./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-multidimensional/init-3-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-multidimensional/init-3-u.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ --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 385b06dfd41f8b2cf291934cb4635d07bfe2a63001fa162165126d7b890c1d72 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:00:10,917 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:00:10,994 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-19 05:00:10,999 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:00:11,000 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:00:11,028 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:00:11,029 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:00:11,030 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:00:11,031 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:00:11,032 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:00:11,033 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:00:11,033 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:00:11,034 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:00:11,035 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:00:11,036 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:00:11,037 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:00:11,038 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:00:11,038 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:00:11,039 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:00:11,040 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:00:11,041 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:00:11,042 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:00:11,043 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:00:11,043 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:00:11,044 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:00:11,045 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:00:11,045 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:00:11,046 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:00:11,047 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:00:11,048 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:00:11,048 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:00:11,049 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:00:11,049 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:00:11,050 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:00:11,051 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:00:11,051 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:00:11,052 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:00:11,052 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:00:11,053 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:00:11,054 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:00:11,054 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:00:11,055 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:00:11,056 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:00:11,056 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:00:11,057 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:00:11,057 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:00:11,058 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:00:11,058 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_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 385b06dfd41f8b2cf291934cb4635d07bfe2a63001fa162165126d7b890c1d72 [2023-11-19 05:00:11,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:00:11,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:00:11,389 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:00:11,392 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:00:11,394 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:00:11,395 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/array-multidimensional/init-3-u.c [2023-11-19 05:00:14,803 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:00:15,051 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:00:15,052 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/sv-benchmarks/c/array-multidimensional/init-3-u.c [2023-11-19 05:00:15,062 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/data/7ca314058/97541e0efc334d159adbe4e932f9cbae/FLAG463acd7aa [2023-11-19 05:00:15,084 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/data/7ca314058/97541e0efc334d159adbe4e932f9cbae [2023-11-19 05:00:15,095 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:00:15,099 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:00:15,103 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:00:15,103 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:00:15,110 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:00:15,110 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:00:15" (1/1) ... [2023-11-19 05:00:15,112 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b1bd787 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:15, skipping insertion in model container [2023-11-19 05:00:15,113 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:00:15" (1/1) ... [2023-11-19 05:00:15,142 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:00:15,326 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:00:15,336 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:00:15,357 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:00:15,374 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:00:15,375 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:15 WrapperNode [2023-11-19 05:00:15,375 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:00:15,376 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:00:15,377 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:00:15,377 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:00:15,386 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:15" (1/1) ... [2023-11-19 05:00:15,408 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:15" (1/1) ... [2023-11-19 05:00:15,448 INFO L138 Inliner]: procedures = 14, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 89 [2023-11-19 05:00:15,449 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:00:15,450 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:00:15,450 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:00:15,450 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:00:15,461 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:15" (1/1) ... [2023-11-19 05:00:15,461 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:15" (1/1) ... [2023-11-19 05:00:15,466 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:15" (1/1) ... [2023-11-19 05:00:15,466 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:15" (1/1) ... [2023-11-19 05:00:15,483 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:15" (1/1) ... [2023-11-19 05:00:15,489 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:15" (1/1) ... [2023-11-19 05:00:15,500 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:15" (1/1) ... [2023-11-19 05:00:15,502 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:15" (1/1) ... [2023-11-19 05:00:15,505 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:00:15,508 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:00:15,508 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:00:15,509 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:00:15,510 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:15" (1/1) ... [2023-11-19 05:00:15,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:00:15,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:00:15,550 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:00:15,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:00:15,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:00:15,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:00:15,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:00:15,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:00:15,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:00:15,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:00:15,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:00:15,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:00:15,702 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:00:15,705 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:00:15,957 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:00:16,012 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:00:16,013 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-19 05:00:16,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:00:16 BoogieIcfgContainer [2023-11-19 05:00:16,018 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:00:16,021 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:00:16,021 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:00:16,025 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:00:16,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:00:15" (1/3) ... [2023-11-19 05:00:16,026 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c13313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:00:16, skipping insertion in model container [2023-11-19 05:00:16,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:15" (2/3) ... [2023-11-19 05:00:16,027 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c13313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:00:16, skipping insertion in model container [2023-11-19 05:00:16,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:00:16" (3/3) ... [2023-11-19 05:00:16,029 INFO L112 eAbstractionObserver]: Analyzing ICFG init-3-u.c [2023-11-19 05:00:16,046 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:00:16,047 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-19 05:00:16,096 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:00:16,104 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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;@38a05b71, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:00:16,104 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-19 05:00:16,108 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 31 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:00:16,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 05:00:16,114 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:16,114 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 05:00:16,115 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 05:00:16,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:16,121 INFO L85 PathProgramCache]: Analyzing trace with hash 4423713, now seen corresponding path program 1 times [2023-11-19 05:00:16,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:00:16,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992461924] [2023-11-19 05:00:16,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:16,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:00:16,227 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:00:16,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1323875392] [2023-11-19 05:00:16,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:16,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:00:16,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:00:16,231 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:00:16,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:00:16,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:16,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:00:16,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:00:16,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:00:16,419 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:00:16,420 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:00:16,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992461924] [2023-11-19 05:00:16,420 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:00:16,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323875392] [2023-11-19 05:00:16,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323875392] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:00:16,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:00:16,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:00:16,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933562070] [2023-11-19 05:00:16,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:00:16,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:00:16,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:00:16,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:00:16,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:00:16,462 INFO L87 Difference]: Start difference. First operand has 32 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 31 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 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) [2023-11-19 05:00:16,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:00:16,557 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2023-11-19 05:00:16,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:00:16,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-19 05:00:16,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:00:16,569 INFO L225 Difference]: With dead ends: 32 [2023-11-19 05:00:16,569 INFO L226 Difference]: Without dead ends: 29 [2023-11-19 05:00:16,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:00:16,588 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:00:16,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 18 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:00:16,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-11-19 05:00:16,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-11-19 05:00:16,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 28 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) [2023-11-19 05:00:16,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2023-11-19 05:00:16,621 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 4 [2023-11-19 05:00:16,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:00:16,621 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2023-11-19 05:00:16,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:00:16,622 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2023-11-19 05:00:16,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 05:00:16,623 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:16,623 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 05:00:16,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 05:00:16,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 05:00:16,827 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 05:00:16,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:16,828 INFO L85 PathProgramCache]: Analyzing trace with hash 137135180, now seen corresponding path program 1 times [2023-11-19 05:00:16,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:00:16,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511334241] [2023-11-19 05:00:16,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:16,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:00:16,838 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:00:16,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [313725767] [2023-11-19 05:00:16,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:16,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:00:16,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:00:16,841 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:00:16,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:00:16,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:16,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:00:16,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:00:16,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:00:16,935 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:00:16,935 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:00:16,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511334241] [2023-11-19 05:00:16,936 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:00:16,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313725767] [2023-11-19 05:00:16,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313725767] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:00:16,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:00:16,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:00:16,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828999552] [2023-11-19 05:00:16,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:00:16,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:00:16,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:00:16,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:00:16,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:00:16,941 INFO L87 Difference]: Start difference. First operand 29 states and 34 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) [2023-11-19 05:00:17,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:00:17,004 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2023-11-19 05:00:17,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:00:17,005 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 [2023-11-19 05:00:17,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:00:17,006 INFO L225 Difference]: With dead ends: 57 [2023-11-19 05:00:17,007 INFO L226 Difference]: Without dead ends: 55 [2023-11-19 05:00:17,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:00:17,009 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 25 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:00:17,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 38 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:00:17,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-11-19 05:00:17,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 47. [2023-11-19 05:00:17,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 37 states have (on average 1.7567567567567568) internal successors, (65), 46 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:00:17,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 65 transitions. [2023-11-19 05:00:17,022 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 65 transitions. Word has length 5 [2023-11-19 05:00:17,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:00:17,023 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 65 transitions. [2023-11-19 05:00:17,023 INFO L496 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) [2023-11-19 05:00:17,024 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 65 transitions. [2023-11-19 05:00:17,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 05:00:17,024 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:17,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 05:00:17,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:00:17,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:00:17,241 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 05:00:17,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:17,242 INFO L85 PathProgramCache]: Analyzing trace with hash 137032127, now seen corresponding path program 1 times [2023-11-19 05:00:17,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:00:17,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38335336] [2023-11-19 05:00:17,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:17,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:00:17,251 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:00:17,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [418083825] [2023-11-19 05:00:17,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:17,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:00:17,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:00:17,261 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:00:17,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 05:00:17,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:17,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:00:17,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:00:17,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:00:17,350 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:00:17,350 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:00:17,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38335336] [2023-11-19 05:00:17,351 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:00:17,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418083825] [2023-11-19 05:00:17,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418083825] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:00:17,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:00:17,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:00:17,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599638111] [2023-11-19 05:00:17,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:00:17,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:00:17,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:00:17,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:00:17,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:00:17,354 INFO L87 Difference]: Start difference. First operand 47 states and 65 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) [2023-11-19 05:00:17,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:00:17,394 INFO L93 Difference]: Finished difference Result 47 states and 65 transitions. [2023-11-19 05:00:17,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:00:17,395 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 [2023-11-19 05:00:17,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:00:17,396 INFO L225 Difference]: With dead ends: 47 [2023-11-19 05:00:17,396 INFO L226 Difference]: Without dead ends: 45 [2023-11-19 05:00:17,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:00:17,398 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:00:17,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 16 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:00:17,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-11-19 05:00:17,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-11-19 05:00:17,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 37 states have (on average 1.6486486486486487) internal successors, (61), 44 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) [2023-11-19 05:00:17,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 61 transitions. [2023-11-19 05:00:17,410 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 61 transitions. Word has length 5 [2023-11-19 05:00:17,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:00:17,410 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 61 transitions. [2023-11-19 05:00:17,410 INFO L496 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) [2023-11-19 05:00:17,410 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 61 transitions. [2023-11-19 05:00:17,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 05:00:17,411 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:17,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 05:00:17,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 05:00:17,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:00:17,627 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 05:00:17,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:17,627 INFO L85 PathProgramCache]: Analyzing trace with hash 137028958, now seen corresponding path program 1 times [2023-11-19 05:00:17,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:00:17,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540287302] [2023-11-19 05:00:17,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:17,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:00:17,636 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:00:17,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1820489104] [2023-11-19 05:00:17,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:17,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:00:17,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:00:17,639 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:00:17,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 05:00:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:17,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:00:17,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:00:17,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:00:17,709 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:00:17,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:00:17,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540287302] [2023-11-19 05:00:17,713 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:00:17,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820489104] [2023-11-19 05:00:17,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820489104] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:00:17,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:00:17,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:00:17,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253369456] [2023-11-19 05:00:17,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:00:17,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:00:17,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:00:17,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:00:17,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:00:17,717 INFO L87 Difference]: Start difference. First operand 45 states and 61 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) [2023-11-19 05:00:17,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:00:17,772 INFO L93 Difference]: Finished difference Result 45 states and 61 transitions. [2023-11-19 05:00:17,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:00:17,773 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 [2023-11-19 05:00:17,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:00:17,775 INFO L225 Difference]: With dead ends: 45 [2023-11-19 05:00:17,776 INFO L226 Difference]: Without dead ends: 43 [2023-11-19 05:00:17,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:00:17,784 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:00:17,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 16 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:00:17,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-19 05:00:17,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2023-11-19 05:00:17,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 42 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:00:17,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2023-11-19 05:00:17,811 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 5 [2023-11-19 05:00:17,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:00:17,812 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2023-11-19 05:00:17,812 INFO L496 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) [2023-11-19 05:00:17,812 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2023-11-19 05:00:17,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 05:00:17,813 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:17,814 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 05:00:17,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 05:00:18,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:00:18,015 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 05:00:18,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:18,015 INFO L85 PathProgramCache]: Analyzing trace with hash -46971289, now seen corresponding path program 1 times [2023-11-19 05:00:18,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:00:18,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173957054] [2023-11-19 05:00:18,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:18,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:00:18,022 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:00:18,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1579498900] [2023-11-19 05:00:18,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:18,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:00:18,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:00:18,027 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:00:18,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 05:00:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:18,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:00:18,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:00:18,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:00:18,106 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:00:18,106 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:00:18,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173957054] [2023-11-19 05:00:18,106 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:00:18,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579498900] [2023-11-19 05:00:18,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579498900] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:00:18,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:00:18,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:00:18,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877277875] [2023-11-19 05:00:18,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:00:18,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:00:18,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:00:18,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:00:18,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:00:18,109 INFO L87 Difference]: Start difference. First operand 43 states and 57 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) [2023-11-19 05:00:18,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:00:18,164 INFO L93 Difference]: Finished difference Result 83 states and 110 transitions. [2023-11-19 05:00:18,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:00:18,165 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 [2023-11-19 05:00:18,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:00:18,166 INFO L225 Difference]: With dead ends: 83 [2023-11-19 05:00:18,166 INFO L226 Difference]: Without dead ends: 81 [2023-11-19 05:00:18,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:00:18,168 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 19 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:00:18,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 28 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:00:18,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-11-19 05:00:18,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 67. [2023-11-19 05:00:18,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 61 states have (on average 1.5245901639344261) internal successors, (93), 66 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:00:18,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 93 transitions. [2023-11-19 05:00:18,182 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 93 transitions. Word has length 6 [2023-11-19 05:00:18,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:00:18,183 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 93 transitions. [2023-11-19 05:00:18,183 INFO L496 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) [2023-11-19 05:00:18,183 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 93 transitions. [2023-11-19 05:00:18,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 05:00:18,184 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:18,184 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 05:00:18,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 05:00:18,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:00:18,406 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 05:00:18,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:18,407 INFO L85 PathProgramCache]: Analyzing trace with hash -47069535, now seen corresponding path program 1 times [2023-11-19 05:00:18,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:00:18,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709546712] [2023-11-19 05:00:18,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:18,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:00:18,416 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:00:18,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [269963127] [2023-11-19 05:00:18,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:18,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:00:18,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:00:18,419 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:00:18,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 05:00:18,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:18,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:00:18,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:00:18,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:00:18,495 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:00:18,495 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:00:18,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709546712] [2023-11-19 05:00:18,495 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:00:18,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269963127] [2023-11-19 05:00:18,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269963127] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:00:18,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:00:18,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:00:18,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148566860] [2023-11-19 05:00:18,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:00:18,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:00:18,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:00:18,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:00:18,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:00:18,498 INFO L87 Difference]: Start difference. First operand 67 states and 93 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) [2023-11-19 05:00:18,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:00:18,566 INFO L93 Difference]: Finished difference Result 127 states and 174 transitions. [2023-11-19 05:00:18,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:00:18,567 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 [2023-11-19 05:00:18,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:00:18,573 INFO L225 Difference]: With dead ends: 127 [2023-11-19 05:00:18,574 INFO L226 Difference]: Without dead ends: 125 [2023-11-19 05:00:18,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:00:18,575 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 18 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:00:18,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 30 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:00:18,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-11-19 05:00:18,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 91. [2023-11-19 05:00:18,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 85 states have (on average 1.4705882352941178) internal successors, (125), 90 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:00:18,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 125 transitions. [2023-11-19 05:00:18,604 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 125 transitions. Word has length 6 [2023-11-19 05:00:18,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:00:18,604 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 125 transitions. [2023-11-19 05:00:18,604 INFO L496 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) [2023-11-19 05:00:18,604 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 125 transitions. [2023-11-19 05:00:18,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 05:00:18,606 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:18,606 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1] [2023-11-19 05:00:18,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 05:00:18,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:00:18,810 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 05:00:18,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:18,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1519289221, now seen corresponding path program 1 times [2023-11-19 05:00:18,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:00:18,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945159732] [2023-11-19 05:00:18,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:18,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:00:18,817 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:00:18,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2011102692] [2023-11-19 05:00:18,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:18,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:00:18,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:00:18,819 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:00:18,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 05:00:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:18,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:00:18,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:00:18,919 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:00:18,919 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:00:18,920 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:00:18,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945159732] [2023-11-19 05:00:18,920 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:00:18,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011102692] [2023-11-19 05:00:18,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011102692] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:00:18,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:00:18,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:00:18,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139172665] [2023-11-19 05:00:18,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:00:18,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:00:18,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:00:18,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:00:18,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:00:18,922 INFO L87 Difference]: Start difference. First operand 91 states and 125 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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) [2023-11-19 05:00:18,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:00:18,990 INFO L93 Difference]: Finished difference Result 164 states and 220 transitions. [2023-11-19 05:00:18,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:00:18,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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 9 [2023-11-19 05:00:18,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:00:18,992 INFO L225 Difference]: With dead ends: 164 [2023-11-19 05:00:18,992 INFO L226 Difference]: Without dead ends: 93 [2023-11-19 05:00:18,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:00:18,994 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 60 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:00:18,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 26 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:00:18,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-11-19 05:00:19,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2023-11-19 05:00:19,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 85 states have (on average 1.423529411764706) internal successors, (121), 90 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:00:19,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 121 transitions. [2023-11-19 05:00:19,009 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 121 transitions. Word has length 9 [2023-11-19 05:00:19,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:00:19,010 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 121 transitions. [2023-11-19 05:00:19,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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) [2023-11-19 05:00:19,010 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 121 transitions. [2023-11-19 05:00:19,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 05:00:19,011 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:19,011 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-19 05:00:19,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-19 05:00:19,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:00:19,232 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 05:00:19,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:19,232 INFO L85 PathProgramCache]: Analyzing trace with hash -2089120036, now seen corresponding path program 1 times [2023-11-19 05:00:19,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:00:19,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957190886] [2023-11-19 05:00:19,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:19,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:00:19,246 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:00:19,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2081114195] [2023-11-19 05:00:19,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:19,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:00:19,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:00:19,250 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:00:19,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 05:00:19,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:19,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:00:19,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:00:19,336 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:00:19,336 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:00:19,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:00:19,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:00:19,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957190886] [2023-11-19 05:00:19,367 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:00:19,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081114195] [2023-11-19 05:00:19,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081114195] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:00:19,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [213369620] [2023-11-19 05:00:19,388 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-19 05:00:19,388 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:00:19,392 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:00:19,398 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:00:19,399 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:00:20,165 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:00:20,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [213369620] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:00:20,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:00:20,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 8 [2023-11-19 05:00:20,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606755402] [2023-11-19 05:00:20,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:00:20,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:00:20,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:00:20,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:00:20,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-11-19 05:00:20,474 INFO L87 Difference]: Start difference. First operand 91 states and 121 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2023-11-19 05:00:20,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:00:20,765 INFO L93 Difference]: Finished difference Result 173 states and 229 transitions. [2023-11-19 05:00:20,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:00:20,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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 9 [2023-11-19 05:00:20,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:00:20,766 INFO L225 Difference]: With dead ends: 173 [2023-11-19 05:00:20,766 INFO L226 Difference]: Without dead ends: 91 [2023-11-19 05:00:20,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-19 05:00:20,768 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:00:20,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 16 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:00:20,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-19 05:00:20,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2023-11-19 05:00:20,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 83 states have (on average 1.3975903614457832) internal successors, (116), 88 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:00:20,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 116 transitions. [2023-11-19 05:00:20,791 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 116 transitions. Word has length 9 [2023-11-19 05:00:20,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:00:20,791 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 116 transitions. [2023-11-19 05:00:20,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2023-11-19 05:00:20,792 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 116 transitions. [2023-11-19 05:00:20,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 05:00:20,794 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:20,794 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:00:20,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 05:00:21,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:00:21,018 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 05:00:21,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:21,019 INFO L85 PathProgramCache]: Analyzing trace with hash 868814099, now seen corresponding path program 1 times [2023-11-19 05:00:21,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:00:21,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540661715] [2023-11-19 05:00:21,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:21,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:00:21,031 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:00:21,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [949915524] [2023-11-19 05:00:21,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:21,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:00:21,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:00:21,032 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:00:21,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 05:00:21,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:21,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:00:21,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:00:21,138 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:00:21,138 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:00:21,173 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:00:21,173 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:00:21,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540661715] [2023-11-19 05:00:21,174 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:00:21,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949915524] [2023-11-19 05:00:21,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949915524] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:00:21,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [550580781] [2023-11-19 05:00:21,177 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-19 05:00:21,177 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:00:21,178 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:00:21,178 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:00:21,178 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:00:21,868 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:00:22,369 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1870#(and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~k~0#1|) (<= 2147483647 |ULTIMATE.start_main_~j~0#1|))' at error location [2023-11-19 05:00:22,369 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:00:22,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:00:22,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-19 05:00:22,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660489636] [2023-11-19 05:00:22,373 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 05:00:22,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 05:00:22,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:00:22,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 05:00:22,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2023-11-19 05:00:22,377 INFO L87 Difference]: Start difference. First operand 89 states and 116 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:00:22,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:00:22,544 INFO L93 Difference]: Finished difference Result 231 states and 320 transitions. [2023-11-19 05:00:22,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 05:00:22,545 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 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 [2023-11-19 05:00:22,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:00:22,547 INFO L225 Difference]: With dead ends: 231 [2023-11-19 05:00:22,547 INFO L226 Difference]: Without dead ends: 149 [2023-11-19 05:00:22,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-19 05:00:22,552 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 68 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:00:22,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 36 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:00:22,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-11-19 05:00:22,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 147. [2023-11-19 05:00:22,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 141 states have (on average 1.2340425531914894) internal successors, (174), 146 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:00:22,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 174 transitions. [2023-11-19 05:00:22,609 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 174 transitions. Word has length 13 [2023-11-19 05:00:22,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:00:22,610 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 174 transitions. [2023-11-19 05:00:22,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:00:22,610 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 174 transitions. [2023-11-19 05:00:22,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 05:00:22,613 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:22,613 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 2, 1, 1, 1, 1, 1, 1] [2023-11-19 05:00:22,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 05:00:22,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:00:22,829 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 05:00:22,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:22,829 INFO L85 PathProgramCache]: Analyzing trace with hash 2118643762, now seen corresponding path program 1 times [2023-11-19 05:00:22,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:00:22,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952864578] [2023-11-19 05:00:22,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:22,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:00:22,856 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:00:22,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2102979131] [2023-11-19 05:00:22,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:22,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:00:22,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:00:22,868 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:00:22,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 05:00:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:22,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 05:00:22,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:00:23,061 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 40 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-19 05:00:23,062 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:00:23,160 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 40 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-19 05:00:23,161 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:00:23,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952864578] [2023-11-19 05:00:23,161 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:00:23,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102979131] [2023-11-19 05:00:23,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102979131] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:00:23,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [610168131] [2023-11-19 05:00:23,166 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-19 05:00:23,166 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:00:23,168 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:00:23,168 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:00:23,168 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:00:23,711 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:00:24,226 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2563#(and (exists ((|v_#memory_int_32| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_32| |ULTIMATE.start_main_~#A~0#1.base| (store (select |v_#memory_int_32| |ULTIMATE.start_main_~#A~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) (* (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) |ULTIMATE.start_main_~i~0#1|)) |ULTIMATE.start_main_~C~0#1|)))) (<= (+ |ULTIMATE.start_main_~k~0#1| 1) |ULTIMATE.start_main_~n~0#1|) (<= 2147483647 |ULTIMATE.start_main_~k~0#1|))' at error location [2023-11-19 05:00:24,226 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:00:24,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:00:24,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-11-19 05:00:24,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385328800] [2023-11-19 05:00:24,227 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 05:00:24,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 05:00:24,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:00:24,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 05:00:24,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2023-11-19 05:00:24,229 INFO L87 Difference]: Start difference. First operand 147 states and 174 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:00:24,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:00:24,572 INFO L93 Difference]: Finished difference Result 430 states and 565 transitions. [2023-11-19 05:00:24,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 05:00:24,573 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 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 28 [2023-11-19 05:00:24,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:00:24,575 INFO L225 Difference]: With dead ends: 430 [2023-11-19 05:00:24,575 INFO L226 Difference]: Without dead ends: 299 [2023-11-19 05:00:24,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=196, Invalid=454, Unknown=0, NotChecked=0, Total=650 [2023-11-19 05:00:24,577 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 112 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:00:24,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 84 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:00:24,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-11-19 05:00:24,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 291. [2023-11-19 05:00:24,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 285 states have (on average 1.1894736842105262) internal successors, (339), 290 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:00:24,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 339 transitions. [2023-11-19 05:00:24,607 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 339 transitions. Word has length 28 [2023-11-19 05:00:24,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:00:24,608 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 339 transitions. [2023-11-19 05:00:24,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:00:24,608 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 339 transitions. [2023-11-19 05:00:24,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-19 05:00:24,610 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:24,610 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 2, 1, 1, 1, 1, 1, 1] [2023-11-19 05:00:24,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 05:00:24,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:00:24,834 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 05:00:24,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:24,834 INFO L85 PathProgramCache]: Analyzing trace with hash -71034901, now seen corresponding path program 2 times [2023-11-19 05:00:24,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:00:24,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708799335] [2023-11-19 05:00:24,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:24,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:00:24,855 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:00:24,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1602150453] [2023-11-19 05:00:24,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 05:00:24,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:00:24,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:00:24,857 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:00:24,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 05:00:24,938 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-19 05:00:24,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:00:24,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:00:24,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:00:25,043 