./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/rm-3.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_771e2f88-27c0-4d0b-a3e8-d5abefa5327b/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771e2f88-27c0-4d0b-a3e8-d5abefa5327b/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_771e2f88-27c0-4d0b-a3e8-d5abefa5327b/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771e2f88-27c0-4d0b-a3e8-d5abefa5327b/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/rm-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771e2f88-27c0-4d0b-a3e8-d5abefa5327b/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_771e2f88-27c0-4d0b-a3e8-d5abefa5327b/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 b7cd26eb27ab4e978803b1d424a6b63836c3023296c12ecba793e7e4f9988ff0 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:31:34,384 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:31:34,479 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771e2f88-27c0-4d0b-a3e8-d5abefa5327b/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Overflow-64bit-Taipan_Default.epf [2024-11-02 12:31:34,483 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:31:34,488 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:31:34,529 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:31:34,530 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:31:34,530 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:31:34,533 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:31:34,534 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:31:34,534 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:31:34,535 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:31:34,535 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:31:34,535 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:31:34,536 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:31:34,536 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:31:34,536 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:31:34,539 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:31:34,540 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:31:34,540 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:31:34,541 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:31:34,541 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:31:34,542 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:31:34,542 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:31:34,542 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:31:34,543 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:31:34,543 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:31:34,543 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:31:34,544 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:31:34,544 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:31:34,544 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-02 12:31:34,545 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 12:31:34,545 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:31:34,545 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:31:34,548 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:31:34,548 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:31:34,548 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:31:34,549 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:31:34,549 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:31:34,549 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:31:34,550 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:31:34,551 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:31:34,551 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:31:34,551 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:31:34,551 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:31:34,552 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:31:34,552 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_771e2f88-27c0-4d0b-a3e8-d5abefa5327b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771e2f88-27c0-4d0b-a3e8-d5abefa5327b/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7cd26eb27ab4e978803b1d424a6b63836c3023296c12ecba793e7e4f9988ff0 [2024-11-02 12:31:34,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:31:34,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:31:34,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:31:34,866 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:31:34,868 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:31:34,869 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771e2f88-27c0-4d0b-a3e8-d5abefa5327b/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/busybox-1.22.0/rm-3.i Unable to find full path for "g++" [2024-11-02 12:31:36,866 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:31:37,369 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:31:37,371 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771e2f88-27c0-4d0b-a3e8-d5abefa5327b/sv-benchmarks/c/busybox-1.22.0/rm-3.i [2024-11-02 12:31:37,415 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771e2f88-27c0-4d0b-a3e8-d5abefa5327b/bin/utaipan-verify-DbMuA5NWw2/data/223376a74/ec006ee75bc449389f565ddbe5fd56dd/FLAGd8e599736 [2024-11-02 12:31:37,438 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771e2f88-27c0-4d0b-a3e8-d5abefa5327b/bin/utaipan-verify-DbMuA5NWw2/data/223376a74/ec006ee75bc449389f565ddbe5fd56dd [2024-11-02 12:31:37,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:31:37,444 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:31:37,448 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:31:37,448 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:31:37,454 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:31:37,455 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:31:37" (1/1) ... [2024-11-02 12:31:37,456 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cd8c39b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:37, skipping insertion in model container [2024-11-02 12:31:37,457 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:31:37" (1/1) ... [2024-11-02 12:31:37,555 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:31:39,728 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:31:39,764 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:31:40,037 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:31:40,468 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:31:40,469 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:40 WrapperNode [2024-11-02 12:31:40,469 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:31:40,471 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:31:40,471 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:31:40,471 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:31:40,481 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:40" (1/1) ... [2024-11-02 12:31:40,576 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:40" (1/1) ... [2024-11-02 12:31:40,736 INFO L138 Inliner]: procedures = 661, calls = 1063, calls flagged for inlining = 29, calls inlined = 26, statements flattened = 2688 [2024-11-02 12:31:40,737 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:31:40,738 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:31:40,739 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:31:40,739 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:31:40,750 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:40" (1/1) ... [2024-11-02 12:31:40,751 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:40" (1/1) ... [2024-11-02 12:31:40,781 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:40" (1/1) ... [2024-11-02 12:31:40,781 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:40" (1/1) ... [2024-11-02 12:31:40,858 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:40" (1/1) ... [2024-11-02 12:31:40,886 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:40" (1/1) ... [2024-11-02 12:31:40,910 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:40" (1/1) ... [2024-11-02 12:31:40,930 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:40" (1/1) ... [2024-11-02 12:31:40,960 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:31:40,962 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:31:40,962 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:31:40,963 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:31:40,964 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:40" (1/1) ... [2024-11-02 12:31:40,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:31:40,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771e2f88-27c0-4d0b-a3e8-d5abefa5327b/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:31:41,002 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771e2f88-27c0-4d0b-a3e8-d5abefa5327b/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:31:41,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771e2f88-27c0-4d0b-a3e8-d5abefa5327b/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:31:41,038 INFO L130 BoogieDeclarations]: Found specification of procedure last_char_is [2024-11-02 12:31:41,039 INFO L138 BoogieDeclarations]: Found implementation of procedure last_char_is [2024-11-02 12:31:41,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 12:31:41,039 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2024-11-02 12:31:41,039 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2024-11-02 12:31:41,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-02 12:31:41,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 12:31:41,040 INFO L130 BoogieDeclarations]: Found specification of procedure bb_ask_confirmation [2024-11-02 12:31:41,042 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_ask_confirmation [2024-11-02 12:31:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-02 12:31:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:31:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-02 12:31:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:31:41,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:31:41,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2024-11-02 12:31:41,044 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2024-11-02 12:31:41,044 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2024-11-02 12:31:41,044 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2024-11-02 12:31:41,044 INFO L130 BoogieDeclarations]: Found specification of procedure remove_file [2024-11-02 12:31:41,045 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_file [2024-11-02 12:31:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure access [2024-11-02 12:31:41,045 INFO L138 BoogieDeclarations]: Found implementation of procedure access [2024-11-02 12:31:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-11-02 12:31:41,045 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-11-02 12:31:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 12:31:41,045 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 12:31:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-02 12:31:41,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-02 12:31:41,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-02 12:31:41,046 INFO L130 BoogieDeclarations]: Found specification of procedure bb_show_usage [2024-11-02 12:31:41,046 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_show_usage [2024-11-02 12:31:41,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 12:31:41,046 INFO L130 BoogieDeclarations]: Found specification of procedure bb_perror_msg [2024-11-02 12:31:41,046 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_perror_msg [2024-11-02 12:31:41,049 INFO L130 BoogieDeclarations]: Found specification of procedure isatty [2024-11-02 12:31:41,049 INFO L138 BoogieDeclarations]: Found implementation of procedure isatty [2024-11-02 12:31:41,049 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2024-11-02 12:31:41,049 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2024-11-02 12:31:41,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:31:41,049 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg [2024-11-02 12:31:41,050 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg [2024-11-02 12:31:41,760 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:31:41,763 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:31:45,066 INFO L? ?]: Removed 643 outVars from TransFormulas that were not future-live. [2024-11-02 12:31:45,066 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:31:46,076 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:31:46,076 INFO L316 CfgBuilder]: Removed 29 assume(true) statements. [2024-11-02 12:31:46,076 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:31:46 BoogieIcfgContainer [2024-11-02 12:31:46,077 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:31:46,080 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:31:46,080 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:31:46,084 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:31:46,085 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:31:37" (1/3) ... [2024-11-02 12:31:46,086 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@151e46b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:31:46, skipping insertion in model container [2024-11-02 12:31:46,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:40" (2/3) ... [2024-11-02 12:31:46,086 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@151e46b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:31:46, skipping insertion in model container [2024-11-02 12:31:46,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:31:46" (3/3) ... [2024-11-02 12:31:46,089 INFO L112 eAbstractionObserver]: Analyzing ICFG rm-3.i [2024-11-02 12:31:46,111 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:31:46,111 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2024-11-02 12:31:46,208 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:31:46,216 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;@2861def7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:31:46,216 INFO L334 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2024-11-02 12:31:46,225 INFO L276 IsEmpty]: Start isEmpty. Operand has 439 states, 334 states have (on average 1.6317365269461077) internal successors, (545), 383 states have internal predecessors, (545), 46 states have call successors, (46), 14 states have call predecessors, (46), 14 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-02 12:31:46,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-02 12:31:46,235 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:46,235 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-02 12:31:46,236 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [remove_fileErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, remove_fileErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, remove_fileErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-02 12:31:46,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:46,241 INFO L85 PathProgramCache]: Analyzing trace with hash 2074429, now seen corresponding path program 1 times [2024-11-02 12:31:46,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:46,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064537695] [2024-11-02 12:31:46,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:46,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:47,453 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 12:31:47,454 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:47,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064537695] [2024-11-02 12:31:47,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064537695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:47,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:31:47,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-02 12:31:47,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758422956] [2024-11-02 12:31:47,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:47,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:31:47,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:47,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:31:47,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:31:47,500 INFO L87 Difference]: Start difference. First operand has 439 states, 334 states have (on average 1.6317365269461077) internal successors, (545), 383 states have internal predecessors, (545), 46 states have call successors, (46), 14 states have call predecessors, (46), 14 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) 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 12:31:49,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:49,020 INFO L93 Difference]: Finished difference Result 873 states and 1276 transitions. [2024-11-02 12:31:49,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:31:49,024 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 12:31:49,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:49,052 INFO L225 Difference]: With dead ends: 873 [2024-11-02 12:31:49,053 INFO L226 Difference]: Without dead ends: 426 [2024-11-02 12:31:49,067 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 12:31:49,076 INFO L432 NwaCegarLoop]: 523 mSDtfsCounter, 1 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:49,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1044 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-02 12:31:49,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2024-11-02 12:31:49,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 426. [2024-11-02 12:31:49,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 329 states have (on average 1.5258358662613982) internal successors, (502), 375 states have internal predecessors, (502), 40 states have call successors, (40), 13 states have call predecessors, (40), 13 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-02 12:31:49,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 582 transitions. [2024-11-02 12:31:49,185 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 582 transitions. Word has length 3 [2024-11-02 12:31:49,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:49,187 INFO L471 AbstractCegarLoop]: Abstraction has 426 states and 582 transitions. [2024-11-02 12:31:49,187 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 12:31:49,188 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 582 transitions. [2024-11-02 12:31:49,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-02 12:31:49,189 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:49,190 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2024-11-02 12:31:49,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:31:49,190 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [remove_fileErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, remove_fileErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, remove_fileErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-02 12:31:49,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:49,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1670391670, now seen corresponding path program 1 times [2024-11-02 12:31:49,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:49,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482038893] [2024-11-02 12:31:49,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:49,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:49,960 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 12:31:49,961 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:49,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482038893] [2024-11-02 12:31:49,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482038893] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:31:49,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871408447] [2024-11-02 12:31:49,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:49,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:31:49,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771e2f88-27c0-4d0b-a3e8-d5abefa5327b/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:31:49,966 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771e2f88-27c0-4d0b-a3e8-d5abefa5327b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:31:49,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771e2f88-27c0-4d0b-a3e8-d5abefa5327b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:31:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:50,898 INFO L255 TraceCheckSpWp]: Trace formula consists of 1718 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 12:31:50,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:31:50,986 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 12:31:50,987 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:31:50,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871408447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:50,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 12:31:50,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2024-11-02 12:31:50,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394975623] [2024-11-02 12:31:50,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:50,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:31:50,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:50,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:31:50,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:31:50,998 INFO L87 Difference]: Start difference. First operand 426 states and 582 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 12:31:52,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:31:53,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:53,403 INFO L93 Difference]: Finished difference Result 426 states and 582 transitions. [2024-11-02 12:31:53,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:31:53,404 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 12:31:53,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:53,407 INFO L225 Difference]: With dead ends: 426 [2024-11-02 12:31:53,407 INFO L226 Difference]: Without dead ends: 425 [2024-11-02 12:31:53,408 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:31:53,409 INFO L432 NwaCegarLoop]: 500 mSDtfsCounter, 1 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:53,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1500 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-02 12:31:53,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2024-11-02 12:31:53,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2024-11-02 12:31:53,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 329 states have (on average 1.5227963525835866) internal successors, (501), 374 states have internal predecessors, (501), 40 states have call successors, (40), 13 states have call predecessors, (40), 13 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-02 12:31:53,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 581 transitions. [2024-11-02 12:31:53,439 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 581 transitions. Word has length 6 [2024-11-02 12:31:53,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:53,440 INFO L471 AbstractCegarLoop]: Abstraction has 425 states and 581 transitions. [2024-11-02 12:31:53,440 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 12:31:53,440 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 581 transitions. [2024-11-02 12:31:53,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-02 12:31:53,441 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:53,441 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2024-11-02 12:31:53,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771e2f88-27c0-4d0b-a3e8-d5abefa5327b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-02 12:31:53,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771e2f88-27c0-4d0b-a3e8-d5abefa5327b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-02 12:31:53,645 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [remove_fileErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, remove_fileErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, remove_fileErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-02 12:31:53,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:53,646 INFO L85 PathProgramCache]: Analyzing trace with hash 242534842, now seen corresponding path program 1 times [2024-11-02 12:31:53,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:53,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159899176] [2024-11-02 12:31:53,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:53,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:54,360 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 12:31:54,360 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:54,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159899176] [2024-11-02 12:31:54,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159899176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:54,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:31:54,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:31:54,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529915849] [2024-11-02 12:31:54,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:54,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:31:54,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:54,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:31:54,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:31:54,363 INFO L87 Difference]: Start difference. First operand 425 states and 581 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 12:31:55,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:31:55,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:55,788 INFO L93 Difference]: Finished difference Result 425 states and 581 transitions. [2024-11-02 12:31:55,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:31:55,788 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 12:31:55,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:55,791 INFO L225 Difference]: With dead ends: 425 [2024-11-02 12:31:55,792 INFO L226 Difference]: Without dead ends: 424 [2024-11-02 12:31:55,792 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 12:31:55,795 INFO L432 NwaCegarLoop]: 500 mSDtfsCounter, 0 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:55,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1000 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-02 12:31:55,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2024-11-02 12:31:55,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 422. [2024-11-02 12:31:55,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 327 states have (on average 1.5229357798165137) internal successors, (498), 371 states have internal predecessors, (498), 40 states have call successors, (40), 13 states have call predecessors, (40), 13 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-02 12:31:55,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 578 transitions. [2024-11-02 12:31:55,838 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 578 transitions. Word has length 7 [2024-11-02 12:31:55,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:55,838 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 578 transitions. [2024-11-02 12:31:55,839 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 12:31:55,839 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 578 transitions. [2024-11-02 12:31:55,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-02 12:31:55,839 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:55,839 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:31:55,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:31:55,843 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [remove_fileErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, remove_fileErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, remove_fileErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-02 12:31:55,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:55,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1668374422, now seen corresponding path program 1 times [2024-11-02 12:31:55,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:55,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65996902] [2024-11-02 12:31:55,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:55,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:56,565 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 12:31:56,566 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:56,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65996902] [2024-11-02 12:31:56,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65996902] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:31:56,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175208935] [2024-11-02 12:31:56,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:56,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:31:56,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771e2f88-27c0-4d0b-a3e8-d5abefa5327b/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:31:56,570 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771e2f88-27c0-4d0b-a3e8-d5abefa5327b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:31:56,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771e2f88-27c0-4d0b-a3e8-d5abefa5327b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 12:31:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:57,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 12:31:57,444 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:31:57,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 12:31:57,464 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:31:57,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175208935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:57,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 12:31:57,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-11-02 12:31:57,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476921402] [2024-11-02 12:31:57,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:57,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:31:57,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:57,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:31:57,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:31:57,468 INFO L87 Difference]: Start difference. First operand 422 states and 578 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) [2024-11-02 12:31:59,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:59,292 INFO L93 Difference]: Finished difference Result 422 states and 578 transitions. [2024-11-02 12:31:59,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:31:59,293 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 [2024-11-02 12:31:59,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:59,295 INFO L225 Difference]: With dead ends: 422 [2024-11-02 12:31:59,295 INFO L226 Difference]: Without dead ends: 420 [2024-11-02 12:31:59,296 INFO L431 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 [2024-11-02 12:31:59,297 INFO L432 NwaCegarLoop]: 493 mSDtfsCounter, 305 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:59,297 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 719 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-02 12:31:59,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2024-11-02 12:31:59,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 420. [2024-11-02 12:31:59,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 327 states have (on average 1.5168195718654434) internal successors, (496), 369 states have internal predecessors, (496), 40 states have call successors, (40), 13 states have call predecessors, (40), 13 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-02 12:31:59,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 576 transitions. [2024-11-02 12:31:59,329 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 576 transitions. Word has length 9 [2024-11-02 12:31:59,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:59,333 INFO L471 AbstractCegarLoop]: Abstraction has 420 states and 576 transitions. [2024-11-02 12:31:59,333 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), 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) [2024-11-02 12:31:59,334 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 576 transitions. [2024-11-02 12:31:59,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-02 12:31:59,334 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:59,334 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:31:59,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771e2f88-27c0-4d0b-a3e8-d5abefa5327b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-02 12:31:59,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771e2f88-27c0-4d0b-a3e8-d5abefa5327b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-02 12:31:59,535 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [remove_fileErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, remove_fileErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, remove_fileErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-02 12:31:59,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:59,535 INFO L85 PathProgramCache]: Analyzing trace with hash -179998897, now seen corresponding path program 1 times [2024-11-02 12:31:59,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:59,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357696615] [2024-11-02 12:31:59,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:59,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:59,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:32:00,102 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 12:32:00,103 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:32:00,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357696615] [2024-11-02 12:32:00,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357696615] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:32:00,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847379137] [2024-11-02 12:32:00,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:32:00,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:32:00,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771e2f88-27c0-4d0b-a3e8-d5abefa5327b/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:32:00,108 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771e2f88-27c0-4d0b-a3e8-d5abefa5327b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:32:00,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771e2f88-27c0-4d0b-a3e8-d5abefa5327b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-02 12:32:00,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:32:00,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 12:32:00,974 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:32:00,999 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 12:32:01,000 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:32:01,069 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 12:32:01,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847379137] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:32:01,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1106409870] [2024-11-02 12:32:01,116 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2024-11-02 12:32:01,116 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:32:01,125 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:32:01,135 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:32:01,136 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs