./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/date-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db7ce01-beb3-4abb-b3a4-662ac7788ebd/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db7ce01-beb3-4abb-b3a4-662ac7788ebd/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db7ce01-beb3-4abb-b3a4-662ac7788ebd/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db7ce01-beb3-4abb-b3a4-662ac7788ebd/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/date-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db7ce01-beb3-4abb-b3a4-662ac7788ebd/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db7ce01-beb3-4abb-b3a4-662ac7788ebd/bin/utaipan-verify-t7M7D8N6sZ --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 00770410f857790135d9cb8dfb3c2639990bbc39be0fdf770345e3e040bd542d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:14:56,433 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:14:56,544 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db7ce01-beb3-4abb-b3a4-662ac7788ebd/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-19 05:14:56,548 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:14:56,549 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:14:56,571 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:14:56,572 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:14:56,573 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:14:56,574 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:14:56,574 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:14:56,575 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:14:56,576 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:14:56,576 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:14:56,577 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:14:56,577 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:14:56,578 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:14:56,578 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:14:56,579 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:14:56,579 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:14:56,580 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:14:56,580 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:14:56,581 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:14:56,582 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:14:56,582 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:14:56,583 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:14:56,583 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:14:56,584 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:14:56,584 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:14:56,585 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:14:56,585 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:14:56,585 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:14:56,586 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:14:56,586 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:14:56,587 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:14:56,587 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:14:56,587 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:14:56,587 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:14:56,588 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:14:56,588 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:14:56,588 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:14:56,589 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:14:56,589 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:14:56,589 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:14:56,590 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:14:56,590 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_6db7ce01-beb3-4abb-b3a4-662ac7788ebd/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db7ce01-beb3-4abb-b3a4-662ac7788ebd/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00770410f857790135d9cb8dfb3c2639990bbc39be0fdf770345e3e040bd542d [2023-11-19 05:14:56,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:14:56,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:14:56,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:14:56,875 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:14:56,875 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:14:56,876 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db7ce01-beb3-4abb-b3a4-662ac7788ebd/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/busybox-1.22.0/date-2.i [2023-11-19 05:14:59,873 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:15:00,425 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:15:00,426 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db7ce01-beb3-4abb-b3a4-662ac7788ebd/sv-benchmarks/c/busybox-1.22.0/date-2.i [2023-11-19 05:15:00,474 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db7ce01-beb3-4abb-b3a4-662ac7788ebd/bin/utaipan-verify-t7M7D8N6sZ/data/c6cc58d6d/8ea4364dc36742b39d75c56f805637b4/FLAGf56739fcd [2023-11-19 05:15:00,490 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db7ce01-beb3-4abb-b3a4-662ac7788ebd/bin/utaipan-verify-t7M7D8N6sZ/data/c6cc58d6d/8ea4364dc36742b39d75c56f805637b4 [2023-11-19 05:15:00,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:15:00,494 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:15:00,495 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:15:00,495 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:15:00,501 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:15:00,501 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:15:00" (1/1) ... [2023-11-19 05:15:00,502 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f386be2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:00, skipping insertion in model container [2023-11-19 05:15:00,503 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:15:00" (1/1) ... [2023-11-19 05:15:00,600 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:15:02,604 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:15:02,716 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:15:03,033 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:15:03,311 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:15:03,312 WARN L675 CHandler]: The function localtime is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:15:03,312 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:15:03,312 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:15:03,312 WARN L675 CHandler]: The function strncmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:15:03,312 WARN L675 CHandler]: The function mktime is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:15:03,312 WARN L675 CHandler]: The function strftime is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:15:03,313 WARN L675 CHandler]: The function strspn is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:15:03,313 WARN L675 CHandler]: The function strrchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:15:03,313 WARN L675 CHandler]: The function strtoll is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:15:03,313 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:15:03,313 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:15:03,321 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:15:03,322 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:03 WrapperNode [2023-11-19 05:15:03,322 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:15:03,323 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:15:03,323 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:15:03,323 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:15:03,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:03" (1/1) ... [2023-11-19 05:15:03,423 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:03" (1/1) ... [2023-11-19 05:15:03,611 INFO L138 Inliner]: procedures = 649, calls = 918, calls flagged for inlining = 35, calls inlined = 34, statements flattened = 3042 [2023-11-19 05:15:03,611 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:15:03,612 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:15:03,612 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:15:03,612 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:15:03,622 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:03" (1/1) ... [2023-11-19 05:15:03,623 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:03" (1/1) ... [2023-11-19 05:15:03,647 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:03" (1/1) ... [2023-11-19 05:15:03,648 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:03" (1/1) ... [2023-11-19 05:15:03,727 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:03" (1/1) ... [2023-11-19 05:15:03,749 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:03" (1/1) ... [2023-11-19 05:15:03,777 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:03" (1/1) ... [2023-11-19 05:15:03,810 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:03" (1/1) ... [2023-11-19 05:15:03,840 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:15:03,842 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:15:03,842 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:15:03,842 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:15:03,843 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:03" (1/1) ... [2023-11-19 05:15:03,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:15:03,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db7ce01-beb3-4abb-b3a4-662ac7788ebd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:15:03,878 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db7ce01-beb3-4abb-b3a4-662ac7788ebd/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:15:03,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db7ce01-beb3-4abb-b3a4-662ac7788ebd/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:15:03,927 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2023-11-19 05:15:03,928 INFO L130 BoogieDeclarations]: Found specification of procedure localtime [2023-11-19 05:15:03,928 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-19 05:15:03,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:15:03,928 INFO L130 BoogieDeclarations]: Found specification of procedure strptime [2023-11-19 05:15:03,928 INFO L138 BoogieDeclarations]: Found implementation of procedure strptime [2023-11-19 05:15:03,929 INFO L130 BoogieDeclarations]: Found specification of procedure ret_ERANGE [2023-11-19 05:15:03,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ret_ERANGE [2023-11-19 05:15:03,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 05:15:03,930 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-19 05:15:03,930 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-19 05:15:03,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 05:15:03,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:15:03,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-19 05:15:03,931 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-19 05:15:03,932 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-11-19 05:15:03,932 INFO L130 BoogieDeclarations]: Found specification of procedure maybe_set_utc [2023-11-19 05:15:03,932 INFO L138 BoogieDeclarations]: Found implementation of procedure maybe_set_utc [2023-11-19 05:15:03,932 INFO L130 BoogieDeclarations]: Found specification of procedure mktime [2023-11-19 05:15:03,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:15:03,933 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-19 05:15:03,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:15:03,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:15:03,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:15:03,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:15:03,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-19 05:15:03,935 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-19 05:15:03,935 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-19 05:15:03,935 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-19 05:15:03,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 05:15:03,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 05:15:03,936 INFO L130 BoogieDeclarations]: Found specification of procedure stat [2023-11-19 05:15:03,936 INFO L138 BoogieDeclarations]: Found implementation of procedure stat [2023-11-19 05:15:03,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 05:15:03,936 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 05:15:03,937 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:15:03,937 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:15:03,937 INFO L130 BoogieDeclarations]: Found specification of procedure strftime [2023-11-19 05:15:03,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:15:03,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:15:03,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 05:15:03,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2023-11-19 05:15:03,938 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2023-11-19 05:15:03,938 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 05:15:03,938 INFO L130 BoogieDeclarations]: Found specification of procedure bb_show_usage [2023-11-19 05:15:03,938 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_show_usage [2023-11-19 05:15:03,939 INFO L130 BoogieDeclarations]: Found specification of procedure bb_ascii_isalnum [2023-11-19 05:15:03,939 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_ascii_isalnum [2023-11-19 05:15:03,939 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2023-11-19 05:15:03,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:15:03,940 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-11-19 05:15:03,940 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2023-11-19 05:15:03,941 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-19 05:15:03,942 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-19 05:15:03,942 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-19 05:15:03,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:15:04,558 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:15:04,560 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:15:08,118 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:15:09,194 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:15:09,194 INFO L302 CfgBuilder]: Removed 31 assume(true) statements. [2023-11-19 05:15:09,210 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:15:09 BoogieIcfgContainer [2023-11-19 05:15:09,210 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:15:09,214 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:15:09,214 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:15:09,217 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:15:09,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:15:00" (1/3) ... [2023-11-19 05:15:09,218 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@430ded0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:15:09, skipping insertion in model container [2023-11-19 05:15:09,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:03" (2/3) ... [2023-11-19 05:15:09,221 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@430ded0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:15:09, skipping insertion in model container [2023-11-19 05:15:09,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:15:09" (3/3) ... [2023-11-19 05:15:09,222 INFO L112 eAbstractionObserver]: Analyzing ICFG date-2.i [2023-11-19 05:15:09,243 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:15:09,243 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 128 error locations. [2023-11-19 05:15:09,315 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:15:09,322 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@573facc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:15:09,322 INFO L358 AbstractCegarLoop]: Starting to check reachability of 128 error locations. [2023-11-19 05:15:09,330 INFO L276 IsEmpty]: Start isEmpty. Operand has 693 states, 485 states have (on average 1.6680412371134021) internal successors, (809), 616 states have internal predecessors, (809), 65 states have call successors, (65), 14 states have call predecessors, (65), 14 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2023-11-19 05:15:09,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 05:15:09,338 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:15:09,339 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 05:15:09,339 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 125 more)] === [2023-11-19 05:15:09,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:15:09,345 INFO L85 PathProgramCache]: Analyzing trace with hash 2587639, now seen corresponding path program 1 times [2023-11-19 05:15:09,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:15:09,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563873084] [2023-11-19 05:15:09,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:09,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:15:09,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:10,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:15:10,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:15:10,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563873084] [2023-11-19 05:15:10,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563873084] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:15:10,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:15:10,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:15:10,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324049477] [2023-11-19 05:15:10,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:15:10,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:15:10,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:15:10,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:15:10,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:15:10,075 INFO L87 Difference]: Start difference. First operand has 693 states, 485 states have (on average 1.6680412371134021) internal successors, (809), 616 states have internal predecessors, (809), 65 states have call successors, (65), 14 states have call predecessors, (65), 14 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:15:11,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:15:11,712 INFO L93 Difference]: Finished difference Result 1368 states and 1875 transitions. [2023-11-19 05:15:11,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:15:11,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-19 05:15:11,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:15:11,732 INFO L225 Difference]: With dead ends: 1368 [2023-11-19 05:15:11,732 INFO L226 Difference]: Without dead ends: 676 [2023-11-19 05:15:11,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:15:11,747 INFO L413 NwaCegarLoop]: 771 mSDtfsCounter, 1 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:15:11,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1540 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-19 05:15:11,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2023-11-19 05:15:11,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 676. [2023-11-19 05:15:11,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 474 states have (on average 1.620253164556962) internal successors, (768), 611 states have internal predecessors, (768), 65 states have call successors, (65), 14 states have call predecessors, (65), 13 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2023-11-19 05:15:11,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 886 transitions. [2023-11-19 05:15:11,896 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 886 transitions. Word has length 3 [2023-11-19 05:15:11,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:15:11,897 INFO L495 AbstractCegarLoop]: Abstraction has 676 states and 886 transitions. [2023-11-19 05:15:11,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:15:11,897 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 886 transitions. [2023-11-19 05:15:11,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 05:15:11,899 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:15:11,899 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 05:15:11,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:15:11,899 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 125 more)] === [2023-11-19 05:15:11,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:15:11,900 INFO L85 PathProgramCache]: Analyzing trace with hash -220556571, now seen corresponding path program 1 times [2023-11-19 05:15:11,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:15:11,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220214571] [2023-11-19 05:15:11,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:11,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:15:11,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:12,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:15:12,143 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:15:12,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220214571] [2023-11-19 05:15:12,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220214571] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:15:12,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084723385] [2023-11-19 05:15:12,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:12,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:15:12,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db7ce01-beb3-4abb-b3a4-662ac7788ebd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:15:12,155 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db7ce01-beb3-4abb-b3a4-662ac7788ebd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:15:12,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db7ce01-beb3-4abb-b3a4-662ac7788ebd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:15:12,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:12,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:15:12,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:15:12,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:15:12,708 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:15:12,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084723385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:15:12,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:15:12,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-19 05:15:12,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477696495] [2023-11-19 05:15:12,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:15:12,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:15:12,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:15:12,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:15:12,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:15:12,711 INFO L87 Difference]: Start difference. First operand 676 states and 886 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:15:14,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:15:14,387 INFO L93 Difference]: Finished difference Result 676 states and 886 transitions. [2023-11-19 05:15:14,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:15:14,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 05:15:14,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:15:14,393 INFO L225 Difference]: With dead ends: 676 [2023-11-19 05:15:14,393 INFO L226 Difference]: Without dead ends: 675 [2023-11-19 05:15:14,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:15:14,395 INFO L413 NwaCegarLoop]: 767 mSDtfsCounter, 3 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1534 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:15:14,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1534 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-19 05:15:14,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2023-11-19 05:15:14,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 675. [2023-11-19 05:15:14,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 474 states have (on average 1.6181434599156117) internal successors, (767), 610 states have internal predecessors, (767), 65 states have call successors, (65), 14 states have call predecessors, (65), 13 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2023-11-19 05:15:14,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 885 transitions. [2023-11-19 05:15:14,439 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 885 transitions. Word has length 6 [2023-11-19 05:15:14,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:15:14,439 INFO L495 AbstractCegarLoop]: Abstraction has 675 states and 885 transitions. [2023-11-19 05:15:14,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:15:14,440 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 885 transitions. [2023-11-19 05:15:14,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 05:15:14,440 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:15:14,440 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-19 05:15:14,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db7ce01-beb3-4abb-b3a4-662ac7788ebd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:15:14,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db7ce01-beb3-4abb-b3a4-662ac7788ebd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:15:14,662 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 125 more)] === [2023-11-19 05:15:14,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:15:14,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1752681396, now seen corresponding path program 1 times [2023-11-19 05:15:14,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:15:14,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133990972] [2023-11-19 05:15:14,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:14,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:15:14,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:14,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:15:14,865 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:15:14,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133990972] [2023-11-19 05:15:14,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133990972] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:15:14,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:15:14,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:15:14,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859477169] [2023-11-19 05:15:14,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:15:14,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:15:14,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:15:14,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:15:14,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:15:14,871 INFO L87 Difference]: Start difference. First operand 675 states and 885 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:15:16,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:15:16,075 INFO L93 Difference]: Finished difference Result 675 states and 885 transitions. [2023-11-19 05:15:16,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:15:16,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-19 05:15:16,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:15:16,085 INFO L225 Difference]: With dead ends: 675 [2023-11-19 05:15:16,085 INFO L226 Difference]: Without dead ends: 674 [2023-11-19 05:15:16,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:15:16,086 INFO L413 NwaCegarLoop]: 767 mSDtfsCounter, 0 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1534 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:15:16,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1534 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-19 05:15:16,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2023-11-19 05:15:16,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 672. [2023-11-19 05:15:16,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 472 states have (on average 1.61864406779661) internal successors, (764), 607 states have internal predecessors, (764), 65 states have call successors, (65), 14 states have call predecessors, (65), 13 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2023-11-19 05:15:16,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 882 transitions. [2023-11-19 05:15:16,118 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 882 transitions. Word has length 7 [2023-11-19 05:15:16,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:15:16,118 INFO L495 AbstractCegarLoop]: Abstraction has 672 states and 882 transitions. [2023-11-19 05:15:16,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:15:16,119 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 882 transitions. [2023-11-19 05:15:16,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 05:15:16,119 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:15:16,119 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:15:16,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:15:16,120 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 125 more)] === [2023-11-19 05:15:16,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:15:16,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1289727416, now seen corresponding path program 1 times [2023-11-19 05:15:16,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:15:16,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074852461] [2023-11-19 05:15:16,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:16,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:15:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:16,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:15:16,294 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:15:16,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074852461] [2023-11-19 05:15:16,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074852461] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:15:16,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250578830] [2023-11-19 05:15:16,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:16,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:15:16,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db7ce01-beb3-4abb-b3a4-662ac7788ebd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:15:16,296 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db7ce01-beb3-4abb-b3a4-662ac7788ebd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:15:16,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db7ce01-beb3-4abb-b3a4-662ac7788ebd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:15:16,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:16,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:15:16,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:15:16,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:15:16,759 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:15:16,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250578830] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:15:16,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:15:16,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 05:15:16,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32738573] [2023-11-19 05:15:16,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:15:16,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:15:16,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:15:16,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:15:16,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:15:16,762 INFO L87 Difference]: Start difference. First operand 672 states and 882 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:15:17,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:15:17,649 INFO L93 Difference]: Finished difference Result 672 states and 882 transitions. [2023-11-19 05:15:17,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:15:17,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-11-19 05:15:17,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:15:17,655 INFO L225 Difference]: With dead ends: 672 [2023-11-19 05:15:17,655 INFO L226 Difference]: Without dead ends: 670 [2023-11-19 05:15:17,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:15:17,657 INFO L413 NwaCegarLoop]: 760 mSDtfsCounter, 592 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 05:15:17,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 979 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 05:15:17,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2023-11-19 05:15:17,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 670. [2023-11-19 05:15:17,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 472 states have (on average 1.6144067796610169) internal successors, (762), 605 states have internal predecessors, (762), 65 states have call successors, (65), 14 states have call predecessors, (65), 13 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2023-11-19 05:15:17,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 880 transitions. [2023-11-19 05:15:17,716 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 880 transitions. Word has length 9 [2023-11-19 05:15:17,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:15:17,718 INFO L495 AbstractCegarLoop]: Abstraction has 670 states and 880 transitions. [2023-11-19 05:15:17,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:15:17,718 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 880 transitions. [2023-11-19 05:15:17,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 05:15:17,719 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:15:17,719 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:15:17,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db7ce01-beb3-4abb-b3a4-662ac7788ebd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:15:17,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db7ce01-beb3-4abb-b3a4-662ac7788ebd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:15:17,950 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 125 more)] === [2023-11-19 05:15:17,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:15:17,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1326843718, now seen corresponding path program 1 times [2023-11-19 05:15:17,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:15:17,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99448201] [2023-11-19 05:15:17,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:17,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:15:18,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:18,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:15:18,160 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:15:18,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99448201] [2023-11-19 05:15:18,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99448201] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:15:18,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565995173] [2023-11-19 05:15:18,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:18,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:15:18,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db7ce01-beb3-4abb-b3a4-662ac7788ebd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:15:18,162 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db7ce01-beb3-4abb-b3a4-662ac7788ebd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:15:18,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db7ce01-beb3-4abb-b3a4-662ac7788ebd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 05:15:18,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:18,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:15:18,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:15:18,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:15:18,622 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:15:18,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:15:18,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565995173] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:15:18,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1208451203] [2023-11-19 05:15:18,672 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-19 05:15:18,672 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:15:18,675 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:15:18,681 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:15:18,681 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:15:37,696 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 129 for LOIs [2023-11-19 05:15:37,748 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:15:40,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1208451203] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:15:40,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:15:40,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 3, 4] total 13 [2023-11-19 05:15:40,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544360394] [2023-11-19 05:15:40,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:15:40,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 05:15:40,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:15:40,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 05:15:40,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-19 05:15:40,042 INFO L87 Difference]: Start difference. First operand 670 states and 880 transitions. Second operand has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:15:52,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:15:52,218 INFO L93 Difference]: Finished difference Result 672 states and 881 transitions. [2023-11-19 05:15:52,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 05:15:52,218 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-11-19 05:15:52,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:15:52,223 INFO L225 Difference]: With dead ends: 672 [2023-11-19 05:15:52,223 INFO L226 Difference]: Without dead ends: 670 [2023-11-19 05:15:52,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-19 05:15:52,225 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 2 mSDsluCounter, 2417 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3175 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:15:52,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3175 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2023-11-19 05:15:52,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2023-11-19 05:15:52,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 670. [2023-11-19 05:15:52,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 473 states have (on average 1.6088794926004228) internal successors, (761), 604 states have internal predecessors, (761), 65 states have call successors, (65), 15 states have call predecessors, (65), 14 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2023-11-19 05:15:52,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 879 transitions. [2023-11-19 05:15:52,259 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 879 transitions. Word has length 10 [2023-11-19 05:15:52,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:15:52,260 INFO L495 AbstractCegarLoop]: Abstraction has 670 states and 879 transitions. [2023-11-19 05:15:52,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:15:52,260 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 879 transitions. [2023-11-19 05:15:52,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 05:15:52,261 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:15:52,261 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:15:52,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db7ce01-beb3-4abb-b3a4-662ac7788ebd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-19 05:15:52,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db7ce01-beb3-4abb-b3a4-662ac7788ebd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:15:52,477 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 125 more)] === [2023-11-19 05:15:52,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:15:52,478 INFO L85 PathProgramCache]: Analyzing trace with hash 89278900, now seen corresponding path program 1 times [2023-11-19 05:15:52,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:15:52,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962660397] [2023-11-19 05:15:52,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:52,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:15:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:52,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:15:52,664 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:15:52,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962660397] [2023-11-19 05:15:52,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962660397] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:15:52,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416554019] [2023-11-19 05:15:52,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:52,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:15:52,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db7ce01-beb3-4abb-b3a4-662ac7788ebd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:15:52,666 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db7ce01-beb3-4abb-b3a4-662ac7788ebd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:15:52,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db7ce01-beb3-4abb-b3a4-662ac7788ebd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 05:15:53,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:53,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:15:53,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:15:53,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:15:53,154 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:15:53,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416554019] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:15:53,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:15:53,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 05:15:53,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427312346] [2023-11-19 05:15:53,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:15:53,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:15:53,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:15:53,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:15:53,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:15:53,156 INFO L87 Difference]: Start difference. First operand 670 states and 879 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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)