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2023-11-19 05:00:25,043 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:00:25,168 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2023-11-19 05:00:25,169 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:00:25,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708799335] [2023-11-19 05:00:25,169 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:00:25,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602150453] [2023-11-19 05:00:25,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602150453] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:00:25,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1869860118] [2023-11-19 05:00:25,173 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-19 05:00:25,173 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:00:25,174 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:00:25,174 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:00:25,174 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:00:25,606 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:00:26,080 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3876#(and (<= (+ |ULTIMATE.start_main_~k~0#1| 1) |ULTIMATE.start_main_~n~0#1|) (exists ((|v_#memory_int_53| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_53| |ULTIMATE.start_main_~#A~0#1.base| (store (select |v_#memory_int_53| |ULTIMATE.start_main_~#A~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) (* (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) |ULTIMATE.start_main_~i~0#1|)) |ULTIMATE.start_main_~C~0#1|)))) (<= 2147483647 |ULTIMATE.start_main_~k~0#1|))' at error location [2023-11-19 05:00:26,081 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:00:26,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:00:26,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-19 05:00:26,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121350537] [2023-11-19 05:00:26,081 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 05:00:26,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:00:26,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:00:26,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:00:26,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-19 05:00:26,083 INFO L87 Difference]: Start difference. First operand 291 states and 339 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 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) [2023-11-19 05:00:26,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:00:26,168 INFO L93 Difference]: Finished difference Result 291 states and 339 transitions. [2023-11-19 05:00:26,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:00:26,168 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 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) Word has length 55 [2023-11-19 05:00:26,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:00:26,174 INFO L225 Difference]: With dead ends: 291 [2023-11-19 05:00:26,175 INFO L226 Difference]: Without dead ends: 289 [2023-11-19 05:00:26,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-11-19 05:00:26,176 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 40 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:00:26,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 24 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:00:26,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-11-19 05:00:26,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2023-11-19 05:00:26,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 285 states have (on average 1.0666666666666667) internal successors, (304), 288 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:00:26,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 304 transitions. [2023-11-19 05:00:26,203 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 304 transitions. Word has length 55 [2023-11-19 05:00:26,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:00:26,205 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 304 transitions. [2023-11-19 05:00:26,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 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) [2023-11-19 05:00:26,205 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 304 transitions. [2023-11-19 05:00:26,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-19 05:00:26,210 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:26,210 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 2, 2, 2, 1, 1, 1, 1] [2023-11-19 05:00:26,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 05:00:26,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:00:26,431 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 05:00:26,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:26,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1594111016, now seen corresponding path program 2 times [2023-11-19 05:00:26,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:00:26,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131434279] [2023-11-19 05:00:26,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:26,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:00:26,449 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:00:26,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1760867341] [2023-11-19 05:00:26,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 05:00:26,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:00:26,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:00:26,451 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:00:26,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 05:00:26,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-19 05:00:26,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:00:26,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:00:26,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:00:26,640 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 0 proven. 323 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-19 05:00:26,641 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:00:26,751 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 0 proven. 323 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-19 05:00:26,751 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:00:26,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131434279] [2023-11-19 05:00:26,752 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:00:26,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760867341] [2023-11-19 05:00:26,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760867341] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:00:26,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [956108713] [2023-11-19 05:00:26,754 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-19 05:00:26,755 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:00:26,755 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:00:26,755 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:00:26,755 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:00:27,118 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:00:27,557 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5087#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~i~0#1| 0) (<= 0 (+ |ULTIMATE.start_main_~C~0#1| 2147483648)) (<= 2 |ULTIMATE.start_main_~#A~0#1.base|) (<= 1000 |ULTIMATE.start_main_~k~0#1|) (<= 2147483647 |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~C~0#1| 2147483647) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (= |ULTIMATE.start_main_~n~0#1| 1000))' at error location [2023-11-19 05:00:27,558 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:00:27,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:00:27,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-19 05:00:27,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771590460] [2023-11-19 05:00:27,559 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 05:00:27,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:00:27,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:00:27,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:00:27,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-11-19 05:00:27,562 INFO L87 Difference]: Start difference. First operand 289 states and 304 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:00:27,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:00:27,667 INFO L93 Difference]: Finished difference Result 289 states and 304 transitions. [2023-11-19 05:00:27,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:00:27,668 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 70 [2023-11-19 05:00:27,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:00:27,670 INFO L225 Difference]: With dead ends: 289 [2023-11-19 05:00:27,670 INFO L226 Difference]: Without dead ends: 287 [2023-11-19 05:00:27,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-11-19 05:00:27,671 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 40 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:00:27,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 16 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:00:27,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-11-19 05:00:27,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 155. [2023-11-19 05:00:27,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 153 states have (on average 1.0718954248366013) internal successors, (164), 154 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:00:27,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 164 transitions. [2023-11-19 05:00:27,690 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 164 transitions. Word has length 70 [2023-11-19 05:00:27,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:00:27,691 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 164 transitions. [2023-11-19 05:00:27,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:00:27,691 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 164 transitions. [2023-11-19 05:00:27,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-19 05:00:27,692 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:27,692 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2023-11-19 05:00:27,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 05:00:27,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:00:27,912 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 05:00:27,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:27,913 INFO L85 PathProgramCache]: Analyzing trace with hash 2122938531, now seen corresponding path program 1 times [2023-11-19 05:00:27,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:00:27,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253245840] [2023-11-19 05:00:27,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:27,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:00:27,928 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:00:27,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [553720021] [2023-11-19 05:00:27,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:27,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:00:27,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:00:27,932 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:00:27,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 05:00:28,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:28,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 05:00:28,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:00:28,324 INFO L134 CoverageAnalysis]: Checked inductivity of 622 backedges. 325 proven. 145 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-11-19 05:00:28,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:00:28,628 INFO L134 CoverageAnalysis]: Checked inductivity of 622 backedges. 325 proven. 145 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-11-19 05:00:28,628 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:00:28,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253245840] [2023-11-19 05:00:28,629 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:00:28,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553720021] [2023-11-19 05:00:28,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553720021] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:00:28,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2013239157] [2023-11-19 05:00:28,632 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2023-11-19 05:00:28,632 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:00:28,632 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:00:28,632 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:00:28,633 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:00:32,313 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:00:32,611 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6179#(and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= 0 (+ |ULTIMATE.start_main_~j~0#1| 2147483648)) (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (<= 2147483647 |ULTIMATE.start_main_~i~0#1|))' at error location [2023-11-19 05:00:32,612 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:00:32,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:00:32,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-11-19 05:00:32,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209100077] [2023-11-19 05:00:32,614 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 05:00:32,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-19 05:00:32,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:00:32,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-19 05:00:32,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=848, Unknown=0, NotChecked=0, Total=1190 [2023-11-19 05:00:32,618 INFO L87 Difference]: Start difference. First operand 155 states and 164 transitions. Second operand has 26 states, 26 states have (on average 3.076923076923077) internal successors, (80), 25 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:00:33,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:00:33,291 INFO L93 Difference]: Finished difference Result 451 states and 517 transitions. [2023-11-19 05:00:33,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-19 05:00:33,292 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.076923076923077) internal successors, (80), 25 states have internal predecessors, (80), 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 77 [2023-11-19 05:00:33,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:00:33,294 INFO L225 Difference]: With dead ends: 451 [2023-11-19 05:00:33,295 INFO L226 Difference]: Without dead ends: 299 [2023-11-19 05:00:33,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=628, Invalid=1442, Unknown=0, NotChecked=0, Total=2070 [2023-11-19 05:00:33,301 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 306 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:00:33,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 40 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:00:33,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-11-19 05:00:33,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2023-11-19 05:00:33,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 297 states have (on average 1.037037037037037) internal successors, (308), 298 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:00:33,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 308 transitions. [2023-11-19 05:00:33,334 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 308 transitions. Word has length 77 [2023-11-19 05:00:33,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:00:33,335 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 308 transitions. [2023-11-19 05:00:33,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.076923076923077) internal successors, (80), 25 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:00:33,335 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 308 transitions. [2023-11-19 05:00:33,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-11-19 05:00:33,342 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:33,343 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2023-11-19 05:00:33,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-19 05:00:33,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 05:00:33,565 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 05:00:33,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:33,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1513182429, now seen corresponding path program 2 times [2023-11-19 05:00:33,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:00:33,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392801206] [2023-11-19 05:00:33,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:33,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:00:33,599 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:00:33,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [215229768] [2023-11-19 05:00:33,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 05:00:33,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:00:33,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:00:33,601 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:00:33,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-19 05:00:33,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-19 05:00:33,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:00:33,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:00:33,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:00:33,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2938 backedges. 0 proven. 1505 refuted. 0 times theorem prover too weak. 1433 trivial. 0 not checked. [2023-11-19 05:00:33,964 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:00:34,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2938 backedges. 0 proven. 1505 refuted. 0 times theorem prover too weak. 1433 trivial. 0 not checked. [2023-11-19 05:00:34,226 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:00:34,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392801206] [2023-11-19 05:00:34,226 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:00:34,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215229768] [2023-11-19 05:00:34,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215229768] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:00:34,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2010615683] [2023-11-19 05:00:34,230 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2023-11-19 05:00:34,230 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:00:34,230 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:00:34,231 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:00:34,231 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:00:36,181 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:00:37,539 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8116#(and (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (<= 2147483647 |ULTIMATE.start_main_~i~0#1|))' at error location [2023-11-19 05:00:37,539 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:00:37,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:00:37,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-19 05:00:37,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221310224] [2023-11-19 05:00:37,540 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 05:00:37,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:00:37,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:00:37,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:00:37,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-11-19 05:00:37,542 INFO L87 Difference]: Start difference. First operand 299 states and 308 transitions. Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:00:37,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:00:37,641 INFO L93 Difference]: Finished difference Result 299 states and 308 transitions. [2023-11-19 05:00:37,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:00:37,641 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 149 [2023-11-19 05:00:37,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:00:37,642 INFO L225 Difference]: With dead ends: 299 [2023-11-19 05:00:37,642 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 05:00:37,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 387 SyntacticMatches, 46 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-11-19 05:00:37,644 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:00:37,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 8 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:00:37,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 05:00:37,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 05:00:37,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:00:37,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 05:00:37,646 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 149 [2023-11-19 05:00:37,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:00:37,646 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 05:00:37,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:00:37,646 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 05:00:37,647 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 05:00:37,649 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2023-11-19 05:00:37,650 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2023-11-19 05:00:37,650 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2023-11-19 05:00:37,650 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2023-11-19 05:00:37,650 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2023-11-19 05:00:37,651 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2023-11-19 05:00:37,651 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2023-11-19 05:00:37,651 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2023-11-19 05:00:37,651 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2023-11-19 05:00:37,651 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2023-11-19 05:00:37,652 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2023-11-19 05:00:37,652 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2023-11-19 05:00:37,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-19 05:00:37,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 05:00:37,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-19 05:00:40,330 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2023-11-19 05:00:40,331 INFO L895 garLoopResultBuilder]: At program point L27-2(lines 27 34) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 999) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (<= |ULTIMATE.start_main_~j~0#1| 2147483646) (= |ULTIMATE.start_main_~n~0#1| 1000)) [2023-11-19 05:00:40,331 INFO L899 garLoopResultBuilder]: For program point L27-3(lines 27 34) no Hoare annotation was computed. [2023-11-19 05:00:40,331 INFO L895 garLoopResultBuilder]: At program point L44-2(lines 44 56) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483646) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (<= |ULTIMATE.start_main_~j~0#1| 2147483646) (= |ULTIMATE.start_main_~n~0#1| 1000)) [2023-11-19 05:00:40,331 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 51) no Hoare annotation was computed. [2023-11-19 05:00:40,331 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 31) no Hoare annotation was computed. [2023-11-19 05:00:40,332 INFO L899 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2023-11-19 05:00:40,332 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW(line 53) no Hoare annotation was computed. [2023-11-19 05:00:40,332 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 31) no Hoare annotation was computed. [2023-11-19 05:00:40,332 INFO L895 garLoopResultBuilder]: At program point L29-2(lines 29 32) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 999) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (<= |ULTIMATE.start_main_~j~0#1| 999) (= |ULTIMATE.start_main_~n~0#1| 1000)) [2023-11-19 05:00:40,332 INFO L899 garLoopResultBuilder]: For program point L29-3(lines 29 32) no Hoare annotation was computed. [2023-11-19 05:00:40,333 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW(line 53) no Hoare annotation was computed. [2023-11-19 05:00:40,333 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-19 05:00:40,333 INFO L899 garLoopResultBuilder]: For program point L55(line 55) no Hoare annotation was computed. [2023-11-19 05:00:40,333 INFO L895 garLoopResultBuilder]: At program point L47-2(lines 47 54) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 999) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (<= |ULTIMATE.start_main_~j~0#1| 2147483646) (= |ULTIMATE.start_main_~n~0#1| 1000)) [2023-11-19 05:00:40,333 INFO L899 garLoopResultBuilder]: For program point L47-3(lines 47 54) no Hoare annotation was computed. [2023-11-19 05:00:40,333 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW(line 55) no Hoare annotation was computed. [2023-11-19 05:00:40,334 INFO L899 garLoopResultBuilder]: For program point L31(line 31) no Hoare annotation was computed. [2023-11-19 05:00:40,334 INFO L899 garLoopResultBuilder]: For program point L31-1(line 31) no Hoare annotation was computed. [2023-11-19 05:00:40,334 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW(line 55) no Hoare annotation was computed. [2023-11-19 05:00:40,334 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 35) no Hoare annotation was computed. [2023-11-19 05:00:40,334 INFO L895 garLoopResultBuilder]: At program point L24-2(lines 24 36) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483646) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (<= |ULTIMATE.start_main_~j~0#1| 2147483646) (= |ULTIMATE.start_main_~n~0#1| 1000)) [2023-11-19 05:00:40,335 INFO L895 garLoopResultBuilder]: At program point L49-2(lines 49 52) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 999) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (<= |ULTIMATE.start_main_~j~0#1| 999) (= |ULTIMATE.start_main_~n~0#1| 1000)) [2023-11-19 05:00:40,335 INFO L899 garLoopResultBuilder]: For program point L49-3(lines 49 52) no Hoare annotation was computed. [2023-11-19 05:00:40,335 INFO L899 garLoopResultBuilder]: For program point L33(line 33) no Hoare annotation was computed. [2023-11-19 05:00:40,335 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-19 05:00:40,335 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 35) no Hoare annotation was computed. [2023-11-19 05:00:40,336 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2023-11-19 05:00:40,336 INFO L899 garLoopResultBuilder]: For program point L51(line 51) no Hoare annotation was computed. [2023-11-19 05:00:40,336 INFO L899 garLoopResultBuilder]: For program point L51-1(line 51) no Hoare annotation was computed. [2023-11-19 05:00:40,336 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 51) no Hoare annotation was computed. [2023-11-19 05:00:40,336 INFO L899 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2023-11-19 05:00:40,340 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:00:40,343 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:00:40,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:00:40 BoogieIcfgContainer [2023-11-19 05:00:40,359 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:00:40,359 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:00:40,360 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:00:40,360 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:00:40,360 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:00:16" (3/4) ... [2023-11-19 05:00:40,363 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 05:00:40,372 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2023-11-19 05:00:40,373 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-11-19 05:00:40,373 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 05:00:40,374 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 05:00:40,484 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 05:00:40,484 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/witness.yml [2023-11-19 05:00:40,485 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:00:40,485 INFO L158 Benchmark]: Toolchain (without parser) took 25386.78ms. Allocated memory was 157.3MB in the beginning and 522.2MB in the end (delta: 364.9MB). Free memory was 111.2MB in the beginning and 395.1MB in the end (delta: -283.9MB). Peak memory consumption was 81.6MB. Max. memory is 16.1GB. [2023-11-19 05:00:40,486 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 113.2MB. Free memory is still 65.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:00:40,486 INFO L158 Benchmark]: CACSL2BoogieTranslator took 272.96ms. Allocated memory is still 157.3MB. Free memory was 111.2MB in the beginning and 100.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 05:00:40,487 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.47ms. Allocated memory is still 157.3MB. Free memory was 100.7MB in the beginning and 99.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:00:40,487 INFO L158 Benchmark]: Boogie Preprocessor took 57.21ms. Allocated memory is still 157.3MB. Free memory was 99.2MB in the beginning and 97.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:00:40,487 INFO L158 Benchmark]: RCFGBuilder took 510.73ms. Allocated memory is still 157.3MB. Free memory was 97.5MB in the beginning and 82.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 05:00:40,488 INFO L158 Benchmark]: TraceAbstraction took 24337.79ms. Allocated memory was 157.3MB in the beginning and 522.2MB in the end (delta: 364.9MB). Free memory was 81.8MB in the beginning and 400.3MB in the end (delta: -318.5MB). Peak memory consumption was 269.0MB. Max. memory is 16.1GB. [2023-11-19 05:00:40,488 INFO L158 Benchmark]: Witness Printer took 125.38ms. Allocated memory is still 522.2MB. Free memory was 400.3MB in the beginning and 395.1MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 05:00:40,490 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 113.2MB. Free memory is still 65.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 272.96ms. Allocated memory is still 157.3MB. Free memory was 111.2MB in the beginning and 100.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.47ms. Allocated memory is still 157.3MB. Free memory was 100.7MB in the beginning and 99.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 57.21ms. Allocated memory is still 157.3MB. Free memory was 99.2MB in the beginning and 97.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 510.73ms. Allocated memory is still 157.3MB. Free memory was 97.5MB in the beginning and 82.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 24337.79ms. Allocated memory was 157.3MB in the beginning and 522.2MB in the end (delta: 364.9MB). Free memory was 81.8MB in the beginning and 400.3MB in the end (delta: -318.5MB). Peak memory consumption was 269.0MB. Max. memory is 16.1GB. * Witness Printer took 125.38ms. Allocated memory is still 522.2MB. Free memory was 400.3MB in the beginning and 395.1MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 31]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 31]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 33]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 33]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 35]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 35]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 24.3s, OverallIterations: 14, TraceHistogramMax: 44, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 787 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 787 mSDsluCounter, 396 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 198 mSDsCounter, 253 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 618 IncrementalHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 253 mSolverCounterUnsat, 198 mSDtfsCounter, 618 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1247 GetRequests, 1061 SyntacticMatches, 48 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1340 ImplicationChecksByTransitivity, 5.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=299occurred in iteration=13, InterpolantAutomatonStates: 85, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 14 MinimizatonAttempts, 202 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 110 NumberOfFragments, 132 HoareAnnotationTreeSize, 6 FomulaSimplifications, 3626 FormulaSimplificationTreeSizeReduction, 1.5s HoareSimplificationTime, 6 FomulaSimplificationsInter, 3993 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 441 NumberOfCodeBlocks, 184 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 821 ConstructedInterpolants, 0 QuantifiedInterpolants, 2473 SizeOfPredicates, 14 NumberOfNonLiveVariables, 1062 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 21 InterpolantComputations, 7 PerfectInterpolantSequences, 5208/9266 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 0.8s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 6, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 15, TOOLS_POST_TIME: 0.6s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 15, TOOLS_QUANTIFIERELIM_TIME: 0.6s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 30, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 6, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 0.6s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.6s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 42, DAG_COMPRESSION_RETAINED_NODES: 22, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (((((((0 <= k) && (i <= 2147483646)) && (0 <= j)) && (0 <= i)) && (k <= 2147483646)) && (j <= 2147483646)) && (n == 1000)) - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: (((((((0 <= k) && (i <= 999)) && (0 <= j)) && (0 <= i)) && (k <= 2147483646)) && (j <= 999)) && (n == 1000)) - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: (((((((0 <= k) && (i <= 999)) && (0 <= j)) && (0 <= i)) && (k <= 2147483646)) && (j <= 2147483646)) && (n == 1000)) - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: (((((((0 <= k) && (i <= 2147483646)) && (0 <= j)) && (0 <= i)) && (k <= 2147483646)) && (j <= 2147483646)) && (n == 1000)) - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: (((((((0 <= k) && (i <= 999)) && (0 <= j)) && (0 <= i)) && (k <= 2147483646)) && (j <= 2147483646)) && (n == 1000)) - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: (((((((0 <= k) && (i <= 999)) && (0 <= j)) && (0 <= i)) && (k <= 2147483646)) && (j <= 999)) && (n == 1000)) RESULT: Ultimate proved your program to be correct! [2023-11-19 05:00:40,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ede41f2-6639-4396-96d6-15868e3fc777/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE