./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex11.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_896dfe29-9a06-4d22-bab9-e5ee9bf1a829/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_896dfe29-9a06-4d22-bab9-e5ee9bf1a829/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_896dfe29-9a06-4d22-bab9-e5ee9bf1a829/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_896dfe29-9a06-4d22-bab9-e5ee9bf1a829/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex11.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_896dfe29-9a06-4d22-bab9-e5ee9bf1a829/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_896dfe29-9a06-4d22-bab9-e5ee9bf1a829/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --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 a88778e925af9c1a64b7e94f7ff093b6408bd8b2e5fbc09d91ee3e64112df49e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:00:01,176 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:00:01,291 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_896dfe29-9a06-4d22-bab9-e5ee9bf1a829/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-26 12:00:01,298 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:00:01,299 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:00:01,339 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:00:01,340 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:00:01,340 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:00:01,341 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:00:01,346 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:00:01,347 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:00:01,348 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:00:01,349 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:00:01,350 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:00:01,351 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:00:01,351 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:00:01,352 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:00:01,352 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:00:01,353 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:00:01,354 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:00:01,355 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:00:01,356 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:00:01,357 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 12:00:01,357 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:00:01,358 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:00:01,358 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:00:01,359 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:00:01,360 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:00:01,360 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:00:01,361 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:00:01,362 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:00:01,362 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:00:01,363 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:00:01,363 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:00:01,363 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:00:01,364 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:00:01,364 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:00:01,364 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:00:01,364 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:00:01,365 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:00:01,365 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:00:01,365 INFO L153 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_896dfe29-9a06-4d22-bab9-e5ee9bf1a829/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_896dfe29-9a06-4d22-bab9-e5ee9bf1a829/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a88778e925af9c1a64b7e94f7ff093b6408bd8b2e5fbc09d91ee3e64112df49e [2023-11-26 12:00:01,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:00:01,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:00:01,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:00:01,733 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:00:01,734 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:00:01,735 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_896dfe29-9a06-4d22-bab9-e5ee9bf1a829/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex11.i [2023-11-26 12:00:04,912 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:00:05,191 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:00:05,191 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_896dfe29-9a06-4d22-bab9-e5ee9bf1a829/sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex11.i [2023-11-26 12:00:05,203 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_896dfe29-9a06-4d22-bab9-e5ee9bf1a829/bin/uautomizer-verify-VRDe98Ueme/data/6c5a38207/c9011b73a35d488e8979a8b385b0892b/FLAGebb7469c0 [2023-11-26 12:00:05,223 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_896dfe29-9a06-4d22-bab9-e5ee9bf1a829/bin/uautomizer-verify-VRDe98Ueme/data/6c5a38207/c9011b73a35d488e8979a8b385b0892b [2023-11-26 12:00:05,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:00:05,233 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:00:05,237 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:00:05,237 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:00:05,243 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:00:05,244 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:00:05" (1/1) ... [2023-11-26 12:00:05,245 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13372dab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:05, skipping insertion in model container [2023-11-26 12:00:05,245 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:00:05" (1/1) ... [2023-11-26 12:00:05,271 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:00:05,483 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:00:05,496 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:00:05,520 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:00:05,536 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:00:05,537 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:05 WrapperNode [2023-11-26 12:00:05,537 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:00:05,538 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:00:05,539 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:00:05,539 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:00:05,547 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:05" (1/1) ... [2023-11-26 12:00:05,561 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:05" (1/1) ... [2023-11-26 12:00:05,581 INFO L138 Inliner]: procedures = 11, calls = 20, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 41 [2023-11-26 12:00:05,582 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:00:05,583 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:00:05,583 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:00:05,583 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:00:05,593 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:05" (1/1) ... [2023-11-26 12:00:05,593 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:05" (1/1) ... [2023-11-26 12:00:05,596 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:05" (1/1) ... [2023-11-26 12:00:05,618 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [6, 4]. 60 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 4 writes are split as follows [2, 2]. [2023-11-26 12:00:05,618 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:05" (1/1) ... [2023-11-26 12:00:05,618 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:05" (1/1) ... [2023-11-26 12:00:05,623 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:05" (1/1) ... [2023-11-26 12:00:05,627 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:05" (1/1) ... [2023-11-26 12:00:05,628 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:05" (1/1) ... [2023-11-26 12:00:05,629 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:05" (1/1) ... [2023-11-26 12:00:05,631 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:00:05,633 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:00:05,633 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:00:05,633 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:00:05,634 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:05" (1/1) ... [2023-11-26 12:00:05,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:00:05,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_896dfe29-9a06-4d22-bab9-e5ee9bf1a829/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:05,668 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_896dfe29-9a06-4d22-bab9-e5ee9bf1a829/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:00:05,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_896dfe29-9a06-4d22-bab9-e5ee9bf1a829/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:00:05,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 12:00:05,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 12:00:05,717 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2023-11-26 12:00:05,717 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2023-11-26 12:00:05,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 12:00:05,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:00:05,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:00:05,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 12:00:05,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 12:00:05,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:00:05,796 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:00:05,798 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:00:05,980 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:00:06,007 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:00:06,008 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 12:00:06,009 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:00:06 BoogieIcfgContainer [2023-11-26 12:00:06,009 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:00:06,012 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:00:06,013 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:00:06,018 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:00:06,018 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:00:05" (1/3) ... [2023-11-26 12:00:06,020 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d31d85c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:00:06, skipping insertion in model container [2023-11-26 12:00:06,021 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:05" (2/3) ... [2023-11-26 12:00:06,023 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d31d85c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:00:06, skipping insertion in model container [2023-11-26 12:00:06,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:00:06" (3/3) ... [2023-11-26 12:00:06,024 INFO L112 eAbstractionObserver]: Analyzing ICFG rec_malloc_ex11.i [2023-11-26 12:00:06,042 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:00:06,042 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-26 12:00:06,087 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:00:06,094 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=LoopHeads, 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;@5c552c1b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:00:06,095 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-26 12:00:06,099 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 19 states have internal predecessors, (23), 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) [2023-11-26 12:00:06,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-26 12:00:06,111 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:06,112 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:06,112 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-26 12:00:06,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:06,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1101824130, now seen corresponding path program 1 times [2023-11-26 12:00:06,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:06,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687666325] [2023-11-26 12:00:06,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:06,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:06,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:06,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:06,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687666325] [2023-11-26 12:00:06,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687666325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:06,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:06,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:00:06,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881811655] [2023-11-26 12:00:06,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:06,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:00:06,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:06,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:00:06,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:00:06,591 INFO L87 Difference]: Start difference. First operand has 23 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 19 states have internal predecessors, (23), 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 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-11-26 12:00:06,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:06,642 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2023-11-26 12:00:06,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:00:06,645 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 8 [2023-11-26 12:00:06,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:06,652 INFO L225 Difference]: With dead ends: 26 [2023-11-26 12:00:06,653 INFO L226 Difference]: Without dead ends: 19 [2023-11-26 12:00:06,656 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 [2023-11-26 12:00:06,660 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:06,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 52 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:00:06,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-11-26 12:00:06,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-11-26 12:00:06,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 15 states have internal predecessors, (17), 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) [2023-11-26 12:00:06,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2023-11-26 12:00:06,700 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 8 [2023-11-26 12:00:06,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:06,700 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2023-11-26 12:00:06,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-11-26 12:00:06,701 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2023-11-26 12:00:06,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-26 12:00:06,702 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:06,702 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:06,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 12:00:06,703 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-26 12:00:06,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:06,704 INFO L85 PathProgramCache]: Analyzing trace with hash 203190376, now seen corresponding path program 1 times [2023-11-26 12:00:06,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:06,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7222595] [2023-11-26 12:00:06,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:06,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:06,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:07,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:07,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:07,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7222595] [2023-11-26 12:00:07,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7222595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:07,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:07,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:00:07,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724611290] [2023-11-26 12:00:07,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:07,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:00:07,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:07,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:00:07,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:00:07,119 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 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) [2023-11-26 12:00:07,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:07,211 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2023-11-26 12:00:07,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:00:07,212 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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 [2023-11-26 12:00:07,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:07,214 INFO L225 Difference]: With dead ends: 32 [2023-11-26 12:00:07,215 INFO L226 Difference]: Without dead ends: 31 [2023-11-26 12:00:07,215 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 [2023-11-26 12:00:07,217 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 9 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:07,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 57 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:00:07,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-26 12:00:07,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2023-11-26 12:00:07,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 20 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) [2023-11-26 12:00:07,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2023-11-26 12:00:07,227 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 9 [2023-11-26 12:00:07,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:07,227 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2023-11-26 12:00:07,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 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) [2023-11-26 12:00:07,228 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2023-11-26 12:00:07,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-26 12:00:07,228 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:07,229 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:07,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 12:00:07,229 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-26 12:00:07,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:07,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1991686922, now seen corresponding path program 1 times [2023-11-26 12:00:07,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:07,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312005413] [2023-11-26 12:00:07,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:07,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:07,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:07,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 12:00:07,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:07,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:07,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:07,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312005413] [2023-11-26 12:00:07,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312005413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:07,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:07,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:00:07,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876778811] [2023-11-26 12:00:07,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:07,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:00:07,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:07,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:00:07,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:00:07,379 INFO L87 Difference]: Start difference. First operand 25 states and 28 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), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 12:00:07,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:07,437 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2023-11-26 12:00:07,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:00:07,437 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), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-26 12:00:07,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:07,439 INFO L225 Difference]: With dead ends: 25 [2023-11-26 12:00:07,439 INFO L226 Difference]: Without dead ends: 24 [2023-11-26 12:00:07,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:00:07,441 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:07,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 43 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:00:07,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-26 12:00:07,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-11-26 12:00:07,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 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) [2023-11-26 12:00:07,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2023-11-26 12:00:07,449 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 11 [2023-11-26 12:00:07,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:07,449 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2023-11-26 12:00:07,450 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), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 12:00:07,450 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2023-11-26 12:00:07,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-26 12:00:07,451 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:07,451 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:07,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 12:00:07,452 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-26 12:00:07,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:07,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1612752503, now seen corresponding path program 1 times [2023-11-26 12:00:07,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:07,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092288445] [2023-11-26 12:00:07,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:07,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:07,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 12:00:07,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:07,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:07,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:07,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092288445] [2023-11-26 12:00:07,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092288445] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:07,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:07,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 12:00:07,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233999456] [2023-11-26 12:00:07,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:07,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:00:07,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:07,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:00:07,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:00:07,772 INFO L87 Difference]: Start difference. First operand 24 states and 27 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) [2023-11-26 12:00:07,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:07,868 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2023-11-26 12:00:07,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:00:07,868 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 [2023-11-26 12:00:07,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:07,870 INFO L225 Difference]: With dead ends: 49 [2023-11-26 12:00:07,871 INFO L226 Difference]: Without dead ends: 24 [2023-11-26 12:00:07,872 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 [2023-11-26 12:00:07,884 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 1 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:07,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 64 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:00:07,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-26 12:00:07,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-11-26 12:00:07,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 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) [2023-11-26 12:00:07,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2023-11-26 12:00:07,896 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 12 [2023-11-26 12:00:07,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:07,897 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2023-11-26 12:00:07,898 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) [2023-11-26 12:00:07,898 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2023-11-26 12:00:07,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-26 12:00:07,900 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:07,900 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:07,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 12:00:07,901 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-26 12:00:07,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:07,902 INFO L85 PathProgramCache]: Analyzing trace with hash -105616473, now seen corresponding path program 1 times [2023-11-26 12:00:07,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:07,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831261748] [2023-11-26 12:00:07,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:07,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:08,135 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:08,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:08,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831261748] [2023-11-26 12:00:08,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831261748] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:08,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:08,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:00:08,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314650196] [2023-11-26 12:00:08,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:08,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:00:08,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:08,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:00:08,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:00:08,139 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 6 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2023-11-26 12:00:08,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:08,243 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2023-11-26 12:00:08,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:00:08,244 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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 14 [2023-11-26 12:00:08,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:08,246 INFO L225 Difference]: With dead ends: 28 [2023-11-26 12:00:08,247 INFO L226 Difference]: Without dead ends: 27 [2023-11-26 12:00:08,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-26 12:00:08,251 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 11 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:08,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 65 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:00:08,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-26 12:00:08,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2023-11-26 12:00:08,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 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) [2023-11-26 12:00:08,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2023-11-26 12:00:08,270 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 14 [2023-11-26 12:00:08,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:08,271 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2023-11-26 12:00:08,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2023-11-26 12:00:08,271 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2023-11-26 12:00:08,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-26 12:00:08,273 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:08,273 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:08,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 12:00:08,273 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-26 12:00:08,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:08,274 INFO L85 PathProgramCache]: Analyzing trace with hash -909005191, now seen corresponding path program 1 times [2023-11-26 12:00:08,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:08,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826215508] [2023-11-26 12:00:08,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:08,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:08,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:08,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 12:00:08,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:08,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 12:00:08,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:09,087 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 12:00:09,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:09,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826215508] [2023-11-26 12:00:09,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826215508] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:00:09,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236042941] [2023-11-26 12:00:09,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:09,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:09,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_896dfe29-9a06-4d22-bab9-e5ee9bf1a829/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:09,096 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_896dfe29-9a06-4d22-bab9-e5ee9bf1a829/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:09,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_896dfe29-9a06-4d22-bab9-e5ee9bf1a829/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 12:00:09,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:09,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-26 12:00:09,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:09,295 INFO L378 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 15 treesize of output 1 [2023-11-26 12:00:09,310 INFO L378 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 [2023-11-26 12:00:09,484 INFO L349 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2023-11-26 12:00:09,485 INFO L378 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 36 treesize of output 28 [2023-11-26 12:00:09,738 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:09,739 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:00:10,153 INFO L378 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 [2023-11-26 12:00:10,523 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:10,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236042941] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:00:10,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:00:10,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 28 [2023-11-26 12:00:10,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889151209] [2023-11-26 12:00:10,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:00:10,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-26 12:00:10,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:10,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-26 12:00:10,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=719, Unknown=0, NotChecked=0, Total=812 [2023-11-26 12:00:10,527 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 29 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 24 states have internal predecessors, (39), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-26 12:00:11,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:11,132 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2023-11-26 12:00:11,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-26 12:00:11,136 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 24 states have internal predecessors, (39), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 20 [2023-11-26 12:00:11,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:11,136 INFO L225 Difference]: With dead ends: 27 [2023-11-26 12:00:11,136 INFO L226 Difference]: Without dead ends: 0 [2023-11-26 12:00:11,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=168, Invalid=1314, Unknown=0, NotChecked=0, Total=1482 [2023-11-26 12:00:11,138 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 16 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:11,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 43 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 258 Invalid, 1 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 12:00:11,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-26 12:00:11,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-26 12:00:11,140 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) [2023-11-26 12:00:11,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-26 12:00:11,140 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2023-11-26 12:00:11,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:11,140 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 12:00:11,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 24 states have internal predecessors, (39), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-26 12:00:11,141 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-26 12:00:11,141 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-26 12:00:11,143 INFO L805 garLoopResultBuilder]: Registering result SAFE for location recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2023-11-26 12:00:11,144 INFO L805 garLoopResultBuilder]: Registering result SAFE for location recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2023-11-26 12:00:11,144 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2023-11-26 12:00:11,144 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2023-11-26 12:00:11,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_896dfe29-9a06-4d22-bab9-e5ee9bf1a829/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:11,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_896dfe29-9a06-4d22-bab9-e5ee9bf1a829/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-26 12:00:11,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-26 12:00:11,428 INFO L899 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2023-11-26 12:00:11,429 INFO L899 garLoopResultBuilder]: For program point L16-1(line 16) no Hoare annotation was computed. [2023-11-26 12:00:11,429 INFO L899 garLoopResultBuilder]: For program point recFINAL(lines 8 22) no Hoare annotation was computed. [2023-11-26 12:00:11,429 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 8 22) the Hoare annotation is: (or (< 2147483647 (select (select |old(#memory_int#0)| |rec_#in~op.base|) |rec_#in~op.offset|)) (and (= |old(#length)| |#length|) (= |#memory_int#0| |old(#memory_int#0)|) (= |old(#valid)| |#valid|))) [2023-11-26 12:00:11,429 INFO L899 garLoopResultBuilder]: For program point L9(lines 9 13) no Hoare annotation was computed. [2023-11-26 12:00:11,430 INFO L899 garLoopResultBuilder]: For program point recEXIT(lines 8 22) no Hoare annotation was computed. [2023-11-26 12:00:11,430 INFO L899 garLoopResultBuilder]: For program point recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 16) no Hoare annotation was computed. [2023-11-26 12:00:11,430 INFO L899 garLoopResultBuilder]: For program point recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 16) no Hoare annotation was computed. [2023-11-26 12:00:11,430 INFO L895 garLoopResultBuilder]: At program point L19(line 19) the Hoare annotation is: (let ((.cse0 (select (select |old(#memory_int#0)| |rec_#in~op.base|) |rec_#in~op.offset|))) (or (< 2147483647 .cse0) (let ((.cse1 (select (select |#memory_int#0| rec_~ip~0.base) 0))) (and (<= 0 (+ 1 .cse1)) (let ((.cse2 (+ (select (select |#memory_int#0| |rec_#in~op.base|) |rec_#in~op.offset|) 1))) (or (< 0 .cse2) (= .cse2 0) (< (+ .cse0 1) 0))) (= rec_~ip~0.offset 0) (<= .cse1 2147483647))))) [2023-11-26 12:00:11,430 INFO L899 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2023-11-26 12:00:11,431 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 36) no Hoare annotation was computed. [2023-11-26 12:00:11,431 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-26 12:00:11,431 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-26 12:00:11,431 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int#1| |ULTIMATE.start_main_~qq~0#1.base|) |ULTIMATE.start_main_~qq~0#1.offset|)) (.cse1 (select (select |#memory_int#0| |ULTIMATE.start_main_~pp~0#1.base|) |ULTIMATE.start_main_~pp~0#1.offset|))) (and (<= 2 |ULTIMATE.start_main_#t~mem13#1|) (<= .cse0 2147483647) (<= 2 .cse0) (<= |ULTIMATE.start_main_#t~mem13#1| 2147483647) (<= 0 .cse1) (<= .cse1 2147483647))) [2023-11-26 12:00:11,432 INFO L899 garLoopResultBuilder]: For program point L36-1(line 36) no Hoare annotation was computed. [2023-11-26 12:00:11,432 INFO L899 garLoopResultBuilder]: For program point L36-2(line 36) no Hoare annotation was computed. [2023-11-26 12:00:11,432 INFO L899 garLoopResultBuilder]: For program point L36-3(line 36) no Hoare annotation was computed. [2023-11-26 12:00:11,432 INFO L899 garLoopResultBuilder]: For program point L32(lines 32 34) no Hoare annotation was computed. [2023-11-26 12:00:11,432 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 36) no Hoare annotation was computed. [2023-11-26 12:00:11,432 INFO L899 garLoopResultBuilder]: For program point L28-1(lines 28 37) no Hoare annotation was computed. [2023-11-26 12:00:11,433 INFO L895 garLoopResultBuilder]: At program point L28-3(lines 28 37) the Hoare annotation is: (<= (select (select |#memory_int#1| |ULTIMATE.start_main_~qq~0#1.base|) |ULTIMATE.start_main_~qq~0#1.offset|) 2147483647) [2023-11-26 12:00:11,434 INFO L899 garLoopResultBuilder]: For program point L28-4(lines 28 37) no Hoare annotation was computed. [2023-11-26 12:00:11,434 INFO L899 garLoopResultBuilder]: For program point L24(lines 24 41) no Hoare annotation was computed. [2023-11-26 12:00:11,438 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-26 12:00:11,440 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 12:00:11,452 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~qq~0!base][~qq~0!offset] could not be translated [2023-11-26 12:00:11,455 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:00:11 BoogieIcfgContainer [2023-11-26 12:00:11,455 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 12:00:11,456 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 12:00:11,456 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 12:00:11,456 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 12:00:11,457 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:00:06" (3/4) ... [2023-11-26 12:00:11,458 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 12:00:11,462 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure rec [2023-11-26 12:00:11,468 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-11-26 12:00:11,469 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-26 12:00:11,469 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-26 12:00:11,469 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-26 12:00:11,569 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_896dfe29-9a06-4d22-bab9-e5ee9bf1a829/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 12:00:11,570 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_896dfe29-9a06-4d22-bab9-e5ee9bf1a829/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 12:00:11,570 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 12:00:11,571 INFO L158 Benchmark]: Toolchain (without parser) took 6338.10ms. Allocated memory was 182.5MB in the beginning and 220.2MB in the end (delta: 37.7MB). Free memory was 144.6MB in the beginning and 147.2MB in the end (delta: -2.6MB). Peak memory consumption was 37.6MB. Max. memory is 16.1GB. [2023-11-26 12:00:11,571 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 134.2MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 12:00:11,572 INFO L158 Benchmark]: CACSL2BoogieTranslator took 300.62ms. Allocated memory is still 182.5MB. Free memory was 144.2MB in the beginning and 134.1MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-26 12:00:11,574 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.85ms. Allocated memory is still 182.5MB. Free memory was 134.1MB in the beginning and 132.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 12:00:11,576 INFO L158 Benchmark]: Boogie Preprocessor took 49.00ms. Allocated memory is still 182.5MB. Free memory was 132.9MB in the beginning and 130.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 12:00:11,577 INFO L158 Benchmark]: RCFGBuilder took 376.93ms. Allocated memory is still 182.5MB. Free memory was 130.9MB in the beginning and 119.0MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-26 12:00:11,577 INFO L158 Benchmark]: TraceAbstraction took 5443.02ms. Allocated memory was 182.5MB in the beginning and 220.2MB in the end (delta: 37.7MB). Free memory was 118.3MB in the beginning and 151.4MB in the end (delta: -33.1MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. [2023-11-26 12:00:11,578 INFO L158 Benchmark]: Witness Printer took 114.62ms. Allocated memory is still 220.2MB. Free memory was 151.4MB in the beginning and 147.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 12:00:11,580 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 134.2MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 300.62ms. Allocated memory is still 182.5MB. Free memory was 144.2MB in the beginning and 134.1MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.85ms. Allocated memory is still 182.5MB. Free memory was 134.1MB in the beginning and 132.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.00ms. Allocated memory is still 182.5MB. Free memory was 132.9MB in the beginning and 130.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 376.93ms. Allocated memory is still 182.5MB. Free memory was 130.9MB in the beginning and 119.0MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 5443.02ms. Allocated memory was 182.5MB in the beginning and 220.2MB in the end (delta: 37.7MB). Free memory was 118.3MB in the beginning and 151.4MB in the end (delta: -33.1MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. * Witness Printer took 114.62ms. Allocated memory is still 220.2MB. Free memory was 151.4MB in the beginning and 147.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~qq~0!base][~qq~0!offset] could not be translated * 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: 36]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 36]: 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, 23 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 5.4s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 46 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 46 mSDsluCounter, 324 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 242 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 467 IncrementalHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 82 mSDtfsCounter, 467 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=2, InterpolantAutomatonStates: 47, 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, 6 MinimizatonAttempts, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 10 PreInvPairs, 12 NumberOfFragments, 116 HoareAnnotationTreeSize, 10 FomulaSimplifications, 46 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 106 ConstructedInterpolants, 2 QuantifiedInterpolants, 738 SizeOfPredicates, 11 NumberOfNonLiveVariables, 127 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 10/16 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: 28]: Loop Invariant Derived loop invariant: null RESULT: Ultimate proved your program to be correct! [2023-11-26 12:00:11,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_896dfe29-9a06-4d22-bab9-e5ee9bf1a829/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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