./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows 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_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/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_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 322f54fed62e27ecdc37b8dbd1ba5a40efbeb3c981a1a7430a57877b391f432f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 01:26:27,822 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 01:26:27,934 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Overflow-32bit-Taipan_Default.epf [2024-11-09 01:26:27,940 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 01:26:27,941 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 01:26:27,966 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 01:26:27,967 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 01:26:27,967 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 01:26:27,968 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 01:26:27,969 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 01:26:27,969 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 01:26:27,969 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 01:26:27,970 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 01:26:27,970 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 01:26:27,971 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 01:26:27,971 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 01:26:27,972 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 01:26:27,972 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 01:26:27,973 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 01:26:27,973 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 01:26:27,974 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 01:26:27,975 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 01:26:27,976 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 01:26:27,976 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 01:26:27,977 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 01:26:27,977 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 01:26:27,977 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 01:26:27,978 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 01:26:27,978 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 01:26:27,979 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 01:26:27,979 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 01:26:27,980 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 01:26:27,980 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 01:26:27,980 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 01:26:27,981 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 01:26:27,981 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 01:26:27,982 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 01:26:27,982 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 01:26:27,983 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 01:26:27,983 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 01:26:27,984 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 01:26:27,984 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 01:26:27,985 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 01:26:27,985 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 01:26:27,985 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 01:26:27,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 01:26:27,986 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 01:26:27,986 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 01:26:27,987 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 01:26:27,987 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_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 322f54fed62e27ecdc37b8dbd1ba5a40efbeb3c981a1a7430a57877b391f432f [2024-11-09 01:26:28,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 01:26:28,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 01:26:28,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 01:26:28,336 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 01:26:28,336 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 01:26:28,338 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound1.c Unable to find full path for "g++" [2024-11-09 01:26:30,824 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 01:26:31,038 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 01:26:31,039 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound1.c [2024-11-09 01:26:31,048 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/data/8e2c4e87d/f5280e2edd9b4faa914c5bb44506d5bb/FLAGf35a67482 [2024-11-09 01:26:31,406 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/data/8e2c4e87d/f5280e2edd9b4faa914c5bb44506d5bb [2024-11-09 01:26:31,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 01:26:31,411 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 01:26:31,413 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 01:26:31,413 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 01:26:31,421 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 01:26:31,426 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:26:31" (1/1) ... [2024-11-09 01:26:31,428 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35c71d1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:26:31, skipping insertion in model container [2024-11-09 01:26:31,428 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:26:31" (1/1) ... [2024-11-09 01:26:31,462 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 01:26:31,754 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 01:26:31,765 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 01:26:31,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 01:26:31,808 INFO L204 MainTranslator]: Completed translation [2024-11-09 01:26:31,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:26:31 WrapperNode [2024-11-09 01:26:31,809 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 01:26:31,811 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 01:26:31,811 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 01:26:31,812 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 01:26:31,820 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:26:31" (1/1) ... [2024-11-09 01:26:31,828 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:26:31" (1/1) ... [2024-11-09 01:26:31,846 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 44 [2024-11-09 01:26:31,847 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 01:26:31,848 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 01:26:31,848 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 01:26:31,848 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 01:26:31,861 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:26:31" (1/1) ... [2024-11-09 01:26:31,862 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:26:31" (1/1) ... [2024-11-09 01:26:31,863 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:26:31" (1/1) ... [2024-11-09 01:26:31,864 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:26:31" (1/1) ... [2024-11-09 01:26:31,869 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:26:31" (1/1) ... [2024-11-09 01:26:31,873 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:26:31" (1/1) ... [2024-11-09 01:26:31,874 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:26:31" (1/1) ... [2024-11-09 01:26:31,876 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:26:31" (1/1) ... [2024-11-09 01:26:31,878 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 01:26:31,879 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 01:26:31,879 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 01:26:31,880 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 01:26:31,881 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:26:31" (1/1) ... [2024-11-09 01:26:31,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 01:26:31,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:26:31,920 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 01:26:31,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 01:26:31,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 01:26:31,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 01:26:31,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 01:26:31,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 01:26:31,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 01:26:31,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 01:26:32,039 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 01:26:32,042 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 01:26:32,216 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-09 01:26:32,216 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 01:26:32,321 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 01:26:32,322 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 01:26:32,322 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:26:32 BoogieIcfgContainer [2024-11-09 01:26:32,323 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 01:26:32,328 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 01:26:32,328 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 01:26:32,332 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 01:26:32,333 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 01:26:31" (1/3) ... [2024-11-09 01:26:32,334 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d0ef6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:26:32, skipping insertion in model container [2024-11-09 01:26:32,334 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:26:31" (2/3) ... [2024-11-09 01:26:32,335 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d0ef6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:26:32, skipping insertion in model container [2024-11-09 01:26:32,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:26:32" (3/3) ... [2024-11-09 01:26:32,337 INFO L112 eAbstractionObserver]: Analyzing ICFG freire1_valuebound1.c [2024-11-09 01:26:32,355 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 01:26:32,355 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-09 01:26:32,435 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 01:26:32,443 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;@7234ed6b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 01:26:32,443 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-09 01:26:32,447 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 17 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 01:26:32,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-09 01:26:32,455 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:26:32,456 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-09 01:26:32,457 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 01:26:32,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:26:32,464 INFO L85 PathProgramCache]: Analyzing trace with hash 98567, now seen corresponding path program 1 times [2024-11-09 01:26:32,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:26:32,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041787263] [2024-11-09 01:26:32,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:26:32,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:26:32,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:26:32,758 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 01:26:32,759 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:26:32,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041787263] [2024-11-09 01:26:32,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041787263] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:26:32,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:26:32,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 01:26:32,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716029210] [2024-11-09 01:26:32,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:26:32,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 01:26:32,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:26:32,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 01:26:32,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 01:26:32,812 INFO L87 Difference]: Start difference. First operand has 21 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 17 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 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 01:26:32,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:26:32,871 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2024-11-09 01:26:32,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 01:26:32,874 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2024-11-09 01:26:32,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:26:32,893 INFO L225 Difference]: With dead ends: 29 [2024-11-09 01:26:32,893 INFO L226 Difference]: Without dead ends: 16 [2024-11-09 01:26:32,903 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 01:26:32,911 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 01:26:32,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 01:26:32,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-09 01:26:32,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-09 01:26:32,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.4) internal successors, (14), 13 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 01:26:32,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2024-11-09 01:26:32,967 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 3 [2024-11-09 01:26:32,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:26:32,968 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2024-11-09 01:26:32,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 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 01:26:32,970 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2024-11-09 01:26:32,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 01:26:32,972 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:26:32,972 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 01:26:32,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 01:26:32,973 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 01:26:32,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:26:32,977 INFO L85 PathProgramCache]: Analyzing trace with hash 3055628, now seen corresponding path program 1 times [2024-11-09 01:26:32,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:26:32,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478192075] [2024-11-09 01:26:32,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:26:32,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:26:33,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 01:26:33,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1780542423] [2024-11-09 01:26:33,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:26:33,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:26:33,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:26:33,015 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:26:33,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 01:26:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:26:33,112 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 01:26:33,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:26:33,147 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 01:26:33,148 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 01:26:33,148 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:26:33,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478192075] [2024-11-09 01:26:33,150 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 01:26:33,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780542423] [2024-11-09 01:26:33,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780542423] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:26:33,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:26:33,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 01:26:33,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672673278] [2024-11-09 01:26:33,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:26:33,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:26:33,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:26:33,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:26:33,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:26:33,163 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 01:26:33,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:26:33,233 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2024-11-09 01:26:33,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:26:33,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2024-11-09 01:26:33,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:26:33,235 INFO L225 Difference]: With dead ends: 29 [2024-11-09 01:26:33,235 INFO L226 Difference]: Without dead ends: 23 [2024-11-09 01:26:33,236 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 01:26:33,237 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 5 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:26:33,238 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 14 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 01:26:33,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-09 01:26:33,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-09 01:26:33,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 01:26:33,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2024-11-09 01:26:33,246 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 4 [2024-11-09 01:26:33,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:26:33,247 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2024-11-09 01:26:33,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 01:26:33,248 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2024-11-09 01:26:33,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 01:26:33,249 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:26:33,250 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:26:33,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 01:26:33,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:26:33,455 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 01:26:33,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:26:33,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1614454891, now seen corresponding path program 1 times [2024-11-09 01:26:33,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:26:33,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725832706] [2024-11-09 01:26:33,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:26:33,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:26:33,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 01:26:33,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1475777163] [2024-11-09 01:26:33,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:26:33,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:26:33,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:26:33,516 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:26:33,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 01:26:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:26:33,598 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 01:26:33,600 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:26:33,680 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:26:33,681 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:26:33,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:26:33,794 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:26:33,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725832706] [2024-11-09 01:26:33,794 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 01:26:33,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475777163] [2024-11-09 01:26:33,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475777163] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:26:33,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [515024605] [2024-11-09 01:26:33,831 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-09 01:26:33,835 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:26:33,849 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:26:33,868 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:26:33,872 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:26:35,098 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2024-11-09 01:26:35,100 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:26:35,463 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '239#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~r~0#1_36| Int)) (and (<= |v_ULTIMATE.start_main_~r~0#1_36| 2147483647) (<= 0 |v_ULTIMATE.start_main_~r~0#1_36|) (<= 2147483648 (* |v_ULTIMATE.start_main_~r~0#1_36| |v_ULTIMATE.start_main_~r~0#1_36|)))))' at error location [2024-11-09 01:26:35,464 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:26:35,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 01:26:35,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2024-11-09 01:26:35,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732831521] [2024-11-09 01:26:35,464 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 01:26:35,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 01:26:35,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:26:35,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 01:26:35,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-09 01:26:35,469 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 01:26:35,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:26:35,622 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2024-11-09 01:26:35,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 01:26:35,623 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2024-11-09 01:26:35,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:26:35,625 INFO L225 Difference]: With dead ends: 45 [2024-11-09 01:26:35,625 INFO L226 Difference]: Without dead ends: 35 [2024-11-09 01:26:35,625 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-09 01:26:35,627 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:26:35,628 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 24 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 01:26:35,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-09 01:26:35,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-09 01:26:35,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 01:26:35,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2024-11-09 01:26:35,637 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 13 [2024-11-09 01:26:35,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:26:35,638 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2024-11-09 01:26:35,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 01:26:35,639 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2024-11-09 01:26:35,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-09 01:26:35,640 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:26:35,641 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1] [2024-11-09 01:26:35,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 01:26:35,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:26:35,846 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 01:26:35,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:26:35,847 INFO L85 PathProgramCache]: Analyzing trace with hash 735915084, now seen corresponding path program 2 times [2024-11-09 01:26:35,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:26:35,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676753248] [2024-11-09 01:26:35,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:26:35,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:26:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 01:26:35,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1109758398] [2024-11-09 01:26:35,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 01:26:35,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:26:35,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:26:35,932 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:26:35,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 01:26:36,049 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-09 01:26:36,049 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:26:36,051 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 01:26:36,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:26:36,190 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 01:26:36,191 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:26:36,461 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 01:26:36,461 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:26:36,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676753248] [2024-11-09 01:26:36,461 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 01:26:36,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109758398] [2024-11-09 01:26:36,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109758398] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:26:36,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1570657285] [2024-11-09 01:26:36,465 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-09 01:26:36,465 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:26:36,465 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:26:36,466 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:26:36,466 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:26:37,021 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2024-11-09 01:26:37,025 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:26:37,553 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '595#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~r~0#1_49| Int)) (and (<= |v_ULTIMATE.start_main_~r~0#1_49| 2147483647) (<= 0 |v_ULTIMATE.start_main_~r~0#1_49|) (<= 2147483648 (* |v_ULTIMATE.start_main_~r~0#1_49| |v_ULTIMATE.start_main_~r~0#1_49|)))))' at error location [2024-11-09 01:26:37,553 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:26:37,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 01:26:37,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-11-09 01:26:37,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808903431] [2024-11-09 01:26:37,554 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 01:26:37,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 01:26:37,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:26:37,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 01:26:37,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2024-11-09 01:26:37,559 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-09 01:26:37,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:26:37,983 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions. [2024-11-09 01:26:37,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 01:26:37,984 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 40 [2024-11-09 01:26:37,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:26:37,986 INFO L225 Difference]: With dead ends: 78 [2024-11-09 01:26:37,986 INFO L226 Difference]: Without dead ends: 77 [2024-11-09 01:26:37,987 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 97 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2024-11-09 01:26:37,990 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 18 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 01:26:37,992 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 95 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 01:26:37,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-09 01:26:38,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-11-09 01:26:38,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 65 states have (on average 1.0153846153846153) internal successors, (66), 65 states have internal predecessors, (66), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-09 01:26:38,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2024-11-09 01:26:38,021 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 40 [2024-11-09 01:26:38,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:26:38,023 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2024-11-09 01:26:38,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-09 01:26:38,024 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2024-11-09 01:26:38,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-09 01:26:38,030 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:26:38,030 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 1, 1] [2024-11-09 01:26:38,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 01:26:38,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:26:38,234 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 01:26:38,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:26:38,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1958863532, now seen corresponding path program 3 times [2024-11-09 01:26:38,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:26:38,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661307975] [2024-11-09 01:26:38,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:26:38,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:26:38,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 01:26:38,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [652918534] [2024-11-09 01:26:38,364 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 01:26:38,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:26:38,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:26:38,368 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:26:38,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 01:26:38,494 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 01:26:38,495 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:26:38,497 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 01:26:38,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:26:38,827 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-09 01:26:38,828 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:26:39,526 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-09 01:26:39,528 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:26:39,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661307975] [2024-11-09 01:26:39,528 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 01:26:39,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652918534] [2024-11-09 01:26:39,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652918534] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:26:39,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [44558369] [2024-11-09 01:26:39,533 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-09 01:26:39,533 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:26:39,533 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:26:39,533 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:26:39,534 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:26:39,892 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2024-11-09 01:26:39,897 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:26:41,063 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1392#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~r~0#1_74| Int)) (and (<= |v_ULTIMATE.start_main_~r~0#1_74| 2147483647) (<= 2147483648 (* |v_ULTIMATE.start_main_~r~0#1_74| |v_ULTIMATE.start_main_~r~0#1_74|)) (<= 0 |v_ULTIMATE.start_main_~r~0#1_74|))))' at error location [2024-11-09 01:26:41,063 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:26:41,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 01:26:41,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2024-11-09 01:26:41,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328525450] [2024-11-09 01:26:41,064 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 01:26:41,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 01:26:41,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:26:41,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 01:26:41,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=683, Unknown=0, NotChecked=0, Total=870 [2024-11-09 01:26:41,067 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand has 24 states, 23 states have (on average 5.608695652173913) internal successors, (129), 24 states have internal predecessors, (129), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-09 01:26:42,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:26:42,471 INFO L93 Difference]: Finished difference Result 162 states and 194 transitions. [2024-11-09 01:26:42,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 01:26:42,472 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.608695652173913) internal successors, (129), 24 states have internal predecessors, (129), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 94 [2024-11-09 01:26:42,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:26:42,476 INFO L225 Difference]: With dead ends: 162 [2024-11-09 01:26:42,480 INFO L226 Difference]: Without dead ends: 161 [2024-11-09 01:26:42,481 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 241 SyntacticMatches, 11 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=427, Invalid=1133, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 01:26:42,482 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 39 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 01:26:42,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 407 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 01:26:42,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-09 01:26:42,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2024-11-09 01:26:42,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 137 states have (on average 1.0072992700729928) internal successors, (138), 137 states have internal predecessors, (138), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-09 01:26:42,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 182 transitions. [2024-11-09 01:26:42,529 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 182 transitions. Word has length 94 [2024-11-09 01:26:42,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:26:42,532 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 182 transitions. [2024-11-09 01:26:42,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.608695652173913) internal successors, (129), 24 states have internal predecessors, (129), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-09 01:26:42,533 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 182 transitions. [2024-11-09 01:26:42,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-09 01:26:42,541 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:26:42,541 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 22, 22, 1, 1] [2024-11-09 01:26:42,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 01:26:42,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:26:42,742 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 01:26:42,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:26:42,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1745635476, now seen corresponding path program 4 times [2024-11-09 01:26:42,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:26:42,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963856293] [2024-11-09 01:26:42,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:26:42,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:26:42,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 01:26:42,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [142454577] [2024-11-09 01:26:42,933 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 01:26:42,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:26:42,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:26:42,935 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:26:42,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 01:26:43,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:26:43,067 INFO L255 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-09 01:26:43,074 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:26:43,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 1683 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2024-11-09 01:26:43,800 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:26:45,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 1683 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2024-11-09 01:26:45,687 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:26:45,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963856293] [2024-11-09 01:26:45,687 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 01:26:45,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142454577] [2024-11-09 01:26:45,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142454577] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:26:45,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [652859877] [2024-11-09 01:26:45,690 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-09 01:26:45,691 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:26:45,691 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:26:45,691 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:26:45,692 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:26:46,000 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2024-11-09 01:26:46,001 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:26:48,955 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3089#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~r~0#1_123| Int)) (and (<= 2147483648 (* |v_ULTIMATE.start_main_~r~0#1_123| |v_ULTIMATE.start_main_~r~0#1_123|)) (<= |v_ULTIMATE.start_main_~r~0#1_123| 2147483647) (<= 0 |v_ULTIMATE.start_main_~r~0#1_123|))))' at error location [2024-11-09 01:26:48,956 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:26:48,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 01:26:48,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2024-11-09 01:26:48,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351150619] [2024-11-09 01:26:48,957 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 01:26:48,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-09 01:26:48,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:26:48,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-09 01:26:48,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=643, Invalid=2219, Unknown=0, NotChecked=0, Total=2862 [2024-11-09 01:26:48,962 INFO L87 Difference]: Start difference. First operand 161 states and 182 transitions. Second operand has 48 states, 47 states have (on average 5.808510638297872) internal successors, (273), 48 states have internal predecessors, (273), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-09 01:26:54,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:26:54,004 INFO L93 Difference]: Finished difference Result 330 states and 398 transitions. [2024-11-09 01:26:54,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-09 01:26:54,005 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.808510638297872) internal successors, (273), 48 states have internal predecessors, (273), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 202 [2024-11-09 01:26:54,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:26:54,008 INFO L225 Difference]: With dead ends: 330 [2024-11-09 01:26:54,009 INFO L226 Difference]: Without dead ends: 329 [2024-11-09 01:26:54,011 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 626 GetRequests, 529 SyntacticMatches, 23 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=1699, Invalid=4001, Unknown=0, NotChecked=0, Total=5700 [2024-11-09 01:26:54,012 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 72 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 2805 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1679 SdHoareTripleChecker+Invalid, 2829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-09 01:26:54,013 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 1679 Invalid, 2829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2805 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-09 01:26:54,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2024-11-09 01:26:54,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2024-11-09 01:26:54,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 281 states have (on average 1.00355871886121) internal successors, (282), 281 states have internal predecessors, (282), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-09 01:26:54,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 374 transitions. [2024-11-09 01:26:54,047 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 374 transitions. Word has length 202 [2024-11-09 01:26:54,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:26:54,048 INFO L471 AbstractCegarLoop]: Abstraction has 329 states and 374 transitions. [2024-11-09 01:26:54,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.808510638297872) internal successors, (273), 48 states have internal predecessors, (273), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-09 01:26:54,049 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 374 transitions. [2024-11-09 01:26:54,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2024-11-09 01:26:54,056 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:26:54,056 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 46, 46, 46, 1, 1] [2024-11-09 01:26:54,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 01:26:54,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:26:54,258 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 01:26:54,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:26:54,258 INFO L85 PathProgramCache]: Analyzing trace with hash 107020524, now seen corresponding path program 5 times [2024-11-09 01:26:54,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:26:54,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408575553] [2024-11-09 01:26:54,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:26:54,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:26:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 01:26:54,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [639919561] [2024-11-09 01:26:54,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 01:26:54,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:26:54,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:26:54,467 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:26:54,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 01:26:55,080 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2024-11-09 01:26:55,080 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:26:55,083 INFO L255 TraceCheckSpWp]: Trace formula consists of 671 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-09 01:26:55,096 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:26:56,839 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 7383 refuted. 0 times theorem prover too weak. 2070 trivial. 0 not checked. [2024-11-09 01:26:56,839 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:26:57,278 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:26:57,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408575553] [2024-11-09 01:26:57,278 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 01:26:57,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639919561] [2024-11-09 01:26:57,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639919561] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:26:57,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1312636360] [2024-11-09 01:26:57,280 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-09 01:26:57,280 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:26:57,281 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:26:57,281 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:26:57,281 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:26:57,544 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2024-11-09 01:26:57,546 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:27:01,341 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5341#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~r~0#1_176| Int)) (and (<= 0 |v_ULTIMATE.start_main_~r~0#1_176|) (<= |v_ULTIMATE.start_main_~r~0#1_176| 2147483647) (<= 2147483648 (* |v_ULTIMATE.start_main_~r~0#1_176| |v_ULTIMATE.start_main_~r~0#1_176|)))))' at error location [2024-11-09 01:27:01,341 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:27:01,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 01:27:01,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2024-11-09 01:27:01,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284910169] [2024-11-09 01:27:01,342 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 01:27:01,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-09 01:27:01,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:27:01,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-09 01:27:01,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1264, Invalid=2276, Unknown=0, NotChecked=0, Total=3540 [2024-11-09 01:27:01,346 INFO L87 Difference]: Start difference. First operand 329 states and 374 transitions. Second operand has 50 states, 49 states have (on average 5.73469387755102) internal successors, (281), 50 states have internal predecessors, (281), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-09 01:27:04,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:27:04,114 INFO L93 Difference]: Finished difference Result 341 states and 388 transitions. [2024-11-09 01:27:04,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-09 01:27:04,116 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 5.73469387755102) internal successors, (281), 50 states have internal predecessors, (281), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Word has length 418 [2024-11-09 01:27:04,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:27:04,121 INFO L225 Difference]: With dead ends: 341 [2024-11-09 01:27:04,121 INFO L226 Difference]: Without dead ends: 340 [2024-11-09 01:27:04,124 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 897 GetRequests, 746 SyntacticMatches, 47 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4251 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=3748, Invalid=7382, Unknown=0, NotChecked=0, Total=11130 [2024-11-09 01:27:04,125 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 233 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 01:27:04,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 108 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 01:27:04,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2024-11-09 01:27:04,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 336. [2024-11-09 01:27:04,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 287 states have (on average 1.0034843205574913) internal successors, (288), 287 states have internal predecessors, (288), 47 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-09 01:27:04,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 382 transitions. [2024-11-09 01:27:04,171 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 382 transitions. Word has length 418 [2024-11-09 01:27:04,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:27:04,172 INFO L471 AbstractCegarLoop]: Abstraction has 336 states and 382 transitions. [2024-11-09 01:27:04,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 5.73469387755102) internal successors, (281), 50 states have internal predecessors, (281), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-09 01:27:04,173 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 382 transitions. [2024-11-09 01:27:04,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2024-11-09 01:27:04,187 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:27:04,187 INFO L215 NwaCegarLoop]: trace histogram [48, 48, 47, 47, 47, 47, 47, 47, 47, 1, 1] [2024-11-09 01:27:04,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 01:27:04,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:27:04,388 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 01:27:04,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:27:04,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1132332363, now seen corresponding path program 6 times [2024-11-09 01:27:04,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:27:04,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028119980] [2024-11-09 01:27:04,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:04,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:27:04,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 01:27:04,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1557460851] [2024-11-09 01:27:04,525 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 01:27:04,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:27:04,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:27:04,527 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:27:04,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 01:27:04,765 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 01:27:04,765 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:27:04,769 INFO L255 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-11-09 01:27:04,776 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:27:06,440 INFO L134 CoverageAnalysis]: Checked inductivity of 9870 backedges. 0 proven. 7708 refuted. 0 times theorem prover too weak. 2162 trivial. 0 not checked. [2024-11-09 01:27:06,440 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:27:12,493 INFO L134 CoverageAnalysis]: Checked inductivity of 9870 backedges. 0 proven. 7708 refuted. 0 times theorem prover too weak. 2162 trivial. 0 not checked. [2024-11-09 01:27:12,494 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:27:12,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028119980] [2024-11-09 01:27:12,494 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 01:27:12,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557460851] [2024-11-09 01:27:12,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557460851] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:27:12,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [286476439] [2024-11-09 01:27:12,496 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-09 01:27:12,496 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:27:12,497 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:27:12,497 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:27:12,497 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:27:12,788 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2024-11-09 01:27:12,790 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:27:21,603 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8965#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~r~0#1_275| Int)) (and (<= 2147483648 (* |v_ULTIMATE.start_main_~r~0#1_275| |v_ULTIMATE.start_main_~r~0#1_275|)) (<= |v_ULTIMATE.start_main_~r~0#1_275| 2147483647) (<= 0 |v_ULTIMATE.start_main_~r~0#1_275|))))' at error location [2024-11-09 01:27:21,603 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:27:21,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 01:27:21,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 97 [2024-11-09 01:27:21,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792943004] [2024-11-09 01:27:21,604 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 01:27:21,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-11-09 01:27:21,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:27:21,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-11-09 01:27:21,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2518, Invalid=8194, Unknown=0, NotChecked=0, Total=10712 [2024-11-09 01:27:21,611 INFO L87 Difference]: Start difference. First operand 336 states and 382 transitions. Second operand has 98 states, 97 states have (on average 5.907216494845361) internal successors, (573), 98 states have internal predecessors, (573), 94 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-09 01:27:44,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:27:44,752 INFO L93 Difference]: Finished difference Result 680 states and 823 transitions. [2024-11-09 01:27:44,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-11-09 01:27:44,754 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 97 states have (on average 5.907216494845361) internal successors, (573), 98 states have internal predecessors, (573), 94 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) Word has length 427 [2024-11-09 01:27:44,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:27:44,759 INFO L225 Difference]: With dead ends: 680 [2024-11-09 01:27:44,759 INFO L226 Difference]: Without dead ends: 679 [2024-11-09 01:27:44,765 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1326 GetRequests, 1129 SyntacticMatches, 48 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4005 ImplicationChecksByTransitivity, 32.9s TimeCoverageRelationStatistics Valid=7124, Invalid=15526, Unknown=0, NotChecked=0, Total=22650 [2024-11-09 01:27:44,766 INFO L432 NwaCegarLoop]: 193 mSDtfsCounter, 147 mSDsluCounter, 6911 mSDsCounter, 0 mSdLazyCounter, 11855 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 7104 SdHoareTripleChecker+Invalid, 11904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 11855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-09 01:27:44,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 7104 Invalid, 11904 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [49 Valid, 11855 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-09 01:27:44,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2024-11-09 01:27:44,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 679. [2024-11-09 01:27:44,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 581 states have (on average 1.0017211703958693) internal successors, (582), 581 states have internal predecessors, (582), 96 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-09 01:27:44,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 774 transitions. [2024-11-09 01:27:44,836 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 774 transitions. Word has length 427 [2024-11-09 01:27:44,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:27:44,838 INFO L471 AbstractCegarLoop]: Abstraction has 679 states and 774 transitions. [2024-11-09 01:27:44,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 97 states have (on average 5.907216494845361) internal successors, (573), 98 states have internal predecessors, (573), 94 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-09 01:27:44,839 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 774 transitions. [2024-11-09 01:27:44,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 869 [2024-11-09 01:27:44,873 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:27:44,873 INFO L215 NwaCegarLoop]: trace histogram [97, 97, 96, 96, 96, 96, 96, 96, 96, 1, 1] [2024-11-09 01:27:44,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 01:27:45,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:27:45,074 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 01:27:45,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:27:45,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1783973388, now seen corresponding path program 7 times [2024-11-09 01:27:45,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:27:45,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417756375] [2024-11-09 01:27:45,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:45,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:27:45,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 01:27:45,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [479210427] [2024-11-09 01:27:45,463 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 01:27:45,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:27:45,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:27:45,465 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:27:45,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 01:27:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:45,912 INFO L255 TraceCheckSpWp]: Trace formula consists of 1371 conjuncts, 195 conjuncts are in the unsatisfiable core [2024-11-09 01:27:45,923 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:27:51,204 INFO L134 CoverageAnalysis]: Checked inductivity of 41328 backedges. 0 proven. 32208 refuted. 0 times theorem prover too weak. 9120 trivial. 0 not checked. [2024-11-09 01:27:51,205 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:28:13,431 INFO L134 CoverageAnalysis]: Checked inductivity of 41328 backedges. 0 proven. 32208 refuted. 0 times theorem prover too weak. 9120 trivial. 0 not checked. [2024-11-09 01:28:13,431 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:28:13,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417756375] [2024-11-09 01:28:13,431 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 01:28:13,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479210427] [2024-11-09 01:28:13,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479210427] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:28:13,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1468492784] [2024-11-09 01:28:13,434 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-09 01:28:13,435 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:28:13,436 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:28:13,437 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:28:13,437 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:28:13,687 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2024-11-09 01:28:13,689 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:28:53,006 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16212#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~r~0#1_472| Int)) (and (<= |v_ULTIMATE.start_main_~r~0#1_472| 2147483647) (<= 0 |v_ULTIMATE.start_main_~r~0#1_472|) (<= 2147483648 (* |v_ULTIMATE.start_main_~r~0#1_472| |v_ULTIMATE.start_main_~r~0#1_472|)))))' at error location [2024-11-09 01:28:53,007 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:28:53,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 01:28:53,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 195 [2024-11-09 01:28:53,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567577511] [2024-11-09 01:28:53,008 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 01:28:53,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 196 states [2024-11-09 01:28:53,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:28:53,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2024-11-09 01:28:53,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9819, Invalid=30783, Unknown=0, NotChecked=0, Total=40602 [2024-11-09 01:28:53,024 INFO L87 Difference]: Start difference. First operand 679 states and 774 transitions. Second operand has 196 states, 195 states have (on average 5.953846153846154) internal successors, (1161), 196 states have internal predecessors, (1161), 192 states have call successors, (192), 1 states have call predecessors, (192), 1 states have return successors, (192), 192 states have call predecessors, (192), 192 states have call successors, (192) [2024-11-09 01:31:17,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:31:17,800 INFO L93 Difference]: Finished difference Result 1366 states and 1656 transitions. [2024-11-09 01:31:17,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2024-11-09 01:31:17,801 INFO L78 Accepts]: Start accepts. Automaton has has 196 states, 195 states have (on average 5.953846153846154) internal successors, (1161), 196 states have internal predecessors, (1161), 192 states have call successors, (192), 1 states have call predecessors, (192), 1 states have return successors, (192), 192 states have call predecessors, (192), 192 states have call successors, (192) Word has length 868 [2024-11-09 01:31:17,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:31:17,813 INFO L225 Difference]: With dead ends: 1366 [2024-11-09 01:31:17,813 INFO L226 Difference]: Without dead ends: 1365 [2024-11-09 01:31:17,827 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2698 GetRequests, 2305 SyntacticMatches, 97 SemanticMatches, 296 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15226 ImplicationChecksByTransitivity, 184.6s TimeCoverageRelationStatistics Valid=28635, Invalid=59871, Unknown=0, NotChecked=0, Total=88506 [2024-11-09 01:31:17,828 INFO L432 NwaCegarLoop]: 389 mSDtfsCounter, 297 mSDsluCounter, 28614 mSDsCounter, 0 mSdLazyCounter, 47731 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 29003 SdHoareTripleChecker+Invalid, 47830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 47731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.4s IncrementalHoareTripleChecker+Time [2024-11-09 01:31:17,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 29003 Invalid, 47830 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [99 Valid, 47731 Invalid, 0 Unknown, 0 Unchecked, 19.4s Time] [2024-11-09 01:31:17,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2024-11-09 01:31:17,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1365. [2024-11-09 01:31:17,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1169 states have (on average 1.0008554319931566) internal successors, (1170), 1169 states have internal predecessors, (1170), 194 states have call successors, (194), 1 states have call predecessors, (194), 1 states have return successors, (194), 194 states have call predecessors, (194), 194 states have call successors, (194) [2024-11-09 01:31:17,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 1558 transitions. [2024-11-09 01:31:17,960 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 1558 transitions. Word has length 868 [2024-11-09 01:31:17,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:31:17,963 INFO L471 AbstractCegarLoop]: Abstraction has 1365 states and 1558 transitions. [2024-11-09 01:31:17,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 196 states, 195 states have (on average 5.953846153846154) internal successors, (1161), 196 states have internal predecessors, (1161), 192 states have call successors, (192), 1 states have call predecessors, (192), 1 states have return successors, (192), 192 states have call predecessors, (192), 192 states have call successors, (192) [2024-11-09 01:31:17,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 1558 transitions. [2024-11-09 01:31:18,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1751 [2024-11-09 01:31:18,003 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:31:18,003 INFO L215 NwaCegarLoop]: trace histogram [195, 195, 194, 194, 194, 194, 194, 194, 194, 1, 1] [2024-11-09 01:31:18,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 01:31:18,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:31:18,204 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 01:31:18,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:31:18,205 INFO L85 PathProgramCache]: Analyzing trace with hash 858609196, now seen corresponding path program 8 times [2024-11-09 01:31:18,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:31:18,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003516754] [2024-11-09 01:31:18,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:31:18,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:31:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 01:31:19,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [868047505] [2024-11-09 01:31:19,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 01:31:19,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:31:19,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:31:19,093 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:31:19,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 01:31:22,847 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 195 check-sat command(s) [2024-11-09 01:31:22,847 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:31:22,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 2743 conjuncts, 198 conjuncts are in the unsatisfiable core [2024-11-09 01:31:22,896 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:31:43,035 INFO L134 CoverageAnalysis]: Checked inductivity of 169071 backedges. 0 proven. 131629 refuted. 0 times theorem prover too weak. 37442 trivial. 0 not checked. [2024-11-09 01:31:43,035 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:31:44,154 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:31:44,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003516754] [2024-11-09 01:31:44,154 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 01:31:44,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868047505] [2024-11-09 01:31:44,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868047505] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:31:44,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [825851406] [2024-11-09 01:31:44,157 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-09 01:31:44,157 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:31:44,157 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:31:44,158 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:31:44,158 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:31:44,385 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2024-11-09 01:31:44,387 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:32:32,098 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '25420#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~r~0#1_673| Int)) (and (<= 0 |v_ULTIMATE.start_main_~r~0#1_673|) (<= 2147483648 (* |v_ULTIMATE.start_main_~r~0#1_673| |v_ULTIMATE.start_main_~r~0#1_673|)) (<= |v_ULTIMATE.start_main_~r~0#1_673| 2147483647))))' at error location [2024-11-09 01:32:32,098 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:32:32,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 01:32:32,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [197] total 197 [2024-11-09 01:32:32,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830020240] [2024-11-09 01:32:32,099 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 01:32:32,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 198 states [2024-11-09 01:32:32,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:32:32,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2024-11-09 01:32:32,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19542, Invalid=23514, Unknown=0, NotChecked=0, Total=43056 [2024-11-09 01:32:32,116 INFO L87 Difference]: Start difference. First operand 1365 states and 1558 transitions. Second operand has 198 states, 197 states have (on average 5.934010152284264) internal successors, (1169), 198 states have internal predecessors, (1169), 194 states have call successors, (194), 1 states have call predecessors, (194), 1 states have return successors, (194), 194 states have call predecessors, (194), 194 states have call successors, (194) [2024-11-09 01:33:09,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:33:09,959 INFO L93 Difference]: Finished difference Result 1377 states and 1572 transitions. [2024-11-09 01:33:09,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2024-11-09 01:33:09,961 INFO L78 Accepts]: Start accepts. Automaton has has 198 states, 197 states have (on average 5.934010152284264) internal successors, (1169), 198 states have internal predecessors, (1169), 194 states have call successors, (194), 1 states have call predecessors, (194), 1 states have return successors, (194), 194 states have call predecessors, (194), 194 states have call successors, (194) Word has length 1750 [2024-11-09 01:33:09,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:33:09,973 INFO L225 Difference]: With dead ends: 1377 [2024-11-09 01:33:09,973 INFO L226 Difference]: Without dead ends: 1376 [2024-11-09 01:33:09,988 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3709 GetRequests, 3114 SyntacticMatches, 195 SemanticMatches, 400 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60861 ImplicationChecksByTransitivity, 100.5s TimeCoverageRelationStatistics Valid=58730, Invalid=102472, Unknown=0, NotChecked=0, Total=161202 [2024-11-09 01:33:09,989 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 973 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-09 01:33:09,989 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [974 Valid, 402 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-09 01:33:09,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2024-11-09 01:33:10,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1372. [2024-11-09 01:33:10,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1372 states, 1175 states have (on average 1.0008510638297872) internal successors, (1176), 1175 states have internal predecessors, (1176), 195 states have call successors, (195), 1 states have call predecessors, (195), 1 states have return successors, (195), 195 states have call predecessors, (195), 195 states have call successors, (195) [2024-11-09 01:33:10,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 1566 transitions. [2024-11-09 01:33:10,106 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 1566 transitions. Word has length 1750 [2024-11-09 01:33:10,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:33:10,111 INFO L471 AbstractCegarLoop]: Abstraction has 1372 states and 1566 transitions. [2024-11-09 01:33:10,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 198 states, 197 states have (on average 5.934010152284264) internal successors, (1169), 198 states have internal predecessors, (1169), 194 states have call successors, (194), 1 states have call predecessors, (194), 1 states have return successors, (194), 194 states have call predecessors, (194), 194 states have call successors, (194) [2024-11-09 01:33:10,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 1566 transitions. [2024-11-09 01:33:10,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1760 [2024-11-09 01:33:10,149 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:33:10,149 INFO L215 NwaCegarLoop]: trace histogram [196, 196, 195, 195, 195, 195, 195, 195, 195, 1, 1] [2024-11-09 01:33:10,186 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 01:33:10,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 01:33:10,350 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 01:33:10,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:33:10,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1440641675, now seen corresponding path program 9 times [2024-11-09 01:33:10,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:33:10,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828445032] [2024-11-09 01:33:10,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:33:10,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:33:11,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 01:33:11,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1777129888] [2024-11-09 01:33:11,374 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 01:33:11,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:33:11,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:33:11,377 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:33:11,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8abc9e-5d28-4c3b-8d70-c33c5abe2ed3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 01:33:12,206 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 01:33:12,206 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:33:12,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 2757 conjuncts, 393 conjuncts are in the unsatisfiable core [2024-11-09 01:33:12,254 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:33:32,441 INFO L134 CoverageAnalysis]: Checked inductivity of 170820 backedges. 0 proven. 132990 refuted. 0 times theorem prover too weak. 37830 trivial. 0 not checked. [2024-11-09 01:33:32,442 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:35:00,984 INFO L134 CoverageAnalysis]: Checked inductivity of 170820 backedges. 0 proven. 132990 refuted. 0 times theorem prover too weak. 37830 trivial. 0 not checked. [2024-11-09 01:35:00,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:35:00,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828445032] [2024-11-09 01:35:00,985 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 01:35:00,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777129888] [2024-11-09 01:35:00,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777129888] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:35:00,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2076858324] [2024-11-09 01:35:00,988 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-09 01:35:00,988 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:35:00,989 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:35:00,989 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:35:00,989 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:35:01,206 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2024-11-09 01:35:01,208 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:37:21,539 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '40292#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~r~0#1_1068| Int)) (and (<= 2147483648 (* |v_ULTIMATE.start_main_~r~0#1_1068| |v_ULTIMATE.start_main_~r~0#1_1068|)) (<= |v_ULTIMATE.start_main_~r~0#1_1068| 2147483647) (<= 0 |v_ULTIMATE.start_main_~r~0#1_1068|))))' at error location [2024-11-09 01:37:21,539 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:37:21,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 01:37:21,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [197, 197] total 393 [2024-11-09 01:37:21,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692367789] [2024-11-09 01:37:21,540 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 01:37:21,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 394 states [2024-11-09 01:37:21,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:37:21,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 394 interpolants. [2024-11-09 01:37:21,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39222, Invalid=120378, Unknown=0, NotChecked=0, Total=159600 [2024-11-09 01:37:21,576 INFO L87 Difference]: Start difference. First operand 1372 states and 1566 transitions. Second operand has 394 states, 393 states have (on average 5.977099236641221) internal successors, (2349), 394 states have internal predecessors, (2349), 390 states have call successors, (390), 1 states have call predecessors, (390), 1 states have return successors, (390), 390 states have call predecessors, (390), 390 states have call successors, (390)