./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/mkdir-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a 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_44ec9889-07fe-4bc5-bb38-f56c612b2016/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ec9889-07fe-4bc5-bb38-f56c612b2016/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ec9889-07fe-4bc5-bb38-f56c612b2016/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ec9889-07fe-4bc5-bb38-f56c612b2016/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/mkdir-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ec9889-07fe-4bc5-bb38-f56c612b2016/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ec9889-07fe-4bc5-bb38-f56c612b2016/bin/utaipan-verify-DbMuA5NWw2 --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 5850608342e71c73a2884a3b8842eef7b76900542057309a801f65a1038c0448 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:32:06,318 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:32:06,397 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ec9889-07fe-4bc5-bb38-f56c612b2016/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Overflow-64bit-Taipan_Default.epf [2024-11-02 12:32:06,402 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:32:06,403 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:32:06,427 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:32:06,430 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:32:06,430 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:32:06,431 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:32:06,431 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:32:06,431 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:32:06,433 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:32:06,433 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:32:06,435 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:32:06,436 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:32:06,436 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:32:06,437 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:32:06,437 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:32:06,437 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:32:06,437 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:32:06,438 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:32:06,442 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:32:06,443 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:32:06,443 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:32:06,443 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:32:06,444 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:32:06,444 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:32:06,444 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:32:06,445 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:32:06,445 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:32:06,445 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-02 12:32:06,445 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 12:32:06,446 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:32:06,446 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:32:06,446 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:32:06,447 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:32:06,447 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:32:06,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:32:06,448 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:32:06,448 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:32:06,448 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:32:06,449 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:32:06,449 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:32:06,449 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:32:06,450 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:32:06,450 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:32:06,450 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_44ec9889-07fe-4bc5-bb38-f56c612b2016/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ec9889-07fe-4bc5-bb38-f56c612b2016/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5850608342e71c73a2884a3b8842eef7b76900542057309a801f65a1038c0448 [2024-11-02 12:32:06,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:32:06,797 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:32:06,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:32:06,801 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:32:06,803 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:32:06,804 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ec9889-07fe-4bc5-bb38-f56c612b2016/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/busybox-1.22.0/mkdir-1.i Unable to find full path for "g++" [2024-11-02 12:32:09,183 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:32:09,773 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:32:09,775 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ec9889-07fe-4bc5-bb38-f56c612b2016/sv-benchmarks/c/busybox-1.22.0/mkdir-1.i [2024-11-02 12:32:09,817 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ec9889-07fe-4bc5-bb38-f56c612b2016/bin/utaipan-verify-DbMuA5NWw2/data/bbacfb34a/04391b762e06479496d0671183080574/FLAG22188f1c6 [2024-11-02 12:32:09,842 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ec9889-07fe-4bc5-bb38-f56c612b2016/bin/utaipan-verify-DbMuA5NWw2/data/bbacfb34a/04391b762e06479496d0671183080574 [2024-11-02 12:32:09,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:32:09,848 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:32:09,849 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:32:09,851 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:32:09,857 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:32:09,858 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:32:09" (1/1) ... [2024-11-02 12:32:09,859 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f42cae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:09, skipping insertion in model container [2024-11-02 12:32:09,862 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:32:09" (1/1) ... [2024-11-02 12:32:09,960 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:32:12,003 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:32:12,053 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:32:12,320 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:32:12,612 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:32:12,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:12 WrapperNode [2024-11-02 12:32:12,615 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:32:12,616 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:32:12,616 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:32:12,616 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:32:12,624 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:12" (1/1) ... [2024-11-02 12:32:12,729 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:12" (1/1) ... [2024-11-02 12:32:12,859 INFO L138 Inliner]: procedures = 639, calls = 861, calls flagged for inlining = 27, calls inlined = 26, statements flattened = 2631 [2024-11-02 12:32:12,859 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:32:12,860 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:32:12,861 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:32:12,861 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:32:12,871 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:12" (1/1) ... [2024-11-02 12:32:12,872 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:12" (1/1) ... [2024-11-02 12:32:12,903 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:12" (1/1) ... [2024-11-02 12:32:12,905 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:12" (1/1) ... [2024-11-02 12:32:12,977 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:12" (1/1) ... [2024-11-02 12:32:13,001 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:12" (1/1) ... [2024-11-02 12:32:13,023 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:12" (1/1) ... [2024-11-02 12:32:13,037 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:12" (1/1) ... [2024-11-02 12:32:13,059 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:32:13,062 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:32:13,063 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:32:13,063 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:32:13,064 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:12" (1/1) ... [2024-11-02 12:32:13,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:32:13,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ec9889-07fe-4bc5-bb38-f56c612b2016/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:32:13,099 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ec9889-07fe-4bc5-bb38-f56c612b2016/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:32:13,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ec9889-07fe-4bc5-bb38-f56c612b2016/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:32:13,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 12:32:13,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2024-11-02 12:32:13,134 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2024-11-02 12:32:13,134 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2024-11-02 12:32:13,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-02 12:32:13,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 12:32:13,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-02 12:32:13,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:32:13,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-02 12:32:13,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:32:13,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:32:13,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2024-11-02 12:32:13,138 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2024-11-02 12:32:13,138 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2024-11-02 12:32:13,138 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2024-11-02 12:32:13,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2024-11-02 12:32:13,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-02 12:32:13,138 INFO L130 BoogieDeclarations]: Found specification of procedure umask [2024-11-02 12:32:13,139 INFO L138 BoogieDeclarations]: Found implementation of procedure umask [2024-11-02 12:32:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure stat [2024-11-02 12:32:13,139 INFO L138 BoogieDeclarations]: Found implementation of procedure stat [2024-11-02 12:32:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-11-02 12:32:13,139 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-11-02 12:32:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 12:32:13,139 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 12:32:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-02 12:32:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-02 12:32:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-02 12:32:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure bb_show_usage [2024-11-02 12:32:13,140 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_show_usage [2024-11-02 12:32:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 12:32:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2024-11-02 12:32:13,140 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2024-11-02 12:32:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:32:13,696 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:32:13,699 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:32:20,083 INFO L? ?]: Removed 747 outVars from TransFormulas that were not future-live. [2024-11-02 12:32:20,083 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:32:21,167 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:32:21,171 INFO L316 CfgBuilder]: Removed 37 assume(true) statements. [2024-11-02 12:32:21,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:32:21 BoogieIcfgContainer [2024-11-02 12:32:21,171 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:32:21,174 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:32:21,177 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:32:21,181 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:32:21,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:32:09" (1/3) ... [2024-11-02 12:32:21,182 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@634d7e61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:32:21, skipping insertion in model container [2024-11-02 12:32:21,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:32:12" (2/3) ... [2024-11-02 12:32:21,183 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@634d7e61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:32:21, skipping insertion in model container [2024-11-02 12:32:21,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:32:21" (3/3) ... [2024-11-02 12:32:21,184 INFO L112 eAbstractionObserver]: Analyzing ICFG mkdir-1.i [2024-11-02 12:32:21,205 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:32:21,205 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 73 error locations. [2024-11-02 12:32:21,283 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:32:21,291 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@492cb9b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:32:21,291 INFO L334 AbstractCegarLoop]: Starting to check reachability of 73 error locations. [2024-11-02 12:32:21,298 INFO L276 IsEmpty]: Start isEmpty. Operand has 478 states, 362 states have (on average 1.7044198895027625) internal successors, (617), 440 states have internal predecessors, (617), 33 states have call successors, (33), 9 states have call predecessors, (33), 9 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-02 12:32:21,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-02 12:32:21,306 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:32:21,306 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-02 12:32:21,307 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 70 more)] === [2024-11-02 12:32:21,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:32:21,313 INFO L85 PathProgramCache]: Analyzing trace with hash 2251934, now seen corresponding path program 1 times [2024-11-02 12:32:21,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:32:21,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720406254] [2024-11-02 12:32:21,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:32:21,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:32:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:32:23,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:32:23,305 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:32:23,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720406254] [2024-11-02 12:32:23,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720406254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:32:23,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:32:23,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-02 12:32:23,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732067737] [2024-11-02 12:32:23,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:32:23,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:32:23,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:32:23,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:32:23,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:32:23,355 INFO L87 Difference]: Start difference. First operand has 478 states, 362 states have (on average 1.7044198895027625) internal successors, (617), 440 states have internal predecessors, (617), 33 states have call successors, (33), 9 states have call predecessors, (33), 9 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) 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) [2024-11-02 12:32:25,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:32:26,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:32:26,251 INFO L93 Difference]: Finished difference Result 937 states and 1354 transitions. [2024-11-02 12:32:26,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:32:26,257 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 [2024-11-02 12:32:26,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:32:26,279 INFO L225 Difference]: With dead ends: 937 [2024-11-02 12:32:26,279 INFO L226 Difference]: Without dead ends: 461 [2024-11-02 12:32:26,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:32:26,295 INFO L432 NwaCegarLoop]: 542 mSDtfsCounter, 1 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-02 12:32:26,298 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1082 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 154 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2024-11-02 12:32:26,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2024-11-02 12:32:26,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 461. [2024-11-02 12:32:26,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 352 states have (on average 1.5965909090909092) internal successors, (562), 428 states have internal predecessors, (562), 32 states have call successors, (32), 9 states have call predecessors, (32), 8 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-02 12:32:26,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 620 transitions. [2024-11-02 12:32:26,406 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 620 transitions. Word has length 3 [2024-11-02 12:32:26,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:32:26,406 INFO L471 AbstractCegarLoop]: Abstraction has 461 states and 620 transitions. [2024-11-02 12:32:26,407 INFO L472 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) [2024-11-02 12:32:26,407 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 620 transitions. [2024-11-02 12:32:26,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-02 12:32:26,409 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:32:26,410 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2024-11-02 12:32:26,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:32:26,411 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 70 more)] === [2024-11-02 12:32:26,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:32:26,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1631738724, now seen corresponding path program 1 times [2024-11-02 12:32:26,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:32:26,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413216690] [2024-11-02 12:32:26,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:32:26,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:32:27,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:32:27,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:32:27,793 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:32:27,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413216690] [2024-11-02 12:32:27,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413216690] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:32:27,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332230257] [2024-11-02 12:32:27,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:32:27,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:32:27,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ec9889-07fe-4bc5-bb38-f56c612b2016/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:32:27,797 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ec9889-07fe-4bc5-bb38-f56c612b2016/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:32:27,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ec9889-07fe-4bc5-bb38-f56c612b2016/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:32:29,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:32:29,360 INFO L255 TraceCheckSpWp]: Trace formula consists of 1503 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 12:32:29,367 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:32:29,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:32:29,423 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:32:29,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332230257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:32:29,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 12:32:29,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2024-11-02 12:32:29,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487512632] [2024-11-02 12:32:29,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:32:29,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:32:29,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:32:29,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:32:29,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:32:29,429 INFO L87 Difference]: Start difference. First operand 461 states and 620 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) [2024-11-02 12:32:31,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:32:33,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:32:34,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:32:34,198 INFO L93 Difference]: Finished difference Result 461 states and 620 transitions. [2024-11-02 12:32:34,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:32:34,199 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 [2024-11-02 12:32:34,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:32:34,202 INFO L225 Difference]: With dead ends: 461 [2024-11-02 12:32:34,202 INFO L226 Difference]: Without dead ends: 460 [2024-11-02 12:32:34,203 INFO L431 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 [2024-11-02 12:32:34,204 INFO L432 NwaCegarLoop]: 539 mSDtfsCounter, 1 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-02 12:32:34,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1078 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 154 Invalid, 2 Unknown, 0 Unchecked, 4.7s Time] [2024-11-02 12:32:34,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2024-11-02 12:32:34,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 460. [2024-11-02 12:32:34,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 352 states have (on average 1.59375) internal successors, (561), 427 states have internal predecessors, (561), 32 states have call successors, (32), 9 states have call predecessors, (32), 8 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-02 12:32:34,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 619 transitions. [2024-11-02 12:32:34,229 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 619 transitions. Word has length 6 [2024-11-02 12:32:34,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:32:34,229 INFO L471 AbstractCegarLoop]: Abstraction has 460 states and 619 transitions. [2024-11-02 12:32:34,229 INFO L472 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) [2024-11-02 12:32:34,230 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 619 transitions. [2024-11-02 12:32:34,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-02 12:32:34,230 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:32:34,231 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2024-11-02 12:32:34,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ec9889-07fe-4bc5-bb38-f56c612b2016/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-02 12:32:34,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ec9889-07fe-4bc5-bb38-f56c612b2016/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-02 12:32:34,435 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 70 more)] === [2024-11-02 12:32:34,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:32:34,441 INFO L85 PathProgramCache]: Analyzing trace with hash 955707483, now seen corresponding path program 1 times [2024-11-02 12:32:34,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:32:34,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873288843] [2024-11-02 12:32:34,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:32:34,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:32:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:32:35,548 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 12:32:35,548 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:32:35,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873288843] [2024-11-02 12:32:35,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873288843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:32:35,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:32:35,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:32:35,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084247893] [2024-11-02 12:32:35,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:32:35,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:32:35,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:32:35,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:32:35,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:32:35,551 INFO L87 Difference]: Start difference. First operand 460 states and 619 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:32:37,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:32:38,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:32:38,274 INFO L93 Difference]: Finished difference Result 460 states and 619 transitions. [2024-11-02 12:32:38,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:32:38,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-02 12:32:38,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:32:38,284 INFO L225 Difference]: With dead ends: 460 [2024-11-02 12:32:38,285 INFO L226 Difference]: Without dead ends: 459 [2024-11-02 12:32:38,285 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:32:38,286 INFO L432 NwaCegarLoop]: 539 mSDtfsCounter, 0 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-02 12:32:38,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1078 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 148 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2024-11-02 12:32:38,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2024-11-02 12:32:38,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 457. [2024-11-02 12:32:38,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 350 states have (on average 1.5942857142857143) internal successors, (558), 424 states have internal predecessors, (558), 32 states have call successors, (32), 9 states have call predecessors, (32), 8 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-02 12:32:38,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 616 transitions. [2024-11-02 12:32:38,327 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 616 transitions. Word has length 7 [2024-11-02 12:32:38,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:32:38,331 INFO L471 AbstractCegarLoop]: Abstraction has 457 states and 616 transitions. [2024-11-02 12:32:38,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:32:38,331 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 616 transitions. [2024-11-02 12:32:38,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-02 12:32:38,332 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:32:38,332 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:32:38,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:32:38,332 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 70 more)] === [2024-11-02 12:32:38,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:32:38,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1435102211, now seen corresponding path program 1 times [2024-11-02 12:32:38,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:32:38,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33581808] [2024-11-02 12:32:38,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:32:38,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:32:39,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:32:39,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:32:39,585 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:32:39,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33581808] [2024-11-02 12:32:39,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33581808] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:32:39,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730285540] [2024-11-02 12:32:39,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:32:39,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:32:39,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ec9889-07fe-4bc5-bb38-f56c612b2016/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:32:39,590 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ec9889-07fe-4bc5-bb38-f56c612b2016/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:32:39,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ec9889-07fe-4bc5-bb38-f56c612b2016/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process