./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex11.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ffd3e7-db5c-41a8-818d-a5903b273254/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ffd3e7-db5c-41a8-818d-a5903b273254/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ffd3e7-db5c-41a8-818d-a5903b273254/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ffd3e7-db5c-41a8-818d-a5903b273254/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex11.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ffd3e7-db5c-41a8-818d-a5903b273254/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ffd3e7-db5c-41a8-818d-a5903b273254/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a88778e925af9c1a64b7e94f7ff093b6408bd8b2e5fbc09d91ee3e64112df49e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:47:01,774 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:47:01,890 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ffd3e7-db5c-41a8-818d-a5903b273254/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-19 07:47:01,901 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:47:01,902 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:47:01,948 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:47:01,949 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:47:01,950 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:47:01,951 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:47:01,956 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:47:01,958 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:47:01,959 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:47:01,959 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:47:01,961 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:47:01,962 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:47:01,962 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:47:01,962 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:47:01,963 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:47:01,963 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:47:01,964 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:47:01,965 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:47:01,965 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:47:01,966 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:47:01,966 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:47:01,967 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:47:01,968 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:47:01,968 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:47:01,969 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:01,969 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:47:01,970 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:47:01,971 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:47:01,972 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:47:01,972 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:47:01,972 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:47:01,972 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:47:01,973 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:47:01,973 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:47:01,973 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:47:01,974 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_10ffd3e7-db5c-41a8-818d-a5903b273254/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ffd3e7-db5c-41a8-818d-a5903b273254/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a88778e925af9c1a64b7e94f7ff093b6408bd8b2e5fbc09d91ee3e64112df49e [2023-11-19 07:47:02,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:47:02,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:47:02,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:47:02,355 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:47:02,356 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:47:02,357 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ffd3e7-db5c-41a8-818d-a5903b273254/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex11.i [2023-11-19 07:47:05,575 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:47:05,814 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:47:05,814 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ffd3e7-db5c-41a8-818d-a5903b273254/sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex11.i [2023-11-19 07:47:05,823 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ffd3e7-db5c-41a8-818d-a5903b273254/bin/uautomizer-verify-uCwYo4JHxu/data/8fdaea66a/6a9afe7a4a75475d8a7a0938c99c8246/FLAG042b49fa9 [2023-11-19 07:47:05,842 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ffd3e7-db5c-41a8-818d-a5903b273254/bin/uautomizer-verify-uCwYo4JHxu/data/8fdaea66a/6a9afe7a4a75475d8a7a0938c99c8246 [2023-11-19 07:47:05,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:47:05,846 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:47:05,848 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:05,848 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:47:05,854 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:47:05,855 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:05" (1/1) ... [2023-11-19 07:47:05,856 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fc69496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:05, skipping insertion in model container [2023-11-19 07:47:05,856 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:05" (1/1) ... [2023-11-19 07:47:05,876 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:47:06,029 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:06,040 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:47:06,057 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:06,073 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:47:06,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:06 WrapperNode [2023-11-19 07:47:06,073 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:06,075 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:47:06,075 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:47:06,075 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:47:06,083 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:06" (1/1) ... [2023-11-19 07:47:06,091 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:06" (1/1) ... [2023-11-19 07:47:06,114 INFO L138 Inliner]: procedures = 11, calls = 20, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 41 [2023-11-19 07:47:06,114 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:47:06,115 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:47:06,115 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:47:06,115 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:47:06,126 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:06" (1/1) ... [2023-11-19 07:47:06,126 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:06" (1/1) ... [2023-11-19 07:47:06,128 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:06" (1/1) ... [2023-11-19 07:47:06,129 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:06" (1/1) ... [2023-11-19 07:47:06,134 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:06" (1/1) ... [2023-11-19 07:47:06,138 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:06" (1/1) ... [2023-11-19 07:47:06,139 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:06" (1/1) ... [2023-11-19 07:47:06,140 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:06" (1/1) ... [2023-11-19 07:47:06,143 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:47:06,144 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:47:06,144 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:47:06,144 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:47:06,145 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:06" (1/1) ... [2023-11-19 07:47:06,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:06,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ffd3e7-db5c-41a8-818d-a5903b273254/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:06,198 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ffd3e7-db5c-41a8-818d-a5903b273254/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:47:06,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ffd3e7-db5c-41a8-818d-a5903b273254/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:47:06,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:47:06,243 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2023-11-19 07:47:06,243 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2023-11-19 07:47:06,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:47:06,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:47:06,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:47:06,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:47:06,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:47:06,327 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:47:06,329 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:47:06,524 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:47:06,531 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:47:06,532 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:47:06,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:06 BoogieIcfgContainer [2023-11-19 07:47:06,535 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:47:06,538 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:47:06,538 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:47:06,542 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:47:06,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:47:05" (1/3) ... [2023-11-19 07:47:06,543 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a767bca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:06, skipping insertion in model container [2023-11-19 07:47:06,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:06" (2/3) ... [2023-11-19 07:47:06,543 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a767bca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:06, skipping insertion in model container [2023-11-19 07:47:06,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:06" (3/3) ... [2023-11-19 07:47:06,545 INFO L112 eAbstractionObserver]: Analyzing ICFG rec_malloc_ex11.i [2023-11-19 07:47:06,563 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:47:06,564 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-19 07:47:06,615 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:47:06,623 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;@e3d0d86, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:47:06,623 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-19 07:47:06,628 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 21 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:47:06,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 07:47:06,657 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:06,658 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:06,659 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 07:47:06,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:06,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1383666455, now seen corresponding path program 1 times [2023-11-19 07:47:06,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:06,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866807014] [2023-11-19 07:47:06,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:06,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:06,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:07,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:07,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:07,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866807014] [2023-11-19 07:47:07,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866807014] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:07,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:07,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:47:07,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284605936] [2023-11-19 07:47:07,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:07,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:47:07,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:07,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:47:07,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:47:07,136 INFO L87 Difference]: Start difference. First operand has 25 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 21 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:07,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:07,192 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2023-11-19 07:47:07,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:47:07,197 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-19 07:47:07,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:07,207 INFO L225 Difference]: With dead ends: 29 [2023-11-19 07:47:07,207 INFO L226 Difference]: Without dead ends: 20 [2023-11-19 07:47:07,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:47:07,214 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 2 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:07,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 60 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:47:07,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-11-19 07:47:07,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-11-19 07:47:07,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:47:07,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2023-11-19 07:47:07,255 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 9 [2023-11-19 07:47:07,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:07,256 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2023-11-19 07:47:07,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:07,257 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2023-11-19 07:47:07,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 07:47:07,259 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:07,259 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:07,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:47:07,262 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 07:47:07,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:07,267 INFO L85 PathProgramCache]: Analyzing trace with hash 56012893, now seen corresponding path program 1 times [2023-11-19 07:47:07,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:07,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619102668] [2023-11-19 07:47:07,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:07,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:07,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:07,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:07,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619102668] [2023-11-19 07:47:07,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619102668] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:07,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:07,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:47:07,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474635338] [2023-11-19 07:47:07,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:07,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:47:07,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:07,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:47:07,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:47:07,724 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:07,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:07,816 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2023-11-19 07:47:07,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:47:07,816 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-19 07:47:07,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:07,819 INFO L225 Difference]: With dead ends: 33 [2023-11-19 07:47:07,819 INFO L226 Difference]: Without dead ends: 32 [2023-11-19 07:47:07,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:47:07,821 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 9 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:07,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 53 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:47:07,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-11-19 07:47:07,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2023-11-19 07:47:07,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.263157894736842) internal successors, (24), 21 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:47:07,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2023-11-19 07:47:07,831 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 10 [2023-11-19 07:47:07,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:07,831 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2023-11-19 07:47:07,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:07,832 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2023-11-19 07:47:07,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 07:47:07,832 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:07,833 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:07,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:47:07,833 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 07:47:07,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:07,834 INFO L85 PathProgramCache]: Analyzing trace with hash -2006920769, now seen corresponding path program 1 times [2023-11-19 07:47:07,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:07,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422985577] [2023-11-19 07:47:07,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:07,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:07,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:07,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:47:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:08,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:08,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:08,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422985577] [2023-11-19 07:47:08,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422985577] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:08,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:08,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:47:08,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579442564] [2023-11-19 07:47:08,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:08,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:47:08,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:08,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:47:08,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:47:08,102 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:47:08,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:08,230 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2023-11-19 07:47:08,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:47:08,230 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-19 07:47:08,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:08,232 INFO L225 Difference]: With dead ends: 52 [2023-11-19 07:47:08,232 INFO L226 Difference]: Without dead ends: 26 [2023-11-19 07:47:08,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:47:08,238 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:08,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 71 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:47:08,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-19 07:47:08,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-11-19 07:47:08,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:47:08,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2023-11-19 07:47:08,245 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 12 [2023-11-19 07:47:08,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:08,245 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2023-11-19 07:47:08,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:47:08,246 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2023-11-19 07:47:08,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 07:47:08,246 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:08,246 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:08,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:47:08,247 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 07:47:08,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:08,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1709384494, now seen corresponding path program 1 times [2023-11-19 07:47:08,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:08,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860262238] [2023-11-19 07:47:08,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:08,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:08,413 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:08,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:08,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860262238] [2023-11-19 07:47:08,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860262238] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:08,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:08,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:47:08,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813960597] [2023-11-19 07:47:08,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:08,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:47:08,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:08,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:47:08,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:47:08,416 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:08,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:08,517 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2023-11-19 07:47:08,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:47:08,518 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-19 07:47:08,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:08,521 INFO L225 Difference]: With dead ends: 30 [2023-11-19 07:47:08,522 INFO L226 Difference]: Without dead ends: 29 [2023-11-19 07:47:08,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:47:08,531 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 7 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:08,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 69 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:47:08,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-11-19 07:47:08,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 23. [2023-11-19 07:47:08,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:47:08,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2023-11-19 07:47:08,543 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15 [2023-11-19 07:47:08,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:08,543 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2023-11-19 07:47:08,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:08,544 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2023-11-19 07:47:08,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-19 07:47:08,545 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:08,545 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:08,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:47:08,548 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 07:47:08,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:08,549 INFO L85 PathProgramCache]: Analyzing trace with hash 138034301, now seen corresponding path program 1 times [2023-11-19 07:47:08,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:08,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704693457] [2023-11-19 07:47:08,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:08,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:08,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:08,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:47:08,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:08,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:47:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:08,869 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:47:08,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:08,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704693457] [2023-11-19 07:47:08,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704693457] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:08,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:08,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:47:08,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573818543] [2023-11-19 07:47:08,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:08,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:47:08,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:08,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:47:08,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:47:08,872 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:47:08,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:08,965 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2023-11-19 07:47:08,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:47:08,965 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2023-11-19 07:47:08,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:08,966 INFO L225 Difference]: With dead ends: 31 [2023-11-19 07:47:08,966 INFO L226 Difference]: Without dead ends: 30 [2023-11-19 07:47:08,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:47:08,968 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:08,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 44 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:47:08,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-11-19 07:47:08,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2023-11-19 07:47:08,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 07:47:08,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2023-11-19 07:47:08,975 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 20 [2023-11-19 07:47:08,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:08,976 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2023-11-19 07:47:08,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:47:08,976 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2023-11-19 07:47:08,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 07:47:08,977 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:08,977 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:08,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:47:08,978 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 07:47:08,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:08,979 INFO L85 PathProgramCache]: Analyzing trace with hash -15903900, now seen corresponding path program 1 times [2023-11-19 07:47:08,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:08,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036145451] [2023-11-19 07:47:08,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:08,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:09,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:09,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:47:09,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:09,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:47:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:09,765 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:47:09,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:09,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036145451] [2023-11-19 07:47:09,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036145451] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:09,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300365719] [2023-11-19 07:47:09,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:09,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:09,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ffd3e7-db5c-41a8-818d-a5903b273254/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:09,770 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ffd3e7-db5c-41a8-818d-a5903b273254/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:09,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ffd3e7-db5c-41a8-818d-a5903b273254/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:47:09,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:09,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-19 07:47:09,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:09,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-19 07:47:09,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:47:09,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:47:09,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-19 07:47:10,011 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-19 07:47:10,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-19 07:47:10,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-19 07:47:10,204 INFO L349 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2023-11-19 07:47:10,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 28 [2023-11-19 07:47:10,416 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:10,416 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:10,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-19 07:47:11,299 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:11,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300365719] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:11,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:47:11,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 28 [2023-11-19 07:47:11,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680386465] [2023-11-19 07:47:11,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:11,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-19 07:47:11,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:11,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-19 07:47:11,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=719, Unknown=0, NotChecked=0, Total=812 [2023-11-19 07:47:11,304 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 29 states, 25 states have (on average 1.6) internal successors, (40), 25 states have internal predecessors, (40), 3 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-19 07:47:11,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:11,965 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2023-11-19 07:47:11,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-19 07:47:11,966 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 1.6) internal successors, (40), 25 states have internal predecessors, (40), 3 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 21 [2023-11-19 07:47:11,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:11,967 INFO L225 Difference]: With dead ends: 35 [2023-11-19 07:47:11,967 INFO L226 Difference]: Without dead ends: 34 [2023-11-19 07:47:11,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=171, Invalid=1389, Unknown=0, NotChecked=0, Total=1560 [2023-11-19 07:47:11,970 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 20 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:11,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 64 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:47:11,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-11-19 07:47:11,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2023-11-19 07:47:11,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 07:47:11,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2023-11-19 07:47:11,979 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 21 [2023-11-19 07:47:11,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:11,980 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2023-11-19 07:47:11,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 1.6) internal successors, (40), 25 states have internal predecessors, (40), 3 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-19 07:47:11,981 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2023-11-19 07:47:11,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-19 07:47:11,982 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:11,982 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-19 07:47:12,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ffd3e7-db5c-41a8-818d-a5903b273254/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:12,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ffd3e7-db5c-41a8-818d-a5903b273254/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 07:47:12,198 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 07:47:12,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:12,199 INFO L85 PathProgramCache]: Analyzing trace with hash 2020673055, now seen corresponding path program 1 times [2023-11-19 07:47:12,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:12,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484048000] [2023-11-19 07:47:12,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:12,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:12,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:47:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:12,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:47:12,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:12,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-19 07:47:12,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:12,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:47:12,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:12,708 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-19 07:47:12,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:12,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484048000] [2023-11-19 07:47:12,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484048000] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:12,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654851725] [2023-11-19 07:47:12,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:12,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:12,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ffd3e7-db5c-41a8-818d-a5903b273254/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:12,710 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ffd3e7-db5c-41a8-818d-a5903b273254/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:12,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ffd3e7-db5c-41a8-818d-a5903b273254/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:47:12,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:12,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-19 07:47:12,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:12,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:47:12,904 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2023-11-19 07:47:12,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2023-11-19 07:47:12,982 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:47:12,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 25 [2023-11-19 07:47:13,113 INFO L349 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2023-11-19 07:47:13,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 28 [2023-11-19 07:47:13,332 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 07:47:13,332 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:13,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-19 07:47:13,843 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-19 07:47:13,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654851725] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:13,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:47:13,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 14] total 20 [2023-11-19 07:47:13,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20975427] [2023-11-19 07:47:13,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:13,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:47:13,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:13,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:47:13,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=366, Unknown=1, NotChecked=0, Total=420 [2023-11-19 07:47:13,847 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 6 states, 4 states have (on average 5.0) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:47:13,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:13,946 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2023-11-19 07:47:13,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:47:13,947 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 5.0) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2023-11-19 07:47:13,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:13,948 INFO L225 Difference]: With dead ends: 28 [2023-11-19 07:47:13,948 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 07:47:13,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=402, Unknown=1, NotChecked=0, Total=462 [2023-11-19 07:47:13,950 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:13,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 53 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:47:13,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 07:47:13,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 07:47:13,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:13,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 07:47:13,952 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2023-11-19 07:47:13,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:13,953 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:47:13,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 5.0) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:47:13,953 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 07:47:13,953 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 07:47:13,956 INFO L805 garLoopResultBuilder]: Registering result SAFE for location recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2023-11-19 07:47:13,957 INFO L805 garLoopResultBuilder]: Registering result SAFE for location recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2023-11-19 07:47:13,957 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2023-11-19 07:47:13,958 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2023-11-19 07:47:13,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ffd3e7-db5c-41a8-818d-a5903b273254/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:14,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ffd3e7-db5c-41a8-818d-a5903b273254/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 07:47:14,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-19 07:47:14,323 INFO L899 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2023-11-19 07:47:14,323 INFO L899 garLoopResultBuilder]: For program point L16-1(line 16) no Hoare annotation was computed. [2023-11-19 07:47:14,324 INFO L899 garLoopResultBuilder]: For program point recFINAL(lines 8 22) no Hoare annotation was computed. [2023-11-19 07:47:14,324 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 8 22) the Hoare annotation is: (or (and (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) (< 2147483647 (select (select |old(#memory_int)| |rec_#in~op.base|) |rec_#in~op.offset|))) [2023-11-19 07:47:14,324 INFO L899 garLoopResultBuilder]: For program point L9(lines 9 13) no Hoare annotation was computed. [2023-11-19 07:47:14,324 INFO L899 garLoopResultBuilder]: For program point recEXIT(lines 8 22) no Hoare annotation was computed. [2023-11-19 07:47:14,325 INFO L899 garLoopResultBuilder]: For program point recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 16) no Hoare annotation was computed. [2023-11-19 07:47:14,325 INFO L899 garLoopResultBuilder]: For program point recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 16) no Hoare annotation was computed. [2023-11-19 07:47:14,325 INFO L895 garLoopResultBuilder]: At program point L19(line 19) the Hoare annotation is: (let ((.cse2 (select (select |old(#memory_int)| |rec_#in~op.base|) |rec_#in~op.offset|))) (or (let ((.cse0 (select (select |#memory_int| rec_~ip~0.base) rec_~ip~0.offset))) (and (<= 0 (+ .cse0 1)) (<= .cse0 2147483647) (let ((.cse1 (+ (select (select |#memory_int| |rec_#in~op.base|) |rec_#in~op.offset|) 1))) (or (< 0 .cse1) (= .cse1 0) (< (+ .cse2 1) 0))))) (< 2147483647 .cse2))) [2023-11-19 07:47:14,325 INFO L899 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2023-11-19 07:47:14,326 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 36) no Hoare annotation was computed. [2023-11-19 07:47:14,326 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-19 07:47:14,326 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-19 07:47:14,327 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse1 (select (select |#memory_int| |ULTIMATE.start_main_~qq~0#1.base|) |ULTIMATE.start_main_~qq~0#1.offset|)) (.cse0 (select (select |#memory_int| |ULTIMATE.start_main_~pp~0#1.base|) |ULTIMATE.start_main_~pp~0#1.offset|))) (and (or (< |ULTIMATE.start_main_#t~mem8#1| 2) (forall ((v_ArrVal_175 Int) (|v_ULTIMATE.start_main_~pp~0#1.base_9| Int)) (or (< v_ArrVal_175 0) (< 0 (+ (select (select (store |#memory_int| |v_ULTIMATE.start_main_~pp~0#1.base_9| (store (select |#memory_int| |v_ULTIMATE.start_main_~pp~0#1.base_9|) 0 v_ArrVal_175)) |ULTIMATE.start_main_~qq~0#1.base|) |ULTIMATE.start_main_~qq~0#1.offset|) 2147483648))))) (<= 0 (+ 2147483647 |ULTIMATE.start_main_#t~mem13#1|)) (<= .cse0 2147483647) (<= .cse1 2147483647) (<= |ULTIMATE.start_main_#t~mem13#1| 2147483647) (or (< 0 (+ .cse1 2147483648)) (< |ULTIMATE.start_main_#t~mem11#1| 0)) (<= 0 .cse0))) [2023-11-19 07:47:14,327 INFO L899 garLoopResultBuilder]: For program point L36-1(line 36) no Hoare annotation was computed. [2023-11-19 07:47:14,327 INFO L899 garLoopResultBuilder]: For program point L36-2(line 36) no Hoare annotation was computed. [2023-11-19 07:47:14,327 INFO L899 garLoopResultBuilder]: For program point L36-3(line 36) no Hoare annotation was computed. [2023-11-19 07:47:14,328 INFO L899 garLoopResultBuilder]: For program point L32(lines 32 34) no Hoare annotation was computed. [2023-11-19 07:47:14,328 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-11-19 07:47:14,329 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 36) no Hoare annotation was computed. [2023-11-19 07:47:14,329 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-11-19 07:47:14,329 INFO L899 garLoopResultBuilder]: For program point L28-1(lines 28 37) no Hoare annotation was computed. [2023-11-19 07:47:14,330 INFO L895 garLoopResultBuilder]: At program point L28-3(lines 28 37) the Hoare annotation is: (< (select (select |#memory_int| |ULTIMATE.start_main_~qq~0#1.base|) |ULTIMATE.start_main_~qq~0#1.offset|) 2147483648) [2023-11-19 07:47:14,330 INFO L899 garLoopResultBuilder]: For program point L28-4(lines 28 37) no Hoare annotation was computed. [2023-11-19 07:47:14,330 INFO L899 garLoopResultBuilder]: For program point L24(lines 24 41) no Hoare annotation was computed. [2023-11-19 07:47:14,335 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:14,338 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:47:14,352 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~qq~0!base][~qq~0!offset] could not be translated [2023-11-19 07:47:14,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:47:14 BoogieIcfgContainer [2023-11-19 07:47:14,357 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:47:14,358 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:47:14,358 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:47:14,358 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:47:14,360 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:06" (3/4) ... [2023-11-19 07:47:14,362 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 07:47:14,368 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure rec [2023-11-19 07:47:14,376 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2023-11-19 07:47:14,377 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 07:47:14,377 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-19 07:47:14,378 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 07:47:14,502 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ffd3e7-db5c-41a8-818d-a5903b273254/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:47:14,503 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ffd3e7-db5c-41a8-818d-a5903b273254/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 07:47:14,503 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:47:14,504 INFO L158 Benchmark]: Toolchain (without parser) took 8657.58ms. Allocated memory was 136.3MB in the beginning and 218.1MB in the end (delta: 81.8MB). Free memory was 92.0MB in the beginning and 161.3MB in the end (delta: -69.2MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. [2023-11-19 07:47:14,504 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 136.3MB. Free memory is still 111.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:47:14,504 INFO L158 Benchmark]: CACSL2BoogieTranslator took 226.29ms. Allocated memory is still 136.3MB. Free memory was 91.7MB in the beginning and 81.6MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 07:47:14,505 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.77ms. Allocated memory is still 136.3MB. Free memory was 81.6MB in the beginning and 80.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:47:14,506 INFO L158 Benchmark]: Boogie Preprocessor took 27.79ms. Allocated memory is still 136.3MB. Free memory was 80.1MB in the beginning and 79.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:47:14,506 INFO L158 Benchmark]: RCFGBuilder took 391.60ms. Allocated memory is still 136.3MB. Free memory was 79.0MB in the beginning and 67.6MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 07:47:14,507 INFO L158 Benchmark]: TraceAbstraction took 7819.34ms. Allocated memory was 136.3MB in the beginning and 218.1MB in the end (delta: 81.8MB). Free memory was 66.9MB in the beginning and 165.5MB in the end (delta: -98.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:47:14,507 INFO L158 Benchmark]: Witness Printer took 145.10ms. Allocated memory is still 218.1MB. Free memory was 165.5MB in the beginning and 161.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 07:47:14,513 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 136.3MB. Free memory is still 111.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 226.29ms. Allocated memory is still 136.3MB. Free memory was 91.7MB in the beginning and 81.6MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.77ms. Allocated memory is still 136.3MB. Free memory was 81.6MB in the beginning and 80.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.79ms. Allocated memory is still 136.3MB. Free memory was 80.1MB in the beginning and 79.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 391.60ms. Allocated memory is still 136.3MB. Free memory was 79.0MB in the beginning and 67.6MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 7819.34ms. Allocated memory was 136.3MB in the beginning and 218.1MB in the end (delta: 81.8MB). Free memory was 66.9MB in the beginning and 165.5MB in the end (delta: -98.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 145.10ms. Allocated memory is still 218.1MB. Free memory was 165.5MB in the beginning and 161.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[~qq~0!base][~qq~0!offset] could not be translated * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 16]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 36]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 36]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 7.7s, OverallIterations: 7, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 46 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 46 mSDsluCounter, 414 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 305 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 572 IncrementalHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 109 mSDtfsCounter, 572 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 194 GetRequests, 106 SyntacticMatches, 2 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=5, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 19 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 12 PreInvPairs, 16 NumberOfFragments, 147 HoareAnnotationTreeSize, 12 FomulaSimplifications, 87 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 80 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 186 NumberOfCodeBlocks, 186 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 235 ConstructedInterpolants, 8 QuantifiedInterpolants, 1287 SizeOfPredicates, 27 NumberOfNonLiveVariables, 361 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 11 InterpolantComputations, 6 PerfectInterpolantSequences, 106/122 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: null RESULT: Ultimate proved your program to be correct! [2023-11-19 07:47:14,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ffd3e7-db5c-41a8-818d-a5903b273254/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE