./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/reducercommutativity/max05-1.i --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_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/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_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/reducercommutativity/max05-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/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_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/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 4e48915cf0eaefe43320bbe59bf88f5c68b2f305d293e808fa6ece9112b5c238 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:35:45,101 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:35:45,221 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-23 20:35:45,229 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:35:45,230 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:35:45,269 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:35:45,270 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:35:45,271 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:35:45,272 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:35:45,277 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:35:45,278 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:35:45,279 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:35:45,280 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:35:45,282 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:35:45,282 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:35:45,283 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:35:45,283 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:35:45,284 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:35:45,284 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:35:45,285 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:35:45,286 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:35:45,286 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:35:45,288 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:35:45,288 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:35:45,289 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:35:45,289 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:35:45,290 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:35:45,291 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:35:45,291 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:35:45,291 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:35:45,293 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:35:45,293 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:35:45,294 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:35:45,294 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:35:45,294 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:35:45,295 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:35:45,295 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:35:45,295 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:35:45,296 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:35:45,296 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:35:45,296 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:35:45,297 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:35:45,297 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:35:45,298 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:35:45,298 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:35:45,299 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:35:45,299 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:35:45,299 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:35:45,300 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:35:45,300 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_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e48915cf0eaefe43320bbe59bf88f5c68b2f305d293e808fa6ece9112b5c238 [2023-11-23 20:35:45,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:35:45,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:35:45,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:35:45,677 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:35:45,678 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:35:45,679 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/reducercommutativity/max05-1.i [2023-11-23 20:35:48,728 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:35:48,976 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:35:48,977 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/sv-benchmarks/c/reducercommutativity/max05-1.i [2023-11-23 20:35:48,987 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/data/b4f316e6a/800daa65ce604b089e4854d61f60938f/FLAG872658a99 [2023-11-23 20:35:49,010 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/data/b4f316e6a/800daa65ce604b089e4854d61f60938f [2023-11-23 20:35:49,017 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:35:49,020 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:35:49,024 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:35:49,024 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:35:49,031 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:35:49,032 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:35:49" (1/1) ... [2023-11-23 20:35:49,034 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68389f12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:49, skipping insertion in model container [2023-11-23 20:35:49,034 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:35:49" (1/1) ... [2023-11-23 20:35:49,067 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:35:49,325 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:35:49,344 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:35:49,384 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:35:49,401 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:35:49,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:49 WrapperNode [2023-11-23 20:35:49,401 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:35:49,403 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:35:49,403 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:35:49,403 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:35:49,413 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:49" (1/1) ... [2023-11-23 20:35:49,423 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:49" (1/1) ... [2023-11-23 20:35:49,451 INFO L138 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 78 [2023-11-23 20:35:49,452 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:35:49,453 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:35:49,453 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:35:49,454 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:35:49,464 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:49" (1/1) ... [2023-11-23 20:35:49,464 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:49" (1/1) ... [2023-11-23 20:35:49,467 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:49" (1/1) ... [2023-11-23 20:35:49,468 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:49" (1/1) ... [2023-11-23 20:35:49,475 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:49" (1/1) ... [2023-11-23 20:35:49,480 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:49" (1/1) ... [2023-11-23 20:35:49,482 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:49" (1/1) ... [2023-11-23 20:35:49,484 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:49" (1/1) ... [2023-11-23 20:35:49,487 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:35:49,488 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:35:49,488 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:35:49,489 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:35:49,490 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:49" (1/1) ... [2023-11-23 20:35:49,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:35:49,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:35:49,539 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:35:49,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:35:49,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:35:49,592 INFO L130 BoogieDeclarations]: Found specification of procedure max [2023-11-23 20:35:49,593 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2023-11-23 20:35:49,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:35:49,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:35:49,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:35:49,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:35:49,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:35:49,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:35:49,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:35:49,691 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:35:49,694 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:35:50,035 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:35:50,143 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:35:50,143 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-23 20:35:50,145 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:35:50 BoogieIcfgContainer [2023-11-23 20:35:50,146 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:35:50,149 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:35:50,150 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:35:50,154 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:35:50,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:35:49" (1/3) ... [2023-11-23 20:35:50,156 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c87a7d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:35:50, skipping insertion in model container [2023-11-23 20:35:50,156 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:49" (2/3) ... [2023-11-23 20:35:50,157 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c87a7d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:35:50, skipping insertion in model container [2023-11-23 20:35:50,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:35:50" (3/3) ... [2023-11-23 20:35:50,159 INFO L112 eAbstractionObserver]: Analyzing ICFG max05-1.i [2023-11-23 20:35:50,185 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:35:50,186 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-23 20:35:50,247 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:35:50,257 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;@136a354a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:35:50,257 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-23 20:35:50,262 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 16 states have (on average 1.6875) internal successors, (27), 24 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 20:35:50,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-23 20:35:50,272 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:50,272 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-23 20:35:50,273 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-23 20:35:50,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:50,281 INFO L85 PathProgramCache]: Analyzing trace with hash 131077, now seen corresponding path program 1 times [2023-11-23 20:35:50,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:50,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092870824] [2023-11-23 20:35:50,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:50,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:50,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:50,615 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 20:35:50,616 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:50,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092870824] [2023-11-23 20:35:50,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092870824] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:50,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:35:50,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:35:50,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022623771] [2023-11-23 20:35:50,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:50,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:35:50,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:50,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:35:50,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:35:50,680 INFO L87 Difference]: Start difference. First operand has 29 states, 16 states have (on average 1.6875) internal successors, (27), 24 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:35:50,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:50,822 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2023-11-23 20:35:50,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:35:50,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-23 20:35:50,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:50,832 INFO L225 Difference]: With dead ends: 57 [2023-11-23 20:35:50,833 INFO L226 Difference]: Without dead ends: 30 [2023-11-23 20:35:50,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:35:50,842 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:50,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 68 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:35:50,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-11-23 20:35:50,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-11-23 20:35:50,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 26 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 20:35:50,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2023-11-23 20:35:50,893 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 3 [2023-11-23 20:35:50,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:50,894 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2023-11-23 20:35:50,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:35:50,894 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2023-11-23 20:35:50,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 20:35:50,895 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:50,895 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-23 20:35:50,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:35:50,897 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-23 20:35:50,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:50,899 INFO L85 PathProgramCache]: Analyzing trace with hash -389978011, now seen corresponding path program 1 times [2023-11-23 20:35:50,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:50,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700945071] [2023-11-23 20:35:50,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:50,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:51,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:35:51,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:51,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700945071] [2023-11-23 20:35:51,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700945071] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:35:51,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44346023] [2023-11-23 20:35:51,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:51,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:51,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:35:51,121 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:35:51,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 20:35:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:51,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 20:35:51,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:35:51,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:35:51,291 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:35:51,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44346023] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:51,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 20:35:51,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-23 20:35:51,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663536884] [2023-11-23 20:35:51,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:51,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 20:35:51,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:51,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 20:35:51,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 20:35:51,296 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:35:51,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:51,357 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2023-11-23 20:35:51,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 20:35:51,358 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-23 20:35:51,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:51,359 INFO L225 Difference]: With dead ends: 30 [2023-11-23 20:35:51,359 INFO L226 Difference]: Without dead ends: 29 [2023-11-23 20:35:51,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-23 20:35:51,362 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 9 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 60 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 20:35:51,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 60 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:35:51,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-11-23 20:35:51,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-11-23 20:35:51,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 25 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 20:35:51,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2023-11-23 20:35:51,371 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 6 [2023-11-23 20:35:51,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:51,371 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2023-11-23 20:35:51,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:35:51,372 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2023-11-23 20:35:51,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 20:35:51,372 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:51,373 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-23 20:35:51,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 20:35:51,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:51,594 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-23 20:35:51,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:51,595 INFO L85 PathProgramCache]: Analyzing trace with hash 795583620, now seen corresponding path program 1 times [2023-11-23 20:35:51,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:51,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327241194] [2023-11-23 20:35:51,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:51,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:51,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:51,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 20:35:51,664 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:51,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327241194] [2023-11-23 20:35:51,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327241194] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:51,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:35:51,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:35:51,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716624976] [2023-11-23 20:35:51,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:51,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:35:51,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:51,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:35:51,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:35:51,668 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:35:51,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:51,691 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2023-11-23 20:35:51,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:35:51,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-23 20:35:51,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:51,693 INFO L225 Difference]: With dead ends: 29 [2023-11-23 20:35:51,693 INFO L226 Difference]: Without dead ends: 28 [2023-11-23 20:35:51,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:35:51,696 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:51,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:35:51,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-23 20:35:51,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2023-11-23 20:35:51,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.5625) internal successors, (25), 22 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 20:35:51,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2023-11-23 20:35:51,702 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 7 [2023-11-23 20:35:51,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:51,703 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2023-11-23 20:35:51,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:35:51,703 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2023-11-23 20:35:51,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 20:35:51,704 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:51,704 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:35:51,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 20:35:51,705 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-23 20:35:51,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:51,706 INFO L85 PathProgramCache]: Analyzing trace with hash 55962955, now seen corresponding path program 1 times [2023-11-23 20:35:51,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:51,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963608006] [2023-11-23 20:35:51,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:51,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:51,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:51,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:35:51,784 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:51,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963608006] [2023-11-23 20:35:51,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963608006] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:35:51,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214281426] [2023-11-23 20:35:51,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:51,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:51,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:35:51,787 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:35:51,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 20:35:51,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:51,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 20:35:51,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:35:51,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:35:51,913 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:35:51,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:35:51,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214281426] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:35:51,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1964467326] [2023-11-23 20:35:51,988 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-23 20:35:51,988 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:35:51,992 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:35:51,998 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:35:51,999 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 20:35:52,850 INFO L197 IcfgInterpreter]: Interpreting procedure max with input of size 10 for LOIs [2023-11-23 20:35:52,877 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 20:35:53,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1964467326] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:53,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-23 20:35:53,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 4, 4] total 15 [2023-11-23 20:35:53,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490710798] [2023-11-23 20:35:53,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:53,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 20:35:53,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:53,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 20:35:53,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-11-23 20:35:53,072 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:35:53,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:53,273 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2023-11-23 20:35:53,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 20:35:53,274 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 20:35:53,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:53,277 INFO L225 Difference]: With dead ends: 49 [2023-11-23 20:35:53,277 INFO L226 Difference]: Without dead ends: 29 [2023-11-23 20:35:53,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2023-11-23 20:35:53,285 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 23 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:53,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 53 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:35:53,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-11-23 20:35:53,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-11-23 20:35:53,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 25 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 20:35:53,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2023-11-23 20:35:53,308 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 9 [2023-11-23 20:35:53,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:53,308 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2023-11-23 20:35:53,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:35:53,309 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2023-11-23 20:35:53,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 20:35:53,310 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:53,311 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:35:53,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-23 20:35:53,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:53,534 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-23 20:35:53,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:53,535 INFO L85 PathProgramCache]: Analyzing trace with hash 745135019, now seen corresponding path program 1 times [2023-11-23 20:35:53,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:53,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822841536] [2023-11-23 20:35:53,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:53,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:53,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 20:35:53,646 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:53,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822841536] [2023-11-23 20:35:53,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822841536] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:35:53,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918607083] [2023-11-23 20:35:53,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:53,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:53,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:35:53,650 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:35:53,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 20:35:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:53,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 20:35:53,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:35:53,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 20:35:53,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:35:53,791 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 20:35:53,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918607083] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:35:53,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [832886574] [2023-11-23 20:35:53,797 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-23 20:35:53,798 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:35:53,798 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:35:53,799 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:35:53,799 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 20:35:54,282 INFO L197 IcfgInterpreter]: Interpreting procedure max with input of size 10 for LOIs [2023-11-23 20:35:54,375 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 20:35:54,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [832886574] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:54,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-23 20:35:54,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 4, 4] total 15 [2023-11-23 20:35:54,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551182869] [2023-11-23 20:35:54,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:54,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 20:35:54,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:54,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 20:35:54,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-11-23 20:35:54,634 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:35:54,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:54,767 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2023-11-23 20:35:54,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 20:35:54,768 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-23 20:35:54,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:54,769 INFO L225 Difference]: With dead ends: 29 [2023-11-23 20:35:54,769 INFO L226 Difference]: Without dead ends: 28 [2023-11-23 20:35:54,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2023-11-23 20:35:54,771 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 17 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:54,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 43 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:35:54,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-23 20:35:54,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-11-23 20:35:54,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 24 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 20:35:54,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2023-11-23 20:35:54,778 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 12 [2023-11-23 20:35:54,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:54,778 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2023-11-23 20:35:54,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:35:54,779 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2023-11-23 20:35:54,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-23 20:35:54,780 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:54,780 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:35:54,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 20:35:54,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:54,993 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-23 20:35:54,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:54,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1624349160, now seen corresponding path program 1 times [2023-11-23 20:35:54,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:54,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125109840] [2023-11-23 20:35:54,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:54,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:55,086 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 20:35:55,086 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:55,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125109840] [2023-11-23 20:35:55,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125109840] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:35:55,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945413408] [2023-11-23 20:35:55,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:55,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:55,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:35:55,089 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:35:55,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 20:35:55,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:55,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 20:35:55,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:35:55,187 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 20:35:55,187 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:35:55,224 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 20:35:55,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945413408] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:35:55,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1822742659] [2023-11-23 20:35:55,231 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-23 20:35:55,231 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:35:55,232 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:35:55,233 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:35:55,233 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 20:35:55,614 INFO L197 IcfgInterpreter]: Interpreting procedure max with input of size 10 for LOIs [2023-11-23 20:35:55,712 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 20:35:55,980 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '731#(and (<= 1 |#StackHeapBarrier|) (= max_~x.offset 0) (<= 2147483647 |max_#t~post1|) (<= 2 |max_#in~x.base|) (<= 2 max_~x.base) (<= 0 max_~i~0) (= |max_#in~x.offset| 0))' at error location [2023-11-23 20:35:55,980 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 20:35:55,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 20:35:55,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-23 20:35:55,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249371574] [2023-11-23 20:35:55,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 20:35:55,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 20:35:55,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:55,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 20:35:55,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-11-23 20:35:55,983 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:35:56,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:56,054 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2023-11-23 20:35:56,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 20:35:56,055 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-23 20:35:56,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:56,055 INFO L225 Difference]: With dead ends: 57 [2023-11-23 20:35:56,056 INFO L226 Difference]: Without dead ends: 34 [2023-11-23 20:35:56,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2023-11-23 20:35:56,057 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 12 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:56,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 77 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:35:56,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-11-23 20:35:56,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2023-11-23 20:35:56,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 25 states have (on average 1.32) internal successors, (33), 30 states have internal predecessors, (33), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 20:35:56,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2023-11-23 20:35:56,067 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 13 [2023-11-23 20:35:56,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:56,067 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2023-11-23 20:35:56,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:35:56,067 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2023-11-23 20:35:56,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-23 20:35:56,068 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:56,069 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-23 20:35:56,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-23 20:35:56,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:56,291 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-23 20:35:56,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:56,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1209582104, now seen corresponding path program 2 times [2023-11-23 20:35:56,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:56,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207470979] [2023-11-23 20:35:56,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:56,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:56,356 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-23 20:35:56,356 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:56,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207470979] [2023-11-23 20:35:56,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207470979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:56,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:35:56,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:35:56,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682857824] [2023-11-23 20:35:56,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:56,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:35:56,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:56,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:35:56,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:35:56,359 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:35:56,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:56,382 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2023-11-23 20:35:56,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:35:56,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-23 20:35:56,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:56,383 INFO L225 Difference]: With dead ends: 34 [2023-11-23 20:35:56,386 INFO L226 Difference]: Without dead ends: 32 [2023-11-23 20:35:56,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:35:56,390 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:56,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:35:56,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-11-23 20:35:56,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2023-11-23 20:35:56,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 26 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 20:35:56,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2023-11-23 20:35:56,404 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 19 [2023-11-23 20:35:56,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:56,405 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2023-11-23 20:35:56,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:35:56,406 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2023-11-23 20:35:56,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-23 20:35:56,407 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:56,407 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:35:56,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 20:35:56,408 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-23 20:35:56,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:56,408 INFO L85 PathProgramCache]: Analyzing trace with hash 893963879, now seen corresponding path program 1 times [2023-11-23 20:35:56,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:56,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173277364] [2023-11-23 20:35:56,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:56,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:56,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:56,524 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-23 20:35:56,524 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:56,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173277364] [2023-11-23 20:35:56,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173277364] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:35:56,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357815487] [2023-11-23 20:35:56,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:56,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:56,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:35:56,526 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:35:56,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 20:35:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:56,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 20:35:56,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:35:56,628 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-23 20:35:56,628 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:35:56,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357815487] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:56,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 20:35:56,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-23 20:35:56,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69088669] [2023-11-23 20:35:56,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:56,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:35:56,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:56,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:35:56,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 20:35:56,632 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 20:35:56,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:56,677 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2023-11-23 20:35:56,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:35:56,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2023-11-23 20:35:56,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:56,679 INFO L225 Difference]: With dead ends: 38 [2023-11-23 20:35:56,679 INFO L226 Difference]: Without dead ends: 37 [2023-11-23 20:35:56,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 20:35:56,680 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:56,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 29 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:35:56,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-23 20:35:56,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2023-11-23 20:35:56,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 25 states have (on average 1.24) internal successors, (31), 28 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 20:35:56,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2023-11-23 20:35:56,687 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 29 [2023-11-23 20:35:56,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:56,689 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2023-11-23 20:35:56,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 20:35:56,690 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2023-11-23 20:35:56,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-23 20:35:56,691 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:56,691 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:35:56,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 20:35:56,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:56,923 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-23 20:35:56,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:56,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1943076566, now seen corresponding path program 1 times [2023-11-23 20:35:56,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:56,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235494262] [2023-11-23 20:35:56,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:56,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:56,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:57,023 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-23 20:35:57,023 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:57,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235494262] [2023-11-23 20:35:57,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235494262] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:35:57,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227089487] [2023-11-23 20:35:57,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:57,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:57,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:35:57,025 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:35:57,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 20:35:57,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:57,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 20:35:57,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:35:57,136 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-23 20:35:57,136 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:35:57,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227089487] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:57,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 20:35:57,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-23 20:35:57,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655193529] [2023-11-23 20:35:57,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:57,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:35:57,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:57,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:35:57,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 20:35:57,139 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 20:35:57,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:57,169 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2023-11-23 20:35:57,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:35:57,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2023-11-23 20:35:57,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:57,170 INFO L225 Difference]: With dead ends: 38 [2023-11-23 20:35:57,171 INFO L226 Difference]: Without dead ends: 37 [2023-11-23 20:35:57,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 20:35:57,172 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:57,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 30 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:35:57,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-23 20:35:57,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2023-11-23 20:35:57,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 29 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 20:35:57,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2023-11-23 20:35:57,180 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 30 [2023-11-23 20:35:57,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:57,180 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2023-11-23 20:35:57,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 20:35:57,181 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2023-11-23 20:35:57,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-23 20:35:57,182 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:57,182 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:35:57,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 20:35:57,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:57,400 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-23 20:35:57,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:57,400 INFO L85 PathProgramCache]: Analyzing trace with hash 105832801, now seen corresponding path program 1 times [2023-11-23 20:35:57,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:57,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944077004] [2023-11-23 20:35:57,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:57,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:57,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:57,509 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-23 20:35:57,510 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:57,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944077004] [2023-11-23 20:35:57,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944077004] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:35:57,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535558059] [2023-11-23 20:35:57,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:57,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:57,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:35:57,512 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:35:57,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 20:35:57,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:57,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 20:35:57,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:35:57,698 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-23 20:35:57,698 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:35:57,812 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-23 20:35:57,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535558059] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:35:57,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [225604645] [2023-11-23 20:35:57,816 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-11-23 20:35:57,816 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:35:57,816 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:35:57,817 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:35:57,817 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 20:35:58,316 INFO L197 IcfgInterpreter]: Interpreting procedure max with input of size 10 for LOIs [2023-11-23 20:35:58,392 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 20:35:59,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [225604645] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:59,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-23 20:35:59,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5, 8, 9] total 25 [2023-11-23 20:35:59,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612749791] [2023-11-23 20:35:59,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:59,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 20:35:59,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:59,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 20:35:59,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=522, Unknown=1, NotChecked=0, Total=600 [2023-11-23 20:35:59,056 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 13 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 20:35:59,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:59,307 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2023-11-23 20:35:59,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 20:35:59,308 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2023-11-23 20:35:59,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:59,309 INFO L225 Difference]: With dead ends: 37 [2023-11-23 20:35:59,309 INFO L226 Difference]: Without dead ends: 35 [2023-11-23 20:35:59,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 65 SyntacticMatches, 8 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=82, Invalid=567, Unknown=1, NotChecked=0, Total=650 [2023-11-23 20:35:59,310 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 24 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:59,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 24 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 138 Invalid, 4 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 20:35:59,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-11-23 20:35:59,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-11-23 20:35:59,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 31 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 20:35:59,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2023-11-23 20:35:59,317 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 31 [2023-11-23 20:35:59,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:59,338 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2023-11-23 20:35:59,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 20:35:59,338 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2023-11-23 20:35:59,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-23 20:35:59,341 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:59,342 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:35:59,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 20:35:59,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 20:35:59,558 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-23 20:35:59,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:59,559 INFO L85 PathProgramCache]: Analyzing trace with hash 359077316, now seen corresponding path program 1 times [2023-11-23 20:35:59,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:59,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051041846] [2023-11-23 20:35:59,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:59,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:59,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:59,660 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-23 20:35:59,661 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:59,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051041846] [2023-11-23 20:35:59,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051041846] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:35:59,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238000312] [2023-11-23 20:35:59,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:59,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:59,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:35:59,663 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:35:59,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 20:35:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:59,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 20:35:59,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:35:59,847 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 20:35:59,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:35:59,948 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 20:35:59,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238000312] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:35:59,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [496374355] [2023-11-23 20:35:59,953 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2023-11-23 20:35:59,953 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:35:59,953 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:35:59,954 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:35:59,954 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 20:36:00,622 INFO L197 IcfgInterpreter]: Interpreting procedure max with input of size 10 for LOIs [2023-11-23 20:36:00,768 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 20:36:01,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [496374355] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:36:01,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-23 20:36:01,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [5, 8, 9] total 26 [2023-11-23 20:36:01,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632139157] [2023-11-23 20:36:01,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:36:01,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 20:36:01,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:36:01,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 20:36:01,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=563, Unknown=3, NotChecked=0, Total=650 [2023-11-23 20:36:01,760 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 14 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 20:36:02,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:36:02,006 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2023-11-23 20:36:02,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 20:36:02,007 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2023-11-23 20:36:02,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:36:02,008 INFO L225 Difference]: With dead ends: 35 [2023-11-23 20:36:02,008 INFO L226 Difference]: Without dead ends: 0 [2023-11-23 20:36:02,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 69 SyntacticMatches, 12 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=89, Invalid=610, Unknown=3, NotChecked=0, Total=702 [2023-11-23 20:36:02,009 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:36:02,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 154 Invalid, 3 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 20:36:02,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-23 20:36:02,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-23 20:36:02,011 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 20:36:02,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-23 20:36:02,011 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2023-11-23 20:36:02,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:36:02,011 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 20:36:02,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 20:36:02,012 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-23 20:36:02,012 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-23 20:36:02,015 INFO L805 garLoopResultBuilder]: Registering result SAFE for location maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 8 remaining) [2023-11-23 20:36:02,015 INFO L805 garLoopResultBuilder]: Registering result SAFE for location maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 8 remaining) [2023-11-23 20:36:02,016 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 8 remaining) [2023-11-23 20:36:02,016 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 8 remaining) [2023-11-23 20:36:02,016 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 8 remaining) [2023-11-23 20:36:02,016 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 8 remaining) [2023-11-23 20:36:02,016 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 8 remaining) [2023-11-23 20:36:02,017 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 8 remaining) [2023-11-23 20:36:02,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 20:36:02,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:36:02,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-23 20:36:02,507 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 15 24) the Hoare annotation is: true [2023-11-23 20:36:02,507 INFO L899 garLoopResultBuilder]: For program point maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2023-11-23 20:36:02,507 INFO L899 garLoopResultBuilder]: For program point maxEXIT(lines 15 24) no Hoare annotation was computed. [2023-11-23 20:36:02,507 INFO L899 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2023-11-23 20:36:02,507 INFO L899 garLoopResultBuilder]: For program point L20-4(line 20) no Hoare annotation was computed. [2023-11-23 20:36:02,507 INFO L895 garLoopResultBuilder]: At program point L20-5(lines 20 22) the Hoare annotation is: (let ((.cse0 (= max_~x.offset 0))) (or (not (= |max_#in~x.offset| 0)) (< |max_#in~x.base| 2) (< |#StackHeapBarrier| 1) (and (= max_~ret~0 0) (= max_~x.base |max_#in~x.base|) .cse0 (= max_~i~0 0)) (and (exists ((v_max_~i~0_55 Int)) (and (<= 1 max_~i~0) .cse0 (<= 2 max_~x.base) (<= 0 v_max_~i~0_55))) (<= max_~i~0 2147483647)))) [2023-11-23 20:36:02,508 INFO L899 garLoopResultBuilder]: For program point maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2023-11-23 20:36:02,508 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 44) no Hoare annotation was computed. [2023-11-23 20:36:02,508 INFO L899 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2023-11-23 20:36:02,508 INFO L899 garLoopResultBuilder]: For program point L44-1(line 44) no Hoare annotation was computed. [2023-11-23 20:36:02,508 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 34) no Hoare annotation was computed. [2023-11-23 20:36:02,508 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 43) no Hoare annotation was computed. [2023-11-23 20:36:02,508 INFO L895 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: (and (<= 1 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (exists ((|v_#memory_int_67| (Array Int (Array Int Int)))) (let ((.cse0 (select |v_#memory_int_67| |ULTIMATE.start_main_~#x~0#1.base|))) (and (= (store |v_#memory_int_67| |ULTIMATE.start_main_~#x~0#1.base| (store (store .cse0 0 (select .cse0 4)) 4 |ULTIMATE.start_main_~temp~0#1|)) |#memory_int|) (= (select .cse0 0) |ULTIMATE.start_main_~temp~0#1|))))) [2023-11-23 20:36:02,508 INFO L899 garLoopResultBuilder]: For program point L41-1(line 41) no Hoare annotation was computed. [2023-11-23 20:36:02,509 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 34) no Hoare annotation was computed. [2023-11-23 20:36:02,509 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-23 20:36:02,509 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 43) no Hoare annotation was computed. [2023-11-23 20:36:02,509 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-23 20:36:02,509 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (and (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0)) [2023-11-23 20:36:02,509 INFO L899 garLoopResultBuilder]: For program point L38-1(line 38) no Hoare annotation was computed. [2023-11-23 20:36:02,509 INFO L899 garLoopResultBuilder]: For program point L34-3(line 34) no Hoare annotation was computed. [2023-11-23 20:36:02,509 INFO L899 garLoopResultBuilder]: For program point L34-4(line 34) no Hoare annotation was computed. [2023-11-23 20:36:02,509 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 44) no Hoare annotation was computed. [2023-11-23 20:36:02,510 INFO L895 garLoopResultBuilder]: At program point L34-5(lines 34 36) the Hoare annotation is: (let ((.cse0 (<= 1 |#StackHeapBarrier|)) (.cse1 (<= 2 |ULTIMATE.start_main_~#x~0#1.base|)) (.cse2 (= |ULTIMATE.start_main_~#x~0#1.offset| 0))) (or (and .cse0 (= |ULTIMATE.start_main_~i~1#1| 0) .cse1 .cse2) (and .cse0 (<= |ULTIMATE.start_main_~i~1#1| 2147483647) .cse1 .cse2 (<= 1 |ULTIMATE.start_main_~i~1#1|)))) [2023-11-23 20:36:02,510 INFO L895 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (and (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0)) [2023-11-23 20:36:02,510 INFO L899 garLoopResultBuilder]: For program point L47-1(line 47) no Hoare annotation was computed. [2023-11-23 20:36:02,510 INFO L899 garLoopResultBuilder]: For program point L43-3(line 43) no Hoare annotation was computed. [2023-11-23 20:36:02,510 INFO L899 garLoopResultBuilder]: For program point L43-4(line 43) no Hoare annotation was computed. [2023-11-23 20:36:02,510 INFO L895 garLoopResultBuilder]: At program point L43-5(lines 43 45) the Hoare annotation is: (and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648))) [2023-11-23 20:36:02,514 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:36:02,517 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 20:36:02,536 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expression #in~x!offset has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression [2023-11-23 20:36:02,537 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expression #in~x!base has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression [2023-11-23 20:36:02,537 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expression ~x!base has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression [2023-11-23 20:36:02,537 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expression #in~x!base has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression [2023-11-23 20:36:02,538 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expression ~x!offset has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression [2023-11-23 20:36:02,538 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (exists v_max_~i~0_55 : int :: ((1 <= ~i~0 && ~x!offset == 0) && 2 <= ~x!base) && 0 <= v_max_~i~0_55) could not be translated [2023-11-23 20:36:02,539 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 08:36:02 BoogieIcfgContainer [2023-11-23 20:36:02,540 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 20:36:02,540 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:36:02,540 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:36:02,541 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:36:02,541 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:35:50" (3/4) ... [2023-11-23 20:36:02,544 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 20:36:02,547 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure max [2023-11-23 20:36:02,554 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2023-11-23 20:36:02,555 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-11-23 20:36:02,555 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-23 20:36:02,555 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 20:36:02,667 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/witness.graphml [2023-11-23 20:36:02,668 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/bin/utaipan-verify-mE87zJ7Ire/witness.yml [2023-11-23 20:36:02,668 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:36:02,668 INFO L158 Benchmark]: Toolchain (without parser) took 13648.87ms. Allocated memory was 201.3MB in the beginning and 293.6MB in the end (delta: 92.3MB). Free memory was 157.6MB in the beginning and 169.1MB in the end (delta: -11.5MB). Peak memory consumption was 81.1MB. Max. memory is 16.1GB. [2023-11-23 20:36:02,669 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 201.3MB. Free memory was 178.1MB in the beginning and 177.9MB in the end (delta: 142.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:36:02,669 INFO L158 Benchmark]: CACSL2BoogieTranslator took 378.07ms. Allocated memory is still 201.3MB. Free memory was 157.5MB in the beginning and 146.6MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 20:36:02,670 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.52ms. Allocated memory is still 201.3MB. Free memory was 146.6MB in the beginning and 144.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:36:02,670 INFO L158 Benchmark]: Boogie Preprocessor took 34.13ms. Allocated memory is still 201.3MB. Free memory was 144.9MB in the beginning and 143.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:36:02,670 INFO L158 Benchmark]: RCFGBuilder took 657.82ms. Allocated memory is still 201.3MB. Free memory was 143.5MB in the beginning and 126.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-23 20:36:02,671 INFO L158 Benchmark]: TraceAbstraction took 12390.23ms. Allocated memory was 201.3MB in the beginning and 293.6MB in the end (delta: 92.3MB). Free memory was 126.0MB in the beginning and 174.4MB in the end (delta: -48.3MB). Peak memory consumption was 45.5MB. Max. memory is 16.1GB. [2023-11-23 20:36:02,671 INFO L158 Benchmark]: Witness Printer took 127.53ms. Allocated memory is still 293.6MB. Free memory was 174.4MB in the beginning and 169.1MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 20:36:02,674 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 201.3MB. Free memory was 178.1MB in the beginning and 177.9MB in the end (delta: 142.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 378.07ms. Allocated memory is still 201.3MB. Free memory was 157.5MB in the beginning and 146.6MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.52ms. Allocated memory is still 201.3MB. Free memory was 146.6MB in the beginning and 144.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.13ms. Allocated memory is still 201.3MB. Free memory was 144.9MB in the beginning and 143.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 657.82ms. Allocated memory is still 201.3MB. Free memory was 143.5MB in the beginning and 126.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 12390.23ms. Allocated memory was 201.3MB in the beginning and 293.6MB in the end (delta: 92.3MB). Free memory was 126.0MB in the beginning and 174.4MB in the end (delta: -48.3MB). Peak memory consumption was 45.5MB. Max. memory is 16.1GB. * Witness Printer took 127.53ms. Allocated memory is still 293.6MB. Free memory was 174.4MB in the beginning and 169.1MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #in~x!offset has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #in~x!base has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression ~x!base has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #in~x!base has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression ~x!offset has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (exists v_max_~i~0_55 : int :: ((1 <= ~i~0 && ~x!offset == 0) && 2 <= ~x!base) && 0 <= v_max_~i~0_55) could not be translated * 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: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 34]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 34]: 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: 43]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 43]: 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 2 procedures, 29 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 12.3s, OverallIterations: 11, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7 mSolverCounterUnknown, 106 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 100 mSDsluCounter, 462 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 297 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 631 IncrementalHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 165 mSDtfsCounter, 631 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 400 GetRequests, 260 SyntacticMatches, 23 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=10, InterpolantAutomatonStates: 71, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 13 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 27 PreInvPairs, 38 NumberOfFragments, 167 HoareAnnotationTreeSize, 27 FomulaSimplifications, 374 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 248 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 357 NumberOfCodeBlocks, 357 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 432 ConstructedInterpolants, 0 QuantifiedInterpolants, 658 SizeOfPredicates, 11 NumberOfNonLiveVariables, 873 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 24 InterpolantComputations, 6 PerfectInterpolantSequences, 181/272 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 2.9s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 8, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 61, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 145, TOOLS_POST_TIME: 2.0s, TOOLS_POST_CALL_APPLICATIONS: 14, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 8, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 167, TOOLS_QUANTIFIERELIM_TIME: 2.0s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.2s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 289, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 25, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 16, DOMAIN_WIDEN_TIME: 0.3s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 26, DOMAIN_ISSUBSETEQ_TIME: 0.2s, DOMAIN_ISBOTTOM_APPLICATIONS: 61, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 10, LOOP_SUMMARIZER_CACHE_MISSES: 10, LOOP_SUMMARIZER_OVERALL_TIME: 2.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 2.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 26, CALL_SUMMARIZER_APPLICATIONS: 8, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME: 0.1s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.1s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 763, DAG_COMPRESSION_RETAINED_NODES: 197, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((i == 0) || ((i <= 2147483647) && (1 <= i))) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 43]: Loop Invariant Derived loop invariant: (((((ret2 <= 2147483647) && (0 <= i)) && (0 <= (ret + 2147483648))) && (ret <= 2147483647)) && (0 <= (ret2 + 2147483648))) RESULT: Ultimate proved your program to be correct! [2023-11-23 20:36:02,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea98f1aa-ad30-4c0e-ad21-eb57778fecd0/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