./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/list-simple/dll2c_remove_all.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b 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_e09df531-3d6f-48e2-a530-2c8a95dee4bd/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09df531-3d6f-48e2-a530-2c8a95dee4bd/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09df531-3d6f-48e2-a530-2c8a95dee4bd/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09df531-3d6f-48e2-a530-2c8a95dee4bd/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-simple/dll2c_remove_all.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09df531-3d6f-48e2-a530-2c8a95dee4bd/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09df531-3d6f-48e2-a530-2c8a95dee4bd/bin/uautomizer-verify-WvqO1wxjHP --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 32bit --witnessprinter.graph.data.programhash 6c2ed91303515fb47ae50633bb4ba0c83e07781b13d03a95e0e32251f9fc3016 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:39:41,291 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:39:41,375 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09df531-3d6f-48e2-a530-2c8a95dee4bd/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:39:41,381 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:39:41,382 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:39:41,409 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:39:41,410 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:39:41,410 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:39:41,411 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:39:41,411 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:39:41,412 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:39:41,413 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:39:41,413 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:39:41,414 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:39:41,418 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:39:41,419 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:39:41,421 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:39:41,424 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:39:41,425 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:39:41,425 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:39:41,426 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:39:41,428 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:39:41,428 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:39:41,428 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:39:41,429 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:39:41,429 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:39:41,429 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:39:41,430 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:39:41,430 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:39:41,431 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:39:41,431 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:39:41,431 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:39:41,432 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:39:41,432 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:39:41,433 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:39:41,433 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:39:41,433 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:39:41,434 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:39:41,434 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:39:41,434 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:39:41,435 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:39:41,437 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_e09df531-3d6f-48e2-a530-2c8a95dee4bd/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09df531-3d6f-48e2-a530-2c8a95dee4bd/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c2ed91303515fb47ae50633bb4ba0c83e07781b13d03a95e0e32251f9fc3016 [2023-11-06 22:39:41,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:39:41,715 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:39:41,718 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:39:41,719 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:39:41,720 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:39:41,721 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09df531-3d6f-48e2-a530-2c8a95dee4bd/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/list-simple/dll2c_remove_all.i [2023-11-06 22:39:44,798 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:39:45,038 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:39:45,039 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09df531-3d6f-48e2-a530-2c8a95dee4bd/sv-benchmarks/c/list-simple/dll2c_remove_all.i [2023-11-06 22:39:45,056 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09df531-3d6f-48e2-a530-2c8a95dee4bd/bin/uautomizer-verify-WvqO1wxjHP/data/cac91d0d4/8a2ccf276f1a4ea38aedec47b554598e/FLAG9ea6b7757 [2023-11-06 22:39:45,071 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09df531-3d6f-48e2-a530-2c8a95dee4bd/bin/uautomizer-verify-WvqO1wxjHP/data/cac91d0d4/8a2ccf276f1a4ea38aedec47b554598e [2023-11-06 22:39:45,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:39:45,076 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:39:45,077 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:39:45,077 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:39:45,083 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:39:45,083 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:39:45" (1/1) ... [2023-11-06 22:39:45,085 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e6dbef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:45, skipping insertion in model container [2023-11-06 22:39:45,085 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:39:45" (1/1) ... [2023-11-06 22:39:45,161 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:39:45,548 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:39:45,562 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:39:45,607 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:39:45,645 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:39:45,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:45 WrapperNode [2023-11-06 22:39:45,645 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:39:45,646 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:39:45,647 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:39:45,647 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:39:45,654 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:45" (1/1) ... [2023-11-06 22:39:45,669 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:45" (1/1) ... [2023-11-06 22:39:45,696 INFO L138 Inliner]: procedures = 126, calls = 39, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 113 [2023-11-06 22:39:45,697 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:39:45,698 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:39:45,698 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:39:45,698 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:39:45,707 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:45" (1/1) ... [2023-11-06 22:39:45,707 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:45" (1/1) ... [2023-11-06 22:39:45,711 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:45" (1/1) ... [2023-11-06 22:39:45,711 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:45" (1/1) ... [2023-11-06 22:39:45,720 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:45" (1/1) ... [2023-11-06 22:39:45,723 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:45" (1/1) ... [2023-11-06 22:39:45,725 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:45" (1/1) ... [2023-11-06 22:39:45,727 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:45" (1/1) ... [2023-11-06 22:39:45,730 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:39:45,731 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:39:45,731 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:39:45,731 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:39:45,732 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:45" (1/1) ... [2023-11-06 22:39:45,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:39:45,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09df531-3d6f-48e2-a530-2c8a95dee4bd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:39:45,765 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09df531-3d6f-48e2-a530-2c8a95dee4bd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:39:45,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09df531-3d6f-48e2-a530-2c8a95dee4bd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:39:45,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:39:45,807 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2023-11-06 22:39:45,807 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2023-11-06 22:39:45,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:39:45,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:39:45,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:39:45,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:39:45,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:39:45,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:39:45,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-06 22:39:45,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:39:45,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:39:45,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:39:45,926 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:39:45,928 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:39:46,151 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:39:46,158 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:39:46,158 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 22:39:46,160 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:39:46 BoogieIcfgContainer [2023-11-06 22:39:46,160 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:39:46,163 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:39:46,163 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:39:46,170 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:39:46,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:39:45" (1/3) ... [2023-11-06 22:39:46,171 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e3305f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:39:46, skipping insertion in model container [2023-11-06 22:39:46,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:45" (2/3) ... [2023-11-06 22:39:46,172 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e3305f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:39:46, skipping insertion in model container [2023-11-06 22:39:46,172 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:39:46" (3/3) ... [2023-11-06 22:39:46,173 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2c_remove_all.i [2023-11-06 22:39:46,194 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:39:46,195 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-06 22:39:46,277 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:39:46,287 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;@2df637e2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:39:46,288 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-06 22:39:46,294 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 28 states have (on average 1.4642857142857142) internal successors, (41), 32 states have internal predecessors, (41), 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) [2023-11-06 22:39:46,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-06 22:39:46,304 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:39:46,305 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:39:46,305 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-06 22:39:46,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:46,313 INFO L85 PathProgramCache]: Analyzing trace with hash 719801578, now seen corresponding path program 1 times [2023-11-06 22:39:46,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:39:46,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840836947] [2023-11-06 22:39:46,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:46,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:39:46,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:46,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:39:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:46,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:39:46,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:39:46,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840836947] [2023-11-06 22:39:46,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840836947] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:39:46,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:39:46,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:39:46,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449563124] [2023-11-06 22:39:46,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:39:46,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:39:46,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:39:46,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:39:46,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:39:46,868 INFO L87 Difference]: Start difference. First operand has 36 states, 28 states have (on average 1.4642857142857142) internal successors, (41), 32 states have internal predecessors, (41), 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, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-11-06 22:39:46,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:39:46,991 INFO L93 Difference]: Finished difference Result 61 states and 78 transitions. [2023-11-06 22:39:46,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:39:46,995 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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 16 [2023-11-06 22:39:46,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:39:47,002 INFO L225 Difference]: With dead ends: 61 [2023-11-06 22:39:47,004 INFO L226 Difference]: Without dead ends: 36 [2023-11-06 22:39:47,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:39:47,013 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 8 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:39:47,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 91 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:39:47,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-11-06 22:39:47,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2023-11-06 22:39:47,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 24 states have internal predecessors, (28), 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) [2023-11-06 22:39:47,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2023-11-06 22:39:47,069 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2023-11-06 22:39:47,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:39:47,070 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2023-11-06 22:39:47,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-11-06 22:39:47,070 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2023-11-06 22:39:47,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-06 22:39:47,072 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:39:47,072 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:39:47,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:39:47,073 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-06 22:39:47,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:47,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1744928612, now seen corresponding path program 1 times [2023-11-06 22:39:47,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:39:47,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307407231] [2023-11-06 22:39:47,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:47,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:39:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:47,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:39:47,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:47,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:39:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:47,304 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 22:39:47,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:39:47,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307407231] [2023-11-06 22:39:47,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307407231] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:39:47,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:39:47,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:39:47,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110102193] [2023-11-06 22:39:47,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:39:47,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:39:47,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:39:47,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:39:47,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:39:47,309 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:39:47,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:39:47,414 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2023-11-06 22:39:47,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:39:47,415 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2023-11-06 22:39:47,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:39:47,417 INFO L225 Difference]: With dead ends: 36 [2023-11-06 22:39:47,417 INFO L226 Difference]: Without dead ends: 34 [2023-11-06 22:39:47,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:39:47,419 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 4 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:39:47,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 84 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:39:47,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-11-06 22:39:47,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2023-11-06 22:39:47,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 29 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:39:47,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2023-11-06 22:39:47,431 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 20 [2023-11-06 22:39:47,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:39:47,432 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2023-11-06 22:39:47,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:39:47,433 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2023-11-06 22:39:47,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-06 22:39:47,436 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:39:47,436 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:39:47,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:39:47,437 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-06 22:39:47,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:47,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1356662268, now seen corresponding path program 1 times [2023-11-06 22:39:47,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:39:47,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527386785] [2023-11-06 22:39:47,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:47,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:39:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:47,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:39:47,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:47,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:39:47,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:47,781 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:39:47,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:39:47,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527386785] [2023-11-06 22:39:47,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527386785] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:39:47,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:39:47,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:39:47,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548943500] [2023-11-06 22:39:47,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:39:47,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:39:47,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:39:47,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:39:47,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:39:47,792 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:39:47,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:39:47,876 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2023-11-06 22:39:47,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:39:47,877 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2023-11-06 22:39:47,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:39:47,889 INFO L225 Difference]: With dead ends: 41 [2023-11-06 22:39:47,889 INFO L226 Difference]: Without dead ends: 39 [2023-11-06 22:39:47,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:39:47,891 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 4 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:39:47,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 89 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:39:47,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-06 22:39:47,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-11-06 22:39:47,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 34 states have internal predecessors, (40), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:39:47,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2023-11-06 22:39:47,905 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 28 [2023-11-06 22:39:47,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:39:47,906 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2023-11-06 22:39:47,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:39:47,906 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2023-11-06 22:39:47,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-06 22:39:47,909 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:39:47,909 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:39:47,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:39:47,909 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-06 22:39:47,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:47,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1150263434, now seen corresponding path program 1 times [2023-11-06 22:39:47,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:39:47,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498380315] [2023-11-06 22:39:47,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:47,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:39:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:48,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:39:48,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:48,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:39:48,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:48,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:39:48,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:48,173 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-06 22:39:48,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:39:48,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498380315] [2023-11-06 22:39:48,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498380315] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:39:48,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8470826] [2023-11-06 22:39:48,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:48,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:39:48,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09df531-3d6f-48e2-a530-2c8a95dee4bd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:39:48,179 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09df531-3d6f-48e2-a530-2c8a95dee4bd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:39:48,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09df531-3d6f-48e2-a530-2c8a95dee4bd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:39:48,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:48,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:39:48,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:39:48,441 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 22:39:48,441 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:39:48,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8470826] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:39:48,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:39:48,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2023-11-06 22:39:48,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125390383] [2023-11-06 22:39:48,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:39:48,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:39:48,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:39:48,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:39:48,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:39:48,444 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 22:39:48,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:39:48,479 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2023-11-06 22:39:48,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:39:48,479 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2023-11-06 22:39:48,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:39:48,480 INFO L225 Difference]: With dead ends: 59 [2023-11-06 22:39:48,480 INFO L226 Difference]: Without dead ends: 31 [2023-11-06 22:39:48,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:39:48,483 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 7 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:39:48,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 65 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:39:48,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-06 22:39:48,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-11-06 22:39:48,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 27 states have internal predecessors, (31), 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) [2023-11-06 22:39:48,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2023-11-06 22:39:48,490 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 32 [2023-11-06 22:39:48,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:39:48,490 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2023-11-06 22:39:48,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 22:39:48,491 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2023-11-06 22:39:48,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-06 22:39:48,492 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:39:48,492 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:39:48,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09df531-3d6f-48e2-a530-2c8a95dee4bd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:39:48,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09df531-3d6f-48e2-a530-2c8a95dee4bd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-06 22:39:48,699 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-06 22:39:48,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:48,700 INFO L85 PathProgramCache]: Analyzing trace with hash -332905285, now seen corresponding path program 1 times [2023-11-06 22:39:48,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:39:48,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598947574] [2023-11-06 22:39:48,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:48,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:39:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:48,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:39:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:48,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:39:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:48,956 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:39:48,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:39:48,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598947574] [2023-11-06 22:39:48,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598947574] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:39:48,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731050147] [2023-11-06 22:39:48,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:48,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:39:48,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09df531-3d6f-48e2-a530-2c8a95dee4bd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:39:48,959 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09df531-3d6f-48e2-a530-2c8a95dee4bd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:39:48,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09df531-3d6f-48e2-a530-2c8a95dee4bd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:39:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:49,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:39:49,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:39:49,208 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:39:49,208 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:39:49,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731050147] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:39:49,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:39:49,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2023-11-06 22:39:49,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288554158] [2023-11-06 22:39:49,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:39:49,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:39:49,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:39:49,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:39:49,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:39:49,211 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:39:49,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:39:49,256 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2023-11-06 22:39:49,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:39:49,257 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2023-11-06 22:39:49,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:39:49,258 INFO L225 Difference]: With dead ends: 31 [2023-11-06 22:39:49,258 INFO L226 Difference]: Without dead ends: 30 [2023-11-06 22:39:49,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:39:49,260 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 10 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:39:49,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 94 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:39:49,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-11-06 22:39:49,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-11-06 22:39:49,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 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) [2023-11-06 22:39:49,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2023-11-06 22:39:49,267 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 33 [2023-11-06 22:39:49,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:39:49,267 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2023-11-06 22:39:49,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:39:49,268 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2023-11-06 22:39:49,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-06 22:39:49,269 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:39:49,269 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:39:49,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09df531-3d6f-48e2-a530-2c8a95dee4bd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:39:49,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09df531-3d6f-48e2-a530-2c8a95dee4bd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:39:49,476 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-06 22:39:49,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:49,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1730129161, now seen corresponding path program 1 times [2023-11-06 22:39:49,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:39:49,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263782431] [2023-11-06 22:39:49,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:49,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:39:49,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:49,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:39:49,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:49,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:39:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:49,671 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:39:49,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:39:49,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263782431] [2023-11-06 22:39:49,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263782431] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:39:49,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590688411] [2023-11-06 22:39:49,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:49,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:39:49,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09df531-3d6f-48e2-a530-2c8a95dee4bd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:39:49,673 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09df531-3d6f-48e2-a530-2c8a95dee4bd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:39:49,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09df531-3d6f-48e2-a530-2c8a95dee4bd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:39:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:49,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:39:49,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:39:49,956 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:39:49,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:39:50,036 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:39:50,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590688411] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:39:50,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:39:50,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2023-11-06 22:39:50,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298359946] [2023-11-06 22:39:50,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:39:50,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:39:50,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:39:50,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:39:50,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:39:50,039 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:39:50,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:39:50,185 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2023-11-06 22:39:50,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:39:50,186 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 34 [2023-11-06 22:39:50,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:39:50,191 INFO L225 Difference]: With dead ends: 46 [2023-11-06 22:39:50,191 INFO L226 Difference]: Without dead ends: 45 [2023-11-06 22:39:50,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:39:50,196 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 27 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:39:50,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 126 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:39:50,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-11-06 22:39:50,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-11-06 22:39:50,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 41 states have (on average 1.170731707317073) internal successors, (48), 41 states have internal predecessors, (48), 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) [2023-11-06 22:39:50,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2023-11-06 22:39:50,212 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 34 [2023-11-06 22:39:50,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:39:50,213 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2023-11-06 22:39:50,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:39:50,214 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2023-11-06 22:39:50,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-06 22:39:50,218 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:39:50,218 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:39:50,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09df531-3d6f-48e2-a530-2c8a95dee4bd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:39:50,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09df531-3d6f-48e2-a530-2c8a95dee4bd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 22:39:50,424 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-06 22:39:50,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:50,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1027836694, now seen corresponding path program 2 times [2023-11-06 22:39:50,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:39:50,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058248027] [2023-11-06 22:39:50,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:50,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:39:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:50,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:39:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:50,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:39:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:50,649 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-06 22:39:50,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:39:50,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058248027] [2023-11-06 22:39:50,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058248027] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:39:50,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341570410] [2023-11-06 22:39:50,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:39:50,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:39:50,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09df531-3d6f-48e2-a530-2c8a95dee4bd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:39:50,652 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09df531-3d6f-48e2-a530-2c8a95dee4bd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:39:50,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09df531-3d6f-48e2-a530-2c8a95dee4bd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:39:50,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:39:50,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:39:50,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:39:50,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:39:50,936 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-06 22:39:50,936 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:39:51,048 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-06 22:39:51,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341570410] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:39:51,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:39:51,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2023-11-06 22:39:51,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398857185] [2023-11-06 22:39:51,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:39:51,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:39:51,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:39:51,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:39:51,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:39:51,051 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-06 22:39:51,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:39:51,133 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2023-11-06 22:39:51,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:39:51,133 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 49 [2023-11-06 22:39:51,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:39:51,133 INFO L225 Difference]: With dead ends: 45 [2023-11-06 22:39:51,134 INFO L226 Difference]: Without dead ends: 0 [2023-11-06 22:39:51,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:39:51,135 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 10 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:39:51,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 84 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:39:51,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-06 22:39:51,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-06 22:39:51,136 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) [2023-11-06 22:39:51,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-06 22:39:51,136 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2023-11-06 22:39:51,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:39:51,137 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 22:39:51,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-06 22:39:51,137 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-06 22:39:51,137 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-06 22:39:51,140 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2023-11-06 22:39:51,140 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2023-11-06 22:39:51,141 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2023-11-06 22:39:51,141 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2023-11-06 22:39:51,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09df531-3d6f-48e2-a530-2c8a95dee4bd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:39:51,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09df531-3d6f-48e2-a530-2c8a95dee4bd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:39:51,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-06 22:39:51,443 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 621) no Hoare annotation was computed. [2023-11-06 22:39:51,443 INFO L899 garLoopResultBuilder]: For program point L601(lines 601 613) no Hoare annotation was computed. [2023-11-06 22:39:51,443 INFO L895 garLoopResultBuilder]: At program point L589(line 589) the Hoare annotation is: (and (= 2 |ULTIMATE.start_dll_circular_create_~len#1|) (= |ULTIMATE.start_main_~len~0#1| 2)) [2023-11-06 22:39:51,443 INFO L899 garLoopResultBuilder]: For program point L589-1(line 589) no Hoare annotation was computed. [2023-11-06 22:39:51,444 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 614 629) the Hoare annotation is: true [2023-11-06 22:39:51,445 INFO L895 garLoopResultBuilder]: At program point dll_circular_create_returnLabel#1(lines 585 600) the Hoare annotation is: (and (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1)) [2023-11-06 22:39:51,445 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-11-06 22:39:51,445 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 595) no Hoare annotation was computed. [2023-11-06 22:39:51,445 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-11-06 22:39:51,445 INFO L899 garLoopResultBuilder]: For program point L623(lines 623 625) no Hoare annotation was computed. [2023-11-06 22:39:51,445 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2023-11-06 22:39:51,446 INFO L895 garLoopResultBuilder]: At program point L586(line 586) the Hoare annotation is: (and (= 2 |ULTIMATE.start_dll_circular_create_~len#1|) (= |ULTIMATE.start_main_~len~0#1| 2)) [2023-11-06 22:39:51,446 INFO L899 garLoopResultBuilder]: For program point L12-2(line 12) no Hoare annotation was computed. [2023-11-06 22:39:51,446 INFO L899 garLoopResultBuilder]: For program point L586-1(line 586) no Hoare annotation was computed. [2023-11-06 22:39:51,446 INFO L895 garLoopResultBuilder]: At program point L619-2(lines 619 622) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~len~0#1| 2))) (or (and (= |ULTIMATE.start_main_~i~0#1| 0) .cse0) (and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483646) .cse0))) [2023-11-06 22:39:51,446 INFO L899 garLoopResultBuilder]: For program point L619-3(lines 619 622) no Hoare annotation was computed. [2023-11-06 22:39:51,446 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 595) no Hoare annotation was computed. [2023-11-06 22:39:51,446 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-06 22:39:51,447 INFO L899 garLoopResultBuilder]: For program point L603(lines 603 612) no Hoare annotation was computed. [2023-11-06 22:39:51,447 INFO L899 garLoopResultBuilder]: For program point L595(line 595) no Hoare annotation was computed. [2023-11-06 22:39:51,447 INFO L899 garLoopResultBuilder]: For program point L595-1(line 595) no Hoare annotation was computed. [2023-11-06 22:39:51,447 INFO L899 garLoopResultBuilder]: For program point L591(lines 591 593) no Hoare annotation was computed. [2023-11-06 22:39:51,447 INFO L899 garLoopResultBuilder]: For program point L591-2(lines 591 593) no Hoare annotation was computed. [2023-11-06 22:39:51,447 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-06 22:39:51,447 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 621) no Hoare annotation was computed. [2023-11-06 22:39:51,450 INFO L902 garLoopResultBuilder]: At program point main_ERROR#1(lines 614 629) the Hoare annotation is: true [2023-11-06 22:39:51,450 INFO L899 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2023-11-06 22:39:51,450 INFO L899 garLoopResultBuilder]: For program point L621-1(line 621) no Hoare annotation was computed. [2023-11-06 22:39:51,450 INFO L895 garLoopResultBuilder]: At program point L588-2(lines 588 596) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~len~0#1| 2))) (or (and .cse0 (<= |ULTIMATE.start_dll_circular_create_~len#1| 1)) (and (= 2 |ULTIMATE.start_dll_circular_create_~len#1|) .cse0))) [2023-11-06 22:39:51,450 INFO L899 garLoopResultBuilder]: For program point L588-3(lines 588 596) no Hoare annotation was computed. [2023-11-06 22:39:51,450 INFO L899 garLoopResultBuilder]: For program point L577(lines 577 579) no Hoare annotation was computed. [2023-11-06 22:39:51,451 INFO L899 garLoopResultBuilder]: For program point L577-1(lines 577 579) no Hoare annotation was computed. [2023-11-06 22:39:51,451 INFO L902 garLoopResultBuilder]: At program point L573(line 573) the Hoare annotation is: true [2023-11-06 22:39:51,451 INFO L899 garLoopResultBuilder]: For program point node_createFINAL(lines 575 584) no Hoare annotation was computed. [2023-11-06 22:39:51,451 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 575 584) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|)) [2023-11-06 22:39:51,451 INFO L899 garLoopResultBuilder]: For program point node_createEXIT(lines 575 584) no Hoare annotation was computed. [2023-11-06 22:39:51,454 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-11-06 22:39:51,457 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:39:51,473 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:39:51 BoogieIcfgContainer [2023-11-06 22:39:51,473 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:39:51,474 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:39:51,474 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:39:51,474 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:39:51,474 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:39:46" (3/4) ... [2023-11-06 22:39:51,476 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:39:51,481 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure node_create [2023-11-06 22:39:51,489 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-11-06 22:39:51,489 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-06 22:39:51,489 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:39:51,490 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:39:51,574 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09df531-3d6f-48e2-a530-2c8a95dee4bd/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:39:51,574 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09df531-3d6f-48e2-a530-2c8a95dee4bd/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:39:51,574 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:39:51,575 INFO L158 Benchmark]: Toolchain (without parser) took 6499.38ms. Allocated memory was 169.9MB in the beginning and 205.5MB in the end (delta: 35.7MB). Free memory was 122.6MB in the beginning and 165.0MB in the end (delta: -42.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:39:51,575 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory is still 67.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:39:51,576 INFO L158 Benchmark]: CACSL2BoogieTranslator took 568.58ms. Allocated memory is still 169.9MB. Free memory was 122.6MB in the beginning and 105.0MB in the end (delta: 17.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-06 22:39:51,576 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.58ms. Allocated memory is still 169.9MB. Free memory was 105.0MB in the beginning and 102.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:39:51,576 INFO L158 Benchmark]: Boogie Preprocessor took 32.53ms. Allocated memory is still 169.9MB. Free memory was 102.9MB in the beginning and 101.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:39:51,577 INFO L158 Benchmark]: RCFGBuilder took 429.41ms. Allocated memory is still 169.9MB. Free memory was 101.7MB in the beginning and 84.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-06 22:39:51,577 INFO L158 Benchmark]: TraceAbstraction took 5310.09ms. Allocated memory was 169.9MB in the beginning and 205.5MB in the end (delta: 35.7MB). Free memory was 84.1MB in the beginning and 169.2MB in the end (delta: -85.1MB). Peak memory consumption was 56.0MB. Max. memory is 16.1GB. [2023-11-06 22:39:51,578 INFO L158 Benchmark]: Witness Printer took 100.93ms. Allocated memory is still 205.5MB. Free memory was 169.2MB in the beginning and 165.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 22:39:51,581 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory is still 67.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 568.58ms. Allocated memory is still 169.9MB. Free memory was 122.6MB in the beginning and 105.0MB in the end (delta: 17.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.58ms. Allocated memory is still 169.9MB. Free memory was 105.0MB in the beginning and 102.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.53ms. Allocated memory is still 169.9MB. Free memory was 102.9MB in the beginning and 101.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 429.41ms. Allocated memory is still 169.9MB. Free memory was 101.7MB in the beginning and 84.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 5310.09ms. Allocated memory was 169.9MB in the beginning and 205.5MB in the end (delta: 35.7MB). Free memory was 84.1MB in the beginning and 169.2MB in the end (delta: -85.1MB). Peak memory consumption was 56.0MB. Max. memory is 16.1GB. * Witness Printer took 100.93ms. Allocated memory is still 205.5MB. Free memory was 169.2MB in the beginning and 165.0MB 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.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: 595]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 595]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 621]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 621]: 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, 36 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 5.2s, OverallIterations: 7, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 71 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 70 mSDsluCounter, 633 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 450 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 221 IncrementalHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 183 mSDtfsCounter, 221 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 293 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=6, InterpolantAutomatonStates: 43, 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, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 13 PreInvPairs, 24 NumberOfFragments, 73 HoareAnnotationTreeSize, 13 FomulaSimplifications, 37 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 17 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 360 NumberOfCodeBlocks, 332 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 430 ConstructedInterpolants, 0 QuantifiedInterpolants, 1028 SizeOfPredicates, 10 NumberOfNonLiveVariables, 1198 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 13 InterpolantComputations, 5 PerfectInterpolantSequences, 206/274 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: 585]: Loop Invariant Derived loop invariant: ((len == 2) && (len <= 1)) - InvariantResult [Line: 619]: Loop Invariant Derived loop invariant: (((i == 0) && (len == 2)) || (((1 <= i) && (i <= 2147483646)) && (len == 2))) - InvariantResult [Line: 614]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 614]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 588]: Loop Invariant Derived loop invariant: (((len == 2) && (len <= 1)) || ((2 == len) && (len == 2))) - InvariantResult [Line: 573]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-11-06 22:39:51,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e09df531-3d6f-48e2-a530-2c8a95dee4bd/bin/uautomizer-verify-WvqO1wxjHP/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