./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/Addition03-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/Addition03-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2b4726bd085117d6d28f7ec87f442bbec9d0d87c17bc39b8147695c8c5a6ec7b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 20:58:54,839 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 20:58:54,906 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-21 20:58:54,912 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 20:58:54,913 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 20:58:54,958 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 20:58:54,959 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 20:58:54,960 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 20:58:54,960 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 20:58:54,961 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 20:58:54,962 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 20:58:54,962 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 20:58:54,963 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 20:58:54,964 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 20:58:54,965 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 20:58:54,966 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 20:58:54,966 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 20:58:54,967 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 20:58:54,967 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 20:58:54,968 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 20:58:54,969 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 20:58:54,969 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 20:58:54,985 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 20:58:54,985 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 20:58:54,986 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 20:58:54,986 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 20:58:54,987 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 20:58:54,987 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 20:58:54,987 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 20:58:54,988 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 20:58:54,988 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 20:58:54,989 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 20:58:54,989 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 20:58:54,989 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 20:58:54,990 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 20:58:54,990 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 20:58:54,990 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 20:58:54,991 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 20:58:54,991 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 20:58:54,991 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 20:58:54,992 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 20:58:54,992 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 20:58:54,992 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 20:58:54,992 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 20:58:54,993 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_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b4726bd085117d6d28f7ec87f442bbec9d0d87c17bc39b8147695c8c5a6ec7b [2023-11-21 20:58:55,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 20:58:55,264 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 20:58:55,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 20:58:55,268 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 20:58:55,269 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 20:58:55,270 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/recursive/Addition03-1.c [2023-11-21 20:58:58,472 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 20:58:58,773 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 20:58:58,774 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/sv-benchmarks/c/recursive/Addition03-1.c [2023-11-21 20:58:58,782 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/data/f99568612/1c92bc5af5d84e0a91020c8d82836292/FLAG7c8894afe [2023-11-21 20:58:58,797 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/data/f99568612/1c92bc5af5d84e0a91020c8d82836292 [2023-11-21 20:58:58,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 20:58:58,802 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 20:58:58,804 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 20:58:58,804 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 20:58:58,810 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 20:58:58,811 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:58:58" (1/1) ... [2023-11-21 20:58:58,813 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44d3ec00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:58, skipping insertion in model container [2023-11-21 20:58:58,813 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:58:58" (1/1) ... [2023-11-21 20:58:58,839 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 20:58:58,994 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 20:58:59,007 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 20:58:59,022 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 20:58:59,037 INFO L206 MainTranslator]: Completed translation [2023-11-21 20:58:59,038 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:59 WrapperNode [2023-11-21 20:58:59,038 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 20:58:59,040 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 20:58:59,040 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 20:58:59,040 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 20:58:59,049 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:59" (1/1) ... [2023-11-21 20:58:59,055 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:59" (1/1) ... [2023-11-21 20:58:59,071 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 28 [2023-11-21 20:58:59,071 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 20:58:59,072 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 20:58:59,072 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 20:58:59,073 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 20:58:59,082 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:59" (1/1) ... [2023-11-21 20:58:59,083 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:59" (1/1) ... [2023-11-21 20:58:59,084 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:59" (1/1) ... [2023-11-21 20:58:59,094 INFO L187 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-21 20:58:59,094 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:59" (1/1) ... [2023-11-21 20:58:59,094 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:59" (1/1) ... [2023-11-21 20:58:59,098 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:59" (1/1) ... [2023-11-21 20:58:59,100 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:59" (1/1) ... [2023-11-21 20:58:59,101 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:59" (1/1) ... [2023-11-21 20:58:59,102 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:59" (1/1) ... [2023-11-21 20:58:59,103 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 20:58:59,108 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 20:58:59,109 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 20:58:59,109 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 20:58:59,110 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:59" (1/1) ... [2023-11-21 20:58:59,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 20:58:59,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:58:59,147 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 20:58:59,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 20:58:59,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 20:58:59,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 20:58:59,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 20:58:59,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 20:58:59,195 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2023-11-21 20:58:59,195 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2023-11-21 20:58:59,281 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 20:58:59,284 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 20:58:59,495 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 20:58:59,549 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 20:58:59,549 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 20:58:59,551 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:58:59 BoogieIcfgContainer [2023-11-21 20:58:59,551 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 20:58:59,555 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 20:58:59,555 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 20:58:59,559 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 20:58:59,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 08:58:58" (1/3) ... [2023-11-21 20:58:59,560 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cca5da5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:58:59, skipping insertion in model container [2023-11-21 20:58:59,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:59" (2/3) ... [2023-11-21 20:58:59,577 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cca5da5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:58:59, skipping insertion in model container [2023-11-21 20:58:59,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:58:59" (3/3) ... [2023-11-21 20:58:59,578 INFO L112 eAbstractionObserver]: Analyzing ICFG Addition03-1.c [2023-11-21 20:58:59,600 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 20:58:59,600 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-21 20:58:59,668 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 20:58:59,678 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6c59cbea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 20:58:59,679 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-21 20:58:59,683 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 25 states have internal predecessors, (28), 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) [2023-11-21 20:58:59,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 20:58:59,695 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:58:59,696 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 20:58:59,699 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-21 20:58:59,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:58:59,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1727975040, now seen corresponding path program 1 times [2023-11-21 20:58:59,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:58:59,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393509524] [2023-11-21 20:58:59,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:59,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:58:59,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:00,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:00,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:00,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393509524] [2023-11-21 20:59:00,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393509524] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:00,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:00,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 20:59:00,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763895442] [2023-11-21 20:59:00,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:00,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 20:59:00,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:00,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 20:59:00,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 20:59:00,151 INFO L87 Difference]: Start difference. First operand has 30 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 25 states have internal predecessors, (28), 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) Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:00,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:00,351 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2023-11-21 20:59:00,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 20:59:00,355 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-21 20:59:00,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:00,365 INFO L225 Difference]: With dead ends: 56 [2023-11-21 20:59:00,365 INFO L226 Difference]: Without dead ends: 44 [2023-11-21 20:59:00,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-21 20:59:00,375 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 45 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:00,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 88 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 20:59:00,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-21 20:59:00,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34. [2023-11-21 20:59:00,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 31 states have internal predecessors, (35), 4 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:00,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2023-11-21 20:59:00,434 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 6 [2023-11-21 20:59:00,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:00,435 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2023-11-21 20:59:00,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:00,436 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2023-11-21 20:59:00,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-21 20:59:00,438 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:00,438 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:00,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 20:59:00,439 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-21 20:59:00,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:00,440 INFO L85 PathProgramCache]: Analyzing trace with hash -2027618630, now seen corresponding path program 1 times [2023-11-21 20:59:00,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:00,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085559720] [2023-11-21 20:59:00,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:00,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:00,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:00,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:00,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:00,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085559720] [2023-11-21 20:59:00,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085559720] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:00,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:00,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 20:59:00,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077270696] [2023-11-21 20:59:00,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:00,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 20:59:00,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:00,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 20:59:00,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 20:59:00,526 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:00,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:00,584 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2023-11-21 20:59:00,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 20:59:00,585 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-21 20:59:00,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:00,587 INFO L225 Difference]: With dead ends: 66 [2023-11-21 20:59:00,587 INFO L226 Difference]: Without dead ends: 64 [2023-11-21 20:59:00,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-21 20:59:00,589 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 34 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:00,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 65 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 20:59:00,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-21 20:59:00,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2023-11-21 20:59:00,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 47 states have internal predecessors, (58), 5 states have call successors, (5), 4 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:00,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 63 transitions. [2023-11-21 20:59:00,603 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 63 transitions. Word has length 7 [2023-11-21 20:59:00,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:00,603 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 63 transitions. [2023-11-21 20:59:00,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:00,604 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 63 transitions. [2023-11-21 20:59:00,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 20:59:00,605 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:00,605 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:00,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 20:59:00,606 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-21 20:59:00,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:00,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1568331970, now seen corresponding path program 1 times [2023-11-21 20:59:00,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:00,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903458761] [2023-11-21 20:59:00,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:00,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:00,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:00,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:00,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903458761] [2023-11-21 20:59:00,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903458761] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:00,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:00,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 20:59:00,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838954487] [2023-11-21 20:59:00,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:00,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 20:59:00,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:00,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 20:59:00,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:59:00,657 INFO L87 Difference]: Start difference. First operand 52 states and 63 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:00,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:00,681 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2023-11-21 20:59:00,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 20:59:00,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-21 20:59:00,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:00,683 INFO L225 Difference]: With dead ends: 52 [2023-11-21 20:59:00,683 INFO L226 Difference]: Without dead ends: 51 [2023-11-21 20:59:00,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:59:00,685 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 5 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:00,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 27 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 20:59:00,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-21 20:59:00,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-11-21 20:59:00,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 39 states have (on average 1.435897435897436) internal successors, (56), 46 states have internal predecessors, (56), 5 states have call successors, (5), 4 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:00,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2023-11-21 20:59:00,697 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 8 [2023-11-21 20:59:00,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:00,698 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2023-11-21 20:59:00,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:00,698 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2023-11-21 20:59:00,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 20:59:00,699 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:00,699 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:00,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 20:59:00,700 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting additionErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-21 20:59:00,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:00,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1384179015, now seen corresponding path program 1 times [2023-11-21 20:59:00,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:00,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780112118] [2023-11-21 20:59:00,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:00,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:00,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:00,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:00,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:00,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780112118] [2023-11-21 20:59:00,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780112118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:00,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:00,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 20:59:00,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116017551] [2023-11-21 20:59:00,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:00,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 20:59:00,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:00,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 20:59:00,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 20:59:00,772 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:00,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:00,918 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2023-11-21 20:59:00,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 20:59:00,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-21 20:59:00,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:00,921 INFO L225 Difference]: With dead ends: 62 [2023-11-21 20:59:00,921 INFO L226 Difference]: Without dead ends: 61 [2023-11-21 20:59:00,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-21 20:59:00,928 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 35 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:00,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 43 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 20:59:00,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-21 20:59:00,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 51. [2023-11-21 20:59:00,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 39 states have (on average 1.4102564102564104) internal successors, (55), 46 states have internal predecessors, (55), 5 states have call successors, (5), 4 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:00,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2023-11-21 20:59:00,953 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 9 [2023-11-21 20:59:00,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:00,955 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2023-11-21 20:59:00,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:00,956 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2023-11-21 20:59:00,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 20:59:00,957 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:00,957 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:00,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 20:59:00,958 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting additionErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-21 20:59:00,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:00,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1373650876, now seen corresponding path program 1 times [2023-11-21 20:59:00,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:00,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72608638] [2023-11-21 20:59:00,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:00,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:00,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:01,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:01,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:01,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72608638] [2023-11-21 20:59:01,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72608638] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:01,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:01,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 20:59:01,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93998903] [2023-11-21 20:59:01,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:01,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 20:59:01,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:01,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 20:59:01,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 20:59:01,078 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:01,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:01,172 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions. [2023-11-21 20:59:01,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 20:59:01,174 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-21 20:59:01,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:01,175 INFO L225 Difference]: With dead ends: 63 [2023-11-21 20:59:01,178 INFO L226 Difference]: Without dead ends: 61 [2023-11-21 20:59:01,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-21 20:59:01,180 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 34 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:01,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 41 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 20:59:01,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-21 20:59:01,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 50. [2023-11-21 20:59:01,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 45 states have internal predecessors, (52), 5 states have call successors, (5), 4 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:01,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2023-11-21 20:59:01,209 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 9 [2023-11-21 20:59:01,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:01,210 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2023-11-21 20:59:01,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:01,210 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2023-11-21 20:59:01,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-21 20:59:01,211 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:01,212 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:01,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 20:59:01,212 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-21 20:59:01,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:01,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1747987274, now seen corresponding path program 1 times [2023-11-21 20:59:01,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:01,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457552924] [2023-11-21 20:59:01,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:01,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:01,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:01,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:01,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:01,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457552924] [2023-11-21 20:59:01,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457552924] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 20:59:01,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136888527] [2023-11-21 20:59:01,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:01,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 20:59:01,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:59:01,392 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 20:59:01,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 20:59:01,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:01,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 20:59:01,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:01,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:01,560 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:59:01,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136888527] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:01,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 20:59:01,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 10 [2023-11-21 20:59:01,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426540900] [2023-11-21 20:59:01,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:01,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 20:59:01,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:01,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 20:59:01,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-21 20:59:01,563 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:01,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:01,667 INFO L93 Difference]: Finished difference Result 73 states and 80 transitions. [2023-11-21 20:59:01,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 20:59:01,669 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-21 20:59:01,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:01,670 INFO L225 Difference]: With dead ends: 73 [2023-11-21 20:59:01,670 INFO L226 Difference]: Without dead ends: 51 [2023-11-21 20:59:01,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-21 20:59:01,673 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 15 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:01,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 43 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 20:59:01,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-21 20:59:01,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 41. [2023-11-21 20:59:01,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 36 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:01,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2023-11-21 20:59:01,695 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 15 [2023-11-21 20:59:01,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:01,696 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2023-11-21 20:59:01,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:01,696 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2023-11-21 20:59:01,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-21 20:59:01,697 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:01,697 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:01,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 20:59:01,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 20:59:01,899 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-21 20:59:01,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:01,900 INFO L85 PathProgramCache]: Analyzing trace with hash 2077822877, now seen corresponding path program 1 times [2023-11-21 20:59:01,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:01,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319931160] [2023-11-21 20:59:01,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:01,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:01,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:02,014 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:02,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:02,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319931160] [2023-11-21 20:59:02,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319931160] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 20:59:02,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660595841] [2023-11-21 20:59:02,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:02,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 20:59:02,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:59:02,021 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 20:59:02,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 20:59:02,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:02,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 20:59:02,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:02,109 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:02,109 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 20:59:02,189 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:02,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660595841] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 20:59:02,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 20:59:02,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-21 20:59:02,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826867547] [2023-11-21 20:59:02,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 20:59:02,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-21 20:59:02,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:02,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-21 20:59:02,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-21 20:59:02,192 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 12 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:02,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:02,346 INFO L93 Difference]: Finished difference Result 108 states and 119 transitions. [2023-11-21 20:59:02,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-21 20:59:02,347 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-21 20:59:02,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:02,348 INFO L225 Difference]: With dead ends: 108 [2023-11-21 20:59:02,348 INFO L226 Difference]: Without dead ends: 106 [2023-11-21 20:59:02,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-11-21 20:59:02,352 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 161 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:02,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 108 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 20:59:02,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-11-21 20:59:02,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 76. [2023-11-21 20:59:02,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 64 states have (on average 1.1875) internal successors, (76), 67 states have internal predecessors, (76), 8 states have call successors, (8), 8 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:02,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2023-11-21 20:59:02,369 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 15 [2023-11-21 20:59:02,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:02,370 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2023-11-21 20:59:02,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:02,370 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2023-11-21 20:59:02,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-21 20:59:02,373 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:02,373 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:02,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 20:59:02,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 20:59:02,574 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting additionErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-21 20:59:02,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:02,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1646980367, now seen corresponding path program 1 times [2023-11-21 20:59:02,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:02,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39116203] [2023-11-21 20:59:02,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:02,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:02,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:02,656 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:02,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:02,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39116203] [2023-11-21 20:59:02,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39116203] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 20:59:02,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770426850] [2023-11-21 20:59:02,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:02,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 20:59:02,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:59:02,658 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 20:59:02,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 20:59:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:02,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 20:59:02,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:02,755 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:02,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 20:59:02,841 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:02,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770426850] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 20:59:02,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 20:59:02,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-21 20:59:02,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254217725] [2023-11-21 20:59:02,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 20:59:02,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-21 20:59:02,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:02,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-21 20:59:02,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-21 20:59:02,845 INFO L87 Difference]: Start difference. First operand 76 states and 84 transitions. Second operand has 12 states, 9 states have (on average 3.111111111111111) internal successors, (28), 7 states have internal predecessors, (28), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:03,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:03,027 INFO L93 Difference]: Finished difference Result 178 states and 198 transitions. [2023-11-21 20:59:03,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-21 20:59:03,029 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 3.111111111111111) internal successors, (28), 7 states have internal predecessors, (28), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-21 20:59:03,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:03,030 INFO L225 Difference]: With dead ends: 178 [2023-11-21 20:59:03,031 INFO L226 Difference]: Without dead ends: 177 [2023-11-21 20:59:03,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2023-11-21 20:59:03,037 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 99 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:03,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 75 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 20:59:03,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-11-21 20:59:03,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 157. [2023-11-21 20:59:03,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 136 states have (on average 1.1544117647058822) internal successors, (157), 139 states have internal predecessors, (157), 17 states have call successors, (17), 17 states have call predecessors, (17), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:03,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 174 transitions. [2023-11-21 20:59:03,078 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 174 transitions. Word has length 16 [2023-11-21 20:59:03,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:03,079 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 174 transitions. [2023-11-21 20:59:03,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 3.111111111111111) internal successors, (28), 7 states have internal predecessors, (28), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:03,079 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 174 transitions. [2023-11-21 20:59:03,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-21 20:59:03,080 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:03,080 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:03,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 20:59:03,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 20:59:03,301 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting additionErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-21 20:59:03,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:03,302 INFO L85 PathProgramCache]: Analyzing trace with hash -361477782, now seen corresponding path program 1 times [2023-11-21 20:59:03,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:03,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121051491] [2023-11-21 20:59:03,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:03,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:03,365 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:03,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:03,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121051491] [2023-11-21 20:59:03,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121051491] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:03,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:03,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 20:59:03,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433365928] [2023-11-21 20:59:03,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:03,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 20:59:03,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:03,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 20:59:03,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 20:59:03,368 INFO L87 Difference]: Start difference. First operand 157 states and 174 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:03,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:03,425 INFO L93 Difference]: Finished difference Result 158 states and 174 transitions. [2023-11-21 20:59:03,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 20:59:03,426 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-21 20:59:03,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:03,427 INFO L225 Difference]: With dead ends: 158 [2023-11-21 20:59:03,427 INFO L226 Difference]: Without dead ends: 79 [2023-11-21 20:59:03,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-21 20:59:03,430 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 9 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:03,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 42 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 20:59:03,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-21 20:59:03,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2023-11-21 20:59:03,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 69 states have internal predecessors, (71), 9 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:03,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2023-11-21 20:59:03,457 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 17 [2023-11-21 20:59:03,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:03,457 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2023-11-21 20:59:03,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:03,457 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2023-11-21 20:59:03,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-21 20:59:03,459 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:03,459 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1] [2023-11-21 20:59:03,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 20:59:03,459 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-21 20:59:03,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:03,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1044918202, now seen corresponding path program 2 times [2023-11-21 20:59:03,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:03,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145349105] [2023-11-21 20:59:03,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:03,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:03,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:03,675 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:03,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:03,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145349105] [2023-11-21 20:59:03,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145349105] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 20:59:03,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496271544] [2023-11-21 20:59:03,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 20:59:03,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 20:59:03,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:59:03,678 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 20:59:03,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 20:59:03,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 20:59:03,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 20:59:03,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-21 20:59:03,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:03,809 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:03,809 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 20:59:04,034 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:04,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496271544] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 20:59:04,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 20:59:04,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2023-11-21 20:59:04,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344779794] [2023-11-21 20:59:04,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 20:59:04,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-21 20:59:04,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:04,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-21 20:59:04,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2023-11-21 20:59:04,037 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand has 24 states, 21 states have (on average 3.238095238095238) internal successors, (68), 13 states have internal predecessors, (68), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:04,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:04,309 INFO L93 Difference]: Finished difference Result 131 states and 137 transitions. [2023-11-21 20:59:04,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-21 20:59:04,310 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 3.238095238095238) internal successors, (68), 13 states have internal predecessors, (68), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-11-21 20:59:04,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:04,311 INFO L225 Difference]: With dead ends: 131 [2023-11-21 20:59:04,311 INFO L226 Difference]: Without dead ends: 130 [2023-11-21 20:59:04,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=311, Invalid=811, Unknown=0, NotChecked=0, Total=1122 [2023-11-21 20:59:04,313 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 225 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:04,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 106 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 20:59:04,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-11-21 20:59:04,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 127. [2023-11-21 20:59:04,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 110 states have (on average 1.0272727272727273) internal successors, (113), 111 states have internal predecessors, (113), 15 states have call successors, (15), 15 states have call predecessors, (15), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:04,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2023-11-21 20:59:04,332 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 39 [2023-11-21 20:59:04,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:04,333 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2023-11-21 20:59:04,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 3.238095238095238) internal successors, (68), 13 states have internal predecessors, (68), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:04,333 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2023-11-21 20:59:04,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-21 20:59:04,335 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:04,335 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1] [2023-11-21 20:59:04,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 20:59:04,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-21 20:59:04,556 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting additionErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-21 20:59:04,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:04,556 INFO L85 PathProgramCache]: Analyzing trace with hash -624848891, now seen corresponding path program 2 times [2023-11-21 20:59:04,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:04,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797816132] [2023-11-21 20:59:04,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:04,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:04,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:04,805 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:04,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:04,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797816132] [2023-11-21 20:59:04,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797816132] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 20:59:04,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707638227] [2023-11-21 20:59:04,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 20:59:04,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 20:59:04,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:59:04,813 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 20:59:04,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-21 20:59:04,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 20:59:04,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 20:59:04,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-21 20:59:04,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:04,988 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:04,989 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 20:59:05,248 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:05,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707638227] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 20:59:05,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 20:59:05,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2023-11-21 20:59:05,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241168104] [2023-11-21 20:59:05,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 20:59:05,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-21 20:59:05,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:05,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-21 20:59:05,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2023-11-21 20:59:05,252 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand has 24 states, 21 states have (on average 3.619047619047619) internal successors, (76), 13 states have internal predecessors, (76), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:05,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:05,515 INFO L93 Difference]: Finished difference Result 186 states and 192 transitions. [2023-11-21 20:59:05,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-21 20:59:05,515 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 3.619047619047619) internal successors, (76), 13 states have internal predecessors, (76), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-11-21 20:59:05,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:05,517 INFO L225 Difference]: With dead ends: 186 [2023-11-21 20:59:05,518 INFO L226 Difference]: Without dead ends: 185 [2023-11-21 20:59:05,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=311, Invalid=811, Unknown=0, NotChecked=0, Total=1122 [2023-11-21 20:59:05,520 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 215 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:05,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 137 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 20:59:05,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-11-21 20:59:05,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 181. [2023-11-21 20:59:05,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 158 states have (on average 1.018987341772152) internal successors, (161), 159 states have internal predecessors, (161), 21 states have call successors, (21), 21 states have call predecessors, (21), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:05,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 182 transitions. [2023-11-21 20:59:05,541 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 182 transitions. Word has length 43 [2023-11-21 20:59:05,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:05,542 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 182 transitions. [2023-11-21 20:59:05,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 3.619047619047619) internal successors, (76), 13 states have internal predecessors, (76), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:05,542 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 182 transitions. [2023-11-21 20:59:05,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-21 20:59:05,551 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:05,552 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1] [2023-11-21 20:59:05,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-21 20:59:05,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 20:59:05,773 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-21 20:59:05,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:05,773 INFO L85 PathProgramCache]: Analyzing trace with hash 40816792, now seen corresponding path program 3 times [2023-11-21 20:59:05,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:05,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452647857] [2023-11-21 20:59:05,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:05,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:06,367 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 0 proven. 410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:06,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:06,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452647857] [2023-11-21 20:59:06,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452647857] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 20:59:06,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180486984] [2023-11-21 20:59:06,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-21 20:59:06,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 20:59:06,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:59:06,385 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 20:59:06,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-21 20:59:06,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-11-21 20:59:06,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 20:59:06,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-21 20:59:06,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:06,633 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 0 proven. 410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:06,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 20:59:07,446 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 0 proven. 410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:07,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180486984] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 20:59:07,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 20:59:07,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2023-11-21 20:59:07,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401176028] [2023-11-21 20:59:07,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 20:59:07,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-21 20:59:07,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:07,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-21 20:59:07,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=556, Invalid=1700, Unknown=0, NotChecked=0, Total=2256 [2023-11-21 20:59:07,451 INFO L87 Difference]: Start difference. First operand 181 states and 182 transitions. Second operand has 48 states, 45 states have (on average 3.3777777777777778) internal successors, (152), 25 states have internal predecessors, (152), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:08,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:08,257 INFO L93 Difference]: Finished difference Result 281 states and 293 transitions. [2023-11-21 20:59:08,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-21 20:59:08,258 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 45 states have (on average 3.3777777777777778) internal successors, (152), 25 states have internal predecessors, (152), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-11-21 20:59:08,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:08,263 INFO L225 Difference]: With dead ends: 281 [2023-11-21 20:59:08,263 INFO L226 Difference]: Without dead ends: 280 [2023-11-21 20:59:08,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 924 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1337, Invalid=3493, Unknown=0, NotChecked=0, Total=4830 [2023-11-21 20:59:08,267 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 372 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:08,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 209 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 20:59:08,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-11-21 20:59:08,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 277. [2023-11-21 20:59:08,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 242 states have (on average 1.012396694214876) internal successors, (245), 243 states have internal predecessors, (245), 33 states have call successors, (33), 33 states have call predecessors, (33), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:08,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 278 transitions. [2023-11-21 20:59:08,316 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 278 transitions. Word has length 87 [2023-11-21 20:59:08,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:08,316 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 278 transitions. [2023-11-21 20:59:08,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 45 states have (on average 3.3777777777777778) internal successors, (152), 25 states have internal predecessors, (152), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:08,317 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 278 transitions. [2023-11-21 20:59:08,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-21 20:59:08,320 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:08,320 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1] [2023-11-21 20:59:08,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-21 20:59:08,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 20:59:08,550 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting additionErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-21 20:59:08,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:08,550 INFO L85 PathProgramCache]: Analyzing trace with hash -452603451, now seen corresponding path program 3 times [2023-11-21 20:59:08,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:08,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848192545] [2023-11-21 20:59:08,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:08,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:09,359 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 0 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:09,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:09,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848192545] [2023-11-21 20:59:09,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848192545] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 20:59:09,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236727855] [2023-11-21 20:59:09,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-21 20:59:09,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 20:59:09,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:59:09,365 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 20:59:09,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-21 20:59:09,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-11-21 20:59:09,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 20:59:09,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-21 20:59:09,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:09,661 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 0 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:09,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 20:59:10,543 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 0 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:10,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236727855] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 20:59:10,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 20:59:10,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2023-11-21 20:59:10,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468549228] [2023-11-21 20:59:10,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 20:59:10,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-21 20:59:10,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:10,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-21 20:59:10,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=556, Invalid=1700, Unknown=0, NotChecked=0, Total=2256 [2023-11-21 20:59:10,548 INFO L87 Difference]: Start difference. First operand 277 states and 278 transitions. Second operand has 48 states, 45 states have (on average 3.8222222222222224) internal successors, (172), 25 states have internal predecessors, (172), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:11,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:11,457 INFO L93 Difference]: Finished difference Result 390 states and 402 transitions. [2023-11-21 20:59:11,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-21 20:59:11,458 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 45 states have (on average 3.8222222222222224) internal successors, (172), 25 states have internal predecessors, (172), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-11-21 20:59:11,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:11,461 INFO L225 Difference]: With dead ends: 390 [2023-11-21 20:59:11,461 INFO L226 Difference]: Without dead ends: 389 [2023-11-21 20:59:11,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 924 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1337, Invalid=3493, Unknown=0, NotChecked=0, Total=4830 [2023-11-21 20:59:11,466 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 523 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:11,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 260 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 20:59:11,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2023-11-21 20:59:11,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 385. [2023-11-21 20:59:11,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 338 states have (on average 1.0088757396449703) internal successors, (341), 339 states have internal predecessors, (341), 45 states have call successors, (45), 45 states have call predecessors, (45), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:11,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 386 transitions. [2023-11-21 20:59:11,513 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 386 transitions. Word has length 97 [2023-11-21 20:59:11,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:11,515 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 386 transitions. [2023-11-21 20:59:11,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 45 states have (on average 3.8222222222222224) internal successors, (172), 25 states have internal predecessors, (172), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:11,516 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 386 transitions. [2023-11-21 20:59:11,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-11-21 20:59:11,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:11,525 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1] [2023-11-21 20:59:11,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-21 20:59:11,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-21 20:59:11,741 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-21 20:59:11,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:11,741 INFO L85 PathProgramCache]: Analyzing trace with hash -392245956, now seen corresponding path program 4 times [2023-11-21 20:59:11,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:11,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092924040] [2023-11-21 20:59:11,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:11,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:11,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:13,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 0 proven. 1958 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:13,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:13,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092924040] [2023-11-21 20:59:13,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092924040] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 20:59:13,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367967725] [2023-11-21 20:59:13,868 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-21 20:59:13,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 20:59:13,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:59:13,869 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 20:59:13,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-21 20:59:13,981 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-21 20:59:13,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 20:59:13,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-21 20:59:13,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:14,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 0 proven. 1958 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:14,342 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 20:59:16,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 0 proven. 1958 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:16,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367967725] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 20:59:16,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 20:59:16,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2023-11-21 20:59:16,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13123755] [2023-11-21 20:59:16,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 20:59:16,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-11-21 20:59:16,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:16,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-11-21 20:59:16,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2260, Invalid=6860, Unknown=0, NotChecked=0, Total=9120 [2023-11-21 20:59:16,970 INFO L87 Difference]: Start difference. First operand 385 states and 386 transitions. Second operand has 96 states, 93 states have (on average 3.4408602150537635) internal successors, (320), 49 states have internal predecessors, (320), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:19,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:19,543 INFO L93 Difference]: Finished difference Result 581 states and 605 transitions. [2023-11-21 20:59:19,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-11-21 20:59:19,546 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 93 states have (on average 3.4408602150537635) internal successors, (320), 49 states have internal predecessors, (320), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2023-11-21 20:59:19,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:19,550 INFO L225 Difference]: With dead ends: 581 [2023-11-21 20:59:19,550 INFO L226 Difference]: Without dead ends: 580 [2023-11-21 20:59:19,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4140 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=5549, Invalid=14473, Unknown=0, NotChecked=0, Total=20022 [2023-11-21 20:59:19,560 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 1226 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:19,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1226 Valid, 409 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 20:59:19,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2023-11-21 20:59:19,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 577. [2023-11-21 20:59:19,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 506 states have (on average 1.0059288537549407) internal successors, (509), 507 states have internal predecessors, (509), 69 states have call successors, (69), 69 states have call predecessors, (69), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:19,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 578 transitions. [2023-11-21 20:59:19,613 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 578 transitions. Word has length 183 [2023-11-21 20:59:19,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:19,614 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 578 transitions. [2023-11-21 20:59:19,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 93 states have (on average 3.4408602150537635) internal successors, (320), 49 states have internal predecessors, (320), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:19,614 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 578 transitions. [2023-11-21 20:59:19,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-11-21 20:59:19,618 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:19,618 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 22, 22, 22, 1, 1, 1] [2023-11-21 20:59:19,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-21 20:59:19,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-21 20:59:19,832 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting additionErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-21 20:59:19,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:19,833 INFO L85 PathProgramCache]: Analyzing trace with hash -176560827, now seen corresponding path program 4 times [2023-11-21 20:59:19,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:19,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383444901] [2023-11-21 20:59:19,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:19,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:21,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2189 backedges. 0 proven. 2189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:21,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:21,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383444901] [2023-11-21 20:59:21,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383444901] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 20:59:21,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696414908] [2023-11-21 20:59:21,830 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-21 20:59:21,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 20:59:21,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:59:21,831 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 20:59:21,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-21 20:59:21,977 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-21 20:59:21,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 20:59:21,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-21 20:59:21,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:22,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2189 backedges. 0 proven. 2189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:22,300 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 20:59:24,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2189 backedges. 0 proven. 2189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:24,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696414908] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 20:59:24,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 20:59:24,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2023-11-21 20:59:24,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843891817] [2023-11-21 20:59:24,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 20:59:24,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-11-21 20:59:24,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:24,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-11-21 20:59:24,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2260, Invalid=6860, Unknown=0, NotChecked=0, Total=9120 [2023-11-21 20:59:24,937 INFO L87 Difference]: Start difference. First operand 577 states and 578 transitions. Second operand has 96 states, 93 states have (on average 3.913978494623656) internal successors, (364), 49 states have internal predecessors, (364), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:27,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:27,549 INFO L93 Difference]: Finished difference Result 798 states and 822 transitions. [2023-11-21 20:59:27,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-11-21 20:59:27,550 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 93 states have (on average 3.913978494623656) internal successors, (364), 49 states have internal predecessors, (364), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 205 [2023-11-21 20:59:27,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:27,555 INFO L225 Difference]: With dead ends: 798 [2023-11-21 20:59:27,555 INFO L226 Difference]: Without dead ends: 797 [2023-11-21 20:59:27,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4140 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=5549, Invalid=14473, Unknown=0, NotChecked=0, Total=20022 [2023-11-21 20:59:27,563 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 1283 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1283 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:27,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1283 Valid, 492 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 20:59:27,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2023-11-21 20:59:27,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 793. [2023-11-21 20:59:27,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 698 states have (on average 1.004297994269341) internal successors, (701), 699 states have internal predecessors, (701), 93 states have call successors, (93), 93 states have call predecessors, (93), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:27,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 794 transitions. [2023-11-21 20:59:27,631 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 794 transitions. Word has length 205 [2023-11-21 20:59:27,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:27,632 INFO L495 AbstractCegarLoop]: Abstraction has 793 states and 794 transitions. [2023-11-21 20:59:27,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 93 states have (on average 3.913978494623656) internal successors, (364), 49 states have internal predecessors, (364), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:27,632 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 794 transitions. [2023-11-21 20:59:27,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2023-11-21 20:59:27,640 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:27,640 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 46, 46, 46, 46, 1, 1, 1] [2023-11-21 20:59:27,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-21 20:59:27,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-21 20:59:27,862 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-21 20:59:27,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:27,863 INFO L85 PathProgramCache]: Analyzing trace with hash -152652156, now seen corresponding path program 5 times [2023-11-21 20:59:27,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:27,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973758775] [2023-11-21 20:59:27,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:27,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:34,387 INFO L134 CoverageAnalysis]: Checked inductivity of 8510 backedges. 0 proven. 8510 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:34,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:34,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973758775] [2023-11-21 20:59:34,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973758775] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 20:59:34,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316346402] [2023-11-21 20:59:34,388 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-21 20:59:34,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 20:59:34,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:59:34,389 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 20:59:34,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a582c211-3423-4bb0-b732-414dadbe5386/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-21 20:59:34,672 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2023-11-21 20:59:34,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 20:59:34,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 96 conjunts are in the unsatisfiable core [2023-11-21 20:59:34,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:35,309 INFO L134 CoverageAnalysis]: Checked inductivity of 8510 backedges. 0 proven. 8510 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:35,309 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 20:59:43,774 INFO L134 CoverageAnalysis]: Checked inductivity of 8510 backedges. 0 proven. 8510 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:43,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316346402] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 20:59:43,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 20:59:43,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2023-11-21 20:59:43,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617543928] [2023-11-21 20:59:43,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 20:59:43,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2023-11-21 20:59:43,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:43,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2023-11-21 20:59:43,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9124, Invalid=27548, Unknown=0, NotChecked=0, Total=36672 [2023-11-21 20:59:43,789 INFO L87 Difference]: Start difference. First operand 793 states and 794 transitions. Second operand has 192 states, 189 states have (on average 3.4708994708994707) internal successors, (656), 97 states have internal predecessors, (656), 94 states have call successors, (94), 94 states have call predecessors, (94), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)