1 times [2022-11-23 02:29:34,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:29:34,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570085860] [2022-11-23 02:29:34,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:29:34,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:29:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:29:34,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-23 02:29:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:29:34,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 02:29:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:29:34,864 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 02:29:34,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:29:34,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570085860] [2022-11-23 02:29:34,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570085860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:29:34,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:29:34,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 02:29:34,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831329114] [2022-11-23 02:29:34,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:29:34,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:29:34,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:29:34,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:29:34,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:29:34,870 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 02:29:35,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:29:35,005 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2022-11-23 02:29:35,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 02:29:35,006 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-11-23 02:29:35,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:29:35,010 INFO L225 Difference]: With dead ends: 31 [2022-11-23 02:29:35,011 INFO L226 Difference]: Without dead ends: 30 [2022-11-23 02:29:35,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:29:35,012 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:29:35,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 53 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:29:35,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-23 02:29:35,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2022-11-23 02:29:35,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-23 02:29:35,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2022-11-23 02:29:35,040 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 20 [2022-11-23 02:29:35,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:29:35,042 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2022-11-23 02:29:35,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 02:29:35,043 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2022-11-23 02:29:35,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-23 02:29:35,050 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:29:35,050 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:29:35,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 02:29:35,051 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 02:29:35,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:29:35,052 INFO L85 PathProgramCache]: Analyzing trace with hash -15903900, now seen corresponding path program 1 times [2022-11-23 02:29:35,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:29:35,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828084142] [2022-11-23 02:29:35,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:29:35,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:29:35,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:29:35,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-23 02:29:35,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:29:35,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 02:29:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:29:35,967 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 02:29:35,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:29:35,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828084142] [2022-11-23 02:29:35,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828084142] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:29:35,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947319895] [2022-11-23 02:29:35,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:29:35,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:29:35,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a853215-0c3c-45e9-aa5c-410d14f99808/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:29:35,974 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a853215-0c3c-45e9-aa5c-410d14f99808/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:29:35,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a853215-0c3c-45e9-aa5c-410d14f99808/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 02:29:36,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:29:36,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-23 02:29:36,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:29:36,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-23 02:29:36,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 02:29:36,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:29:36,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-23 02:29:36,257 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-23 02:29:36,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-23 02:29:36,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-23 02:29:36,453 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-23 02:29:36,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 31 [2022-11-23 02:29:36,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-11-23 02:29:36,796 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:29:36,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:29:37,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-23 02:29:37,914 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:29:37,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947319895] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:29:37,915 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:29:37,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 30 [2022-11-23 02:29:37,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428380200] [2022-11-23 02:29:37,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:29:37,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-23 02:29:37,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:29:37,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-23 02:29:37,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=828, Unknown=0, NotChecked=0, Total=930 [2022-11-23 02:29:37,918 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 31 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 27 states have internal predecessors, (42), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-23 02:29:38,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:29:38,771 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2022-11-23 02:29:38,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-23 02:29:38,772 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 27 states have internal predecessors, (42), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 21 [2022-11-23 02:29:38,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:29:38,773 INFO L225 Difference]: With dead ends: 35 [2022-11-23 02:29:38,774 INFO L226 Difference]: Without dead ends: 34 [2022-11-23 02:29:38,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=187, Invalid=1535, Unknown=0, NotChecked=0, Total=1722 [2022-11-23 02:29:38,776 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 36 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 34 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 02:29:38,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 64 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 362 Invalid, 1 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 02:29:38,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-23 02:29:38,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2022-11-23 02:29:38,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-23 02:29:38,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2022-11-23 02:29:38,788 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 21 [2022-11-23 02:29:38,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:29:38,792 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2022-11-23 02:29:38,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 27 states have internal predecessors, (42), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-23 02:29:38,793 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2022-11-23 02:29:38,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-23 02:29:38,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:29:38,796 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-23 02:29:38,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a853215-0c3c-45e9-aa5c-410d14f99808/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 02:29:39,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a853215-0c3c-45e9-aa5c-410d14f99808/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:29:39,004 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 02:29:39,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:29:39,005 INFO L85 PathProgramCache]: Analyzing trace with hash 2020673055, now seen corresponding path program 1 times [2022-11-23 02:29:39,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:29:39,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751954445] [2022-11-23 02:29:39,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:29:39,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:29:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:29:39,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-23 02:29:39,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:29:39,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 02:29:39,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:29:39,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-23 02:29:39,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:29:39,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 02:29:39,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:29:39,598 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-23 02:29:39,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:29:39,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751954445] [2022-11-23 02:29:39,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751954445] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:29:39,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908678193] [2022-11-23 02:29:39,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:29:39,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:29:39,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a853215-0c3c-45e9-aa5c-410d14f99808/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:29:39,602 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a853215-0c3c-45e9-aa5c-410d14f99808/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:29:39,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a853215-0c3c-45e9-aa5c-410d14f99808/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 02:29:39,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:29:39,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-23 02:29:39,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:29:39,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 02:29:39,838 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-23 02:29:39,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2022-11-23 02:29:40,008 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 02:29:40,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 23 [2022-11-23 02:29:40,044 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-23 02:29:40,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:29:40,383 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-23 02:29:40,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908678193] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:29:40,384 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:29:40,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 8] total 17 [2022-11-23 02:29:40,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582091482] [2022-11-23 02:29:40,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:29:40,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-23 02:29:40,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:29:40,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-23 02:29:40,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-11-23 02:29:40,387 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 18 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 6 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2022-11-23 02:29:40,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:29:40,885 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2022-11-23 02:29:40,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 02:29:40,886 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 6 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) Word has length 39 [2022-11-23 02:29:40,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:29:40,887 INFO L225 Difference]: With dead ends: 28 [2022-11-23 02:29:40,887 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 02:29:40,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2022-11-23 02:29:40,889 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 21 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 02:29:40,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 90 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 186 Invalid, 1 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 02:29:40,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 02:29:40,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 02:29:40,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:29:40,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 02:29:40,890 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2022-11-23 02:29:40,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:29:40,891 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 02:29:40,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 6 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2022-11-23 02:29:40,895 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 02:29:40,895 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 02:29:40,899 INFO L805 garLoopResultBuilder]: Registering result SAFE for location recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-11-23 02:29:40,900 INFO L805 garLoopResultBuilder]: Registering result SAFE for location recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-11-23 02:29:40,900 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-11-23 02:29:40,901 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-11-23 02:29:40,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a853215-0c3c-45e9-aa5c-410d14f99808/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-23 02:29:41,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a853215-0c3c-45e9-aa5c-410d14f99808/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-23 02:29:41,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-23 02:29:41,333 INFO L899 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2022-11-23 02:29:41,333 INFO L899 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2022-11-23 02:29:41,333 INFO L899 garLoopResultBuilder]: For program point L16-1(line 16) no Hoare annotation was computed. [2022-11-23 02:29:41,334 INFO L895 garLoopResultBuilder]: At program point recENTRY(lines 8 25) the Hoare annotation is: (or (not (<= (select (select |old(#memory_int)| |rec_#in~op.base|) |rec_#in~op.offset|) 2147483647)) (and (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|))) [2022-11-23 02:29:41,334 INFO L899 garLoopResultBuilder]: For program point recFINAL(lines 8 25) no Hoare annotation was computed. [2022-11-23 02:29:41,334 INFO L899 garLoopResultBuilder]: For program point L9(lines 9 13) no Hoare annotation was computed. [2022-11-23 02:29:41,334 INFO L899 garLoopResultBuilder]: For program point recEXIT(lines 8 25) no Hoare annotation was computed. [2022-11-23 02:29:41,335 INFO L899 garLoopResultBuilder]: For program point recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 16) no Hoare annotation was computed. [2022-11-23 02:29:41,335 INFO L899 garLoopResultBuilder]: For program point recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 16) no Hoare annotation was computed. [2022-11-23 02:29:41,335 INFO L895 garLoopResultBuilder]: At program point L18(line 18) the Hoare annotation is: (let ((.cse1 (select (select |old(#memory_int)| |rec_#in~op.base|) |rec_#in~op.offset|))) (or (let ((.cse0 (select (select |#memory_int| rec_~ip~0.base) rec_~ip~0.offset))) (and (<= 0 (+ .cse0 1)) (<= 0 .cse1) (<= .cse0 2147483647) (= rec_~ip~0.offset 0) (<= 0 (+ (select (select |#memory_int| |rec_#in~op.base|) |rec_#in~op.offset|) 1)))) (not (<= .cse1 2147483647)))) [2022-11-23 02:29:41,335 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 39) no Hoare annotation was computed. [2022-11-23 02:29:41,335 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-23 02:29:41,336 INFO L899 garLoopResultBuilder]: For program point L31-1(lines 31 40) no Hoare annotation was computed. [2022-11-23 02:29:41,339 INFO L895 garLoopResultBuilder]: At program point L31-3(lines 31 40) the Hoare annotation is: (let ((.cse2 (select (select |#memory_int| |ULTIMATE.start_main_~qq~0#1.base|) |ULTIMATE.start_main_~qq~0#1.offset|))) (let ((.cse0 (<= .cse2 2147483647)) (.cse1 (= |ULTIMATE.start_main_~qq~0#1.offset| 0))) (or (and (= (select |#valid| |ULTIMATE.start_main_~qq~0#1.base|) 1) .cse0 .cse1) (and .cse0 .cse1 (or (< (select (select |#memory_int| |ULTIMATE.start_main_~pp~0#1.base|) |ULTIMATE.start_main_~pp~0#1.offset|) 0) (< 0 (+ .cse2 2147483648))) (or (forall ((v_ArrVal_179 Int) (|v_ULTIMATE.start_main_~pp~0#1.base_9| Int)) (or (< 0 (+ (select (select (store |#memory_int| |v_ULTIMATE.start_main_~pp~0#1.base_9| (store (select |#memory_int| |v_ULTIMATE.start_main_~pp~0#1.base_9|) 0 v_ArrVal_179)) |ULTIMATE.start_main_~qq~0#1.base|) |ULTIMATE.start_main_~qq~0#1.offset|) 2147483648)) (< v_ArrVal_179 0))) (not (< 1 |ULTIMATE.start_main_#t~mem8#1|))))))) [2022-11-23 02:29:41,339 INFO L899 garLoopResultBuilder]: For program point L31-4(lines 31 40) no Hoare annotation was computed. [2022-11-23 02:29:41,339 INFO L902 garLoopResultBuilder]: At program point L27(lines 27 44) the Hoare annotation is: true [2022-11-23 02:29:41,339 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-23 02:29:41,340 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 39) no Hoare annotation was computed. [2022-11-23 02:29:41,340 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-23 02:29:41,340 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-23 02:29:41,341 INFO L895 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (let ((.cse3 (select |#memory_int| |ULTIMATE.start_main_~pp~0#1.base|))) (let ((.cse0 (select (select |#memory_int| |ULTIMATE.start_main_~qq~0#1.base|) |ULTIMATE.start_main_~qq~0#1.offset|)) (.cse1 (select .cse3 |ULTIMATE.start_main_~pp~0#1.offset|))) (and (or (<= 2 .cse0) (= |ULTIMATE.start_main_~qq~0#1.base| |ULTIMATE.start_main_~pp~0#1.base|)) (<= .cse1 2147483647) (<= .cse0 2147483647) (or (exists ((|ULTIMATE.start_main_~qq~0#1.base| Int)) (let ((.cse2 (select (select |#memory_int| |ULTIMATE.start_main_~qq~0#1.base|) 0))) (and (<= .cse2 |ULTIMATE.start_main_#t~mem13#1|) (<= 2 .cse2)))) (<= (select .cse3 0) |ULTIMATE.start_main_#t~mem13#1|)) (= |ULTIMATE.start_main_~qq~0#1.offset| 0) (<= |ULTIMATE.start_main_#t~mem13#1| 2147483647) (<= 0 .cse1) (= |ULTIMATE.start_main_~pp~0#1.offset| 0)))) [2022-11-23 02:29:41,341 INFO L899 garLoopResultBuilder]: For program point L39-1(line 39) no Hoare annotation was computed. [2022-11-23 02:29:41,341 INFO L899 garLoopResultBuilder]: For program point L39-2(line 39) no Hoare annotation was computed. [2022-11-23 02:29:41,341 INFO L899 garLoopResultBuilder]: For program point L39-3(line 39) no Hoare annotation was computed. [2022-11-23 02:29:41,342 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 37) no Hoare annotation was computed. [2022-11-23 02:29:41,347 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:29:41,350 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 02:29:41,366 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~pp~0#1.base_9,QUANTIFIED] [2022-11-23 02:29:41,368 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_179,QUANTIFIED] [2022-11-23 02:29:41,368 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~pp~0#1.base_9,QUANTIFIED] [2022-11-23 02:29:41,369 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_179,QUANTIFIED] [2022-11-23 02:29:41,376 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~pp~0#1.base_9,QUANTIFIED] [2022-11-23 02:29:41,376 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_179,QUANTIFIED] [2022-11-23 02:29:41,377 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~pp~0#1.base_9,QUANTIFIED] [2022-11-23 02:29:41,377 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_179,QUANTIFIED] [2022-11-23 02:29:41,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:29:41 BoogieIcfgContainer [2022-11-23 02:29:41,379 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 02:29:41,380 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 02:29:41,380 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 02:29:41,381 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 02:29:41,381 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:29:31" (3/4) ... [2022-11-23 02:29:41,385 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 02:29:41,393 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure rec [2022-11-23 02:29:41,398 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2022-11-23 02:29:41,399 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-23 02:29:41,399 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 02:29:41,400 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 02:29:41,442 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a853215-0c3c-45e9-aa5c-410d14f99808/bin/uautomizer-QkZJyEgLgS/witness.graphml [2022-11-23 02:29:41,442 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 02:29:41,443 INFO L158 Benchmark]: Toolchain (without parser) took 10781.87ms. Allocated memory was 163.6MB in the beginning and 237.0MB in the end (delta: 73.4MB). Free memory was 132.1MB in the beginning and 185.4MB in the end (delta: -53.3MB). Peak memory consumption was 23.2MB. Max. memory is 16.1GB. [2022-11-23 02:29:41,443 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 163.6MB. Free memory is still 106.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 02:29:41,444 INFO L158 Benchmark]: CACSL2BoogieTranslator took 317.77ms. Allocated memory is still 163.6MB. Free memory was 132.1MB in the beginning and 122.1MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 02:29:41,444 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.03ms. Allocated memory is still 163.6MB. Free memory was 122.1MB in the beginning and 120.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 02:29:41,445 INFO L158 Benchmark]: Boogie Preprocessor took 42.14ms. Allocated memory is still 163.6MB. Free memory was 120.8MB in the beginning and 119.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 02:29:41,445 INFO L158 Benchmark]: RCFGBuilder took 443.70ms. Allocated memory is still 163.6MB. Free memory was 119.5MB in the beginning and 107.3MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-23 02:29:41,445 INFO L158 Benchmark]: TraceAbstraction took 9863.28ms. Allocated memory was 163.6MB in the beginning and 237.0MB in the end (delta: 73.4MB). Free memory was 106.9MB in the beginning and 188.6MB in the end (delta: -81.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 02:29:41,446 INFO L158 Benchmark]: Witness Printer took 62.06ms. Allocated memory is still 237.0MB. Free memory was 188.6MB in the beginning and 185.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 02:29:41,448 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 163.6MB. Free memory is still 106.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 317.77ms. Allocated memory is still 163.6MB. Free memory was 132.1MB in the beginning and 122.1MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.03ms. Allocated memory is still 163.6MB. Free memory was 122.1MB in the beginning and 120.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.14ms. Allocated memory is still 163.6MB. Free memory was 120.8MB in the beginning and 119.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 443.70ms. Allocated memory is still 163.6MB. Free memory was 119.5MB in the beginning and 107.3MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 9863.28ms. Allocated memory was 163.6MB in the beginning and 237.0MB in the end (delta: 73.4MB). Free memory was 106.9MB in the beginning and 188.6MB in the end (delta: -81.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 62.06ms. Allocated memory is still 237.0MB. Free memory was 188.6MB in the beginning and 185.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~pp~0#1.base_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_179,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~pp~0#1.base_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_179,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~pp~0#1.base_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_179,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~pp~0#1.base_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_179,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 16]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 39]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 39]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 9.7s, OverallIterations: 7, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 83 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 83 mSDsluCounter, 454 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 349 mSDsCounter, 56 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 830 IncrementalHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 56 mSolverCounterUnsat, 105 mSDtfsCounter, 830 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 201 GetRequests, 107 SyntacticMatches, 3 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=5, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 21 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 13 PreInvPairs, 18 NumberOfFragments, 203 HoareAnnotationTreeSize, 13 FomulaSimplifications, 109 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 139 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 186 NumberOfCodeBlocks, 186 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 235 ConstructedInterpolants, 6 QuantifiedInterpolants, 1376 SizeOfPredicates, 23 NumberOfNonLiveVariables, 375 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 105/122 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 31]: Loop Invariant [2022-11-23 02:29:41,459 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~pp~0#1.base_9,QUANTIFIED] [2022-11-23 02:29:41,460 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_179,QUANTIFIED] [2022-11-23 02:29:41,460 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~pp~0#1.base_9,QUANTIFIED] [2022-11-23 02:29:41,460 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_179,QUANTIFIED] [2022-11-23 02:29:41,461 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~pp~0#1.base_9,QUANTIFIED] [2022-11-23 02:29:41,462 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_179,QUANTIFIED] [2022-11-23 02:29:41,462 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~pp~0#1.base_9,QUANTIFIED] [2022-11-23 02:29:41,462 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_179,QUANTIFIED] Derived loop invariant: ((\valid[qq] == 1 && unknown-#memory_int-unknown[qq][qq] <= 2147483647) && qq == 0) || (((unknown-#memory_int-unknown[qq][qq] <= 2147483647 && qq == 0) && (unknown-#memory_int-unknown[pp][pp] < 0 || 0 < unknown-#memory_int-unknown[qq][qq] + 2147483648)) && ((forall v_ArrVal_179 : int, v_ULTIMATE.start_main_~pp~0#1.base_9 : int :: 0 < unknown-#memory_int-unknown[v_ULTIMATE.start_main_~pp~0#1.base_9 := unknown-#memory_int-unknown[v_ULTIMATE.start_main_~pp~0#1.base_9][0 := v_ArrVal_179]][qq][qq] + 2147483648 || v_ArrVal_179 < 0) || !(1 < aux-qq-aux))) RESULT: Ultimate proved your program to be correct! [2022-11-23 02:29:41,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a853215-0c3c-45e9-aa5c-410d14f99808/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE