./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-multidimensional/max-2-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 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_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-multidimensional/max-2-u.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire --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 d56d1653edfb1a7b1c72e82d390b1b74d1df9114797a2f1426eb2285f6c4408f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:10:47,048 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:10:47,189 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-23 21:10:47,199 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:10:47,200 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:10:47,245 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:10:47,246 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:10:47,247 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:10:47,248 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:10:47,254 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:10:47,254 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:10:47,255 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:10:47,256 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:10:47,258 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:10:47,258 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:10:47,259 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:10:47,259 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:10:47,260 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:10:47,260 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:10:47,261 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:10:47,263 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:10:47,264 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:10:47,265 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:10:47,266 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:10:47,266 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:10:47,267 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:10:47,267 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:10:47,268 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:10:47,268 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:10:47,268 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:10:47,270 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:10:47,270 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 21:10:47,271 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:10:47,271 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:10:47,271 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:10:47,272 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:10:47,272 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:10:47,272 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:10:47,272 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:10:47,273 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:10:47,273 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:10:47,274 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:10:47,274 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:10:47,274 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:10:47,275 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:10:47,275 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:10:47,275 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:10:47,276 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:10:47,276 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:10:47,276 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_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d56d1653edfb1a7b1c72e82d390b1b74d1df9114797a2f1426eb2285f6c4408f [2023-11-23 21:10:47,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:10:47,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:10:47,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:10:47,660 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:10:47,661 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:10:47,662 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/array-multidimensional/max-2-u.c [2023-11-23 21:10:50,982 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:10:51,194 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:10:51,195 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/sv-benchmarks/c/array-multidimensional/max-2-u.c [2023-11-23 21:10:51,205 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/data/b61967643/d04b052e20144893976255b05415e0fc/FLAG6523c7d0e [2023-11-23 21:10:51,224 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/data/b61967643/d04b052e20144893976255b05415e0fc [2023-11-23 21:10:51,228 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:10:51,230 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:10:51,232 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:10:51,232 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:10:51,247 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:10:51,248 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:10:51" (1/1) ... [2023-11-23 21:10:51,250 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ac479b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:51, skipping insertion in model container [2023-11-23 21:10:51,250 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:10:51" (1/1) ... [2023-11-23 21:10:51,285 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:10:51,552 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:10:51,570 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:10:51,604 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:10:51,623 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:10:51,624 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:51 WrapperNode [2023-11-23 21:10:51,624 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:10:51,626 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:10:51,626 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:10:51,626 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:10:51,636 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:51" (1/1) ... [2023-11-23 21:10:51,661 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:51" (1/1) ... [2023-11-23 21:10:51,687 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 96 [2023-11-23 21:10:51,687 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:10:51,688 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:10:51,689 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:10:51,689 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:10:51,701 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:51" (1/1) ... [2023-11-23 21:10:51,702 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:51" (1/1) ... [2023-11-23 21:10:51,705 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:51" (1/1) ... [2023-11-23 21:10:51,705 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:51" (1/1) ... [2023-11-23 21:10:51,717 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:51" (1/1) ... [2023-11-23 21:10:51,722 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:51" (1/1) ... [2023-11-23 21:10:51,724 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:51" (1/1) ... [2023-11-23 21:10:51,726 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:51" (1/1) ... [2023-11-23 21:10:51,729 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:10:51,737 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:10:51,738 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:10:51,738 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:10:51,739 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:51" (1/1) ... [2023-11-23 21:10:51,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:10:51,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:10:51,774 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:10:51,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:10:51,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:10:51,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:10:51,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:10:51,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:10:51,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:10:51,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:10:51,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:10:51,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:10:51,919 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:10:51,922 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:10:52,306 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:10:52,424 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:10:52,424 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-23 21:10:52,426 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:10:52 BoogieIcfgContainer [2023-11-23 21:10:52,426 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:10:52,430 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:10:52,430 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:10:52,435 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:10:52,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:10:51" (1/3) ... [2023-11-23 21:10:52,436 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3610744d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:10:52, skipping insertion in model container [2023-11-23 21:10:52,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:51" (2/3) ... [2023-11-23 21:10:52,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3610744d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:10:52, skipping insertion in model container [2023-11-23 21:10:52,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:10:52" (3/3) ... [2023-11-23 21:10:52,440 INFO L112 eAbstractionObserver]: Analyzing ICFG max-2-u.c [2023-11-23 21:10:52,465 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:10:52,465 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-23 21:10:52,545 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:10:52,556 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;@27fff343, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:10:52,556 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-23 21:10:52,562 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) [2023-11-23 21:10:52,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-23 21:10:52,572 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:10:52,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-23 21:10:52,575 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-23 21:10:52,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:10:52,585 INFO L85 PathProgramCache]: Analyzing trace with hash 4718190, now seen corresponding path program 1 times [2023-11-23 21:10:52,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:10:52,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127291318] [2023-11-23 21:10:52,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:10:52,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:10:52,722 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:10:52,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [133505857] [2023-11-23 21:10:52,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:10:52,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:10:52,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:10:52,729 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:10:52,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:10:52,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:10:52,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:10:52,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:10:52,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:10:52,946 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:10:52,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:10:52,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127291318] [2023-11-23 21:10:52,948 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:10:52,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133505857] [2023-11-23 21:10:52,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133505857] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:10:52,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:10:52,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:10:52,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775183512] [2023-11-23 21:10:52,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:10:52,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:10:52,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:10:53,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:10:53,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:10:53,022 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), 3 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) [2023-11-23 21:10:53,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:10:53,128 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2023-11-23 21:10:53,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:10:53,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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 [2023-11-23 21:10:53,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:10:53,141 INFO L225 Difference]: With dead ends: 32 [2023-11-23 21:10:53,141 INFO L226 Difference]: Without dead ends: 28 [2023-11-23 21:10:53,145 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 [2023-11-23 21:10:53,150 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:10:53,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 15 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:10:53,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-23 21:10:53,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-11-23 21:10:53,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.736842105263158) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:10:53,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2023-11-23 21:10:53,206 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 4 [2023-11-23 21:10:53,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:10:53,207 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2023-11-23 21:10:53,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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) [2023-11-23 21:10:53,209 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2023-11-23 21:10:53,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-23 21:10:53,211 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:10:53,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-23 21:10:53,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:10:53,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 21:10:53,426 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-23 21:10:53,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:10:53,427 INFO L85 PathProgramCache]: Analyzing trace with hash 4721855, now seen corresponding path program 1 times [2023-11-23 21:10:53,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:10:53,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008408639] [2023-11-23 21:10:53,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:10:53,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:10:53,450 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:10:53,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [136069066] [2023-11-23 21:10:53,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:10:53,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:10:53,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:10:53,456 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:10:53,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:10:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:10:53,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:10:53,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:10:53,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:10:53,529 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:10:53,530 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:10:53,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008408639] [2023-11-23 21:10:53,530 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:10:53,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136069066] [2023-11-23 21:10:53,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136069066] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:10:53,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:10:53,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:10:53,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314645061] [2023-11-23 21:10:53,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:10:53,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:10:53,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:10:53,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:10:53,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:10:53,535 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:10:53,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:10:53,580 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2023-11-23 21:10:53,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:10:53,581 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 [2023-11-23 21:10:53,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:10:53,582 INFO L225 Difference]: With dead ends: 28 [2023-11-23 21:10:53,582 INFO L226 Difference]: Without dead ends: 25 [2023-11-23 21:10:53,583 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 [2023-11-23 21:10:53,584 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:10:53,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 9 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:10:53,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-11-23 21:10:53,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-11-23 21:10:53,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:10:53,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2023-11-23 21:10:53,592 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 4 [2023-11-23 21:10:53,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:10:53,593 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2023-11-23 21:10:53,593 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) [2023-11-23 21:10:53,593 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2023-11-23 21:10:53,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-23 21:10:53,594 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:10:53,594 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 21:10:53,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:10:53,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-23 21:10:53,844 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-23 21:10:53,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:10:53,845 INFO L85 PathProgramCache]: Analyzing trace with hash 146263944, now seen corresponding path program 1 times [2023-11-23 21:10:53,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:10:53,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931213465] [2023-11-23 21:10:53,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:10:53,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:10:53,856 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:10:53,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [379334044] [2023-11-23 21:10:53,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:10:53,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:10:53,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:10:53,859 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:10:53,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:10:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:10:53,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:10:53,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:10:53,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:10:53,939 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:10:53,940 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:10:53,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931213465] [2023-11-23 21:10:53,940 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:10:53,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379334044] [2023-11-23 21:10:53,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379334044] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:10:53,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:10:53,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:10:53,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43385214] [2023-11-23 21:10:53,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:10:53,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:10:53,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:10:53,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:10:53,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:10:53,945 INFO L87 Difference]: Start difference. First operand 25 states and 30 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) [2023-11-23 21:10:54,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:10:54,021 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2023-11-23 21:10:54,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:10:54,023 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 [2023-11-23 21:10:54,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:10:54,024 INFO L225 Difference]: With dead ends: 49 [2023-11-23 21:10:54,024 INFO L226 Difference]: Without dead ends: 46 [2023-11-23 21:10:54,025 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 [2023-11-23 21:10:54,027 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 16 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:10:54,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 24 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:10:54,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-11-23 21:10:54,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 34. [2023-11-23 21:10:54,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.5) internal successors, (42), 33 states have internal predecessors, (42), 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) [2023-11-23 21:10:54,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2023-11-23 21:10:54,039 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 5 [2023-11-23 21:10:54,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:10:54,040 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2023-11-23 21:10:54,040 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) [2023-11-23 21:10:54,041 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2023-11-23 21:10:54,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-23 21:10:54,042 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:10:54,042 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 21:10:54,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:10:54,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:10:54,268 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-23 21:10:54,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:10:54,269 INFO L85 PathProgramCache]: Analyzing trace with hash 146377566, now seen corresponding path program 1 times [2023-11-23 21:10:54,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:10:54,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867801703] [2023-11-23 21:10:54,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:10:54,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:10:54,277 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:10:54,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1041325755] [2023-11-23 21:10:54,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:10:54,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:10:54,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:10:54,280 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:10:54,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 21:10:54,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:10:54,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:10:54,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:10:54,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:10:54,387 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:10:54,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:10:54,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867801703] [2023-11-23 21:10:54,388 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:10:54,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041325755] [2023-11-23 21:10:54,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041325755] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:10:54,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:10:54,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:10:54,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335912489] [2023-11-23 21:10:54,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:10:54,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:10:54,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:10:54,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:10:54,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:10:54,392 INFO L87 Difference]: Start difference. First operand 34 states and 42 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) [2023-11-23 21:10:54,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:10:54,472 INFO L93 Difference]: Finished difference Result 67 states and 83 transitions. [2023-11-23 21:10:54,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:10:54,472 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 [2023-11-23 21:10:54,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:10:54,474 INFO L225 Difference]: With dead ends: 67 [2023-11-23 21:10:54,474 INFO L226 Difference]: Without dead ends: 64 [2023-11-23 21:10:54,475 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 [2023-11-23 21:10:54,476 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:10:54,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 21 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:10:54,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-23 21:10:54,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2023-11-23 21:10:54,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 55 states have (on average 1.4545454545454546) internal successors, (80), 60 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) [2023-11-23 21:10:54,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 80 transitions. [2023-11-23 21:10:54,493 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 80 transitions. Word has length 5 [2023-11-23 21:10:54,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:10:54,494 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 80 transitions. [2023-11-23 21:10:54,494 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) [2023-11-23 21:10:54,495 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 80 transitions. [2023-11-23 21:10:54,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 21:10:54,496 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:10:54,496 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2023-11-23 21:10:54,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:10:54,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:10:54,697 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-23 21:10:54,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:10:54,698 INFO L85 PathProgramCache]: Analyzing trace with hash -2042600020, now seen corresponding path program 1 times [2023-11-23 21:10:54,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:10:54,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783949644] [2023-11-23 21:10:54,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:10:54,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:10:54,707 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:10:54,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [295731983] [2023-11-23 21:10:54,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:10:54,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:10:54,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:10:54,710 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:10:54,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 21:10:54,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:10:54,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:10:54,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:10:54,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:10:54,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:10:54,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:10:54,882 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:10:54,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783949644] [2023-11-23 21:10:54,883 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:10:54,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295731983] [2023-11-23 21:10:54,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295731983] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:10:54,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1899898038] [2023-11-23 21:10:54,906 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2023-11-23 21:10:54,907 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:10:54,911 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:10:54,918 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:10:54,919 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:10:55,999 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:10:56,253 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '542#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_~m~0#1| 1000) (<= 2 |ULTIMATE.start_main_~#A~0#1.base|) (<= 2147483647 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (= |ULTIMATE.start_main_~n~0#1| 1500))' at error location [2023-11-23 21:10:56,253 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:10:56,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:10:56,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-23 21:10:56,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202468225] [2023-11-23 21:10:56,254 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 21:10:56,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:10:56,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:10:56,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:10:56,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:10:56,256 INFO L87 Difference]: Start difference. First operand 61 states and 80 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:10:56,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:10:56,473 INFO L93 Difference]: Finished difference Result 190 states and 250 transitions. [2023-11-23 21:10:56,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:10:56,474 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-23 21:10:56,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:10:56,483 INFO L225 Difference]: With dead ends: 190 [2023-11-23 21:10:56,483 INFO L226 Difference]: Without dead ends: 187 [2023-11-23 21:10:56,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:10:56,485 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 128 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:10:56,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 51 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:10:56,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-11-23 21:10:56,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 115. [2023-11-23 21:10:56,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 109 states have (on average 1.3944954128440368) internal successors, (152), 114 states have internal predecessors, (152), 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) [2023-11-23 21:10:56,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 152 transitions. [2023-11-23 21:10:56,528 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 152 transitions. Word has length 8 [2023-11-23 21:10:56,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:10:56,528 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 152 transitions. [2023-11-23 21:10:56,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:10:56,529 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 152 transitions. [2023-11-23 21:10:56,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 21:10:56,530 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:10:56,530 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1] [2023-11-23 21:10:56,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 21:10:56,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:10:56,746 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-23 21:10:56,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:10:56,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1338126945, now seen corresponding path program 1 times [2023-11-23 21:10:56,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:10:56,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103872073] [2023-11-23 21:10:56,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:10:56,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:10:56,753 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:10:56,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1000536969] [2023-11-23 21:10:56,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:10:56,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:10:56,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:10:56,755 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:10:56,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 21:10:56,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:10:56,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:10:56,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:10:56,827 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:10:56,827 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:10:56,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:10:56,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103872073] [2023-11-23 21:10:56,828 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:10:56,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000536969] [2023-11-23 21:10:56,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000536969] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:10:56,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:10:56,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:10:56,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571908255] [2023-11-23 21:10:56,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:10:56,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:10:56,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:10:56,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:10:56,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:10:56,830 INFO L87 Difference]: Start difference. First operand 115 states and 152 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) [2023-11-23 21:10:56,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:10:56,899 INFO L93 Difference]: Finished difference Result 213 states and 280 transitions. [2023-11-23 21:10:56,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:10:56,900 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 [2023-11-23 21:10:56,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:10:56,901 INFO L225 Difference]: With dead ends: 213 [2023-11-23 21:10:56,901 INFO L226 Difference]: Without dead ends: 115 [2023-11-23 21:10:56,903 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 [2023-11-23 21:10:56,904 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 33 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:10:56,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 22 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:10:56,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-11-23 21:10:56,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-11-23 21:10:56,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 109 states have (on average 1.3394495412844036) internal successors, (146), 114 states have internal predecessors, (146), 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) [2023-11-23 21:10:56,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 146 transitions. [2023-11-23 21:10:56,929 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 146 transitions. Word has length 9 [2023-11-23 21:10:56,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:10:56,929 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 146 transitions. [2023-11-23 21:10:56,930 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) [2023-11-23 21:10:56,930 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 146 transitions. [2023-11-23 21:10:56,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 21:10:56,932 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:10:56,933 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1] [2023-11-23 21:10:56,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 21:10:57,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-23 21:10:57,163 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-23 21:10:57,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:10:57,163 INFO L85 PathProgramCache]: Analyzing trace with hash -473357059, now seen corresponding path program 1 times [2023-11-23 21:10:57,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:10:57,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731932251] [2023-11-23 21:10:57,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:10:57,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:10:57,172 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:10:57,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1523332201] [2023-11-23 21:10:57,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:10:57,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:10:57,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:10:57,174 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:10:57,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 21:10:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:10:57,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:10:57,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:10:57,267 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 21:10:57,267 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:10:57,295 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 21:10:57,296 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:10:57,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731932251] [2023-11-23 21:10:57,296 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:10:57,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523332201] [2023-11-23 21:10:57,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523332201] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:10:57,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1868776762] [2023-11-23 21:10:57,299 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-23 21:10:57,300 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:10:57,300 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:10:57,300 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:10:57,301 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:10:58,572 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:10:58,954 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1486#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~m~0#1| 1000) (<= 1500 |ULTIMATE.start_main_~j~0#1|) (<= 2 |ULTIMATE.start_main_~#A~0#1.base|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (<= 2147483647 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~n~0#1| 1500))' at error location [2023-11-23 21:10:58,955 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:10:58,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:10:58,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-23 21:10:58,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309576627] [2023-11-23 21:10:58,955 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 21:10:58,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 21:10:58,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:10:58,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 21:10:58,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-11-23 21:10:58,957 INFO L87 Difference]: Start difference. First operand 115 states and 146 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:10:59,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:10:59,130 INFO L93 Difference]: Finished difference Result 213 states and 269 transitions. [2023-11-23 21:10:59,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:10:59,131 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-23 21:10:59,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:10:59,132 INFO L225 Difference]: With dead ends: 213 [2023-11-23 21:10:59,132 INFO L226 Difference]: Without dead ends: 115 [2023-11-23 21:10:59,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-23 21:10:59,135 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 66 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:10:59,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 37 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:10:59,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-11-23 21:10:59,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-11-23 21:10:59,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 109 states have (on average 1.1743119266055047) internal successors, (128), 114 states have internal predecessors, (128), 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) [2023-11-23 21:10:59,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 128 transitions. [2023-11-23 21:10:59,148 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 128 transitions. Word has length 15 [2023-11-23 21:10:59,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:10:59,149 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 128 transitions. [2023-11-23 21:10:59,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:10:59,149 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 128 transitions. [2023-11-23 21:10:59,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-23 21:10:59,150 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:10:59,151 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1] [2023-11-23 21:10:59,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 21:10:59,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-23 21:10:59,366 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)] === [2023-11-23 21:10:59,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:10:59,367 INFO L85 PathProgramCache]: Analyzing trace with hash 749529736, now seen corresponding path program 2 times [2023-11-23 21:10:59,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:10:59,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511845311] [2023-11-23 21:10:59,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:10:59,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:10:59,379 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:10:59,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2005100049] [2023-11-23 21:10:59,380 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 21:10:59,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:10:59,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:10:59,389 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:10:59,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 21:10:59,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-23 21:10:59,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:10:59,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:10:59,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:10:59,498 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-23 21:10:59,498 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:10:59,561 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-23 21:10:59,562 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:10:59,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511845311] [2023-11-23 21:10:59,562 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:10:59,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005100049] [2023-11-23 21:10:59,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005100049] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:10:59,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [315145931] [2023-11-23 21:10:59,565 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2023-11-23 21:10:59,566 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:10:59,566 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:10:59,566 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:10:59,567 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:11:00,042 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:11:00,252 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2028#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_~m~0#1| 1000) (<= 2 |ULTIMATE.start_main_~#A~0#1.base|) (<= 2147483647 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (= |ULTIMATE.start_main_~n~0#1| 1500))' at error location [2023-11-23 21:11:00,252 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:11:00,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:11:00,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-23 21:11:00,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520895620] [2023-11-23 21:11:00,253 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 21:11:00,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:11:00,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:11:00,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:11:00,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:11:00,255 INFO L87 Difference]: Start difference. First operand 115 states and 128 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2023-11-23 21:11:00,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:11:00,344 INFO L93 Difference]: Finished difference Result 115 states and 128 transitions. [2023-11-23 21:11:00,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:11:00,345 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 17 [2023-11-23 21:11:00,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:11:00,346 INFO L225 Difference]: With dead ends: 115 [2023-11-23 21:11:00,347 INFO L226 Difference]: Without dead ends: 112 [2023-11-23 21:11:00,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2023-11-23 21:11:00,350 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 44 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:11:00,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 19 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:11:00,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-23 21:11:00,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 100. [2023-11-23 21:11:00,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 97 states have (on average 1.134020618556701) internal successors, (110), 99 states have internal predecessors, (110), 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) [2023-11-23 21:11:00,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2023-11-23 21:11:00,369 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 17 [2023-11-23 21:11:00,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:11:00,370 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2023-11-23 21:11:00,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2023-11-23 21:11:00,370 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2023-11-23 21:11:00,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-23 21:11:00,374 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:11:00,374 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 1, 1, 1] [2023-11-23 21:11:00,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 21:11:00,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-23 21:11:00,590 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)] === [2023-11-23 21:11:00,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:11:00,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1987859937, now seen corresponding path program 2 times [2023-11-23 21:11:00,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:11:00,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392288930] [2023-11-23 21:11:00,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:11:00,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:11:00,609 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:11:00,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [366818261] [2023-11-23 21:11:00,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 21:11:00,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:11:00,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:11:00,614 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:11:00,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 21:11:00,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-23 21:11:00,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:11:00,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:11:00,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:11:00,765 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-23 21:11:00,766 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:11:00,839 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-23 21:11:00,840 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:11:00,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392288930] [2023-11-23 21:11:00,840 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:11:00,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366818261] [2023-11-23 21:11:00,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366818261] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:11:00,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1702656077] [2023-11-23 21:11:00,843 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-23 21:11:00,844 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:11:00,844 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:11:00,844 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:11:00,844 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:11:01,712 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:11:02,045 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2522#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~m~0#1| 1000) (<= 1500 |ULTIMATE.start_main_~j~0#1|) (<= 2 |ULTIMATE.start_main_~#A~0#1.base|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (<= 2147483647 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~n~0#1| 1500))' at error location [2023-11-23 21:11:02,045 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:11:02,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:11:02,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-23 21:11:02,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152713662] [2023-11-23 21:11:02,046 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 21:11:02,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:11:02,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:11:02,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:11:02,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-11-23 21:11:02,047 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:11:02,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:11:02,157 INFO L93 Difference]: Finished difference Result 134 states and 147 transitions. [2023-11-23 21:11:02,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:11:02,158 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-11-23 21:11:02,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:11:02,159 INFO L225 Difference]: With dead ends: 134 [2023-11-23 21:11:02,159 INFO L226 Difference]: Without dead ends: 131 [2023-11-23 21:11:02,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 85 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2023-11-23 21:11:02,160 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 134 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:11:02,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 16 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:11:02,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-11-23 21:11:02,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 115. [2023-11-23 21:11:02,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 113 states have (on average 1.1150442477876106) internal successors, (126), 114 states have internal predecessors, (126), 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) [2023-11-23 21:11:02,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 126 transitions. [2023-11-23 21:11:02,174 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 126 transitions. Word has length 33 [2023-11-23 21:11:02,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:11:02,174 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 126 transitions. [2023-11-23 21:11:02,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:11:02,175 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 126 transitions. [2023-11-23 21:11:02,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-23 21:11:02,177 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:11:02,177 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 2, 1, 1, 1] [2023-11-23 21:11:02,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 21:11:02,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:11:02,390 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-23 21:11:02,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:11:02,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1000464451, now seen corresponding path program 1 times [2023-11-23 21:11:02,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:11:02,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284243192] [2023-11-23 21:11:02,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:11:02,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:11:02,400 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:11:02,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1769641810] [2023-11-23 21:11:02,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:11:02,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:11:02,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:11:02,402 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:11:02,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 21:11:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:11:02,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:11:02,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:11:02,501 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2023-11-23 21:11:02,501 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:11:02,502 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:11:02,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284243192] [2023-11-23 21:11:02,502 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:11:02,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769641810] [2023-11-23 21:11:02,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769641810] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:11:02,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:11:02,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:11:02,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380079171] [2023-11-23 21:11:02,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:11:02,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:11:02,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:11:02,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:11:02,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:11:02,511 INFO L87 Difference]: Start difference. First operand 115 states and 126 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:11:02,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:11:02,557 INFO L93 Difference]: Finished difference Result 229 states and 251 transitions. [2023-11-23 21:11:02,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:11:02,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-11-23 21:11:02,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:11:02,559 INFO L225 Difference]: With dead ends: 229 [2023-11-23 21:11:02,559 INFO L226 Difference]: Without dead ends: 131 [2023-11-23 21:11:02,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:11:02,564 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:11:02,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 20 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:11:02,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-11-23 21:11:02,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 116. [2023-11-23 21:11:02,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 114 states have (on average 1.1140350877192982) internal successors, (127), 115 states have internal predecessors, (127), 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) [2023-11-23 21:11:02,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 127 transitions. [2023-11-23 21:11:02,576 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 127 transitions. Word has length 50 [2023-11-23 21:11:02,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:11:02,577 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 127 transitions. [2023-11-23 21:11:02,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:11:02,577 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 127 transitions. [2023-11-23 21:11:02,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-23 21:11:02,582 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:11:02,582 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:11:02,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 21:11:02,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 21:11:02,783 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-23 21:11:02,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:11:02,784 INFO L85 PathProgramCache]: Analyzing trace with hash 28055714, now seen corresponding path program 1 times [2023-11-23 21:11:02,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:11:02,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085405469] [2023-11-23 21:11:02,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:11:02,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:11:02,799 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:11:02,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1205456057] [2023-11-23 21:11:02,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:11:02,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:11:02,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:11:02,801 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:11:02,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-23 21:11:02,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:11:02,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:11:02,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:11:02,996 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2023-11-23 21:11:02,997 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:11:03,081 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2023-11-23 21:11:03,082 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:11:03,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085405469] [2023-11-23 21:11:03,082 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:11:03,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205456057] [2023-11-23 21:11:03,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205456057] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:11:03,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [189976982] [2023-11-23 21:11:03,088 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-11-23 21:11:03,088 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:11:03,089 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:11:03,089 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:11:03,089 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:11:03,115 FATAL L? ?]: Ignoring exception! java.lang.IllegalStateException: "Dag" had a cycle: 0 ε 1 ※49 $Ultimate##0 2 ∅ 3 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3);assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~mem5#1, main_#t~mem6#1, main_#t~mem7#1, main_#t~mem8#1, main_~i~0#1, main_~j~0#1, main_~m~0#1, main_~n~0#1, main_~#A~0#1.base, main_~#A~0#1.offset, main_~max~0#1;havoc main_~i~0#1;havoc main_~j~0#1;main_~m~0#1 := 1000;main_~n~0#1 := 1500;call main_~#A~0#1.base, main_~#A~0#1.offset := #Ultimate.allocOnStack(4 * main_~n~0#1 * main_~n~0#1 % 4294967296);havoc main_~max~0#1;main_~i~0#1 := 0;main_~j~0#1 := 0; 4 ε 5 ※52 null 6 assume !!(main_~i~0#1 < main_~m~0#1);main_~j~0#1 := 0; 7 ※39 L24-2 8 BeginParallelComposition{ParallelCodeBlock0: assume !(main_~i~0#1 < main_~m~0#1);ParallelCodeBlock1: assume !true;}EndParallelCompositionmain_~i~0#1 := 0;main_~j~0#1 := 0;call main_#t~mem5#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset, 4);main_~max~0#1 := main_#t~mem5#1;havoc main_#t~mem5#1; 9 ※38 ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW 10 ※40 L44 11 ※41 L29 12 ※42 L29-1 13 ※43 L31 14 ※44 L38-2 15 ※45 L40-3 16 ※46 L40-2 17 ※47 L26-2 18 ※48 L46 19 ※50 L26-3 20 ※51 L41-2 21 [((assume !!(main_~j~0#1 < main_~n~0#1);havoc main_#t~nondet4#1;assume -2147483648 <= main_#t~nondet4#1 && main_#t~nondet4#1 <= 2147483647;call write~int(main_#t~nondet4#1, main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);havoc main_#t~nondet4#1;·assume 1 + main_~j~0#1 >= -2147483648;)·assume 1 + main_~j~0#1 <= 2147483647;main_~j~0#1 := 1 + main_~j~0#1;)]* 22 assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1; 23 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 24 assume !(1 + main_~i~0#1 <= 2147483647); 25 assume 1 + main_~j~0#1 >= -2147483648; 26 assume !!(main_~j~0#1 < main_~n~0#1);havoc main_#t~nondet4#1;assume -2147483648 <= main_#t~nondet4#1 && main_#t~nondet4#1 <= 2147483647;call write~int(main_#t~nondet4#1, main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);havoc main_#t~nondet4#1; 27 assume 1 + main_~j~0#1 >= -2147483648; 28 assume 1 + main_~i~0#1 >= -2147483648; 29 assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1; 30 BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition 31 assume 1 + main_~j~0#1 <= 2147483647;main_~j~0#1 := 1 + main_~j~0#1; 32 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 33 [((assume !!(main_~j~0#1 < main_~n~0#1);havoc main_#t~nondet4#1;assume -2147483648 <= main_#t~nondet4#1 && main_#t~nondet4#1 <= 2147483647;call write~int(main_#t~nondet4#1, main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);havoc main_#t~nondet4#1;·assume 1 + main_~j~0#1 >= -2147483648;)·assume 1 + main_~j~0#1 <= 2147483647;main_~j~0#1 := 1 + main_~j~0#1;)]* 34 [((assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1;·assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0;)·(BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition·assume 1 + main_~i~0#1 >= -2147483648;))]* 35 [((assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1;·assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0;)·(BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition·assume 1 + main_~i~0#1 >= -2147483648;))]* 36 [(((assume 1 + main_~i~0#1 >= -2147483648;·(assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1;·assume !!(main_~i~0#1 < main_~m~0#1);main_~j~0#1 := 0;))·[((assume !!(main_~j~0#1 < main_~n~0#1);havoc main_#t~nondet4#1;assume -2147483648 <= main_#t~nondet4#1 && main_#t~nondet4#1 <= 2147483647;call write~int(main_#t~nondet4#1, main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);havoc main_#t~nondet4#1;·assume 1 + main_~j~0#1 >= -2147483648;)·assume 1 + main_~j~0#1 <= 2147483647;main_~j~0#1 := 1 + main_~j~0#1;)]* )·BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition)]* 37 [{((assume 1 + main_~j~0#1 >= -2147483648;·assume 1 + main_~j~0#1 <= 2147483647;main_~j~0#1 := 1 + main_~j~0#1;)·assume !!(main_~j~0#1 < main_~n~0#1);call main_#t~mem6#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);BeginParallelComposition{ParallelCodeBlock0: assume main_#t~mem6#1 > main_~max~0#1;havoc main_#t~mem6#1;call main_#t~mem7#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);main_~max~0#1 := main_#t~mem7#1;havoc main_#t~mem7#1;ParallelCodeBlock1: assume !(main_#t~mem6#1 > main_~max~0#1);havoc main_#t~mem6#1;}EndParallelComposition) ∪ ((((assume 1 + main_~j~0#1 >= -2147483648;·assume 1 + main_~j~0#1 <= 2147483647;main_~j~0#1 := 1 + main_~j~0#1;)·(BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition·assume 1 + main_~i~0#1 >= -2147483648;))·[((assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1;·assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0;)·(BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition·assume 1 + main_~i~0#1 >= -2147483648;))]* )·((assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1;·assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0;)·assume !!(main_~j~0#1 < main_~n~0#1);call main_#t~mem6#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);BeginParallelComposition{ParallelCodeBlock0: assume main_#t~mem6#1 > main_~max~0#1;havoc main_#t~mem6#1;call main_#t~mem7#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);main_~max~0#1 := main_#t~mem7#1;havoc main_#t~mem7#1;ParallelCodeBlock1: assume !(main_#t~mem6#1 > main_~max~0#1);havoc main_#t~mem6#1;}EndParallelComposition))}]* 38 BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition 39 assume !!(main_~i~0#1 < main_~m~0#1);main_~j~0#1 := 0; 40 assume !!(main_~j~0#1 < main_~n~0#1);call main_#t~mem6#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);BeginParallelComposition{ParallelCodeBlock0: assume main_#t~mem6#1 > main_~max~0#1;havoc main_#t~mem6#1;call main_#t~mem7#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);main_~max~0#1 := main_#t~mem7#1;havoc main_#t~mem7#1;ParallelCodeBlock1: assume !(main_#t~mem6#1 > main_~max~0#1);havoc main_#t~mem6#1;}EndParallelComposition 41 BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition 42 BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition 43 BeginParallelComposition{ParallelCodeBlock0: assume !(main_~i~0#1 < main_~m~0#1);ParallelCodeBlock1: assume !true;}EndParallelCompositionmain_~i~0#1 := 0;main_~j~0#1 := 0;call main_#t~mem5#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset, 4);main_~max~0#1 := main_#t~mem5#1;havoc main_#t~mem5#1; 44 assume 1 + main_~i~0#1 >= -2147483648; 45 assume 1 + main_~i~0#1 >= -2147483648; 46 assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1; 47 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; # 0 1 forward 0 2 forward 0 3 forward 1 0 backward 1 4 forward 2 0 backward 2 5 forward 3 0 backward 3 6 forward 3 7 forward 3 8 forward 4 9 backward 4 7 backward 4 10 backward 4 11 backward 4 12 backward 4 13 backward 4 14 backward 4 15 backward 4 16 backward 4 17 backward 4 18 backward 4 1 backward 4 19 backward 4 20 backward 4 5 backward 5 2 backward 5 4 forward 6 3 backward 6 21 forward 7 3 backward 7 22 backward 7 4 forward 8 3 backward 8 22 backward 8 14 forward 8 23 forward 9 24 backward 9 4 forward 10 25 backward 10 4 forward 11 26 backward 11 4 forward 12 27 backward 12 4 forward 13 28 backward 13 4 forward 14 29 backward 14 8 backward 14 4 forward 15 30 backward 15 4 forward 16 31 backward 16 31 backward 16 23 backward 16 31 backward 16 31 backward 16 23 backward 16 32 backward 16 4 forward 17 21 backward 17 33 backward 17 4 forward 18 34 backward 18 35 backward 18 4 forward 19 36 backward 19 4 forward 20 37 backward 20 4 forward 21 6 backward 21 38 forward 21 17 forward 21 26 forward 22 28 backward 22 7 forward 22 39 forward 22 8 forward 23 8 backward 23 30 forward 23 16 forward 23 40 forward 23 41 forward 23 30 forward 23 16 forward 24 34 backward 24 35 backward 24 9 forward 25 37 backward 25 10 forward 25 31 forward 26 21 backward 26 33 backward 26 11 forward 26 27 forward 27 26 backward 27 12 forward 28 36 backward 28 13 forward 28 22 forward 29 34 backward 29 35 backward 29 14 forward 29 32 forward 30 31 backward 30 31 backward 30 23 backward 30 31 backward 30 31 backward 30 23 backward 30 32 backward 30 32 backward 30 15 forward 31 25 backward 31 42 forward 31 30 forward 31 16 forward 31 30 forward 31 16 forward 31 30 forward 31 16 forward 31 30 forward 31 16 forward 32 29 backward 32 43 backward 32 30 forward 32 30 forward 32 16 forward 32 40 forward 32 41 forward 33 39 backward 33 17 forward 33 26 forward 34 44 backward 34 24 forward 34 18 forward 34 29 forward 35 45 backward 35 24 forward 35 18 forward 35 29 forward 35 46 forward 36 38 backward 36 19 forward 36 28 forward 37 40 backward 37 20 forward 37 25 forward 38 21 backward 38 36 forward 39 22 backward 39 33 forward 40 47 backward 40 23 backward 40 32 backward 40 37 forward 41 23 backward 41 32 backward 41 45 forward 42 31 backward 42 44 forward 43 22 backward 43 14 forward 43 23 forward 43 32 forward 44 42 backward 44 34 forward 45 41 backward 45 35 forward 46 35 backward 46 47 forward 47 46 backward 47 40 forward at de.uni_freiburg.informatik.ultimate.lib.sifa.TopsortCache.lambda$2(TopsortCache.java:53) at java.base/java.util.Optional.orElseThrow(Optional.java:408) at de.uni_freiburg.informatik.ultimate.lib.sifa.TopsortCache.compute(TopsortCache.java:53) at java.base/java.util.Map.computeIfAbsent(Map.java:1003) at de.uni_freiburg.informatik.ultimate.lib.sifa.TopsortCache.topsort(TopsortCache.java:46) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:113) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-23 21:11:03,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:11:03,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-11-23 21:11:03,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182345951] [2023-11-23 21:11:03,139 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 21:11:03,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 21:11:03,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:11:03,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 21:11:03,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2023-11-23 21:11:03,142 INFO L87 Difference]: Start difference. First operand 116 states and 127 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 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) [2023-11-23 21:11:03,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:11:03,461 INFO L93 Difference]: Finished difference Result 356 states and 420 transitions. [2023-11-23 21:11:03,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 21:11:03,462 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-23 21:11:03,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:11:03,464 INFO L225 Difference]: With dead ends: 356 [2023-11-23 21:11:03,464 INFO L226 Difference]: Without dead ends: 242 [2023-11-23 21:11:03,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=191, Unknown=0, NotChecked=0, Total=342 [2023-11-23 21:11:03,467 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 241 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:11:03,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 49 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:11:03,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2023-11-23 21:11:03,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2023-11-23 21:11:03,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 240 states have (on average 1.0541666666666667) internal successors, (253), 241 states have internal predecessors, (253), 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) [2023-11-23 21:11:03,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 253 transitions. [2023-11-23 21:11:03,488 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 253 transitions. Word has length 66 [2023-11-23 21:11:03,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:11:03,490 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 253 transitions. [2023-11-23 21:11:03,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 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) [2023-11-23 21:11:03,491 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 253 transitions. [2023-11-23 21:11:03,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-23 21:11:03,494 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:11:03,494 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 10, 10, 10, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:11:03,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-23 21:11:03,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:11:03,715 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-23 21:11:03,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:11:03,715 INFO L85 PathProgramCache]: Analyzing trace with hash 932670786, now seen corresponding path program 2 times [2023-11-23 21:11:03,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:11:03,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764242367] [2023-11-23 21:11:03,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:11:03,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:11:03,738 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:11:03,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [468524949] [2023-11-23 21:11:03,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 21:11:03,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:11:03,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:11:03,740 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:11:03,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 21:11:03,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-23 21:11:03,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:11:03,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:11:03,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:11:04,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1553 backedges. 0 proven. 646 refuted. 0 times theorem prover too weak. 907 trivial. 0 not checked. [2023-11-23 21:11:04,052 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:11:04,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1553 backedges. 0 proven. 646 refuted. 0 times theorem prover too weak. 907 trivial. 0 not checked. [2023-11-23 21:11:04,281 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:11:04,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764242367] [2023-11-23 21:11:04,281 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:11:04,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468524949] [2023-11-23 21:11:04,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468524949] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:11:04,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [512233443] [2023-11-23 21:11:04,284 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-11-23 21:11:04,284 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:11:04,285 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:11:04,285 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:11:04,285 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:11:04,295 FATAL L? ?]: Ignoring exception! java.lang.IllegalStateException: "Dag" had a cycle: 0 ε 1 ※64 $Ultimate##0 2 ∅ 3 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3);assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~mem5#1, main_#t~mem6#1, main_#t~mem7#1, main_#t~mem8#1, main_~i~0#1, main_~j~0#1, main_~m~0#1, main_~n~0#1, main_~#A~0#1.base, main_~#A~0#1.offset, main_~max~0#1;havoc main_~i~0#1;havoc main_~j~0#1;main_~m~0#1 := 1000;main_~n~0#1 := 1500;call main_~#A~0#1.base, main_~#A~0#1.offset := #Ultimate.allocOnStack(4 * main_~n~0#1 * main_~n~0#1 % 4294967296);havoc main_~max~0#1;main_~i~0#1 := 0;main_~j~0#1 := 0; 4 ε 5 ※67 null 6 assume !!(main_~i~0#1 < main_~m~0#1);main_~j~0#1 := 0; 7 ※54 L24-2 8 BeginParallelComposition{ParallelCodeBlock0: assume !(main_~i~0#1 < main_~m~0#1);ParallelCodeBlock1: assume !true;}EndParallelCompositionmain_~i~0#1 := 0;main_~j~0#1 := 0;call main_#t~mem5#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset, 4);main_~max~0#1 := main_#t~mem5#1;havoc main_#t~mem5#1; 9 ※53 ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW 10 ※55 L44 11 ※56 L29 12 ※57 L29-1 13 ※58 L31 14 ※59 L38-2 15 ※60 L40-3 16 ※61 L40-2 17 ※62 L26-2 18 ※63 L46 19 ※65 L26-3 20 ※66 L41-2 21 [((assume !!(main_~j~0#1 < main_~n~0#1);havoc main_#t~nondet4#1;assume -2147483648 <= main_#t~nondet4#1 && main_#t~nondet4#1 <= 2147483647;call write~int(main_#t~nondet4#1, main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);havoc main_#t~nondet4#1;·assume 1 + main_~j~0#1 >= -2147483648;)·assume 1 + main_~j~0#1 <= 2147483647;main_~j~0#1 := 1 + main_~j~0#1;)]* 22 assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1; 23 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 24 assume !(1 + main_~i~0#1 <= 2147483647); 25 assume 1 + main_~j~0#1 >= -2147483648; 26 assume !!(main_~j~0#1 < main_~n~0#1);havoc main_#t~nondet4#1;assume -2147483648 <= main_#t~nondet4#1 && main_#t~nondet4#1 <= 2147483647;call write~int(main_#t~nondet4#1, main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);havoc main_#t~nondet4#1; 27 assume 1 + main_~j~0#1 >= -2147483648; 28 assume 1 + main_~i~0#1 >= -2147483648; 29 assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1; 30 BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition 31 assume 1 + main_~j~0#1 <= 2147483647;main_~j~0#1 := 1 + main_~j~0#1; 32 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 33 [((assume !!(main_~j~0#1 < main_~n~0#1);havoc main_#t~nondet4#1;assume -2147483648 <= main_#t~nondet4#1 && main_#t~nondet4#1 <= 2147483647;call write~int(main_#t~nondet4#1, main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);havoc main_#t~nondet4#1;·assume 1 + main_~j~0#1 >= -2147483648;)·assume 1 + main_~j~0#1 <= 2147483647;main_~j~0#1 := 1 + main_~j~0#1;)]* 34 [((assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1;·assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0;)·(BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition·assume 1 + main_~i~0#1 >= -2147483648;))]* 35 [((assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1;·assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0;)·(BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition·assume 1 + main_~i~0#1 >= -2147483648;))]* 36 [(((assume 1 + main_~i~0#1 >= -2147483648;·(assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1;·assume !!(main_~i~0#1 < main_~m~0#1);main_~j~0#1 := 0;))·[((assume !!(main_~j~0#1 < main_~n~0#1);havoc main_#t~nondet4#1;assume -2147483648 <= main_#t~nondet4#1 && main_#t~nondet4#1 <= 2147483647;call write~int(main_#t~nondet4#1, main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);havoc main_#t~nondet4#1;·assume 1 + main_~j~0#1 >= -2147483648;)·assume 1 + main_~j~0#1 <= 2147483647;main_~j~0#1 := 1 + main_~j~0#1;)]* )·BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition)]* 37 [{((assume 1 + main_~j~0#1 >= -2147483648;·assume 1 + main_~j~0#1 <= 2147483647;main_~j~0#1 := 1 + main_~j~0#1;)·assume !!(main_~j~0#1 < main_~n~0#1);call main_#t~mem6#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);BeginParallelComposition{ParallelCodeBlock0: assume main_#t~mem6#1 > main_~max~0#1;havoc main_#t~mem6#1;call main_#t~mem7#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);main_~max~0#1 := main_#t~mem7#1;havoc main_#t~mem7#1;ParallelCodeBlock1: assume !(main_#t~mem6#1 > main_~max~0#1);havoc main_#t~mem6#1;}EndParallelComposition) ∪ ((((assume 1 + main_~j~0#1 >= -2147483648;·assume 1 + main_~j~0#1 <= 2147483647;main_~j~0#1 := 1 + main_~j~0#1;)·(BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition·assume 1 + main_~i~0#1 >= -2147483648;))·[((assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1;·assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0;)·(BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition·assume 1 + main_~i~0#1 >= -2147483648;))]* )·((assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1;·assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0;)·assume !!(main_~j~0#1 < main_~n~0#1);call main_#t~mem6#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);BeginParallelComposition{ParallelCodeBlock0: assume main_#t~mem6#1 > main_~max~0#1;havoc main_#t~mem6#1;call main_#t~mem7#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);main_~max~0#1 := main_#t~mem7#1;havoc main_#t~mem7#1;ParallelCodeBlock1: assume !(main_#t~mem6#1 > main_~max~0#1);havoc main_#t~mem6#1;}EndParallelComposition))}]* 38 BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition 39 assume !!(main_~i~0#1 < main_~m~0#1);main_~j~0#1 := 0; 40 assume !!(main_~j~0#1 < main_~n~0#1);call main_#t~mem6#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);BeginParallelComposition{ParallelCodeBlock0: assume main_#t~mem6#1 > main_~max~0#1;havoc main_#t~mem6#1;call main_#t~mem7#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);main_~max~0#1 := main_#t~mem7#1;havoc main_#t~mem7#1;ParallelCodeBlock1: assume !(main_#t~mem6#1 > main_~max~0#1);havoc main_#t~mem6#1;}EndParallelComposition 41 BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition 42 BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition 43 BeginParallelComposition{ParallelCodeBlock0: assume !(main_~i~0#1 < main_~m~0#1);ParallelCodeBlock1: assume !true;}EndParallelCompositionmain_~i~0#1 := 0;main_~j~0#1 := 0;call main_#t~mem5#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset, 4);main_~max~0#1 := main_#t~mem5#1;havoc main_#t~mem5#1; 44 assume 1 + main_~i~0#1 >= -2147483648; 45 assume 1 + main_~i~0#1 >= -2147483648; 46 assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1; 47 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; # 0 1 forward 0 2 forward 0 3 forward 1 0 backward 1 4 forward 2 0 backward 2 5 forward 3 0 backward 3 6 forward 3 7 forward 3 8 forward 4 9 backward 4 7 backward 4 10 backward 4 11 backward 4 12 backward 4 13 backward 4 14 backward 4 15 backward 4 16 backward 4 17 backward 4 18 backward 4 1 backward 4 19 backward 4 20 backward 4 5 backward 5 2 backward 5 4 forward 6 3 backward 6 21 forward 7 3 backward 7 22 backward 7 4 forward 8 3 backward 8 22 backward 8 14 forward 8 23 forward 9 24 backward 9 4 forward 10 25 backward 10 4 forward 11 26 backward 11 4 forward 12 27 backward 12 4 forward 13 28 backward 13 4 forward 14 29 backward 14 8 backward 14 4 forward 15 30 backward 15 4 forward 16 31 backward 16 31 backward 16 23 backward 16 31 backward 16 31 backward 16 23 backward 16 32 backward 16 4 forward 17 21 backward 17 33 backward 17 4 forward 18 34 backward 18 35 backward 18 4 forward 19 36 backward 19 4 forward 20 37 backward 20 4 forward 21 6 backward 21 38 forward 21 17 forward 21 26 forward 22 28 backward 22 7 forward 22 39 forward 22 8 forward 23 8 backward 23 30 forward 23 16 forward 23 40 forward 23 41 forward 23 30 forward 23 16 forward 24 34 backward 24 35 backward 24 9 forward 25 37 backward 25 10 forward 25 31 forward 26 21 backward 26 33 backward 26 11 forward 26 27 forward 27 26 backward 27 12 forward 28 36 backward 28 13 forward 28 22 forward 29 34 backward 29 35 backward 29 14 forward 29 32 forward 30 31 backward 30 31 backward 30 23 backward 30 31 backward 30 31 backward 30 23 backward 30 32 backward 30 32 backward 30 15 forward 31 25 backward 31 42 forward 31 30 forward 31 16 forward 31 30 forward 31 16 forward 31 30 forward 31 16 forward 31 30 forward 31 16 forward 32 29 backward 32 43 backward 32 30 forward 32 30 forward 32 16 forward 32 40 forward 32 41 forward 33 39 backward 33 17 forward 33 26 forward 34 44 backward 34 24 forward 34 18 forward 34 29 forward 35 45 backward 35 24 forward 35 18 forward 35 29 forward 35 46 forward 36 38 backward 36 19 forward 36 28 forward 37 40 backward 37 20 forward 37 25 forward 38 21 backward 38 36 forward 39 22 backward 39 33 forward 40 47 backward 40 23 backward 40 32 backward 40 37 forward 41 23 backward 41 32 backward 41 45 forward 42 31 backward 42 44 forward 43 22 backward 43 14 forward 43 23 forward 43 32 forward 44 42 backward 44 34 forward 45 41 backward 45 35 forward 46 35 backward 46 47 forward 47 46 backward 47 40 forward at de.uni_freiburg.informatik.ultimate.lib.sifa.TopsortCache.lambda$2(TopsortCache.java:53) at java.base/java.util.Optional.orElseThrow(Optional.java:408) at de.uni_freiburg.informatik.ultimate.lib.sifa.TopsortCache.compute(TopsortCache.java:53) at java.base/java.util.Map.computeIfAbsent(Map.java:1003) at de.uni_freiburg.informatik.ultimate.lib.sifa.TopsortCache.topsort(TopsortCache.java:46) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:113) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-23 21:11:04,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:11:04,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-23 21:11:04,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96454828] [2023-11-23 21:11:04,304 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 21:11:04,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:11:04,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:11:04,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:11:04,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:11:04,306 INFO L87 Difference]: Start difference. First operand 242 states and 253 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) [2023-11-23 21:11:04,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:11:04,379 INFO L93 Difference]: Finished difference Result 309 states and 323 transitions. [2023-11-23 21:11:04,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:11:04,380 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 138 [2023-11-23 21:11:04,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:11:04,381 INFO L225 Difference]: With dead ends: 309 [2023-11-23 21:11:04,381 INFO L226 Difference]: Without dead ends: 0 [2023-11-23 21:11:04,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:11:04,383 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 51 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:11:04,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 10 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:11:04,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-23 21:11:04,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-23 21:11:04,384 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) [2023-11-23 21:11:04,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-23 21:11:04,384 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 138 [2023-11-23 21:11:04,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:11:04,385 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 21:11:04,385 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) [2023-11-23 21:11:04,385 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-23 21:11:04,385 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-23 21:11:04,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2023-11-23 21:11:04,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2023-11-23 21:11:04,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2023-11-23 21:11:04,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2023-11-23 21:11:04,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2023-11-23 21:11:04,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2023-11-23 21:11:04,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2023-11-23 21:11:04,390 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2023-11-23 21:11:04,390 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2023-11-23 21:11:04,390 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2023-11-23 21:11:04,390 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2023-11-23 21:11:04,390 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2023-11-23 21:11:04,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-23 21:11:04,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:11:04,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-23 21:11:06,151 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 31) no Hoare annotation was computed. [2023-11-23 21:11:06,151 INFO L899 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2023-11-23 21:11:06,151 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 46) no Hoare annotation was computed. [2023-11-23 21:11:06,151 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2023-11-23 21:11:06,151 INFO L899 garLoopResultBuilder]: For program point L61(line 61) no Hoare annotation was computed. [2023-11-23 21:11:06,151 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW(line 59) no Hoare annotation was computed. [2023-11-23 21:11:06,151 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2023-11-23 21:11:06,152 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2023-11-23 21:11:06,152 INFO L899 garLoopResultBuilder]: For program point L29-1(line 29) no Hoare annotation was computed. [2023-11-23 21:11:06,152 INFO L895 garLoopResultBuilder]: At program point L54-2(lines 54 62) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~m~0#1| 1000) (<= |ULTIMATE.start_main_~i~0#1| 2147483646) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483646) (= |ULTIMATE.start_main_~n~0#1| 1500)) [2023-11-23 21:11:06,152 INFO L899 garLoopResultBuilder]: For program point L46(line 46) no Hoare annotation was computed. [2023-11-23 21:11:06,152 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW(line 59) no Hoare annotation was computed. [2023-11-23 21:11:06,152 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-23 21:11:06,152 INFO L895 garLoopResultBuilder]: At program point L38-2(lines 38 47) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~m~0#1| 1000) (<= |ULTIMATE.start_main_~i~0#1| 2147483646) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483646) (= |ULTIMATE.start_main_~n~0#1| 1500)) [2023-11-23 21:11:06,152 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW(line 61) no Hoare annotation was computed. [2023-11-23 21:11:06,153 INFO L899 garLoopResultBuilder]: For program point L31(line 31) no Hoare annotation was computed. [2023-11-23 21:11:06,153 INFO L895 garLoopResultBuilder]: At program point L56-2(lines 56 60) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~m~0#1| 1000) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 1499) (<= |ULTIMATE.start_main_~j~0#1| 2147483646) (= |ULTIMATE.start_main_~n~0#1| 1500)) [2023-11-23 21:11:06,153 INFO L899 garLoopResultBuilder]: For program point L56-3(lines 56 60) no Hoare annotation was computed. [2023-11-23 21:11:06,153 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW(line 61) no Hoare annotation was computed. [2023-11-23 21:11:06,153 INFO L895 garLoopResultBuilder]: At program point L40-2(lines 40 45) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~m~0#1| 1000) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 1499) (<= |ULTIMATE.start_main_~j~0#1| 2147483646) (= |ULTIMATE.start_main_~n~0#1| 1500)) [2023-11-23 21:11:06,153 INFO L899 garLoopResultBuilder]: For program point L40-3(lines 40 45) no Hoare annotation was computed. [2023-11-23 21:11:06,153 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 44) no Hoare annotation was computed. [2023-11-23 21:11:06,154 INFO L895 garLoopResultBuilder]: At program point L24-2(lines 24 32) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~m~0#1| 1000) (<= |ULTIMATE.start_main_~i~0#1| 2147483646) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483646) (= |ULTIMATE.start_main_~n~0#1| 1500)) [2023-11-23 21:11:06,154 INFO L899 garLoopResultBuilder]: For program point L41-2(lines 41 43) no Hoare annotation was computed. [2023-11-23 21:11:06,154 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-23 21:11:06,154 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 44) no Hoare annotation was computed. [2023-11-23 21:11:06,154 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 31) no Hoare annotation was computed. [2023-11-23 21:11:06,154 INFO L899 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2023-11-23 21:11:06,154 INFO L899 garLoopResultBuilder]: For program point L59-1(line 59) no Hoare annotation was computed. [2023-11-23 21:11:06,154 INFO L895 garLoopResultBuilder]: At program point L26-2(lines 26 30) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~m~0#1| 1000) (<= |ULTIMATE.start_main_~i~0#1| 999) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483646) (= |ULTIMATE.start_main_~n~0#1| 1500)) [2023-11-23 21:11:06,154 INFO L899 garLoopResultBuilder]: For program point L26-3(lines 26 30) no Hoare annotation was computed. [2023-11-23 21:11:06,155 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 46) no Hoare annotation was computed. [2023-11-23 21:11:06,158 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-23 21:11:06,161 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:11:06,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:11:06 BoogieIcfgContainer [2023-11-23 21:11:06,173 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:11:06,174 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:11:06,174 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:11:06,174 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:11:06,175 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:10:52" (3/4) ... [2023-11-23 21:11:06,177 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 21:11:06,184 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2023-11-23 21:11:06,185 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-11-23 21:11:06,185 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-23 21:11:06,186 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 21:11:06,282 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/witness.graphml [2023-11-23 21:11:06,282 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/witness.yml [2023-11-23 21:11:06,283 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:11:06,283 INFO L158 Benchmark]: Toolchain (without parser) took 15053.54ms. Allocated memory was 151.0MB in the beginning and 285.2MB in the end (delta: 134.2MB). Free memory was 103.3MB in the beginning and 195.4MB in the end (delta: -92.1MB). Peak memory consumption was 42.7MB. Max. memory is 16.1GB. [2023-11-23 21:11:06,284 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 151.0MB. Free memory was 94.0MB in the beginning and 93.8MB in the end (delta: 184.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:11:06,284 INFO L158 Benchmark]: CACSL2BoogieTranslator took 392.76ms. Allocated memory is still 151.0MB. Free memory was 103.3MB in the beginning and 92.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 21:11:06,284 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.14ms. Allocated memory is still 151.0MB. Free memory was 92.8MB in the beginning and 90.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:11:06,285 INFO L158 Benchmark]: Boogie Preprocessor took 40.45ms. Allocated memory is still 151.0MB. Free memory was 90.7MB in the beginning and 89.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:11:06,285 INFO L158 Benchmark]: RCFGBuilder took 689.39ms. Allocated memory is still 151.0MB. Free memory was 89.6MB in the beginning and 73.4MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-23 21:11:06,286 INFO L158 Benchmark]: TraceAbstraction took 13743.38ms. Allocated memory was 151.0MB in the beginning and 285.2MB in the end (delta: 134.2MB). Free memory was 72.8MB in the beginning and 200.7MB in the end (delta: -127.8MB). Peak memory consumption was 122.7MB. Max. memory is 16.1GB. [2023-11-23 21:11:06,286 INFO L158 Benchmark]: Witness Printer took 108.75ms. Allocated memory is still 285.2MB. Free memory was 200.7MB in the beginning and 195.4MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 21:11:06,288 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 151.0MB. Free memory was 94.0MB in the beginning and 93.8MB in the end (delta: 184.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 392.76ms. Allocated memory is still 151.0MB. Free memory was 103.3MB in the beginning and 92.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.14ms. Allocated memory is still 151.0MB. Free memory was 92.8MB in the beginning and 90.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.45ms. Allocated memory is still 151.0MB. Free memory was 90.7MB in the beginning and 89.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 689.39ms. Allocated memory is still 151.0MB. Free memory was 89.6MB in the beginning and 73.4MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 13743.38ms. Allocated memory was 151.0MB in the beginning and 285.2MB in the end (delta: 134.2MB). Free memory was 72.8MB in the beginning and 200.7MB in the end (delta: -127.8MB). Peak memory consumption was 122.7MB. Max. memory is 16.1GB. * Witness Printer took 108.75ms. Allocated memory is still 285.2MB. Free memory was 200.7MB in the beginning and 195.4MB 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: 29]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 29]: 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: 31]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 59]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 59]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: 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: 13.6s, OverallIterations: 12, TraceHistogramMax: 30, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 782 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 782 mSDsluCounter, 293 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 157 mSDsCounter, 270 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 514 IncrementalHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 270 mSolverCounterUnsat, 136 mSDtfsCounter, 514 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 699 GetRequests, 619 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=242occurred in iteration=11, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 130 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 112 NumberOfFragments, 114 HoareAnnotationTreeSize, 6 FomulaSimplifications, 4345 FormulaSimplificationTreeSizeReduction, 0.9s HoareSimplificationTime, 6 FomulaSimplificationsInter, 2414 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 354 NumberOfCodeBlocks, 182 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 613 ConstructedInterpolants, 0 QuantifiedInterpolants, 1589 SizeOfPredicates, 12 NumberOfNonLiveVariables, 884 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 2712/4190 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: ((((((m <= 1000) && (i <= 2147483646)) && (0 <= j)) && (0 <= i)) && (j <= 2147483646)) && (n == 1500)) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: ((((((m <= 1000) && (i <= 2147483646)) && (0 <= j)) && (0 <= i)) && (j <= 2147483646)) && (n == 1500)) - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((m <= 1000) && (0 <= j)) && (0 <= i)) && (i <= 1499)) && (j <= 2147483646)) && (n == 1500)) - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: ((((((m <= 1000) && (i <= 999)) && (0 <= j)) && (0 <= i)) && (j <= 2147483646)) && (n == 1500)) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((((((m <= 1000) && (i <= 2147483646)) && (0 <= j)) && (0 <= i)) && (j <= 2147483646)) && (n == 1500)) - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: ((((((m <= 1000) && (0 <= j)) && (0 <= i)) && (i <= 1499)) && (j <= 2147483646)) && (n == 1500)) RESULT: Ultimate proved your program to be correct! [2023-11-23 21:11:06,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cef6143-ff4e-45cf-8319-eefee3d54402/bin/utaipan-verify-mE87zJ7Ire/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