./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark16_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/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_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark16_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/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_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/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 150a66a836464f467fb90ec51b7c24919c6718d6acc15c3a2ae1cbeb65f65711 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 01:27:01,509 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 01:27:01,604 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Overflow-32bit-Taipan_Default.epf [2024-11-09 01:27:01,607 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 01:27:01,608 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 01:27:01,638 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 01:27:01,639 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 01:27:01,639 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 01:27:01,640 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 01:27:01,640 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 01:27:01,641 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 01:27:01,641 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 01:27:01,642 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 01:27:01,643 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 01:27:01,646 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 01:27:01,646 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 01:27:01,646 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 01:27:01,647 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 01:27:01,647 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 01:27:01,647 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 01:27:01,648 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 01:27:01,648 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 01:27:01,649 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 01:27:01,649 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 01:27:01,649 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 01:27:01,650 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 01:27:01,654 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 01:27:01,654 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 01:27:01,655 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 01:27:01,655 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 01:27:01,655 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 01:27:01,655 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 01:27:01,656 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 01:27:01,656 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 01:27:01,656 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 01:27:01,657 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 01:27:01,657 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 01:27:01,657 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 01:27:01,658 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 01:27:01,658 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 01:27:01,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 01:27:01,660 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 01:27:01,660 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 01:27:01,661 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 01:27:01,661 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 01:27:01,661 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 01:27:01,661 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 01:27:01,662 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 01:27:01,662 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 01:27:01,662 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_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 150a66a836464f467fb90ec51b7c24919c6718d6acc15c3a2ae1cbeb65f65711 [2024-11-09 01:27:01,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 01:27:02,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 01:27:02,016 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 01:27:02,016 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 01:27:02,017 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 01:27:02,018 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/loop-zilu/benchmark16_conjunctive.i Unable to find full path for "g++" [2024-11-09 01:27:04,015 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 01:27:04,234 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 01:27:04,234 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/sv-benchmarks/c/loop-zilu/benchmark16_conjunctive.i [2024-11-09 01:27:04,244 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/data/8a8fc9910/3512df401585427e9f6699fb32487337/FLAGb3f7b399a [2024-11-09 01:27:04,257 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/data/8a8fc9910/3512df401585427e9f6699fb32487337 [2024-11-09 01:27:04,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 01:27:04,261 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 01:27:04,262 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 01:27:04,262 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 01:27:04,268 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 01:27:04,269 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:27:04" (1/1) ... [2024-11-09 01:27:04,270 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ebcc2b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:04, skipping insertion in model container [2024-11-09 01:27:04,271 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:27:04" (1/1) ... [2024-11-09 01:27:04,292 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 01:27:04,478 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 01:27:04,487 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 01:27:04,503 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 01:27:04,519 INFO L204 MainTranslator]: Completed translation [2024-11-09 01:27:04,520 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:04 WrapperNode [2024-11-09 01:27:04,520 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 01:27:04,521 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 01:27:04,521 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 01:27:04,521 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 01:27:04,527 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:04" (1/1) ... [2024-11-09 01:27:04,533 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:04" (1/1) ... [2024-11-09 01:27:04,550 INFO L138 Inliner]: procedures = 15, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 48 [2024-11-09 01:27:04,550 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 01:27:04,551 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 01:27:04,551 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 01:27:04,552 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 01:27:04,562 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:04" (1/1) ... [2024-11-09 01:27:04,562 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:04" (1/1) ... [2024-11-09 01:27:04,563 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:04" (1/1) ... [2024-11-09 01:27:04,564 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:04" (1/1) ... [2024-11-09 01:27:04,566 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:04" (1/1) ... [2024-11-09 01:27:04,570 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:04" (1/1) ... [2024-11-09 01:27:04,571 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:04" (1/1) ... [2024-11-09 01:27:04,572 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:04" (1/1) ... [2024-11-09 01:27:04,574 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 01:27:04,575 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 01:27:04,575 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 01:27:04,575 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 01:27:04,576 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:04" (1/1) ... [2024-11-09 01:27:04,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 01:27:04,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:27:04,622 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 01:27:04,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 01:27:04,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 01:27:04,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 01:27:04,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 01:27:04,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 01:27:04,720 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 01:27:04,722 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 01:27:04,909 INFO L? ?]: Removed 23 outVars from TransFormulas that were not future-live. [2024-11-09 01:27:04,910 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 01:27:04,955 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 01:27:04,955 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 01:27:04,955 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:27:04 BoogieIcfgContainer [2024-11-09 01:27:04,956 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 01:27:04,959 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 01:27:04,959 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 01:27:04,965 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 01:27:04,966 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 01:27:04" (1/3) ... [2024-11-09 01:27:04,967 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e1feef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:27:04, skipping insertion in model container [2024-11-09 01:27:04,967 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:04" (2/3) ... [2024-11-09 01:27:04,968 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e1feef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:27:04, skipping insertion in model container [2024-11-09 01:27:04,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:27:04" (3/3) ... [2024-11-09 01:27:04,971 INFO L112 eAbstractionObserver]: Analyzing ICFG benchmark16_conjunctive.i [2024-11-09 01:27:04,992 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 01:27:04,993 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-09 01:27:05,090 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 01:27:05,100 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;@3e36413d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 01:27:05,105 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-09 01:27:05,112 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 15 states have (on average 1.8) internal successors, (27), 23 states have internal predecessors, (27), 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 01:27:05,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 01:27:05,121 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:27:05,122 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 01:27:05,123 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 01:27:05,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:27:05,130 INFO L85 PathProgramCache]: Analyzing trace with hash 2718542, now seen corresponding path program 1 times [2024-11-09 01:27:05,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:27:05,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978019020] [2024-11-09 01:27:05,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:05,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:27:05,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:05,335 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 01:27:05,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:27:05,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978019020] [2024-11-09 01:27:05,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978019020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:27:05,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:27:05,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 01:27:05,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793461995] [2024-11-09 01:27:05,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:27:05,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 01:27:05,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:27:05,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 01:27:05,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 01:27:05,367 INFO L87 Difference]: Start difference. First operand has 24 states, 15 states have (on average 1.8) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 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 01:27:05,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:27:05,395 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2024-11-09 01:27:05,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 01:27:05,398 INFO L78 Accepts]: Start accepts. Automaton has has 2 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 01:27:05,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:27:05,405 INFO L225 Difference]: With dead ends: 36 [2024-11-09 01:27:05,405 INFO L226 Difference]: Without dead ends: 21 [2024-11-09 01:27:05,407 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 01:27:05,411 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 01:27:05,412 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 01:27:05,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-09 01:27:05,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-09 01:27:05,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 20 states have internal predecessors, (21), 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 01:27:05,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2024-11-09 01:27:05,443 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 4 [2024-11-09 01:27:05,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:27:05,444 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2024-11-09 01:27:05,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 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 01:27:05,444 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2024-11-09 01:27:05,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-09 01:27:05,445 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:27:05,445 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 01:27:05,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 01:27:05,446 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 01:27:05,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:27:05,446 INFO L85 PathProgramCache]: Analyzing trace with hash 84260032, now seen corresponding path program 1 times [2024-11-09 01:27:05,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:27:05,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815947616] [2024-11-09 01:27:05,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:05,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:27:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:05,526 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 01:27:05,526 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:27:05,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815947616] [2024-11-09 01:27:05,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815947616] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:27:05,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:27:05,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 01:27:05,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555556698] [2024-11-09 01:27:05,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:27:05,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:27:05,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:27:05,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:27:05,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:27:05,531 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:05,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:27:05,581 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2024-11-09 01:27:05,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:27:05,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-09 01:27:05,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:27:05,582 INFO L225 Difference]: With dead ends: 21 [2024-11-09 01:27:05,582 INFO L226 Difference]: Without dead ends: 20 [2024-11-09 01:27:05,585 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 01:27:05,586 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 01:27:05,587 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 8 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 01:27:05,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-09 01:27:05,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-09 01:27:05,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 19 states have internal predecessors, (20), 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 01:27:05,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2024-11-09 01:27:05,590 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 5 [2024-11-09 01:27:05,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:27:05,590 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2024-11-09 01:27:05,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:05,590 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2024-11-09 01:27:05,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-09 01:27:05,592 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:27:05,592 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 01:27:05,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 01:27:05,593 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 01:27:05,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:27:05,596 INFO L85 PathProgramCache]: Analyzing trace with hash 84259981, now seen corresponding path program 1 times [2024-11-09 01:27:05,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:27:05,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628685104] [2024-11-09 01:27:05,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:05,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:27:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:05,691 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 01:27:05,692 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:27:05,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628685104] [2024-11-09 01:27:05,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628685104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:27:05,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:27:05,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 01:27:05,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865758044] [2024-11-09 01:27:05,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:27:05,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:27:05,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:27:05,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:27:05,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:27:05,699 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:05,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:27:05,756 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2024-11-09 01:27:05,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:27:05,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-09 01:27:05,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:27:05,758 INFO L225 Difference]: With dead ends: 33 [2024-11-09 01:27:05,759 INFO L226 Difference]: Without dead ends: 31 [2024-11-09 01:27:05,759 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:27:05,760 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 7 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 01:27:05,763 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 11 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 01:27:05,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-09 01:27:05,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2024-11-09 01:27:05,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 25 states have internal predecessors, (28), 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 01:27:05,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2024-11-09 01:27:05,775 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 5 [2024-11-09 01:27:05,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:27:05,775 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2024-11-09 01:27:05,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:05,776 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2024-11-09 01:27:05,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-09 01:27:05,776 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:27:05,776 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 01:27:05,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 01:27:05,777 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 01:27:05,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:27:05,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1682906254, now seen corresponding path program 1 times [2024-11-09 01:27:05,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:27:05,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757781980] [2024-11-09 01:27:05,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:05,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:27:05,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:05,881 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 01:27:05,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:27:05,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757781980] [2024-11-09 01:27:05,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757781980] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:27:05,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:27:05,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 01:27:05,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797402099] [2024-11-09 01:27:05,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:27:05,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:27:05,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:27:05,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:27:05,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:27:05,885 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 01:27:05,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:27:05,931 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2024-11-09 01:27:05,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:27:05,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2024-11-09 01:27:05,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:27:05,933 INFO L225 Difference]: With dead ends: 30 [2024-11-09 01:27:05,933 INFO L226 Difference]: Without dead ends: 29 [2024-11-09 01:27:05,935 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:27:05,936 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 01:27:05,937 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 20 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 01:27:05,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-09 01:27:05,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2024-11-09 01:27:05,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 27 states have internal predecessors, (30), 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 01:27:05,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2024-11-09 01:27:05,948 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 6 [2024-11-09 01:27:05,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:27:05,952 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2024-11-09 01:27:05,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 01:27:05,952 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2024-11-09 01:27:05,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-09 01:27:05,953 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:27:05,953 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 01:27:05,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 01:27:05,953 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 01:27:05,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:27:05,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1682907824, now seen corresponding path program 1 times [2024-11-09 01:27:05,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:27:05,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970829897] [2024-11-09 01:27:05,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:05,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:27:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:06,009 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 01:27:06,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:27:06,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970829897] [2024-11-09 01:27:06,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970829897] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:27:06,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:27:06,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 01:27:06,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429617197] [2024-11-09 01:27:06,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:27:06,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:27:06,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:27:06,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:27:06,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:27:06,012 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 01:27:06,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:27:06,070 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2024-11-09 01:27:06,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:27:06,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2024-11-09 01:27:06,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:27:06,072 INFO L225 Difference]: With dead ends: 31 [2024-11-09 01:27:06,072 INFO L226 Difference]: Without dead ends: 24 [2024-11-09 01:27:06,072 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:27:06,073 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 5 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:27:06,074 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 18 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 01:27:06,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-09 01:27:06,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-09 01:27:06,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.411764705882353) internal successors, (24), 23 states have internal predecessors, (24), 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 01:27:06,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2024-11-09 01:27:06,079 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 6 [2024-11-09 01:27:06,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:27:06,079 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2024-11-09 01:27:06,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 01:27:06,080 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2024-11-09 01:27:06,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 01:27:06,080 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:27:06,080 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:27:06,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 01:27:06,081 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 01:27:06,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:27:06,082 INFO L85 PathProgramCache]: Analyzing trace with hash -630486270, now seen corresponding path program 1 times [2024-11-09 01:27:06,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:27:06,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497716271] [2024-11-09 01:27:06,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:06,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:27:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:06,119 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 01:27:06,120 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:27:06,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497716271] [2024-11-09 01:27:06,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497716271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:27:06,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:27:06,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 01:27:06,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281642182] [2024-11-09 01:27:06,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:27:06,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:27:06,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:27:06,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:27:06,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:27:06,123 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 01:27:06,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:27:06,152 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2024-11-09 01:27:06,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:27:06,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-09 01:27:06,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:27:06,153 INFO L225 Difference]: With dead ends: 27 [2024-11-09 01:27:06,153 INFO L226 Difference]: Without dead ends: 26 [2024-11-09 01:27:06,154 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:27:06,155 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 1 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 01:27:06,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 23 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 01:27:06,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-09 01:27:06,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2024-11-09 01:27:06,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 24 states have internal predecessors, (25), 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 01:27:06,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2024-11-09 01:27:06,164 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 7 [2024-11-09 01:27:06,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:27:06,164 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2024-11-09 01:27:06,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 01:27:06,165 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2024-11-09 01:27:06,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 01:27:06,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:27:06,165 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:27:06,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 01:27:06,166 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 01:27:06,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:27:06,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1929762164, now seen corresponding path program 1 times [2024-11-09 01:27:06,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:27:06,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982120416] [2024-11-09 01:27:06,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:06,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:27:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:06,205 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 01:27:06,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:27:06,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982120416] [2024-11-09 01:27:06,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982120416] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:27:06,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:27:06,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 01:27:06,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882123109] [2024-11-09 01:27:06,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:27:06,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:27:06,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:27:06,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:27:06,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:27:06,209 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 01:27:06,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:27:06,250 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2024-11-09 01:27:06,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:27:06,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2024-11-09 01:27:06,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:27:06,252 INFO L225 Difference]: With dead ends: 25 [2024-11-09 01:27:06,252 INFO L226 Difference]: Without dead ends: 24 [2024-11-09 01:27:06,254 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 01:27:06,255 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 01:27:06,256 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 7 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 01:27:06,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-09 01:27:06,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-09 01:27:06,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 23 states have internal predecessors, (24), 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 01:27:06,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2024-11-09 01:27:06,266 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 8 [2024-11-09 01:27:06,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:27:06,266 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2024-11-09 01:27:06,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 01:27:06,269 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2024-11-09 01:27:06,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 01:27:06,269 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:27:06,270 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:27:06,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 01:27:06,270 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 01:27:06,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:27:06,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1407411588, now seen corresponding path program 1 times [2024-11-09 01:27:06,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:27:06,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637890045] [2024-11-09 01:27:06,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:06,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:27:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:06,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 01:27:06,341 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:27:06,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637890045] [2024-11-09 01:27:06,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637890045] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:27:06,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:27:06,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 01:27:06,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538549733] [2024-11-09 01:27:06,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:27:06,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 01:27:06,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:27:06,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 01:27:06,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 01:27:06,343 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:06,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:27:06,389 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2024-11-09 01:27:06,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 01:27:06,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-09 01:27:06,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:27:06,390 INFO L225 Difference]: With dead ends: 24 [2024-11-09 01:27:06,390 INFO L226 Difference]: Without dead ends: 22 [2024-11-09 01:27:06,391 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 01:27:06,392 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 01:27:06,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 9 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 01:27:06,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-09 01:27:06,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-09 01:27:06,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 21 states have internal predecessors, (22), 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 01:27:06,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2024-11-09 01:27:06,397 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 11 [2024-11-09 01:27:06,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:27:06,398 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2024-11-09 01:27:06,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:06,398 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2024-11-09 01:27:06,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 01:27:06,399 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:27:06,399 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 01:27:06,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 01:27:06,400 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 01:27:06,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:27:06,400 INFO L85 PathProgramCache]: Analyzing trace with hash 680087899, now seen corresponding path program 1 times [2024-11-09 01:27:06,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:27:06,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165209845] [2024-11-09 01:27:06,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:06,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:27:06,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:06,452 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:06,452 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:27:06,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165209845] [2024-11-09 01:27:06,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165209845] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:27:06,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830280360] [2024-11-09 01:27:06,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:06,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:27:06,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:27:06,455 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:27:06,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 01:27:06,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:06,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 01:27:06,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:27:06,573 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:06,575 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:27:06,617 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:06,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830280360] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:27:06,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1333998123] [2024-11-09 01:27:06,643 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-09 01:27:06,644 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:27:06,652 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:27:06,662 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:27:06,663 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:27:07,462 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:27:07,722 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '570#(and (<= |ULTIMATE.start_main_~k~0#1| 1) (<= 1 |#StackHeapBarrier|))' at error location [2024-11-09 01:27:07,723 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:27:07,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:27:07,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-09 01:27:07,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137715769] [2024-11-09 01:27:07,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:27:07,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 01:27:07,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:27:07,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 01:27:07,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-09 01:27:07,725 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 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 01:27:07,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:27:07,788 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2024-11-09 01:27:07,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 01:27:07,788 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 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 12 [2024-11-09 01:27:07,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:27:07,790 INFO L225 Difference]: With dead ends: 57 [2024-11-09 01:27:07,790 INFO L226 Difference]: Without dead ends: 56 [2024-11-09 01:27:07,791 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-09 01:27:07,791 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 25 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:27:07,794 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 36 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 01:27:07,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-09 01:27:07,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 39. [2024-11-09 01:27:07,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 38 states have internal predecessors, (44), 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 01:27:07,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2024-11-09 01:27:07,803 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 12 [2024-11-09 01:27:07,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:27:07,804 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2024-11-09 01:27:07,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 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 01:27:07,807 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2024-11-09 01:27:07,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 01:27:07,808 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:27:07,808 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:27:07,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 01:27:08,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:27:08,009 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 01:27:08,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:27:08,010 INFO L85 PathProgramCache]: Analyzing trace with hash 680086329, now seen corresponding path program 1 times [2024-11-09 01:27:08,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:27:08,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102728479] [2024-11-09 01:27:08,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:08,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:27:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:08,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 01:27:08,119 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:27:08,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102728479] [2024-11-09 01:27:08,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102728479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:27:08,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:27:08,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 01:27:08,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807442596] [2024-11-09 01:27:08,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:27:08,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 01:27:08,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:27:08,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 01:27:08,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 01:27:08,121 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:08,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:27:08,151 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2024-11-09 01:27:08,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 01:27:08,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-09 01:27:08,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:27:08,153 INFO L225 Difference]: With dead ends: 39 [2024-11-09 01:27:08,153 INFO L226 Difference]: Without dead ends: 32 [2024-11-09 01:27:08,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 01:27:08,156 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 01:27:08,156 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 5 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 01:27:08,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-09 01:27:08,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-09 01:27:08,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 31 states have internal predecessors, (34), 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 01:27:08,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2024-11-09 01:27:08,174 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 12 [2024-11-09 01:27:08,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:27:08,175 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2024-11-09 01:27:08,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:08,175 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2024-11-09 01:27:08,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 01:27:08,176 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:27:08,176 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-09 01:27:08,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 01:27:08,176 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 01:27:08,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:27:08,177 INFO L85 PathProgramCache]: Analyzing trace with hash -392111559, now seen corresponding path program 1 times [2024-11-09 01:27:08,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:27:08,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570769145] [2024-11-09 01:27:08,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:08,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:27:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:08,218 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:08,218 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:27:08,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570769145] [2024-11-09 01:27:08,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570769145] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:27:08,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080334023] [2024-11-09 01:27:08,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:08,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:27:08,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:27:08,221 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:27:08,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 01:27:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:08,268 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 01:27:08,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:27:08,291 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:08,291 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:27:08,328 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:08,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080334023] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:27:08,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1506096711] [2024-11-09 01:27:08,331 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-09 01:27:08,331 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:27:08,331 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:27:08,331 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:27:08,332 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:27:08,660 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:27:08,924 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '846#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= 2 |ULTIMATE.start_main_~i~0#1|))' at error location [2024-11-09 01:27:08,924 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:27:08,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:27:08,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-09 01:27:08,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272433063] [2024-11-09 01:27:08,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:27:08,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 01:27:08,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:27:08,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 01:27:08,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-09 01:27:08,927 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 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 01:27:08,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:27:08,951 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2024-11-09 01:27:08,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 01:27:08,952 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-09 01:27:08,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:27:08,952 INFO L225 Difference]: With dead ends: 34 [2024-11-09 01:27:08,952 INFO L226 Difference]: Without dead ends: 33 [2024-11-09 01:27:08,953 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-09 01:27:08,954 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 01:27:08,954 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 24 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 01:27:08,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-09 01:27:08,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-09 01:27:08,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.064516129032258) internal successors, (33), 32 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:08,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2024-11-09 01:27:08,959 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 13 [2024-11-09 01:27:08,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:27:08,959 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2024-11-09 01:27:08,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 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 01:27:08,959 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2024-11-09 01:27:08,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-09 01:27:08,960 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:27:08,960 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1] [2024-11-09 01:27:08,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 01:27:09,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:27:09,161 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 01:27:09,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:27:09,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1970279786, now seen corresponding path program 2 times [2024-11-09 01:27:09,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:27:09,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74656458] [2024-11-09 01:27:09,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:09,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:27:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:09,318 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:09,318 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:27:09,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74656458] [2024-11-09 01:27:09,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74656458] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:27:09,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426209482] [2024-11-09 01:27:09,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 01:27:09,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:27:09,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:27:09,321 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:27:09,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 01:27:09,375 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-09 01:27:09,375 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:27:09,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 01:27:09,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:27:09,433 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:09,434 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:27:09,558 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:09,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426209482] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:27:09,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1336568839] [2024-11-09 01:27:09,561 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-09 01:27:09,562 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:27:09,562 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:27:09,562 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:27:09,563 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:27:09,876 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:27:10,129 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1116#(and (<= |ULTIMATE.start_main_~k~0#1| 1) (<= 1 |#StackHeapBarrier|))' at error location [2024-11-09 01:27:10,129 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:27:10,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:27:10,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-09 01:27:10,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446400917] [2024-11-09 01:27:10,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:27:10,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 01:27:10,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:27:10,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 01:27:10,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2024-11-09 01:27:10,131 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 12 states have internal predecessors, (59), 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 01:27:10,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:27:10,194 INFO L93 Difference]: Finished difference Result 74 states and 79 transitions. [2024-11-09 01:27:10,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 01:27:10,194 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 12 states have internal predecessors, (59), 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 30 [2024-11-09 01:27:10,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:27:10,195 INFO L225 Difference]: With dead ends: 74 [2024-11-09 01:27:10,195 INFO L226 Difference]: Without dead ends: 73 [2024-11-09 01:27:10,196 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2024-11-09 01:27:10,196 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 13 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:27:10,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 54 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 01:27:10,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-09 01:27:10,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 68. [2024-11-09 01:27:10,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 66 states have (on average 1.106060606060606) internal successors, (73), 67 states have internal predecessors, (73), 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 01:27:10,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions. [2024-11-09 01:27:10,206 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 30 [2024-11-09 01:27:10,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:27:10,206 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 73 transitions. [2024-11-09 01:27:10,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 12 states have internal predecessors, (59), 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 01:27:10,207 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 73 transitions. [2024-11-09 01:27:10,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 01:27:10,207 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:27:10,207 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1] [2024-11-09 01:27:10,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 01:27:10,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:27:10,408 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 01:27:10,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:27:10,409 INFO L85 PathProgramCache]: Analyzing trace with hash -949131170, now seen corresponding path program 2 times [2024-11-09 01:27:10,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:27:10,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161942911] [2024-11-09 01:27:10,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:10,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:27:10,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:10,500 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:10,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:27:10,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161942911] [2024-11-09 01:27:10,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161942911] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:27:10,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990758324] [2024-11-09 01:27:10,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 01:27:10,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:27:10,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:27:10,503 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:27:10,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 01:27:10,558 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-09 01:27:10,559 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:27:10,560 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 01:27:10,561 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:27:10,628 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:10,629 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:27:10,743 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:10,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990758324] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:27:10,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [513927974] [2024-11-09 01:27:10,746 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-09 01:27:10,747 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:27:10,747 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:27:10,747 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:27:10,748 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:27:11,084 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:27:11,330 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1479#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= 2 |ULTIMATE.start_main_~i~0#1|))' at error location [2024-11-09 01:27:11,330 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:27:11,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:27:11,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-09 01:27:11,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83013611] [2024-11-09 01:27:11,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:27:11,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 01:27:11,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:27:11,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 01:27:11,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2024-11-09 01:27:11,333 INFO L87 Difference]: Start difference. First operand 68 states and 73 transitions. Second operand has 12 states, 11 states have (on average 5.545454545454546) internal successors, (61), 12 states have internal predecessors, (61), 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 01:27:11,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:27:11,393 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2024-11-09 01:27:11,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 01:27:11,393 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.545454545454546) internal successors, (61), 12 states have internal predecessors, (61), 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 31 [2024-11-09 01:27:11,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:27:11,394 INFO L225 Difference]: With dead ends: 70 [2024-11-09 01:27:11,394 INFO L226 Difference]: Without dead ends: 69 [2024-11-09 01:27:11,395 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2024-11-09 01:27:11,395 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 01:27:11,396 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 52 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 01:27:11,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-09 01:27:11,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-09 01:27:11,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 68 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:11,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2024-11-09 01:27:11,403 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 31 [2024-11-09 01:27:11,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:27:11,403 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2024-11-09 01:27:11,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.545454545454546) internal successors, (61), 12 states have internal predecessors, (61), 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 01:27:11,403 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2024-11-09 01:27:11,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-09 01:27:11,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:27:11,405 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 1, 1, 1] [2024-11-09 01:27:11,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 01:27:11,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 01:27:11,609 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 01:27:11,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:27:11,610 INFO L85 PathProgramCache]: Analyzing trace with hash 501392076, now seen corresponding path program 3 times [2024-11-09 01:27:11,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:27:11,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344592468] [2024-11-09 01:27:11,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:11,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:27:11,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:11,892 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:11,895 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:27:11,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344592468] [2024-11-09 01:27:11,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344592468] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:27:11,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652652963] [2024-11-09 01:27:11,896 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 01:27:11,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:27:11,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:27:11,898 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:27:11,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 01:27:11,957 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 01:27:11,957 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:27:11,958 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 01:27:11,960 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:27:12,058 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:12,058 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:27:12,378 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:12,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652652963] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:27:12,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [28083816] [2024-11-09 01:27:12,381 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-09 01:27:12,381 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:27:12,381 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:27:12,381 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:27:12,382 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:27:12,657 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:27:12,922 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2061#(and (<= |ULTIMATE.start_main_~k~0#1| 1) (<= 1 |#StackHeapBarrier|))' at error location [2024-11-09 01:27:12,922 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:27:12,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:27:12,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2024-11-09 01:27:12,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323965429] [2024-11-09 01:27:12,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:27:12,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 01:27:12,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:27:12,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 01:27:12,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=630, Unknown=0, NotChecked=0, Total=930 [2024-11-09 01:27:12,927 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand has 24 states, 23 states have (on average 5.695652173913044) internal successors, (131), 24 states have internal predecessors, (131), 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 01:27:13,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:27:13,035 INFO L93 Difference]: Finished difference Result 152 states and 163 transitions. [2024-11-09 01:27:13,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 01:27:13,036 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.695652173913044) internal successors, (131), 24 states have internal predecessors, (131), 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 66 [2024-11-09 01:27:13,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:27:13,037 INFO L225 Difference]: With dead ends: 152 [2024-11-09 01:27:13,037 INFO L226 Difference]: Without dead ends: 151 [2024-11-09 01:27:13,038 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=300, Invalid=630, Unknown=0, NotChecked=0, Total=930 [2024-11-09 01:27:13,039 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 30 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:27:13,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 110 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 01:27:13,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-11-09 01:27:13,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 140. [2024-11-09 01:27:13,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 138 states have (on average 1.0942028985507246) internal successors, (151), 139 states have internal predecessors, (151), 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 01:27:13,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 151 transitions. [2024-11-09 01:27:13,051 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 151 transitions. Word has length 66 [2024-11-09 01:27:13,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:27:13,051 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 151 transitions. [2024-11-09 01:27:13,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.695652173913044) internal successors, (131), 24 states have internal predecessors, (131), 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 01:27:13,052 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 151 transitions. [2024-11-09 01:27:13,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-09 01:27:13,053 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:27:13,053 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 1, 1, 1] [2024-11-09 01:27:13,074 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 01:27:13,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 01:27:13,257 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 01:27:13,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:27:13,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1636714776, now seen corresponding path program 3 times [2024-11-09 01:27:13,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:27:13,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590166627] [2024-11-09 01:27:13,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:13,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:27:13,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:13,559 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:13,559 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:27:13,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590166627] [2024-11-09 01:27:13,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590166627] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:27:13,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958573176] [2024-11-09 01:27:13,559 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 01:27:13,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:27:13,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:27:13,561 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:27:13,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 01:27:13,616 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 01:27:13,616 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:27:13,617 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 01:27:13,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:27:13,727 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:13,728 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:27:14,077 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:14,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958573176] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:27:14,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1812578622] [2024-11-09 01:27:14,079 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-09 01:27:14,080 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:27:14,080 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:27:14,080 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:27:14,080 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:27:14,351 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:27:14,635 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2826#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= 2 |ULTIMATE.start_main_~i~0#1|))' at error location [2024-11-09 01:27:14,636 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:27:14,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:27:14,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2024-11-09 01:27:14,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700969642] [2024-11-09 01:27:14,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:27:14,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 01:27:14,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:27:14,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 01:27:14,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=632, Unknown=0, NotChecked=0, Total=930 [2024-11-09 01:27:14,640 INFO L87 Difference]: Start difference. First operand 140 states and 151 transitions. Second operand has 24 states, 23 states have (on average 5.782608695652174) internal successors, (133), 24 states have internal predecessors, (133), 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 01:27:14,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:27:14,754 INFO L93 Difference]: Finished difference Result 142 states and 153 transitions. [2024-11-09 01:27:14,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 01:27:14,755 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.782608695652174) internal successors, (133), 24 states have internal predecessors, (133), 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 67 [2024-11-09 01:27:14,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:27:14,756 INFO L225 Difference]: With dead ends: 142 [2024-11-09 01:27:14,757 INFO L226 Difference]: Without dead ends: 141 [2024-11-09 01:27:14,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=298, Invalid=632, Unknown=0, NotChecked=0, Total=930 [2024-11-09 01:27:14,758 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:27:14,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 105 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 01:27:14,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-09 01:27:14,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2024-11-09 01:27:14,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 139 states have (on average 1.014388489208633) internal successors, (141), 140 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:14,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2024-11-09 01:27:14,772 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 67 [2024-11-09 01:27:14,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:27:14,773 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2024-11-09 01:27:14,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.782608695652174) internal successors, (133), 24 states have internal predecessors, (133), 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 01:27:14,774 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2024-11-09 01:27:14,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-09 01:27:14,776 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:27:14,776 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 1, 1, 1] [2024-11-09 01:27:14,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 01:27:14,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 01:27:14,980 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 01:27:14,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:27:14,981 INFO L85 PathProgramCache]: Analyzing trace with hash -780309960, now seen corresponding path program 4 times [2024-11-09 01:27:14,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:27:14,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754120294] [2024-11-09 01:27:14,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:14,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:27:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:15,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 1474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:15,782 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:27:15,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754120294] [2024-11-09 01:27:15,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754120294] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:27:15,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734756029] [2024-11-09 01:27:15,782 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 01:27:15,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:27:15,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:27:15,784 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:27:15,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 01:27:15,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:15,861 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 01:27:15,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:27:16,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 1474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:16,098 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:27:17,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 1474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:17,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734756029] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:27:17,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1604884118] [2024-11-09 01:27:17,025 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-09 01:27:17,025 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:27:17,025 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:27:17,025 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:27:17,026 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:27:17,283 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:27:17,563 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4032#(and (<= |ULTIMATE.start_main_~k~0#1| 1) (<= 1 |#StackHeapBarrier|))' at error location [2024-11-09 01:27:17,564 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:27:17,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:27:17,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2024-11-09 01:27:17,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062579507] [2024-11-09 01:27:17,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:27:17,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-09 01:27:17,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:27:17,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-09 01:27:17,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1152, Invalid=1818, Unknown=0, NotChecked=0, Total=2970 [2024-11-09 01:27:17,567 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand has 48 states, 47 states have (on average 5.851063829787234) internal successors, (275), 48 states have internal predecessors, (275), 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 01:27:17,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:27:17,790 INFO L93 Difference]: Finished difference Result 308 states and 331 transitions. [2024-11-09 01:27:17,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-09 01:27:17,791 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.851063829787234) internal successors, (275), 48 states have internal predecessors, (275), 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 138 [2024-11-09 01:27:17,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:27:17,792 INFO L225 Difference]: With dead ends: 308 [2024-11-09 01:27:17,793 INFO L226 Difference]: Without dead ends: 307 [2024-11-09 01:27:17,794 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1152, Invalid=1818, Unknown=0, NotChecked=0, Total=2970 [2024-11-09 01:27:17,795 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 67 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:27:17,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 218 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 01:27:17,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-11-09 01:27:17,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 284. [2024-11-09 01:27:17,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 282 states have (on average 1.0886524822695036) internal successors, (307), 283 states have internal predecessors, (307), 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 01:27:17,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 307 transitions. [2024-11-09 01:27:17,828 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 307 transitions. Word has length 138 [2024-11-09 01:27:17,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:27:17,829 INFO L471 AbstractCegarLoop]: Abstraction has 284 states and 307 transitions. [2024-11-09 01:27:17,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.851063829787234) internal successors, (275), 48 states have internal predecessors, (275), 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 01:27:17,829 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 307 transitions. [2024-11-09 01:27:17,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-09 01:27:17,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:27:17,833 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 1, 1, 1] [2024-11-09 01:27:17,853 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 01:27:18,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:27:18,034 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 01:27:18,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:27:18,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1580195068, now seen corresponding path program 4 times [2024-11-09 01:27:18,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:27:18,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304859961] [2024-11-09 01:27:18,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:18,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:27:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:18,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 0 proven. 1496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:18,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:27:18,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304859961] [2024-11-09 01:27:18,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304859961] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:27:18,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230838464] [2024-11-09 01:27:18,853 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 01:27:18,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:27:18,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:27:18,855 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:27:18,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 01:27:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:18,928 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 01:27:18,931 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:27:19,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 0 proven. 1496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:19,137 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:27:20,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 0 proven. 1496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:20,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230838464] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:27:20,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1142813685] [2024-11-09 01:27:20,142 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-09 01:27:20,142 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:27:20,143 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:27:20,143 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:27:20,143 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:27:20,364 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:27:20,665 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5601#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= 2 |ULTIMATE.start_main_~i~0#1|))' at error location [2024-11-09 01:27:20,665 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:27:20,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:27:20,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2024-11-09 01:27:20,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252574706] [2024-11-09 01:27:20,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:27:20,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-09 01:27:20,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:27:20,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-09 01:27:20,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1150, Invalid=1820, Unknown=0, NotChecked=0, Total=2970 [2024-11-09 01:27:20,669 INFO L87 Difference]: Start difference. First operand 284 states and 307 transitions. Second operand has 48 states, 47 states have (on average 5.8936170212765955) internal successors, (277), 48 states have internal predecessors, (277), 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 01:27:20,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:27:20,887 INFO L93 Difference]: Finished difference Result 286 states and 309 transitions. [2024-11-09 01:27:20,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-09 01:27:20,887 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.8936170212765955) internal successors, (277), 48 states have internal predecessors, (277), 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 139 [2024-11-09 01:27:20,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:27:20,890 INFO L225 Difference]: With dead ends: 286 [2024-11-09 01:27:20,890 INFO L226 Difference]: Without dead ends: 285 [2024-11-09 01:27:20,891 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1150, Invalid=1820, Unknown=0, NotChecked=0, Total=2970 [2024-11-09 01:27:20,891 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 01:27:20,892 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 194 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 01:27:20,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-11-09 01:27:20,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2024-11-09 01:27:20,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 283 states have (on average 1.0070671378091873) internal successors, (285), 284 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:20,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 285 transitions. [2024-11-09 01:27:20,909 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 285 transitions. Word has length 139 [2024-11-09 01:27:20,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:27:20,909 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 285 transitions. [2024-11-09 01:27:20,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.8936170212765955) internal successors, (277), 48 states have internal predecessors, (277), 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 01:27:20,910 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 285 transitions. [2024-11-09 01:27:20,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2024-11-09 01:27:20,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:27:20,917 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 1, 1, 1] [2024-11-09 01:27:20,938 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 01:27:21,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:27:21,118 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 01:27:21,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:27:21,118 INFO L85 PathProgramCache]: Analyzing trace with hash -2044570352, now seen corresponding path program 5 times [2024-11-09 01:27:21,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:27:21,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691789105] [2024-11-09 01:27:21,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:21,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:27:21,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:23,681 INFO L134 CoverageAnalysis]: Checked inductivity of 6394 backedges. 0 proven. 6394 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:23,682 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:27:23,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691789105] [2024-11-09 01:27:23,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691789105] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:27:23,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796611697] [2024-11-09 01:27:23,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 01:27:23,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:27:23,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:27:23,685 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:27:23,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 01:27:23,954 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2024-11-09 01:27:23,954 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:27:23,957 INFO L255 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-09 01:27:23,960 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:27:24,325 INFO L134 CoverageAnalysis]: Checked inductivity of 6394 backedges. 0 proven. 6394 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:24,325 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:27:27,535 INFO L134 CoverageAnalysis]: Checked inductivity of 6394 backedges. 0 proven. 6394 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:27,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796611697] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:27:27,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1978413256] [2024-11-09 01:27:27,537 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-09 01:27:27,537 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:27:27,537 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:27:27,537 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:27:27,537 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:27:27,757 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:27:28,152 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8055#(and (<= |ULTIMATE.start_main_~k~0#1| 1) (<= 1 |#StackHeapBarrier|))' at error location [2024-11-09 01:27:28,152 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:27:28,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:27:28,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2024-11-09 01:27:28,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527924932] [2024-11-09 01:27:28,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:27:28,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-11-09 01:27:28,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:27:28,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-11-09 01:27:28,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4584, Invalid=5922, Unknown=0, NotChecked=0, Total=10506 [2024-11-09 01:27:28,159 INFO L87 Difference]: Start difference. First operand 285 states and 285 transitions. Second operand has 96 states, 95 states have (on average 5.926315789473684) internal successors, (563), 96 states have internal predecessors, (563), 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 01:27:28,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:27:28,695 INFO L93 Difference]: Finished difference Result 620 states and 667 transitions. [2024-11-09 01:27:28,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-09 01:27:28,696 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 5.926315789473684) internal successors, (563), 96 states have internal predecessors, (563), 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 282 [2024-11-09 01:27:28,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:27:28,698 INFO L225 Difference]: With dead ends: 620 [2024-11-09 01:27:28,698 INFO L226 Difference]: Without dead ends: 619 [2024-11-09 01:27:28,701 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 892 GetRequests, 791 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 975 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=4584, Invalid=5922, Unknown=0, NotChecked=0, Total=10506 [2024-11-09 01:27:28,701 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 153 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 01:27:28,702 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 437 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 01:27:28,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2024-11-09 01:27:28,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 572. [2024-11-09 01:27:28,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 570 states have (on average 1.0859649122807018) internal successors, (619), 571 states have internal predecessors, (619), 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 01:27:28,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 619 transitions. [2024-11-09 01:27:28,728 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 619 transitions. Word has length 282 [2024-11-09 01:27:28,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:27:28,729 INFO L471 AbstractCegarLoop]: Abstraction has 572 states and 619 transitions. [2024-11-09 01:27:28,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 5.926315789473684) internal successors, (563), 96 states have internal predecessors, (563), 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 01:27:28,730 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 619 transitions. [2024-11-09 01:27:28,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2024-11-09 01:27:28,735 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:27:28,735 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 46, 46, 1, 1, 1] [2024-11-09 01:27:28,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 01:27:28,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 01:27:28,939 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 01:27:28,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:27:28,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1042828580, now seen corresponding path program 5 times [2024-11-09 01:27:28,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:27:28,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568473396] [2024-11-09 01:27:28,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:28,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:27:29,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:31,586 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 0 proven. 6440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:31,587 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:27:31,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568473396] [2024-11-09 01:27:31,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568473396] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:27:31,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535368314] [2024-11-09 01:27:31,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 01:27:31,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:27:31,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:27:31,589 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:27:31,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 01:27:31,853 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2024-11-09 01:27:31,854 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:27:31,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-09 01:27:31,862 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:27:32,265 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 0 proven. 6440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:32,265 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:27:35,518 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 0 proven. 6440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:35,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535368314] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:27:35,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [524448973] [2024-11-09 01:27:35,520 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-09 01:27:35,520 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:27:35,521 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:27:35,521 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:27:35,521 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:27:35,722 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:27:36,099 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11232#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= 2 |ULTIMATE.start_main_~i~0#1|))' at error location [2024-11-09 01:27:36,099 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:27:36,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:27:36,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2024-11-09 01:27:36,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63264097] [2024-11-09 01:27:36,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:27:36,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-11-09 01:27:36,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:27:36,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-11-09 01:27:36,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4582, Invalid=5924, Unknown=0, NotChecked=0, Total=10506 [2024-11-09 01:27:36,106 INFO L87 Difference]: Start difference. First operand 572 states and 619 transitions. Second operand has 96 states, 95 states have (on average 5.947368421052632) internal successors, (565), 96 states have internal predecessors, (565), 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 01:27:36,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:27:36,621 INFO L93 Difference]: Finished difference Result 574 states and 621 transitions. [2024-11-09 01:27:36,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-09 01:27:36,622 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 5.947368421052632) internal successors, (565), 96 states have internal predecessors, (565), 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 283 [2024-11-09 01:27:36,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:27:36,624 INFO L225 Difference]: With dead ends: 574 [2024-11-09 01:27:36,625 INFO L226 Difference]: Without dead ends: 573 [2024-11-09 01:27:36,627 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 895 GetRequests, 794 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 974 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=4582, Invalid=5924, Unknown=0, NotChecked=0, Total=10506 [2024-11-09 01:27:36,628 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 01:27:36,628 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 389 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 01:27:36,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2024-11-09 01:27:36,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 573. [2024-11-09 01:27:36,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 571 states have (on average 1.0035026269702276) internal successors, (573), 572 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:36,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 573 transitions. [2024-11-09 01:27:36,659 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 573 transitions. Word has length 283 [2024-11-09 01:27:36,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:27:36,660 INFO L471 AbstractCegarLoop]: Abstraction has 573 states and 573 transitions. [2024-11-09 01:27:36,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 5.947368421052632) internal successors, (565), 96 states have internal predecessors, (565), 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 01:27:36,660 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 573 transitions. [2024-11-09 01:27:36,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2024-11-09 01:27:36,663 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:27:36,663 INFO L215 NwaCegarLoop]: trace histogram [95, 95, 95, 94, 94, 94, 1, 1, 1] [2024-11-09 01:27:36,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 01:27:36,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:27:36,864 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 01:27:36,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:27:36,864 INFO L85 PathProgramCache]: Analyzing trace with hash 469342912, now seen corresponding path program 6 times [2024-11-09 01:27:36,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:27:36,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521590567] [2024-11-09 01:27:36,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:36,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:27:37,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:45,636 INFO L134 CoverageAnalysis]: Checked inductivity of 26602 backedges. 0 proven. 26602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:45,637 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:27:45,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521590567] [2024-11-09 01:27:45,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521590567] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:27:45,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121807758] [2024-11-09 01:27:45,637 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 01:27:45,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:27:45,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:27:45,639 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:27:45,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 01:27:45,839 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 01:27:45,839 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:27:45,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 969 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-09 01:27:45,854 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:27:46,561 INFO L134 CoverageAnalysis]: Checked inductivity of 26602 backedges. 0 proven. 26602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:46,561 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:27:58,956 INFO L134 CoverageAnalysis]: Checked inductivity of 26602 backedges. 0 proven. 26602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:58,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121807758] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:27:58,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1823404749] [2024-11-09 01:27:58,958 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-09 01:27:58,959 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:27:58,959 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:27:58,959 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:27:58,960 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:27:59,172 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:27:59,876 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16182#(and (<= |ULTIMATE.start_main_~k~0#1| 1) (<= 1 |#StackHeapBarrier|))' at error location [2024-11-09 01:27:59,876 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:27:59,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:27:59,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2024-11-09 01:27:59,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60942674] [2024-11-09 01:27:59,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:27:59,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2024-11-09 01:27:59,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:27:59,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2024-11-09 01:27:59,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18360, Invalid=21042, Unknown=0, NotChecked=0, Total=39402 [2024-11-09 01:27:59,893 INFO L87 Difference]: Start difference. First operand 573 states and 573 transitions. Second operand has 192 states, 191 states have (on average 5.963350785340314) internal successors, (1139), 192 states have internal predecessors, (1139), 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 01:28:02,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:28:02,432 INFO L93 Difference]: Finished difference Result 1244 states and 1339 transitions. [2024-11-09 01:28:02,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2024-11-09 01:28:02,433 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 5.963350785340314) internal successors, (1139), 192 states have internal predecessors, (1139), 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 570 [2024-11-09 01:28:02,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:28:02,436 INFO L225 Difference]: With dead ends: 1244 [2024-11-09 01:28:02,436 INFO L226 Difference]: Without dead ends: 1243 [2024-11-09 01:28:02,441 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1804 GetRequests, 1607 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1983 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=18360, Invalid=21042, Unknown=0, NotChecked=0, Total=39402 [2024-11-09 01:28:02,442 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 382 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 01:28:02,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 867 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 01:28:02,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2024-11-09 01:28:02,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1148. [2024-11-09 01:28:02,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1148 states, 1146 states have (on average 1.0846422338568935) internal successors, (1243), 1147 states have internal predecessors, (1243), 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 01:28:02,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 1243 transitions. [2024-11-09 01:28:02,486 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 1243 transitions. Word has length 570 [2024-11-09 01:28:02,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:28:02,487 INFO L471 AbstractCegarLoop]: Abstraction has 1148 states and 1243 transitions. [2024-11-09 01:28:02,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 5.963350785340314) internal successors, (1139), 192 states have internal predecessors, (1139), 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 01:28:02,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 1243 transitions. [2024-11-09 01:28:02,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2024-11-09 01:28:02,493 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:28:02,493 INFO L215 NwaCegarLoop]: trace histogram [95, 95, 95, 95, 94, 94, 1, 1, 1] [2024-11-09 01:28:02,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 01:28:02,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:28:02,699 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 01:28:02,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:28:02,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1664728436, now seen corresponding path program 6 times [2024-11-09 01:28:02,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:28:02,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826054618] [2024-11-09 01:28:02,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:28:02,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:28:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:28:11,758 INFO L134 CoverageAnalysis]: Checked inductivity of 26696 backedges. 0 proven. 26696 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:28:11,759 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:28:11,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826054618] [2024-11-09 01:28:11,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826054618] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:28:11,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230529854] [2024-11-09 01:28:11,759 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 01:28:11,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:28:11,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:28:11,761 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:28:11,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 01:28:11,988 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 01:28:11,988 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:28:11,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-09 01:28:12,002 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:28:13,100 INFO L134 CoverageAnalysis]: Checked inductivity of 26696 backedges. 0 proven. 26696 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:28:13,100 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:28:28,346 INFO L134 CoverageAnalysis]: Checked inductivity of 26696 backedges. 0 proven. 26696 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:28:28,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230529854] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:28:28,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2052495140] [2024-11-09 01:28:28,349 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-09 01:28:28,349 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:28:28,350 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:28:28,350 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:28:28,350 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:28:28,556 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:28:29,251 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22575#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= 2 |ULTIMATE.start_main_~i~0#1|))' at error location [2024-11-09 01:28:29,251 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:28:29,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:28:29,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2024-11-09 01:28:29,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815067656] [2024-11-09 01:28:29,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:28:29,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2024-11-09 01:28:29,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:28:29,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2024-11-09 01:28:29,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18358, Invalid=21044, Unknown=0, NotChecked=0, Total=39402 [2024-11-09 01:28:29,264 INFO L87 Difference]: Start difference. First operand 1148 states and 1243 transitions. Second operand has 192 states, 191 states have (on average 5.973821989528796) internal successors, (1141), 192 states have internal predecessors, (1141), 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 01:28:31,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:28:31,489 INFO L93 Difference]: Finished difference Result 1150 states and 1245 transitions. [2024-11-09 01:28:31,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2024-11-09 01:28:31,491 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 5.973821989528796) internal successors, (1141), 192 states have internal predecessors, (1141), 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 571 [2024-11-09 01:28:31,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:28:31,496 INFO L225 Difference]: With dead ends: 1150 [2024-11-09 01:28:31,496 INFO L226 Difference]: Without dead ends: 1149 [2024-11-09 01:28:31,499 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1807 GetRequests, 1610 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1982 ImplicationChecksByTransitivity, 19.8s TimeCoverageRelationStatistics Valid=18358, Invalid=21044, Unknown=0, NotChecked=0, Total=39402 [2024-11-09 01:28:31,501 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 01:28:31,501 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 773 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 01:28:31,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2024-11-09 01:28:31,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1149. [2024-11-09 01:28:31,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1149 states, 1147 states have (on average 1.001743679163034) internal successors, (1149), 1148 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:28:31,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 1149 transitions. [2024-11-09 01:28:31,559 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 1149 transitions. Word has length 571 [2024-11-09 01:28:31,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:28:31,560 INFO L471 AbstractCegarLoop]: Abstraction has 1149 states and 1149 transitions. [2024-11-09 01:28:31,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 5.973821989528796) internal successors, (1141), 192 states have internal predecessors, (1141), 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 01:28:31,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 1149 transitions. [2024-11-09 01:28:31,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1147 [2024-11-09 01:28:31,573 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:28:31,574 INFO L215 NwaCegarLoop]: trace histogram [191, 191, 191, 190, 190, 190, 1, 1, 1] [2024-11-09 01:28:31,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-09 01:28:31,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-09 01:28:31,774 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 01:28:31,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:28:31,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1348331040, now seen corresponding path program 7 times [2024-11-09 01:28:31,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:28:31,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747848833] [2024-11-09 01:28:31,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:28:31,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:28:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:29:05,423 INFO L134 CoverageAnalysis]: Checked inductivity of 108490 backedges. 0 proven. 108490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:29:05,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:29:05,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747848833] [2024-11-09 01:29:05,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747848833] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:29:05,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359390303] [2024-11-09 01:29:05,424 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 01:29:05,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:29:05,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:29:05,425 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:29:05,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 01:29:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:29:05,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 1929 conjuncts, 192 conjuncts are in the unsatisfiable core [2024-11-09 01:29:05,781 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:29:07,164 INFO L134 CoverageAnalysis]: Checked inductivity of 108490 backedges. 0 proven. 108490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:29:07,164 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:29:53,039 INFO L134 CoverageAnalysis]: Checked inductivity of 108490 backedges. 0 proven. 108490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:29:53,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359390303] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:29:53,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [7221874] [2024-11-09 01:29:53,040 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-09 01:29:53,040 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:29:53,041 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:29:53,041 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:29:53,041 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:29:53,222 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:29:54,274 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '32517#(and (<= |ULTIMATE.start_main_~k~0#1| 1) (<= 1 |#StackHeapBarrier|))' at error location [2024-11-09 01:29:54,274 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:29:54,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:29:54,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 383 [2024-11-09 01:29:54,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303031657] [2024-11-09 01:29:54,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:29:54,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2024-11-09 01:29:54,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:29:54,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2024-11-09 01:29:54,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73560, Invalid=78930, Unknown=0, NotChecked=0, Total=152490 [2024-11-09 01:29:54,303 INFO L87 Difference]: Start difference. First operand 1149 states and 1149 transitions. Second operand has 384 states, 383 states have (on average 5.981723237597911) internal successors, (2291), 384 states have internal predecessors, (2291), 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 01:30:07,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:30:07,872 INFO L93 Difference]: Finished difference Result 2492 states and 2683 transitions. [2024-11-09 01:30:07,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2024-11-09 01:30:07,874 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 5.981723237597911) internal successors, (2291), 384 states have internal predecessors, (2291), 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 1146 [2024-11-09 01:30:07,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:30:07,882 INFO L225 Difference]: With dead ends: 2492 [2024-11-09 01:30:07,882 INFO L226 Difference]: Without dead ends: 2491 [2024-11-09 01:30:07,892 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3628 GetRequests, 3239 SyntacticMatches, 0 SemanticMatches, 389 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3999 ImplicationChecksByTransitivity, 60.3s TimeCoverageRelationStatistics Valid=73560, Invalid=78930, Unknown=0, NotChecked=0, Total=152490 [2024-11-09 01:30:07,893 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 950 mSDsluCounter, 1725 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 01:30:07,893 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [950 Valid, 1732 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 01:30:07,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2491 states. [2024-11-09 01:30:07,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2491 to 2300. [2024-11-09 01:30:07,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2300 states, 2298 states have (on average 1.0839860748476937) internal successors, (2491), 2299 states have internal predecessors, (2491), 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 01:30:07,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2300 states to 2300 states and 2491 transitions. [2024-11-09 01:30:07,977 INFO L78 Accepts]: Start accepts. Automaton has 2300 states and 2491 transitions. Word has length 1146 [2024-11-09 01:30:07,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:30:07,979 INFO L471 AbstractCegarLoop]: Abstraction has 2300 states and 2491 transitions. [2024-11-09 01:30:07,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 5.981723237597911) internal successors, (2291), 384 states have internal predecessors, (2291), 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 01:30:07,980 INFO L276 IsEmpty]: Start isEmpty. Operand 2300 states and 2491 transitions. [2024-11-09 01:30:07,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1148 [2024-11-09 01:30:07,992 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:30:07,993 INFO L215 NwaCegarLoop]: trace histogram [191, 191, 191, 191, 190, 190, 1, 1, 1] [2024-11-09 01:30:08,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 01:30:08,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-09 01:30:08,193 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 01:30:08,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:30:08,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1151410668, now seen corresponding path program 7 times [2024-11-09 01:30:08,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:30:08,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520460108] [2024-11-09 01:30:08,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:30:08,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:30:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:30:51,552 INFO L134 CoverageAnalysis]: Checked inductivity of 108680 backedges. 0 proven. 108680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:30:51,552 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:30:51,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520460108] [2024-11-09 01:30:51,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520460108] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:30:51,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054875404] [2024-11-09 01:30:51,553 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 01:30:51,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:30:51,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:30:51,555 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:30:51,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 01:30:51,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:30:51,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 1932 conjuncts, 192 conjuncts are in the unsatisfiable core [2024-11-09 01:30:52,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:30:53,548 INFO L134 CoverageAnalysis]: Checked inductivity of 108680 backedges. 0 proven. 108680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:30:53,548 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:31:51,380 INFO L134 CoverageAnalysis]: Checked inductivity of 108680 backedges. 0 proven. 108680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:31:51,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054875404] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:31:51,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [939254494] [2024-11-09 01:31:51,382 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-09 01:31:51,382 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:31:51,383 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:31:51,383 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:31:51,383 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:31:51,545 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:31:52,861 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '45342#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= 2 |ULTIMATE.start_main_~i~0#1|))' at error location [2024-11-09 01:31:52,862 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:31:52,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:31:52,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 383 [2024-11-09 01:31:52,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283504891] [2024-11-09 01:31:52,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:31:52,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2024-11-09 01:31:52,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:31:52,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2024-11-09 01:31:52,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73558, Invalid=78932, Unknown=0, NotChecked=0, Total=152490 [2024-11-09 01:31:52,926 INFO L87 Difference]: Start difference. First operand 2300 states and 2491 transitions. Second operand has 384 states, 383 states have (on average 5.986945169712794) internal successors, (2293), 384 states have internal predecessors, (2293), 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 01:32:03,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:32:03,009 INFO L93 Difference]: Finished difference Result 2302 states and 2493 transitions. [2024-11-09 01:32:03,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2024-11-09 01:32:03,010 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 5.986945169712794) internal successors, (2293), 384 states have internal predecessors, (2293), 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 1147 [2024-11-09 01:32:03,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:32:03,015 INFO L225 Difference]: With dead ends: 2302 [2024-11-09 01:32:03,015 INFO L226 Difference]: Without dead ends: 2301 [2024-11-09 01:32:03,025 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3631 GetRequests, 3242 SyntacticMatches, 0 SemanticMatches, 389 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3998 ImplicationChecksByTransitivity, 76.5s TimeCoverageRelationStatistics Valid=73558, Invalid=78932, Unknown=0, NotChecked=0, Total=152490 [2024-11-09 01:32:03,025 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 1534 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1541 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 01:32:03,026 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1541 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 01:32:03,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2301 states. [2024-11-09 01:32:03,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2301 to 2301. [2024-11-09 01:32:03,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2301 states, 2299 states have (on average 1.0008699434536754) internal successors, (2301), 2300 states have internal predecessors, (2301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:32:03,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2301 states to 2301 states and 2301 transitions. [2024-11-09 01:32:03,117 INFO L78 Accepts]: Start accepts. Automaton has 2301 states and 2301 transitions. Word has length 1147 [2024-11-09 01:32:03,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:32:03,118 INFO L471 AbstractCegarLoop]: Abstraction has 2301 states and 2301 transitions. [2024-11-09 01:32:03,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 5.986945169712794) internal successors, (2293), 384 states have internal predecessors, (2293), 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 01:32:03,119 INFO L276 IsEmpty]: Start isEmpty. Operand 2301 states and 2301 transitions. [2024-11-09 01:32:03,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2299 [2024-11-09 01:32:03,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:32:03,160 INFO L215 NwaCegarLoop]: trace histogram [383, 383, 383, 382, 382, 382, 1, 1, 1] [2024-11-09 01:32:03,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-09 01:32:03,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-09 01:32:03,361 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 01:32:03,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:32:03,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1879212832, now seen corresponding path program 8 times [2024-11-09 01:32:03,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:32:03,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143817621] [2024-11-09 01:32:03,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:32:03,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:32:04,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:35:40,087 INFO L134 CoverageAnalysis]: Checked inductivity of 438154 backedges. 0 proven. 438154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:35:40,087 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:35:40,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143817621] [2024-11-09 01:35:40,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143817621] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:35:40,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649756705] [2024-11-09 01:35:40,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 01:35:40,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:35:40,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:35:40,090 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:35:40,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f24a2c-bd1d-4d04-8f3f-b713a6fee8fb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 01:36:04,396 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 383 check-sat command(s) [2024-11-09 01:36:04,396 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:36:04,425 INFO L255 TraceCheckSpWp]: Trace formula consists of 3849 conjuncts, 384 conjuncts are in the unsatisfiable core [2024-11-09 01:36:04,455 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:36:07,379 INFO L134 CoverageAnalysis]: Checked inductivity of 438154 backedges. 0 proven. 438154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:36:07,379 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:39:49,458 INFO L134 CoverageAnalysis]: Checked inductivity of 438154 backedges. 0 proven. 438154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:39:49,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649756705] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:39:49,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1918599894] [2024-11-09 01:39:49,460 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-09 01:39:49,460 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:39:49,461 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:39:49,461 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:39:49,461 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:39:49,591 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:39:51,481 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '65268#(and (<= |ULTIMATE.start_main_~k~0#1| 1) (<= 1 |#StackHeapBarrier|))' at error location [2024-11-09 01:39:51,481 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:39:51,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:39:51,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [384, 384, 384] total 767 [2024-11-09 01:39:51,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905789717] [2024-11-09 01:39:51,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:39:51,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 768 states [2024-11-09 01:39:51,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:39:51,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 768 interpolants. [2024-11-09 01:39:51,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294552, Invalid=305298, Unknown=0, NotChecked=0, Total=599850 [2024-11-09 01:39:51,574 INFO L87 Difference]: Start difference. First operand 2301 states and 2301 transitions. Second operand has 768 states, 767 states have (on average 5.990873533246415) internal successors, (4595), 768 states have internal predecessors, (4595), 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)