./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/du-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06810c3f-a638-40b5-ae9b-0c53c3669e74/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06810c3f-a638-40b5-ae9b-0c53c3669e74/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_06810c3f-a638-40b5-ae9b-0c53c3669e74/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06810c3f-a638-40b5-ae9b-0c53c3669e74/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/du-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06810c3f-a638-40b5-ae9b-0c53c3669e74/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06810c3f-a638-40b5-ae9b-0c53c3669e74/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 64bit --witnessprinter.graph.data.programhash dc1aa558e8966dd31218aa17494259e08e3048f7220d79561139d1f3451a8f14 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:33:22,084 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:33:22,213 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06810c3f-a638-40b5-ae9b-0c53c3669e74/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-23 20:33:22,227 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:33:22,228 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:33:22,279 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:33:22,284 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:33:22,285 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:33:22,286 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:33:22,293 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:33:22,293 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:33:22,294 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:33:22,295 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:33:22,297 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:33:22,298 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:33:22,298 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:33:22,299 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:33:22,299 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:33:22,300 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:33:22,301 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:33:22,301 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:33:22,302 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:33:22,304 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:33:22,304 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:33:22,305 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:33:22,306 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:33:22,306 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:33:22,331 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:33:22,332 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:33:22,332 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:33:22,334 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:33:22,335 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:33:22,335 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:33:22,335 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:33:22,336 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:33:22,336 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:33:22,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:33:22,337 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:33:22,337 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:33:22,337 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:33:22,338 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:33:22,338 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:33:22,339 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:33:22,339 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:33:22,340 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:33:22,340 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:33:22,340 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_06810c3f-a638-40b5-ae9b-0c53c3669e74/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06810c3f-a638-40b5-ae9b-0c53c3669e74/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc1aa558e8966dd31218aa17494259e08e3048f7220d79561139d1f3451a8f14 [2023-11-23 20:33:22,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:33:22,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:33:22,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:33:22,796 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:33:22,799 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:33:22,801 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06810c3f-a638-40b5-ae9b-0c53c3669e74/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/busybox-1.22.0/du-2.i [2023-11-23 20:33:26,475 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:33:27,210 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:33:27,211 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06810c3f-a638-40b5-ae9b-0c53c3669e74/sv-benchmarks/c/busybox-1.22.0/du-2.i [2023-11-23 20:33:27,251 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06810c3f-a638-40b5-ae9b-0c53c3669e74/bin/utaipan-verify-mE87zJ7Ire/data/51701fff1/0701cb1bcecd473c961c1750ec51bd47/FLAG4dcb98ab9 [2023-11-23 20:33:27,270 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06810c3f-a638-40b5-ae9b-0c53c3669e74/bin/utaipan-verify-mE87zJ7Ire/data/51701fff1/0701cb1bcecd473c961c1750ec51bd47 [2023-11-23 20:33:27,274 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:33:27,276 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:33:27,278 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:33:27,278 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:33:27,286 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:33:27,287 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:33:27" (1/1) ... [2023-11-23 20:33:27,289 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d998fb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:27, skipping insertion in model container [2023-11-23 20:33:27,289 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:33:27" (1/1) ... [2023-11-23 20:33:27,445 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:33:30,108 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:33:30,143 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:33:30,444 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:33:30,749 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:33:30,749 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:33:30,749 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:33:30,750 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:33:30,758 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:33:30,759 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:30 WrapperNode [2023-11-23 20:33:30,759 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:33:30,760 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:33:30,761 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:33:30,761 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:33:30,769 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:30" (1/1) ... [2023-11-23 20:33:30,837 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:30" (1/1) ... [2023-11-23 20:33:30,996 INFO L138 Inliner]: procedures = 670, calls = 592, calls flagged for inlining = 35, calls inlined = 33, statements flattened = 2273 [2023-11-23 20:33:30,997 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:33:30,998 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:33:30,998 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:33:30,999 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:33:31,009 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:30" (1/1) ... [2023-11-23 20:33:31,010 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:30" (1/1) ... [2023-11-23 20:33:31,033 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:30" (1/1) ... [2023-11-23 20:33:31,033 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:30" (1/1) ... [2023-11-23 20:33:31,145 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:30" (1/1) ... [2023-11-23 20:33:31,196 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:30" (1/1) ... [2023-11-23 20:33:31,235 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:30" (1/1) ... [2023-11-23 20:33:31,263 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:30" (1/1) ... [2023-11-23 20:33:31,301 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:33:31,302 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:33:31,303 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:33:31,303 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:33:31,304 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:30" (1/1) ... [2023-11-23 20:33:31,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:33:31,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06810c3f-a638-40b5-ae9b-0c53c3669e74/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:33:31,343 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06810c3f-a638-40b5-ae9b-0c53c3669e74/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:33:31,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06810c3f-a638-40b5-ae9b-0c53c3669e74/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:33:31,395 INFO L130 BoogieDeclarations]: Found specification of procedure vasprintf [2023-11-23 20:33:31,395 INFO L138 BoogieDeclarations]: Found implementation of procedure vasprintf [2023-11-23 20:33:31,395 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-23 20:33:31,396 INFO L130 BoogieDeclarations]: Found specification of procedure du [2023-11-23 20:33:31,398 INFO L138 BoogieDeclarations]: Found implementation of procedure du [2023-11-23 20:33:31,398 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-23 20:33:31,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:33:31,400 INFO L130 BoogieDeclarations]: Found specification of procedure xzalloc [2023-11-23 20:33:31,400 INFO L138 BoogieDeclarations]: Found implementation of procedure xzalloc [2023-11-23 20:33:31,400 INFO L130 BoogieDeclarations]: Found specification of procedure print [2023-11-23 20:33:31,400 INFO L138 BoogieDeclarations]: Found implementation of procedure print [2023-11-23 20:33:31,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 20:33:31,400 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-23 20:33:31,401 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-23 20:33:31,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 20:33:31,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:33:31,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 20:33:31,403 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-23 20:33:31,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:33:31,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 20:33:31,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:33:31,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:33:31,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-23 20:33:31,406 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-23 20:33:31,406 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-23 20:33:31,407 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-23 20:33:31,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 20:33:31,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 20:33:31,408 INFO L130 BoogieDeclarations]: Found specification of procedure bb_simple_perror_msg [2023-11-23 20:33:31,408 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_simple_perror_msg [2023-11-23 20:33:31,408 INFO L130 BoogieDeclarations]: Found specification of procedure stat [2023-11-23 20:33:31,408 INFO L138 BoogieDeclarations]: Found implementation of procedure stat [2023-11-23 20:33:31,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 20:33:31,408 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 20:33:31,409 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 20:33:31,409 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 20:33:31,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:33:31,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 20:33:31,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 20:33:31,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:33:31,410 INFO L130 BoogieDeclarations]: Found specification of procedure bb_perror_msg [2023-11-23 20:33:31,410 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_perror_msg [2023-11-23 20:33:31,410 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-23 20:33:31,410 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-23 20:33:31,410 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-23 20:33:31,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:33:32,037 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:33:32,040 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:33:35,010 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:33:36,076 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:33:36,077 INFO L309 CfgBuilder]: Removed 34 assume(true) statements. [2023-11-23 20:33:36,079 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:33:36 BoogieIcfgContainer [2023-11-23 20:33:36,080 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:33:36,083 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:33:36,084 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:33:36,087 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:33:36,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:33:27" (1/3) ... [2023-11-23 20:33:36,091 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431ddc3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:33:36, skipping insertion in model container [2023-11-23 20:33:36,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:30" (2/3) ... [2023-11-23 20:33:36,092 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431ddc3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:33:36, skipping insertion in model container [2023-11-23 20:33:36,092 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:33:36" (3/3) ... [2023-11-23 20:33:36,100 INFO L112 eAbstractionObserver]: Analyzing ICFG du-2.i [2023-11-23 20:33:36,125 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:33:36,125 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 76 error locations. [2023-11-23 20:33:36,221 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:33:36,231 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;@1d326e57, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:33:36,231 INFO L358 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2023-11-23 20:33:36,242 INFO L276 IsEmpty]: Start isEmpty. Operand has 508 states, 375 states have (on average 1.6666666666666667) internal successors, (625), 453 states have internal predecessors, (625), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-11-23 20:33:36,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-23 20:33:36,257 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:33:36,259 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-23 20:33:36,260 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-23 20:33:36,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:33:36,270 INFO L85 PathProgramCache]: Analyzing trace with hash 2205022, now seen corresponding path program 1 times [2023-11-23 20:33:36,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:33:36,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112550189] [2023-11-23 20:33:36,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:36,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:33:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:36,918 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 20:33:36,919 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:33:36,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112550189] [2023-11-23 20:33:36,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112550189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:33:36,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:33:36,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 20:33:36,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317719799] [2023-11-23 20:33:36,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:33:36,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:33:36,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:33:36,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:33:36,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:33:36,992 INFO L87 Difference]: Start difference. First operand has 508 states, 375 states have (on average 1.6666666666666667) internal successors, (625), 453 states have internal predecessors, (625), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:33:38,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:33:38,561 INFO L93 Difference]: Finished difference Result 1009 states and 1440 transitions. [2023-11-23 20:33:38,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:33:38,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-23 20:33:38,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:33:38,601 INFO L225 Difference]: With dead ends: 1009 [2023-11-23 20:33:38,601 INFO L226 Difference]: Without dead ends: 503 [2023-11-23 20:33:38,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:33:38,627 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 1 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-23 20:33:38,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1160 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-23 20:33:38,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2023-11-23 20:33:38,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 503. [2023-11-23 20:33:38,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 372 states have (on average 1.5940860215053763) internal successors, (593), 454 states have internal predecessors, (593), 43 states have call successors, (43), 13 states have call predecessors, (43), 12 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-23 20:33:38,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 673 transitions. [2023-11-23 20:33:38,800 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 673 transitions. Word has length 3 [2023-11-23 20:33:38,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:33:38,801 INFO L495 AbstractCegarLoop]: Abstraction has 503 states and 673 transitions. [2023-11-23 20:33:38,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:33:38,804 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 673 transitions. [2023-11-23 20:33:38,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 20:33:38,805 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:33:38,805 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-23 20:33:38,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:33:38,806 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-23 20:33:38,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:33:38,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1266125988, now seen corresponding path program 1 times [2023-11-23 20:33:38,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:33:38,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405301327] [2023-11-23 20:33:38,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:38,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:33:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:39,138 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 20:33:39,139 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:33:39,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405301327] [2023-11-23 20:33:39,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405301327] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:33:39,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039976217] [2023-11-23 20:33:39,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:39,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:33:39,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06810c3f-a638-40b5-ae9b-0c53c3669e74/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:33:39,144 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06810c3f-a638-40b5-ae9b-0c53c3669e74/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:33:39,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06810c3f-a638-40b5-ae9b-0c53c3669e74/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 20:33:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:39,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 20:33:39,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:33:39,711 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 20:33:39,711 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:33:39,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039976217] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:33:39,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 20:33:39,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-23 20:33:39,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607634271] [2023-11-23 20:33:39,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:33:39,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:33:39,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:33:39,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:33:39,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:33:39,716 INFO L87 Difference]: Start difference. First operand 503 states and 673 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:33:41,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:33:41,393 INFO L93 Difference]: Finished difference Result 503 states and 673 transitions. [2023-11-23 20:33:41,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:33:41,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-23 20:33:41,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:33:41,403 INFO L225 Difference]: With dead ends: 503 [2023-11-23 20:33:41,404 INFO L226 Difference]: Without dead ends: 502 [2023-11-23 20:33:41,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 20:33:41,407 INFO L413 NwaCegarLoop]: 578 mSDtfsCounter, 2 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1734 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-23 20:33:41,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1734 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-23 20:33:41,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2023-11-23 20:33:41,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 502. [2023-11-23 20:33:41,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 372 states have (on average 1.5913978494623655) internal successors, (592), 453 states have internal predecessors, (592), 43 states have call successors, (43), 13 states have call predecessors, (43), 12 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-23 20:33:41,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 672 transitions. [2023-11-23 20:33:41,482 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 672 transitions. Word has length 6 [2023-11-23 20:33:41,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:33:41,483 INFO L495 AbstractCegarLoop]: Abstraction has 502 states and 672 transitions. [2023-11-23 20:33:41,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:33:41,484 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 672 transitions. [2023-11-23 20:33:41,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 20:33:41,485 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:33:41,485 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-23 20:33:41,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06810c3f-a638-40b5-ae9b-0c53c3669e74/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 20:33:41,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06810c3f-a638-40b5-ae9b-0c53c3669e74/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:33:41,701 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-23 20:33:41,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:33:41,701 INFO L85 PathProgramCache]: Analyzing trace with hash 595200795, now seen corresponding path program 1 times [2023-11-23 20:33:41,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:33:41,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902495750] [2023-11-23 20:33:41,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:41,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:33:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:41,930 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 20:33:41,930 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:33:41,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902495750] [2023-11-23 20:33:41,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902495750] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:33:41,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:33:41,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:33:41,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98098729] [2023-11-23 20:33:41,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:33:41,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:33:41,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:33:41,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:33:41,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:33:41,936 INFO L87 Difference]: Start difference. First operand 502 states and 672 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 20:33:43,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:33:43,005 INFO L93 Difference]: Finished difference Result 502 states and 672 transitions. [2023-11-23 20:33:43,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:33:43,008 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 20:33:43,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:33:43,013 INFO L225 Difference]: With dead ends: 502 [2023-11-23 20:33:43,013 INFO L226 Difference]: Without dead ends: 501 [2023-11-23 20:33:43,014 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 20:33:43,015 INFO L413 NwaCegarLoop]: 578 mSDtfsCounter, 0 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:33:43,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1156 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 20:33:43,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2023-11-23 20:33:43,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 499. [2023-11-23 20:33:43,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 370 states have (on average 1.5918918918918918) internal successors, (589), 450 states have internal predecessors, (589), 43 states have call successors, (43), 13 states have call predecessors, (43), 12 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-23 20:33:43,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 669 transitions. [2023-11-23 20:33:43,054 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 669 transitions. Word has length 7 [2023-11-23 20:33:43,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:33:43,055 INFO L495 AbstractCegarLoop]: Abstraction has 499 states and 669 transitions. [2023-11-23 20:33:43,055 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 20:33:43,055 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 669 transitions. [2023-11-23 20:33:43,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 20:33:43,056 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:33:43,056 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:33:43,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 20:33:43,057 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-23 20:33:43,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:33:43,059 INFO L85 PathProgramCache]: Analyzing trace with hash -2089196741, now seen corresponding path program 1 times [2023-11-23 20:33:43,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:33:43,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820452405] [2023-11-23 20:33:43,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:43,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:33:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:43,327 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 20:33:43,327 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:33:43,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820452405] [2023-11-23 20:33:43,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820452405] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:33:43,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010740500] [2023-11-23 20:33:43,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:43,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:33:43,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06810c3f-a638-40b5-ae9b-0c53c3669e74/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:33:43,331 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06810c3f-a638-40b5-ae9b-0c53c3669e74/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:33:43,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06810c3f-a638-40b5-ae9b-0c53c3669e74/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 20:33:43,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:43,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 20:33:43,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:33:43,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 20:33:43,813 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:33:43,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010740500] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:33:43,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 20:33:43,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-23 20:33:43,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586064514] [2023-11-23 20:33:43,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:33:43,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:33:43,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:33:43,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:33:43,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:33:43,817 INFO L87 Difference]: Start difference. First operand 499 states and 669 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 20:33:44,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:33:44,539 INFO L93 Difference]: Finished difference Result 499 states and 669 transitions. [2023-11-23 20:33:44,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:33:44,542 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-11-23 20:33:44,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:33:44,546 INFO L225 Difference]: With dead ends: 499 [2023-11-23 20:33:44,546 INFO L226 Difference]: Without dead ends: 497 [2023-11-23 20:33:44,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:33:44,550 INFO L413 NwaCegarLoop]: 571 mSDtfsCounter, 309 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 20:33:44,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 877 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 20:33:44,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2023-11-23 20:33:44,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 497. [2023-11-23 20:33:44,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 370 states have (on average 1.5864864864864865) internal successors, (587), 448 states have internal predecessors, (587), 43 states have call successors, (43), 13 states have call predecessors, (43), 12 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-23 20:33:44,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 667 transitions. [2023-11-23 20:33:44,586 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 667 transitions. Word has length 9 [2023-11-23 20:33:44,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:33:44,587 INFO L495 AbstractCegarLoop]: Abstraction has 497 states and 667 transitions. [2023-11-23 20:33:44,588 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 20:33:44,588 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 667 transitions. [2023-11-23 20:33:44,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-23 20:33:44,589 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:33:44,589 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:33:44,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06810c3f-a638-40b5-ae9b-0c53c3669e74/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 20:33:44,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06810c3f-a638-40b5-ae9b-0c53c3669e74/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:33:44,814 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-23 20:33:44,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:33:44,814 INFO L85 PathProgramCache]: Analyzing trace with hash -340588691, now seen corresponding path program 1 times [2023-11-23 20:33:44,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:33:44,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392260295] [2023-11-23 20:33:44,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:44,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:33:44,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:45,069 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 20:33:45,070 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:33:45,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392260295] [2023-11-23 20:33:45,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392260295] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:33:45,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513162577] [2023-11-23 20:33:45,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:45,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:33:45,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06810c3f-a638-40b5-ae9b-0c53c3669e74/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:33:45,073 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06810c3f-a638-40b5-ae9b-0c53c3669e74/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:33:45,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06810c3f-a638-40b5-ae9b-0c53c3669e74/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 20:33:45,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:45,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 20:33:45,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:33:45,538 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 20:33:45,538 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:33:45,574 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 20:33:45,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513162577] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:33:45,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [378104029] [2023-11-23 20:33:45,603 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-23 20:33:45,604 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:33:45,608 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:33:45,615 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:33:45,616 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 20:34:00,087 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 142 for LOIs [2023-11-23 20:34:00,150 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 20:34:02,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [378104029] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:34:02,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-23 20:34:02,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 3, 4] total 14 [2023-11-23 20:34:02,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957479342] [2023-11-23 20:34:02,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:34:02,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 20:34:02,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:34:02,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 20:34:02,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-23 20:34:02,865 INFO L87 Difference]: Start difference. First operand 497 states and 667 transitions. Second operand has 9 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 20:34:07,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 20:34:10,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:34:10,792 INFO L93 Difference]: Finished difference Result 499 states and 668 transitions. [2023-11-23 20:34:10,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 20:34:10,792 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-11-23 20:34:10,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:34:10,796 INFO L225 Difference]: With dead ends: 499 [2023-11-23 20:34:10,797 INFO L226 Difference]: Without dead ends: 497 [2023-11-23 20:34:10,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-23 20:34:10,798 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 3 mSDsluCounter, 2239 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2808 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-11-23 20:34:10,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2808 Invalid, 1162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1160 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-11-23 20:34:10,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2023-11-23 20:34:10,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 497. [2023-11-23 20:34:10,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 371 states have (on average 1.5795148247978437) internal successors, (586), 447 states have internal predecessors, (586), 43 states have call successors, (43), 14 states have call predecessors, (43), 13 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-23 20:34:10,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 666 transitions. [2023-11-23 20:34:10,826 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 666 transitions. Word has length 10 [2023-11-23 20:34:10,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:34:10,827 INFO L495 AbstractCegarLoop]: Abstraction has 497 states and 666 transitions. [2023-11-23 20:34:10,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 20:34:10,827 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 666 transitions. [2023-11-23 20:34:10,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 20:34:10,828 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:34:10,828 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:34:10,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06810c3f-a638-40b5-ae9b-0c53c3669e74/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 20:34:11,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06810c3f-a638-40b5-ae9b-0c53c3669e74/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:34:11,039 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-23 20:34:11,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:34:11,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1207971671, now seen corresponding path program 1 times [2023-11-23 20:34:11,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:34:11,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760605202] [2023-11-23 20:34:11,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:11,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:34:11,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:34:11,235 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 20:34:11,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:34:11,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760605202] [2023-11-23 20:34:11,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760605202] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:34:11,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529633152] [2023-11-23 20:34:11,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:11,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:34:11,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06810c3f-a638-40b5-ae9b-0c53c3669e74/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:34:11,237 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06810c3f-a638-40b5-ae9b-0c53c3669e74/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:34:11,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06810c3f-a638-40b5-ae9b-0c53c3669e74/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process