./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/sum_natnum.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/sum_natnum.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ff2ea40d6d25fb86e36a6b6b626bedee46fbbe211877b096a26da0b150125568 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 07:21:35,842 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 07:21:35,922 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 07:21:35,926 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 07:21:35,927 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 07:21:35,948 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 07:21:35,949 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 07:21:35,949 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 07:21:35,950 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 07:21:35,951 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 07:21:35,951 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 07:21:35,952 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 07:21:35,952 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 07:21:35,953 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 07:21:35,953 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 07:21:35,953 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 07:21:35,954 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 07:21:35,954 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 07:21:35,955 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 07:21:35,955 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 07:21:35,956 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 07:21:35,957 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 07:21:35,957 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 07:21:35,958 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 07:21:35,958 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 07:21:35,959 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 07:21:35,959 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 07:21:35,959 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 07:21:35,960 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 07:21:35,960 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 07:21:35,961 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 07:21:35,961 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 07:21:35,965 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 07:21:35,966 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 07:21:35,966 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 07:21:35,966 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 07:21:35,967 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 07:21:35,967 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 07:21:35,967 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:21:35,968 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 07:21:35,968 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 07:21:35,968 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 07:21:35,969 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 07:21:35,969 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 07:21:35,969 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 07:21:35,970 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 07:21:35,970 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 07:21:35,970 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff2ea40d6d25fb86e36a6b6b626bedee46fbbe211877b096a26da0b150125568 [2024-11-09 07:21:36,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 07:21:36,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 07:21:36,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 07:21:36,263 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 07:21:36,264 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 07:21:36,265 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/loops-crafted-1/sum_natnum.c Unable to find full path for "g++" [2024-11-09 07:21:38,321 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 07:21:38,564 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 07:21:38,564 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/sv-benchmarks/c/loops-crafted-1/sum_natnum.c [2024-11-09 07:21:38,572 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/data/8b173d9d9/65a880530bf646c3bc197d4096c045bf/FLAG4de8fc263 [2024-11-09 07:21:38,590 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/data/8b173d9d9/65a880530bf646c3bc197d4096c045bf [2024-11-09 07:21:38,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 07:21:38,594 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 07:21:38,596 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 07:21:38,596 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 07:21:38,603 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 07:21:38,603 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:21:38" (1/1) ... [2024-11-09 07:21:38,605 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e43d89c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:38, skipping insertion in model container [2024-11-09 07:21:38,605 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:21:38" (1/1) ... [2024-11-09 07:21:38,628 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:21:38,827 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/sv-benchmarks/c/loops-crafted-1/sum_natnum.c[458,471] [2024-11-09 07:21:38,847 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:21:38,863 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 07:21:38,884 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/sv-benchmarks/c/loops-crafted-1/sum_natnum.c[458,471] [2024-11-09 07:21:38,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:21:38,914 INFO L204 MainTranslator]: Completed translation [2024-11-09 07:21:38,914 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:38 WrapperNode [2024-11-09 07:21:38,915 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 07:21:38,916 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 07:21:38,917 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 07:21:38,917 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 07:21:38,926 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:38" (1/1) ... [2024-11-09 07:21:38,935 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:38" (1/1) ... [2024-11-09 07:21:38,958 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 28 [2024-11-09 07:21:38,959 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 07:21:38,960 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 07:21:38,960 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 07:21:38,960 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 07:21:38,969 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:38" (1/1) ... [2024-11-09 07:21:38,969 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:38" (1/1) ... [2024-11-09 07:21:38,970 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:38" (1/1) ... [2024-11-09 07:21:38,970 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:38" (1/1) ... [2024-11-09 07:21:38,974 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:38" (1/1) ... [2024-11-09 07:21:38,978 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:38" (1/1) ... [2024-11-09 07:21:38,979 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:38" (1/1) ... [2024-11-09 07:21:38,980 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:38" (1/1) ... [2024-11-09 07:21:38,981 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 07:21:38,982 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 07:21:38,983 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 07:21:38,983 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 07:21:38,984 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:38" (1/1) ... [2024-11-09 07:21:39,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:21:39,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:21:39,039 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 07:21:39,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 07:21:39,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 07:21:39,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 07:21:39,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 07:21:39,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 07:21:39,168 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 07:21:39,171 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 07:21:41,311 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-09 07:21:41,311 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 07:21:41,355 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 07:21:41,356 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 07:21:41,356 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:21:41 BoogieIcfgContainer [2024-11-09 07:21:41,356 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 07:21:41,360 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 07:21:41,385 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 07:21:41,390 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 07:21:41,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:21:38" (1/3) ... [2024-11-09 07:21:41,398 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f7440f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:21:41, skipping insertion in model container [2024-11-09 07:21:41,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:38" (2/3) ... [2024-11-09 07:21:41,399 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f7440f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:21:41, skipping insertion in model container [2024-11-09 07:21:41,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:21:41" (3/3) ... [2024-11-09 07:21:41,403 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_natnum.c [2024-11-09 07:21:41,428 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 07:21:41,430 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 07:21:41,503 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 07:21:41,515 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, 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;@52433057, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 07:21:41,516 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 07:21:41,520 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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) [2024-11-09 07:21:41,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-09 07:21:41,528 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:21:41,528 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 07:21:41,529 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:21:41,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:21:41,535 INFO L85 PathProgramCache]: Analyzing trace with hash 57660578, now seen corresponding path program 1 times [2024-11-09 07:21:41,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:21:41,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272053494] [2024-11-09 07:21:41,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:41,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:21:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:41,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:41,869 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:21:41,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272053494] [2024-11-09 07:21:41,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272053494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:21:41,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:21:41,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:21:41,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763728583] [2024-11-09 07:21:41,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:21:41,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:21:41,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:21:41,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:21:41,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:21:41,915 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) [2024-11-09 07:21:41,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:21:41,967 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2024-11-09 07:21:41,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:21:41,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) Word has length 5 [2024-11-09 07:21:41,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:21:41,985 INFO L225 Difference]: With dead ends: 17 [2024-11-09 07:21:41,985 INFO L226 Difference]: Without dead ends: 9 [2024-11-09 07:21:41,990 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:21:41,995 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:21:41,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 9 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:21:42,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2024-11-09 07:21:42,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2024-11-09 07:21:42,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 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) [2024-11-09 07:21:42,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2024-11-09 07:21:42,029 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 5 [2024-11-09 07:21:42,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:21:42,029 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2024-11-09 07:21:42,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) [2024-11-09 07:21:42,030 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2024-11-09 07:21:42,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 07:21:42,030 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:21:42,031 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:21:42,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 07:21:42,031 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:21:42,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:21:42,032 INFO L85 PathProgramCache]: Analyzing trace with hash -627010713, now seen corresponding path program 1 times [2024-11-09 07:21:42,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:21:42,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431645361] [2024-11-09 07:21:42,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:42,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:21:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:42,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:42,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:21:42,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431645361] [2024-11-09 07:21:42,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431645361] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:21:42,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566307578] [2024-11-09 07:21:42,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:42,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:21:42,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:21:42,241 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:21:42,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 07:21:42,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:42,328 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 07:21:42,334 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:21:42,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:42,458 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:21:42,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:42,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566307578] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:21:42,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [962359345] [2024-11-09 07:21:42,578 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 07:21:42,578 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:21:42,589 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:21:42,598 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:21:42,598 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:21:43,435 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:21:44,419 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '91#(exists ((|v_ULTIMATE.start_main_~i~0#1_23| Int) (|v_ULTIMATE.start_main_~sum~0#1_19| Int)) (and (<= 1 |#StackHeapBarrier|) (<= 40000 |v_ULTIMATE.start_main_~sum~0#1_19|) (not (= (mod |v_ULTIMATE.start_main_~sum~0#1_19| 18446744073709551616) 800020000)) (= ~SIZE~0 40000) (= |v_ULTIMATE.start_main_~i~0#1_23| 40000)))' at error location [2024-11-09 07:21:44,419 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:21:44,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:21:44,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-09 07:21:44,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118314454] [2024-11-09 07:21:44,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:21:44,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 07:21:44,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:21:44,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 07:21:44,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-09 07:21:44,424 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 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) [2024-11-09 07:21:44,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:21:44,483 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2024-11-09 07:21:44,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:21:44,485 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 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) Word has length 7 [2024-11-09 07:21:44,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:21:44,486 INFO L225 Difference]: With dead ends: 18 [2024-11-09 07:21:44,486 INFO L226 Difference]: Without dead ends: 14 [2024-11-09 07:21:44,486 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-09 07:21:44,488 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:21:44,491 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:21:44,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-11-09 07:21:44,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2024-11-09 07:21:44,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 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) [2024-11-09 07:21:44,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2024-11-09 07:21:44,499 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 7 [2024-11-09 07:21:44,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:21:44,500 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2024-11-09 07:21:44,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 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) [2024-11-09 07:21:44,500 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2024-11-09 07:21:44,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 07:21:44,501 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:21:44,501 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1] [2024-11-09 07:21:44,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 07:21:44,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:21:44,703 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:21:44,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:21:44,703 INFO L85 PathProgramCache]: Analyzing trace with hash 812408886, now seen corresponding path program 2 times [2024-11-09 07:21:44,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:21:44,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436153751] [2024-11-09 07:21:44,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:44,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:21:44,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:44,973 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:44,975 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:21:44,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436153751] [2024-11-09 07:21:44,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436153751] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:21:44,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436834394] [2024-11-09 07:21:44,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 07:21:44,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:21:44,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:21:44,982 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:21:44,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 07:21:45,052 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-09 07:21:45,053 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:21:45,054 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 07:21:45,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:21:45,197 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:45,197 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:21:45,326 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:45,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436834394] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:21:45,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [953863866] [2024-11-09 07:21:45,329 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 07:21:45,330 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:21:45,330 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:21:45,330 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:21:45,331 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:21:45,703 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:21:46,455 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '227#(exists ((|v_ULTIMATE.start_main_~i~0#1_37| Int) (|v_ULTIMATE.start_main_~sum~0#1_28| Int)) (and (<= 1 |#StackHeapBarrier|) (= ~SIZE~0 40000) (= |v_ULTIMATE.start_main_~i~0#1_37| 40000) (<= 40000 |v_ULTIMATE.start_main_~sum~0#1_28|) (not (= 800020000 (mod |v_ULTIMATE.start_main_~sum~0#1_28| 18446744073709551616)))))' at error location [2024-11-09 07:21:46,456 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:21:46,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:21:46,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-11-09 07:21:46,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257665633] [2024-11-09 07:21:46,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:21:46,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 07:21:46,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:21:46,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 07:21:46,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2024-11-09 07:21:46,460 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 16 states have internal predecessors, (33), 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) [2024-11-09 07:21:46,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:21:46,533 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2024-11-09 07:21:46,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 07:21:46,534 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 16 states have internal predecessors, (33), 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) Word has length 13 [2024-11-09 07:21:46,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:21:46,534 INFO L225 Difference]: With dead ends: 30 [2024-11-09 07:21:46,535 INFO L226 Difference]: Without dead ends: 26 [2024-11-09 07:21:46,535 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2024-11-09 07:21:46,537 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:21:46,538 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 10 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:21:46,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-09 07:21:46,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-09 07:21:46,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 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) [2024-11-09 07:21:46,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2024-11-09 07:21:46,544 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 13 [2024-11-09 07:21:46,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:21:46,545 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2024-11-09 07:21:46,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 16 states have internal predecessors, (33), 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) [2024-11-09 07:21:46,545 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2024-11-09 07:21:46,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 07:21:46,546 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:21:46,546 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1] [2024-11-09 07:21:46,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 07:21:46,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:21:46,751 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:21:46,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:21:46,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1103438868, now seen corresponding path program 3 times [2024-11-09 07:21:46,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:21:46,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108216327] [2024-11-09 07:21:46,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:46,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:21:46,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:47,207 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:47,207 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:21:47,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108216327] [2024-11-09 07:21:47,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108216327] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:21:47,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634537599] [2024-11-09 07:21:47,211 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 07:21:47,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:21:47,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:21:47,214 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:21:47,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 07:21:47,283 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 07:21:47,283 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:21:47,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 07:21:47,286 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:21:47,625 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:47,625 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:21:48,013 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:48,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634537599] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:21:48,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [133701884] [2024-11-09 07:21:48,016 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 07:21:48,016 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:21:48,018 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:21:48,019 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:21:48,019 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:21:48,251 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:21:49,010 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '489#(exists ((|v_ULTIMATE.start_main_~sum~0#1_43| Int) (|v_ULTIMATE.start_main_~i~0#1_63| Int)) (and (<= 1 |#StackHeapBarrier|) (not (= 800020000 (mod |v_ULTIMATE.start_main_~sum~0#1_43| 18446744073709551616))) (<= 40000 |v_ULTIMATE.start_main_~sum~0#1_43|) (= ~SIZE~0 40000) (= |v_ULTIMATE.start_main_~i~0#1_63| 40000)))' at error location [2024-11-09 07:21:49,010 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:21:49,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:21:49,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2024-11-09 07:21:49,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606987231] [2024-11-09 07:21:49,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:21:49,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-09 07:21:49,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:21:49,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-09 07:21:49,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=995, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 07:21:49,015 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand has 35 states, 35 states have (on average 1.9714285714285715) internal successors, (69), 34 states have internal predecessors, (69), 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) [2024-11-09 07:21:49,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:21:49,260 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2024-11-09 07:21:49,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 07:21:49,261 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.9714285714285715) internal successors, (69), 34 states have internal predecessors, (69), 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) Word has length 25 [2024-11-09 07:21:49,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:21:49,262 INFO L225 Difference]: With dead ends: 54 [2024-11-09 07:21:49,262 INFO L226 Difference]: Without dead ends: 50 [2024-11-09 07:21:49,263 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=565, Invalid=995, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 07:21:49,265 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:21:49,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 10 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:21:49,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-09 07:21:49,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-09 07:21:49,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.0204081632653061) internal successors, (50), 49 states have internal predecessors, (50), 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) [2024-11-09 07:21:49,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2024-11-09 07:21:49,276 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 25 [2024-11-09 07:21:49,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:21:49,277 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2024-11-09 07:21:49,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.9714285714285715) internal successors, (69), 34 states have internal predecessors, (69), 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) [2024-11-09 07:21:49,277 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2024-11-09 07:21:49,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 07:21:49,279 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:21:49,279 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1] [2024-11-09 07:21:49,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 07:21:49,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:21:49,485 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:21:49,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:21:49,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1466723120, now seen corresponding path program 4 times [2024-11-09 07:21:49,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:21:49,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767497498] [2024-11-09 07:21:49,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:49,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:21:49,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:50,428 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:50,429 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:21:50,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767497498] [2024-11-09 07:21:50,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767497498] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:21:50,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793094028] [2024-11-09 07:21:50,430 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 07:21:50,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:21:50,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:21:50,432 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:21:50,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 07:21:50,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:50,518 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 07:21:50,521 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:21:51,362 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:51,362 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:21:52,569 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:52,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793094028] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:21:52,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [936676910] [2024-11-09 07:21:52,579 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 07:21:52,579 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:21:52,579 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:21:52,579 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:21:52,580 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:21:52,804 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:21:53,682 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1003#(exists ((|v_ULTIMATE.start_main_~i~0#1_113| Int) (|v_ULTIMATE.start_main_~sum~0#1_70| Int)) (and (<= 40000 |v_ULTIMATE.start_main_~sum~0#1_70|) (<= 1 |#StackHeapBarrier|) (not (= 800020000 (mod |v_ULTIMATE.start_main_~sum~0#1_70| 18446744073709551616))) (= ~SIZE~0 40000) (= |v_ULTIMATE.start_main_~i~0#1_113| 40000)))' at error location [2024-11-09 07:21:53,683 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:21:53,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:21:53,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 70 [2024-11-09 07:21:53,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598401273] [2024-11-09 07:21:53,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:21:53,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-09 07:21:53,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:21:53,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-09 07:21:53,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2269, Invalid=3431, Unknown=0, NotChecked=0, Total=5700 [2024-11-09 07:21:53,690 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 71 states, 71 states have (on average 1.9859154929577465) internal successors, (141), 70 states have internal predecessors, (141), 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) [2024-11-09 07:21:55,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:21:57,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:21:59,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:22:01,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:22:03,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:22:06,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:22:08,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:22:10,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:22:12,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:22:14,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:22:16,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:22:18,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:22:20,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:22:22,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:22:24,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:22:26,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:22:28,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:22:30,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:22:32,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:22:34,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:22:36,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:22:38,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 07:22:38,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:22:38,048 INFO L93 Difference]: Finished difference Result 102 states and 125 transitions. [2024-11-09 07:22:38,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-09 07:22:38,050 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.9859154929577465) internal successors, (141), 70 states have internal predecessors, (141), 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) Word has length 49 [2024-11-09 07:22:38,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:22:38,052 INFO L225 Difference]: With dead ends: 102 [2024-11-09 07:22:38,052 INFO L226 Difference]: Without dead ends: 98 [2024-11-09 07:22:38,055 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2612 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2269, Invalid=3431, Unknown=0, NotChecked=0, Total=5700 [2024-11-09 07:22:38,056 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 2 mSolverCounterUnsat, 22 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 22 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:22:38,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 16 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 121 Invalid, 22 Unknown, 0 Unchecked, 44.3s Time] [2024-11-09 07:22:38,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-09 07:22:38,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2024-11-09 07:22:38,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.0103092783505154) internal successors, (98), 97 states have internal predecessors, (98), 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) [2024-11-09 07:22:38,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2024-11-09 07:22:38,077 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 49 [2024-11-09 07:22:38,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:22:38,077 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2024-11-09 07:22:38,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.9859154929577465) internal successors, (141), 70 states have internal predecessors, (141), 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) [2024-11-09 07:22:38,078 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2024-11-09 07:22:38,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-09 07:22:38,082 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:22:38,082 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1] [2024-11-09 07:22:38,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 07:22:38,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:22:38,283 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:22:38,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:22:38,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1774590536, now seen corresponding path program 5 times [2024-11-09 07:22:38,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:22:38,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948369893] [2024-11-09 07:22:38,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:22:38,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:22:38,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:22:41,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:22:41,412 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:22:41,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948369893] [2024-11-09 07:22:41,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948369893] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:22:41,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457284990] [2024-11-09 07:22:41,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 07:22:41,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:22:41,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:22:41,415 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:22:41,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 07:22:41,571 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2024-11-09 07:22:41,571 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:22:41,573 INFO L255 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-09 07:22:41,578 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:22:43,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:22:43,844 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:22:47,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:22:47,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457284990] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:22:47,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [626468345] [2024-11-09 07:22:47,962 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 07:22:47,962 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:22:47,963 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:22:47,963 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:22:47,963 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:22:48,170 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:22:49,097 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2021#(exists ((|v_ULTIMATE.start_main_~sum~0#1_121| Int) (|v_ULTIMATE.start_main_~i~0#1_211| Int)) (and (<= 1 |#StackHeapBarrier|) (= |v_ULTIMATE.start_main_~i~0#1_211| 40000) (<= 40000 |v_ULTIMATE.start_main_~sum~0#1_121|) (= ~SIZE~0 40000) (not (= (mod |v_ULTIMATE.start_main_~sum~0#1_121| 18446744073709551616) 800020000))))' at error location [2024-11-09 07:22:49,097 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:22:49,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:22:49,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 142 [2024-11-09 07:22:49,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665309804] [2024-11-09 07:22:49,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:22:49,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 143 states [2024-11-09 07:22:49,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:22:49,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2024-11-09 07:22:49,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9133, Invalid=12623, Unknown=0, NotChecked=0, Total=21756 [2024-11-09 07:22:49,115 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand has 143 states, 143 states have (on average 1.993006993006993) internal successors, (285), 142 states have internal predecessors, (285), 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) [2024-11-09 07:22:49,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:22:49,809 INFO L93 Difference]: Finished difference Result 198 states and 245 transitions. [2024-11-09 07:22:49,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-09 07:22:49,811 INFO L78 Accepts]: Start accepts. Automaton has has 143 states, 143 states have (on average 1.993006993006993) internal successors, (285), 142 states have internal predecessors, (285), 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) Word has length 97 [2024-11-09 07:22:49,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:22:49,813 INFO L225 Difference]: With dead ends: 198 [2024-11-09 07:22:49,813 INFO L226 Difference]: Without dead ends: 194 [2024-11-09 07:22:49,818 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9860 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=9133, Invalid=12623, Unknown=0, NotChecked=0, Total=21756 [2024-11-09 07:22:49,819 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:22:49,820 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 8 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 07:22:49,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-09 07:22:49,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2024-11-09 07:22:49,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.005181347150259) internal successors, (194), 193 states have internal predecessors, (194), 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) [2024-11-09 07:22:49,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2024-11-09 07:22:49,843 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 97 [2024-11-09 07:22:49,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:22:49,844 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2024-11-09 07:22:49,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 143 states, 143 states have (on average 1.993006993006993) internal successors, (285), 142 states have internal predecessors, (285), 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) [2024-11-09 07:22:49,845 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2024-11-09 07:22:49,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-09 07:22:49,848 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:22:49,849 INFO L215 NwaCegarLoop]: trace histogram [94, 94, 1, 1, 1, 1, 1] [2024-11-09 07:22:49,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 07:22:50,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:22:50,050 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:22:50,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:22:50,050 INFO L85 PathProgramCache]: Analyzing trace with hash -107891400, now seen corresponding path program 6 times [2024-11-09 07:22:50,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:22:50,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795265352] [2024-11-09 07:22:50,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:22:50,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:22:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:22:58,694 INFO L134 CoverageAnalysis]: Checked inductivity of 8836 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:22:58,694 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:22:58,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795265352] [2024-11-09 07:22:58,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795265352] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:22:58,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402327763] [2024-11-09 07:22:58,694 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 07:22:58,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:22:58,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:22:58,696 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:22:58,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 07:22:58,894 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 07:22:58,894 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:22:58,899 INFO L255 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-11-09 07:22:58,926 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:23:05,600 INFO L134 CoverageAnalysis]: Checked inductivity of 8836 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:23:05,600 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:23:21,899 INFO L134 CoverageAnalysis]: Checked inductivity of 8836 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:23:21,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402327763] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:23:21,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [725893055] [2024-11-09 07:23:21,902 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 07:23:21,902 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:23:21,902 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:23:21,903 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:23:21,903 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:23:22,108 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:23:23,623 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4047#(exists ((|v_ULTIMATE.start_main_~sum~0#1_220| Int) (|v_ULTIMATE.start_main_~i~0#1_405| Int)) (and (<= 1 |#StackHeapBarrier|) (= |v_ULTIMATE.start_main_~i~0#1_405| 40000) (= ~SIZE~0 40000) (not (= 800020000 (mod |v_ULTIMATE.start_main_~sum~0#1_220| 18446744073709551616))) (<= 40000 |v_ULTIMATE.start_main_~sum~0#1_220|)))' at error location [2024-11-09 07:23:23,623 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:23:23,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:23:23,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 286 [2024-11-09 07:23:23,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391427309] [2024-11-09 07:23:23,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:23:23,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 287 states [2024-11-09 07:23:23,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:23:23,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 287 interpolants. [2024-11-09 07:23:23,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36685, Invalid=48287, Unknown=0, NotChecked=0, Total=84972 [2024-11-09 07:23:23,654 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand has 287 states, 287 states have (on average 1.9965156794425087) internal successors, (573), 286 states have internal predecessors, (573), 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) [2024-11-09 07:23:25,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:23:25,368 INFO L93 Difference]: Finished difference Result 390 states and 485 transitions. [2024-11-09 07:23:25,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2024-11-09 07:23:25,370 INFO L78 Accepts]: Start accepts. Automaton has has 287 states, 287 states have (on average 1.9965156794425087) internal successors, (573), 286 states have internal predecessors, (573), 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) Word has length 193 [2024-11-09 07:23:25,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:23:25,373 INFO L225 Difference]: With dead ends: 390 [2024-11-09 07:23:25,373 INFO L226 Difference]: Without dead ends: 386 [2024-11-09 07:23:25,380 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 290 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38180 ImplicationChecksByTransitivity, 28.4s TimeCoverageRelationStatistics Valid=36685, Invalid=48287, Unknown=0, NotChecked=0, Total=84972 [2024-11-09 07:23:25,381 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 07:23:25,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 14 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 07:23:25,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2024-11-09 07:23:25,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2024-11-09 07:23:25,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 1.0025974025974025) internal successors, (386), 385 states have internal predecessors, (386), 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) [2024-11-09 07:23:25,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 386 transitions. [2024-11-09 07:23:25,421 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 386 transitions. Word has length 193 [2024-11-09 07:23:25,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:23:25,422 INFO L471 AbstractCegarLoop]: Abstraction has 386 states and 386 transitions. [2024-11-09 07:23:25,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 287 states, 287 states have (on average 1.9965156794425087) internal successors, (573), 286 states have internal predecessors, (573), 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) [2024-11-09 07:23:25,423 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 386 transitions. [2024-11-09 07:23:25,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2024-11-09 07:23:25,433 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:23:25,433 INFO L215 NwaCegarLoop]: trace histogram [190, 190, 1, 1, 1, 1, 1] [2024-11-09 07:23:25,458 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 07:23:25,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:23:25,634 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:23:25,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:23:25,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1488770280, now seen corresponding path program 7 times [2024-11-09 07:23:25,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:23:25,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922691544] [2024-11-09 07:23:25,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:23:25,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:23:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:23:54,098 INFO L134 CoverageAnalysis]: Checked inductivity of 36100 backedges. 0 proven. 36100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:23:54,099 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:23:54,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922691544] [2024-11-09 07:23:54,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922691544] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:23:54,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499325409] [2024-11-09 07:23:54,099 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 07:23:54,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:23:54,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:23:54,101 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:23:54,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 07:23:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:23:54,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 193 conjuncts are in the unsatisfiable core [2024-11-09 07:23:54,328 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:24:14,743 INFO L134 CoverageAnalysis]: Checked inductivity of 36100 backedges. 0 proven. 36100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:24:14,744 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:25:12,951 INFO L134 CoverageAnalysis]: Checked inductivity of 36100 backedges. 0 proven. 36100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:25:12,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499325409] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:25:12,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [861844028] [2024-11-09 07:25:12,953 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 07:25:12,954 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:25:12,954 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:25:12,954 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:25:12,954 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:25:13,201 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:25:15,519 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8089#(exists ((|v_ULTIMATE.start_main_~i~0#1_791| Int) (|v_ULTIMATE.start_main_~sum~0#1_415| Int)) (and (<= 1 |#StackHeapBarrier|) (= |v_ULTIMATE.start_main_~i~0#1_791| 40000) (<= 40000 |v_ULTIMATE.start_main_~sum~0#1_415|) (= ~SIZE~0 40000) (not (= 800020000 (mod |v_ULTIMATE.start_main_~sum~0#1_415| 18446744073709551616)))))' at error location [2024-11-09 07:25:15,519 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:25:15,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:25:15,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 574 [2024-11-09 07:25:15,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909781296] [2024-11-09 07:25:15,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:25:15,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 575 states [2024-11-09 07:25:15,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:25:15,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 575 interpolants. [2024-11-09 07:25:15,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147085, Invalid=188735, Unknown=0, NotChecked=0, Total=335820 [2024-11-09 07:25:15,566 INFO L87 Difference]: Start difference. First operand 386 states and 386 transitions. Second operand has 575 states, 575 states have (on average 1.9982608695652173) internal successors, (1149), 574 states have internal predecessors, (1149), 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) [2024-11-09 07:25:23,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:25:23,339 INFO L93 Difference]: Finished difference Result 774 states and 965 transitions. [2024-11-09 07:25:23,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2024-11-09 07:25:23,341 INFO L78 Accepts]: Start accepts. Automaton has has 575 states, 575 states have (on average 1.9982608695652173) internal successors, (1149), 574 states have internal predecessors, (1149), 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) Word has length 385 [2024-11-09 07:25:23,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:25:23,346 INFO L225 Difference]: With dead ends: 774 [2024-11-09 07:25:23,346 INFO L226 Difference]: Without dead ends: 770 [2024-11-09 07:25:23,362 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1345 GetRequests, 767 SyntacticMatches, 0 SemanticMatches, 578 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150116 ImplicationChecksByTransitivity, 98.1s TimeCoverageRelationStatistics Valid=147085, Invalid=188735, Unknown=0, NotChecked=0, Total=335820 [2024-11-09 07:25:23,363 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:25:23,363 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 24 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 07:25:23,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2024-11-09 07:25:23,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 770. [2024-11-09 07:25:23,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 769 states have (on average 1.0013003901170352) internal successors, (770), 769 states have internal predecessors, (770), 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) [2024-11-09 07:25:23,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 770 transitions. [2024-11-09 07:25:23,414 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 770 transitions. Word has length 385 [2024-11-09 07:25:23,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:25:23,415 INFO L471 AbstractCegarLoop]: Abstraction has 770 states and 770 transitions. [2024-11-09 07:25:23,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 575 states, 575 states have (on average 1.9982608695652173) internal successors, (1149), 574 states have internal predecessors, (1149), 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) [2024-11-09 07:25:23,417 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 770 transitions. [2024-11-09 07:25:23,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 770 [2024-11-09 07:25:23,444 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:25:23,444 INFO L215 NwaCegarLoop]: trace histogram [382, 382, 1, 1, 1, 1, 1] [2024-11-09 07:25:23,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 07:25:23,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:25:23,645 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:25:23,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:25:23,645 INFO L85 PathProgramCache]: Analyzing trace with hash -15788328, now seen corresponding path program 8 times [2024-11-09 07:25:23,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:25:23,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62125241] [2024-11-09 07:25:23,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:25:23,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:25:26,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:27:33,378 INFO L134 CoverageAnalysis]: Checked inductivity of 145924 backedges. 0 proven. 145924 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:27:33,379 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:27:33,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62125241] [2024-11-09 07:27:33,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62125241] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:27:33,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654815542] [2024-11-09 07:27:33,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 07:27:33,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:27:33,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:27:33,381 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:27:33,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 07:27:36,628 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 383 check-sat command(s) [2024-11-09 07:27:36,628 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:27:36,664 INFO L255 TraceCheckSpWp]: Trace formula consists of 2327 conjuncts, 385 conjuncts are in the unsatisfiable core [2024-11-09 07:27:36,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:29:08,661 INFO L134 CoverageAnalysis]: Checked inductivity of 145924 backedges. 0 proven. 145924 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:29:08,662 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:33:57,395 INFO L134 CoverageAnalysis]: Checked inductivity of 145924 backedges. 0 proven. 145924 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:33:57,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654815542] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:33:57,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1138901009] [2024-11-09 07:33:57,398 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 07:33:57,398 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:33:57,398 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:33:57,398 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:33:57,399 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:33:57,721 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:34:02,353 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16163#(exists ((|v_ULTIMATE.start_main_~i~0#1_1561| Int) (|v_ULTIMATE.start_main_~sum~0#1_802| Int)) (and (<= 1 |#StackHeapBarrier|) (not (= 800020000 (mod |v_ULTIMATE.start_main_~sum~0#1_802| 18446744073709551616))) (= ~SIZE~0 40000) (<= 40000 |v_ULTIMATE.start_main_~sum~0#1_802|) (= |v_ULTIMATE.start_main_~i~0#1_1561| 40000)))' at error location [2024-11-09 07:34:02,353 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:34:02,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:34:02,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [384, 384, 384] total 1150 [2024-11-09 07:34:02,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610039106] [2024-11-09 07:34:02,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:34:02,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 1151 states [2024-11-09 07:34:02,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:34:02,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 1151 interpolants. [2024-11-09 07:34:02,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=589069, Invalid=746111, Unknown=0, NotChecked=0, Total=1335180 [2024-11-09 07:34:02,554 INFO L87 Difference]: Start difference. First operand 770 states and 770 transitions. Second operand has 1151 states, 1151 states have (on average 1.999131190269331) internal successors, (2301), 1150 states have internal predecessors, (2301), 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) [2024-11-09 07:35:07,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:35:07,161 INFO L93 Difference]: Finished difference Result 1542 states and 1925 transitions. [2024-11-09 07:35:07,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 768 states. [2024-11-09 07:35:07,164 INFO L78 Accepts]: Start accepts. Automaton has has 1151 states, 1151 states have (on average 1.999131190269331) internal successors, (2301), 1150 states have internal predecessors, (2301), 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) Word has length 769 [2024-11-09 07:35:07,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:35:07,173 INFO L225 Difference]: With dead ends: 1542 [2024-11-09 07:35:07,173 INFO L226 Difference]: Without dead ends: 1538 [2024-11-09 07:35:07,258 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2689 GetRequests, 1535 SyntacticMatches, 0 SemanticMatches, 1154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595172 ImplicationChecksByTransitivity, 458.3s TimeCoverageRelationStatistics Valid=589069, Invalid=746111, Unknown=0, NotChecked=0, Total=1335180 [2024-11-09 07:35:07,259 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 1934 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 1936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-09 07:35:07,259 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 16 Invalid, 1936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1934 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-09 07:35:07,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2024-11-09 07:35:07,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 1538. [2024-11-09 07:35:07,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1537 states have (on average 1.0006506180871828) internal successors, (1538), 1537 states have internal predecessors, (1538), 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) [2024-11-09 07:35:07,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 1538 transitions. [2024-11-09 07:35:07,346 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 1538 transitions. Word has length 769 [2024-11-09 07:35:07,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:35:07,348 INFO L471 AbstractCegarLoop]: Abstraction has 1538 states and 1538 transitions. [2024-11-09 07:35:07,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 1151 states, 1151 states have (on average 1.999131190269331) internal successors, (2301), 1150 states have internal predecessors, (2301), 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) [2024-11-09 07:35:07,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 1538 transitions. [2024-11-09 07:35:07,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1538 [2024-11-09 07:35:07,414 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:35:07,414 INFO L215 NwaCegarLoop]: trace histogram [766, 766, 1, 1, 1, 1, 1] [2024-11-09 07:35:07,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 07:35:07,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bbebf-e6a7-4034-ba41-6604cf159ea2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:35:07,615 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:35:07,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:35:07,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1068831144, now seen corresponding path program 9 times [2024-11-09 07:35:07,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:35:07,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125251640] [2024-11-09 07:35:07,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:35:07,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms