./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/ls-incomplete-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_0552526e-81e7-4820-bc9d-1ff4d932f7f2/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0552526e-81e7-4820-bc9d-1ff4d932f7f2/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0552526e-81e7-4820-bc9d-1ff4d932f7f2/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0552526e-81e7-4820-bc9d-1ff4d932f7f2/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/ls-incomplete-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0552526e-81e7-4820-bc9d-1ff4d932f7f2/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0552526e-81e7-4820-bc9d-1ff4d932f7f2/bin/utaipan-verify-SwPr7d2a91 --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 97427099fd8bef469ca09935f2571171b3c2da310fd359d755dfdaf75f2e6e9e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:15:52,807 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:15:52,929 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0552526e-81e7-4820-bc9d-1ff4d932f7f2/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-24 23:15:52,936 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:15:52,937 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:15:52,977 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:15:52,978 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:15:52,979 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:15:52,980 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:15:52,985 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:15:52,986 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:15:52,986 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:15:52,987 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:15:52,989 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:15:52,989 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:15:52,989 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:15:52,990 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:15:52,990 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:15:52,991 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:15:52,991 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:15:52,992 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:15:52,992 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:15:52,994 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:15:52,994 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:15:52,995 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:15:52,995 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:15:52,995 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:15:52,996 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:15:52,996 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:15:52,997 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:15:52,998 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:15:52,999 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:15:52,999 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:15:52,999 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:15:52,999 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:15:53,000 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:15:53,001 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:15:53,001 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:15:53,001 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:15:53,002 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:15:53,002 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:15:53,002 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:15:53,002 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:15:53,003 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:15:53,003 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:15:53,003 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:15:53,004 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_0552526e-81e7-4820-bc9d-1ff4d932f7f2/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0552526e-81e7-4820-bc9d-1ff4d932f7f2/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97427099fd8bef469ca09935f2571171b3c2da310fd359d755dfdaf75f2e6e9e [2023-11-24 23:15:53,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:15:53,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:15:53,436 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:15:53,437 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:15:53,439 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:15:53,440 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0552526e-81e7-4820-bc9d-1ff4d932f7f2/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/busybox-1.22.0/ls-incomplete-1.i [2023-11-24 23:15:56,649 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:15:57,235 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:15:57,236 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0552526e-81e7-4820-bc9d-1ff4d932f7f2/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-1.i [2023-11-24 23:15:57,279 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0552526e-81e7-4820-bc9d-1ff4d932f7f2/bin/utaipan-verify-SwPr7d2a91/data/3ef8e5a99/636b284fde3740759c002a78481b42b0/FLAG6ee3564d9 [2023-11-24 23:15:57,297 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0552526e-81e7-4820-bc9d-1ff4d932f7f2/bin/utaipan-verify-SwPr7d2a91/data/3ef8e5a99/636b284fde3740759c002a78481b42b0 [2023-11-24 23:15:57,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:15:57,305 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:15:57,308 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:15:57,309 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:15:57,315 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:15:57,316 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:15:57" (1/1) ... [2023-11-24 23:15:57,317 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43dd9595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:57, skipping insertion in model container [2023-11-24 23:15:57,317 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:15:57" (1/1) ... [2023-11-24 23:15:57,493 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:16:00,681 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:16:00,715 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:16:01,119 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:16:01,562 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:01,562 WARN L675 CHandler]: The function x2x_utoa is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:01,563 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:01,563 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:01,563 WARN L675 CHandler]: The function strncmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:01,563 WARN L675 CHandler]: The function strstr is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:01,563 WARN L675 CHandler]: The function strrchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:01,564 WARN L675 CHandler]: The function putchar is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:01,564 WARN L675 CHandler]: The function strncpy is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:01,565 WARN L675 CHandler]: The function fputs is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:01,565 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:01,565 WARN L675 CHandler]: The function ctime is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:01,565 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:01,574 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:16:01,575 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:01 WrapperNode [2023-11-24 23:16:01,575 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:16:01,576 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:16:01,576 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:16:01,577 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:16:01,585 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:01" (1/1) ... [2023-11-24 23:16:01,700 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:01" (1/1) ... [2023-11-24 23:16:01,892 INFO L138 Inliner]: procedures = 743, calls = 1282, calls flagged for inlining = 68, calls inlined = 66, statements flattened = 4703 [2023-11-24 23:16:01,893 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:16:01,894 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:16:01,895 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:16:01,895 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:16:01,904 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:01" (1/1) ... [2023-11-24 23:16:01,905 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:01" (1/1) ... [2023-11-24 23:16:01,934 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:01" (1/1) ... [2023-11-24 23:16:01,935 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:01" (1/1) ... [2023-11-24 23:16:02,037 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:01" (1/1) ... [2023-11-24 23:16:02,075 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:01" (1/1) ... [2023-11-24 23:16:02,104 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:01" (1/1) ... [2023-11-24 23:16:02,129 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:01" (1/1) ... [2023-11-24 23:16:02,162 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:16:02,164 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:16:02,164 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:16:02,164 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:16:02,166 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:01" (1/1) ... [2023-11-24 23:16:02,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:16:02,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0552526e-81e7-4820-bc9d-1ff4d932f7f2/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:02,202 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0552526e-81e7-4820-bc9d-1ff4d932f7f2/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:16:02,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0552526e-81e7-4820-bc9d-1ff4d932f7f2/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:16:02,248 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2023-11-24 23:16:02,248 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-11-24 23:16:02,248 INFO L130 BoogieDeclarations]: Found specification of procedure ctime [2023-11-24 23:16:02,248 INFO L130 BoogieDeclarations]: Found specification of procedure get_cached [2023-11-24 23:16:02,248 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cached [2023-11-24 23:16:02,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2023-11-24 23:16:02,249 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2023-11-24 23:16:02,250 INFO L130 BoogieDeclarations]: Found specification of procedure vasprintf [2023-11-24 23:16:02,250 INFO L138 BoogieDeclarations]: Found implementation of procedure vasprintf [2023-11-24 23:16:02,250 INFO L130 BoogieDeclarations]: Found specification of procedure utoa [2023-11-24 23:16:02,250 INFO L138 BoogieDeclarations]: Found implementation of procedure utoa [2023-11-24 23:16:02,250 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-24 23:16:02,251 INFO L130 BoogieDeclarations]: Found specification of procedure print_name [2023-11-24 23:16:02,251 INFO L138 BoogieDeclarations]: Found implementation of procedure print_name [2023-11-24 23:16:02,252 INFO L130 BoogieDeclarations]: Found specification of procedure xrealloc [2023-11-24 23:16:02,252 INFO L138 BoogieDeclarations]: Found implementation of procedure xrealloc [2023-11-24 23:16:02,253 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-24 23:16:02,253 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2023-11-24 23:16:02,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:16:02,253 INFO L130 BoogieDeclarations]: Found specification of procedure xzalloc [2023-11-24 23:16:02,253 INFO L138 BoogieDeclarations]: Found implementation of procedure xzalloc [2023-11-24 23:16:02,253 INFO L130 BoogieDeclarations]: Found specification of procedure count_dirs [2023-11-24 23:16:02,254 INFO L138 BoogieDeclarations]: Found implementation of procedure count_dirs [2023-11-24 23:16:02,254 INFO L130 BoogieDeclarations]: Found specification of procedure my_stat [2023-11-24 23:16:02,254 INFO L138 BoogieDeclarations]: Found implementation of procedure my_stat [2023-11-24 23:16:02,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-24 23:16:02,254 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-24 23:16:02,254 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-24 23:16:02,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-24 23:16:02,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:16:02,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:16:02,255 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2023-11-24 23:16:02,255 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-24 23:16:02,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:16:02,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:16:02,256 INFO L130 BoogieDeclarations]: Found specification of procedure dnsort [2023-11-24 23:16:02,256 INFO L138 BoogieDeclarations]: Found implementation of procedure dnsort [2023-11-24 23:16:02,256 INFO L130 BoogieDeclarations]: Found specification of procedure printable_string [2023-11-24 23:16:02,256 INFO L138 BoogieDeclarations]: Found implementation of procedure printable_string [2023-11-24 23:16:02,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:16:02,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:16:02,257 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-24 23:16:02,257 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-24 23:16:02,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-24 23:16:02,257 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-24 23:16:02,258 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-24 23:16:02,258 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-24 23:16:02,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-24 23:16:02,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-24 23:16:02,259 INFO L130 BoogieDeclarations]: Found specification of procedure bb_simple_perror_msg [2023-11-24 23:16:02,260 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_simple_perror_msg [2023-11-24 23:16:02,260 INFO L130 BoogieDeclarations]: Found specification of procedure get_cached_groupname [2023-11-24 23:16:02,260 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cached_groupname [2023-11-24 23:16:02,261 INFO L130 BoogieDeclarations]: Found specification of procedure sort_and_display_files [2023-11-24 23:16:02,261 INFO L138 BoogieDeclarations]: Found implementation of procedure sort_and_display_files [2023-11-24 23:16:02,261 INFO L130 BoogieDeclarations]: Found specification of procedure stat [2023-11-24 23:16:02,261 INFO L138 BoogieDeclarations]: Found implementation of procedure stat [2023-11-24 23:16:02,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-24 23:16:02,261 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-24 23:16:02,262 INFO L130 BoogieDeclarations]: Found specification of procedure fgcolor [2023-11-24 23:16:02,262 INFO L138 BoogieDeclarations]: Found implementation of procedure fgcolor [2023-11-24 23:16:02,263 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:16:02,263 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:16:02,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:16:02,263 INFO L130 BoogieDeclarations]: Found specification of procedure splitdnarray [2023-11-24 23:16:02,263 INFO L138 BoogieDeclarations]: Found implementation of procedure splitdnarray [2023-11-24 23:16:02,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:16:02,264 INFO L130 BoogieDeclarations]: Found specification of procedure bold [2023-11-24 23:16:02,264 INFO L138 BoogieDeclarations]: Found implementation of procedure bold [2023-11-24 23:16:02,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:16:02,264 INFO L130 BoogieDeclarations]: Found specification of procedure append_char [2023-11-24 23:16:02,264 INFO L138 BoogieDeclarations]: Found implementation of procedure append_char [2023-11-24 23:16:02,265 INFO L130 BoogieDeclarations]: Found specification of procedure scan_and_display_dirs_recur [2023-11-24 23:16:02,265 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_and_display_dirs_recur [2023-11-24 23:16:02,266 INFO L130 BoogieDeclarations]: Found specification of procedure lstat [2023-11-24 23:16:02,266 INFO L138 BoogieDeclarations]: Found implementation of procedure lstat [2023-11-24 23:16:02,266 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-24 23:16:02,266 INFO L130 BoogieDeclarations]: Found specification of procedure wh_helper [2023-11-24 23:16:02,266 INFO L138 BoogieDeclarations]: Found implementation of procedure wh_helper [2023-11-24 23:16:02,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:16:02,267 INFO L130 BoogieDeclarations]: Found specification of procedure bb_perror_msg [2023-11-24 23:16:02,267 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_perror_msg [2023-11-24 23:16:02,267 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2023-11-24 23:16:02,268 INFO L130 BoogieDeclarations]: Found specification of procedure isatty [2023-11-24 23:16:02,268 INFO L138 BoogieDeclarations]: Found implementation of procedure isatty [2023-11-24 23:16:02,268 INFO L130 BoogieDeclarations]: Found specification of procedure dnalloc [2023-11-24 23:16:02,268 INFO L138 BoogieDeclarations]: Found implementation of procedure dnalloc [2023-11-24 23:16:02,268 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-24 23:16:02,268 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-24 23:16:02,268 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-24 23:16:02,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:16:02,269 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2023-11-24 23:16:03,105 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:16:03,108 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:16:08,473 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:16:11,311 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:16:11,311 INFO L309 CfgBuilder]: Removed 66 assume(true) statements. [2023-11-24 23:16:11,313 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:16:11 BoogieIcfgContainer [2023-11-24 23:16:11,314 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:16:11,316 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:16:11,317 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:16:11,320 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:16:11,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:15:57" (1/3) ... [2023-11-24 23:16:11,324 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72f26a6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:16:11, skipping insertion in model container [2023-11-24 23:16:11,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:01" (2/3) ... [2023-11-24 23:16:11,325 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72f26a6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:16:11, skipping insertion in model container [2023-11-24 23:16:11,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:16:11" (3/3) ... [2023-11-24 23:16:11,327 INFO L112 eAbstractionObserver]: Analyzing ICFG ls-incomplete-1.i [2023-11-24 23:16:11,350 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:16:11,350 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 135 error locations. [2023-11-24 23:16:11,449 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:16:11,459 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;@7e01b5f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:16:11,459 INFO L358 AbstractCegarLoop]: Starting to check reachability of 135 error locations. [2023-11-24 23:16:11,472 INFO L276 IsEmpty]: Start isEmpty. Operand has 1023 states, 755 states have (on average 1.6251655629139072) internal successors, (1227), 898 states have internal predecessors, (1227), 101 states have call successors, (101), 32 states have call predecessors, (101), 32 states have return successors, (101), 100 states have call predecessors, (101), 101 states have call successors, (101) [2023-11-24 23:16:11,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 23:16:11,481 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:11,482 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-24 23:16:11,483 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [printable_stringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 132 more)] === [2023-11-24 23:16:11,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:11,492 INFO L85 PathProgramCache]: Analyzing trace with hash 4986120, now seen corresponding path program 1 times [2023-11-24 23:16:11,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:11,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851727896] [2023-11-24 23:16:11,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:11,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:11,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:12,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:16:12,277 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:12,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851727896] [2023-11-24 23:16:12,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851727896] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:12,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:16:12,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 23:16:12,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165874539] [2023-11-24 23:16:12,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:12,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:16:12,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:12,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:16:12,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:16:12,331 INFO L87 Difference]: Start difference. First operand has 1023 states, 755 states have (on average 1.6251655629139072) internal successors, (1227), 898 states have internal predecessors, (1227), 101 states have call successors, (101), 32 states have call predecessors, (101), 32 states have return successors, (101), 100 states have call predecessors, (101), 101 states have call successors, (101) 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) [2023-11-24 23:16:15,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:16:16,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:16,375 INFO L93 Difference]: Finished difference Result 1994 states and 2854 transitions. [2023-11-24 23:16:16,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:16:16,379 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 [2023-11-24 23:16:16,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:16,403 INFO L225 Difference]: With dead ends: 1994 [2023-11-24 23:16:16,403 INFO L226 Difference]: Without dead ends: 969 [2023-11-24 23:16:16,414 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 [2023-11-24 23:16:16,417 INFO L413 NwaCegarLoop]: 1109 mSDtfsCounter, 1 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2216 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:16,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2216 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-24 23:16:16,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2023-11-24 23:16:16,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 969. [2023-11-24 23:16:16,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 724 states have (on average 1.5290055248618784) internal successors, (1107), 853 states have internal predecessors, (1107), 94 states have call successors, (94), 31 states have call predecessors, (94), 30 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-24 23:16:16,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1288 transitions. [2023-11-24 23:16:16,537 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1288 transitions. Word has length 3 [2023-11-24 23:16:16,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:16,538 INFO L495 AbstractCegarLoop]: Abstraction has 969 states and 1288 transitions. [2023-11-24 23:16:16,538 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) [2023-11-24 23:16:16,538 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1288 transitions. [2023-11-24 23:16:16,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 23:16:16,539 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:16,539 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-24 23:16:16,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:16:16,540 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [printable_stringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 132 more)] === [2023-11-24 23:16:16,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:16,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1779502701, now seen corresponding path program 1 times [2023-11-24 23:16:16,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:16,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816201625] [2023-11-24 23:16:16,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:16,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:16,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:16:16,869 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:16,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816201625] [2023-11-24 23:16:16,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816201625] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:16:16,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813917945] [2023-11-24 23:16:16,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:16,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:16,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0552526e-81e7-4820-bc9d-1ff4d932f7f2/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:16,879 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0552526e-81e7-4820-bc9d-1ff4d932f7f2/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:16:16,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0552526e-81e7-4820-bc9d-1ff4d932f7f2/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:16:17,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:17,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 1072 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:16:17,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:17,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:16:17,715 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:16:17,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813917945] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:17,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:16:17,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-24 23:16:17,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773666943] [2023-11-24 23:16:17,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:17,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:16:17,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:17,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:16:17,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:16:17,719 INFO L87 Difference]: Start difference. First operand 969 states and 1288 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) [2023-11-24 23:16:21,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:16:22,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:16:23,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:23,322 INFO L93 Difference]: Finished difference Result 969 states and 1288 transitions. [2023-11-24 23:16:23,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:16:23,323 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 [2023-11-24 23:16:23,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:23,339 INFO L225 Difference]: With dead ends: 969 [2023-11-24 23:16:23,340 INFO L226 Difference]: Without dead ends: 968 [2023-11-24 23:16:23,341 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 [2023-11-24 23:16:23,342 INFO L413 NwaCegarLoop]: 1100 mSDtfsCounter, 3 mSDsluCounter, 1100 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:23,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2200 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 368 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2023-11-24 23:16:23,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2023-11-24 23:16:23,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 968. [2023-11-24 23:16:23,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 724 states have (on average 1.5276243093922652) internal successors, (1106), 852 states have internal predecessors, (1106), 94 states have call successors, (94), 31 states have call predecessors, (94), 30 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-24 23:16:23,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1287 transitions. [2023-11-24 23:16:23,402 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1287 transitions. Word has length 6 [2023-11-24 23:16:23,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:23,402 INFO L495 AbstractCegarLoop]: Abstraction has 968 states and 1287 transitions. [2023-11-24 23:16:23,403 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) [2023-11-24 23:16:23,403 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1287 transitions. [2023-11-24 23:16:23,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:16:23,403 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:23,404 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-24 23:16:23,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0552526e-81e7-4820-bc9d-1ff4d932f7f2/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-24 23:16:23,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0552526e-81e7-4820-bc9d-1ff4d932f7f2/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-24 23:16:23,614 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [printable_stringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 132 more)] === [2023-11-24 23:16:23,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:23,615 INFO L85 PathProgramCache]: Analyzing trace with hash 669993989, now seen corresponding path program 1 times [2023-11-24 23:16:23,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:23,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825953510] [2023-11-24 23:16:23,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:23,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:23,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:16:23,959 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:23,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825953510] [2023-11-24 23:16:23,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825953510] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:23,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:16:23,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:16:23,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135516929] [2023-11-24 23:16:23,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:23,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:16:23,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:23,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:16:23,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:16:23,963 INFO L87 Difference]: Start difference. First operand 968 states and 1287 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) [2023-11-24 23:16:27,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:16:28,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:28,801 INFO L93 Difference]: Finished difference Result 968 states and 1287 transitions. [2023-11-24 23:16:28,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:16:28,803 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 [2023-11-24 23:16:28,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:28,810 INFO L225 Difference]: With dead ends: 968 [2023-11-24 23:16:28,811 INFO L226 Difference]: Without dead ends: 967 [2023-11-24 23:16:28,812 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 [2023-11-24 23:16:28,813 INFO L413 NwaCegarLoop]: 1100 mSDtfsCounter, 0 mSDsluCounter, 1100 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:28,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2200 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 362 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2023-11-24 23:16:28,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2023-11-24 23:16:28,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 965. [2023-11-24 23:16:28,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 722 states have (on average 1.5277008310249307) internal successors, (1103), 849 states have internal predecessors, (1103), 94 states have call successors, (94), 31 states have call predecessors, (94), 30 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-24 23:16:28,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1284 transitions. [2023-11-24 23:16:28,864 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1284 transitions. Word has length 7 [2023-11-24 23:16:28,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:28,865 INFO L495 AbstractCegarLoop]: Abstraction has 965 states and 1284 transitions. [2023-11-24 23:16:28,865 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) [2023-11-24 23:16:28,866 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1284 transitions. [2023-11-24 23:16:28,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 23:16:28,866 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:28,867 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:28,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:16:28,867 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [printable_stringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 132 more)] === [2023-11-24 23:16:28,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:28,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1898113338, now seen corresponding path program 1 times [2023-11-24 23:16:28,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:28,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336621215] [2023-11-24 23:16:28,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:28,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:28,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:29,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:16:29,174 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:29,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336621215] [2023-11-24 23:16:29,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336621215] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:16:29,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521585988] [2023-11-24 23:16:29,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:29,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:29,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0552526e-81e7-4820-bc9d-1ff4d932f7f2/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:29,176 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0552526e-81e7-4820-bc9d-1ff4d932f7f2/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:16:29,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0552526e-81e7-4820-bc9d-1ff4d932f7f2/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:16:29,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:29,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 1088 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:16:29,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:29,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:16:29,894 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:16:29,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521585988] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:29,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:16:29,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-24 23:16:29,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699926278] [2023-11-24 23:16:29,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:29,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:16:29,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:29,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:16:29,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:16:29,897 INFO L87 Difference]: Start difference. First operand 965 states and 1284 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) [2023-11-24 23:16:33,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:16:35,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:35,415 INFO L93 Difference]: Finished difference Result 965 states and 1284 transitions. [2023-11-24 23:16:35,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:16:35,417 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 [2023-11-24 23:16:35,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:35,424 INFO L225 Difference]: With dead ends: 965 [2023-11-24 23:16:35,424 INFO L226 Difference]: Without dead ends: 963 [2023-11-24 23:16:35,425 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 [2023-11-24 23:16:35,426 INFO L413 NwaCegarLoop]: 1093 mSDtfsCounter, 383 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:35,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 1841 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 314 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2023-11-24 23:16:35,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2023-11-24 23:16:35,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2023-11-24 23:16:35,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 722 states have (on average 1.5249307479224377) internal successors, (1101), 847 states have internal predecessors, (1101), 94 states have call successors, (94), 31 states have call predecessors, (94), 30 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-24 23:16:35,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1282 transitions. [2023-11-24 23:16:35,467 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1282 transitions. Word has length 9 [2023-11-24 23:16:35,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:35,468 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1282 transitions. [2023-11-24 23:16:35,469 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) [2023-11-24 23:16:35,469 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1282 transitions. [2023-11-24 23:16:35,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 23:16:35,469 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:35,470 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:35,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0552526e-81e7-4820-bc9d-1ff4d932f7f2/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:16:35,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0552526e-81e7-4820-bc9d-1ff4d932f7f2/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-24 23:16:35,679 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [printable_stringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 132 more)] === [2023-11-24 23:16:35,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:35,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1288025785, now seen corresponding path program 1 times [2023-11-24 23:16:35,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:35,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879555011] [2023-11-24 23:16:35,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:35,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:36,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:16:36,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:36,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879555011] [2023-11-24 23:16:36,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879555011] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:16:36,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702684751] [2023-11-24 23:16:36,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:36,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:36,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0552526e-81e7-4820-bc9d-1ff4d932f7f2/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:36,033 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0552526e-81e7-4820-bc9d-1ff4d932f7f2/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:16:36,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0552526e-81e7-4820-bc9d-1ff4d932f7f2/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:16:36,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:36,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:16:36,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:36,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:16:36,761 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:16:36,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:16:36,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702684751] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:16:36,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [8400530] [2023-11-24 23:16:36,818 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-24 23:16:36,818 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:16:36,821 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:16:36,827 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:16:36,828 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs