./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/stty-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 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_63801a73-3a6e-4e5a-8990-5f3f8541dfe0/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63801a73-3a6e-4e5a-8990-5f3f8541dfe0/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63801a73-3a6e-4e5a-8990-5f3f8541dfe0/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63801a73-3a6e-4e5a-8990-5f3f8541dfe0/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/stty-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63801a73-3a6e-4e5a-8990-5f3f8541dfe0/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63801a73-3a6e-4e5a-8990-5f3f8541dfe0/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e0ada5a793906a8c21c0c37214d90767529226ee2d6e9139376b7842d17987b9 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:15:19,847 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:15:19,945 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63801a73-3a6e-4e5a-8990-5f3f8541dfe0/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-23 21:15:19,951 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:15:19,952 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:15:19,984 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:15:19,985 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:15:19,986 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:15:19,986 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:15:19,987 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:15:19,988 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:15:19,988 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:15:19,989 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:15:19,990 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:15:19,990 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:15:19,991 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:15:19,991 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:15:19,992 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:15:19,993 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:15:19,993 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:15:19,994 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:15:19,995 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:15:19,996 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:15:19,996 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:15:20,007 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:15:20,008 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:15:20,008 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:15:20,009 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:15:20,009 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:15:20,010 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 21:15:20,010 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:15:20,011 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:15:20,011 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:15:20,012 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:15:20,012 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:15:20,013 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:15:20,013 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:15:20,014 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:15:20,014 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:15:20,014 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:15:20,014 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:15:20,015 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:15:20,015 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:15:20,015 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:15:20,016 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:15:20,016 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:15:20,016 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_63801a73-3a6e-4e5a-8990-5f3f8541dfe0/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63801a73-3a6e-4e5a-8990-5f3f8541dfe0/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0ada5a793906a8c21c0c37214d90767529226ee2d6e9139376b7842d17987b9 [2023-11-23 21:15:20,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:15:20,399 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:15:20,402 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:15:20,403 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:15:20,405 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:15:20,406 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63801a73-3a6e-4e5a-8990-5f3f8541dfe0/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/busybox-1.22.0/stty-1.i [2023-11-23 21:15:23,577 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:15:24,127 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:15:24,128 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63801a73-3a6e-4e5a-8990-5f3f8541dfe0/sv-benchmarks/c/busybox-1.22.0/stty-1.i [2023-11-23 21:15:24,179 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63801a73-3a6e-4e5a-8990-5f3f8541dfe0/bin/utaipan-verify-mE87zJ7Ire/data/9bb8a2810/6f7f60ad87304a30bd4014c0adc65d62/FLAG06b311f8b [2023-11-23 21:15:24,196 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63801a73-3a6e-4e5a-8990-5f3f8541dfe0/bin/utaipan-verify-mE87zJ7Ire/data/9bb8a2810/6f7f60ad87304a30bd4014c0adc65d62 [2023-11-23 21:15:24,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:15:24,207 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:15:24,209 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:15:24,209 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:15:24,214 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:15:24,215 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:15:24" (1/1) ... [2023-11-23 21:15:24,216 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bc26aca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:24, skipping insertion in model container [2023-11-23 21:15:24,216 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:15:24" (1/1) ... [2023-11-23 21:15:24,397 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:15:27,005 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:15:27,100 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:15:27,430 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:15:27,663 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:27,663 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:27,664 WARN L675 CHandler]: The function strtoull is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:27,664 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:27,664 WARN L675 CHandler]: The function output_func is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:27,669 WARN L675 CHandler]: The function putchar is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:27,669 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:27,669 WARN L675 CHandler]: The function fputs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:27,669 WARN L675 CHandler]: The function vsnprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:27,669 WARN L675 CHandler]: The function close is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:27,677 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:15:27,678 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:27 WrapperNode [2023-11-23 21:15:27,678 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:15:27,680 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:15:27,680 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:15:27,680 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:15:27,688 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:27" (1/1) ... [2023-11-23 21:15:27,796 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:27" (1/1) ... [2023-11-23 21:15:27,962 INFO L138 Inliner]: procedures = 676, calls = 2288, calls flagged for inlining = 37, calls inlined = 35, statements flattened = 4457 [2023-11-23 21:15:27,963 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:15:27,964 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:15:27,964 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:15:27,964 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:15:27,974 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:27" (1/1) ... [2023-11-23 21:15:27,974 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:27" (1/1) ... [2023-11-23 21:15:28,007 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:27" (1/1) ... [2023-11-23 21:15:28,008 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:27" (1/1) ... [2023-11-23 21:15:28,163 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:27" (1/1) ... [2023-11-23 21:15:28,193 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:27" (1/1) ... [2023-11-23 21:15:28,229 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:27" (1/1) ... [2023-11-23 21:15:28,252 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:27" (1/1) ... [2023-11-23 21:15:28,291 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:15:28,292 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:15:28,292 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:15:28,293 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:15:28,293 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:27" (1/1) ... [2023-11-23 21:15:28,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:15:28,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63801a73-3a6e-4e5a-8990-5f3f8541dfe0/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:15:28,323 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63801a73-3a6e-4e5a-8990-5f3f8541dfe0/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:15:28,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63801a73-3a6e-4e5a-8990-5f3f8541dfe0/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:15:28,366 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-11-23 21:15:28,366 INFO L130 BoogieDeclarations]: Found specification of procedure bb_putchar [2023-11-23 21:15:28,367 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_putchar [2023-11-23 21:15:28,367 INFO L130 BoogieDeclarations]: Found specification of procedure fcntl [2023-11-23 21:15:28,367 INFO L138 BoogieDeclarations]: Found implementation of procedure fcntl [2023-11-23 21:15:28,367 INFO L130 BoogieDeclarations]: Found specification of procedure get_terminal_width_height [2023-11-23 21:15:28,367 INFO L138 BoogieDeclarations]: Found implementation of procedure get_terminal_width_height [2023-11-23 21:15:28,367 INFO L130 BoogieDeclarations]: Found specification of procedure close [2023-11-23 21:15:28,368 INFO L130 BoogieDeclarations]: Found specification of procedure set_control_char_or_die [2023-11-23 21:15:28,368 INFO L138 BoogieDeclarations]: Found implementation of procedure set_control_char_or_die [2023-11-23 21:15:28,369 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-23 21:15:28,369 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-23 21:15:28,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:15:28,369 INFO L130 BoogieDeclarations]: Found specification of procedure perror_on_device_and_die [2023-11-23 21:15:28,369 INFO L138 BoogieDeclarations]: Found implementation of procedure perror_on_device_and_die [2023-11-23 21:15:28,370 INFO L130 BoogieDeclarations]: Found specification of procedure set_window_size [2023-11-23 21:15:28,370 INFO L138 BoogieDeclarations]: Found implementation of procedure set_window_size [2023-11-23 21:15:28,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 21:15:28,371 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-23 21:15:28,371 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-23 21:15:28,372 INFO L130 BoogieDeclarations]: Found specification of procedure xatoul_sfx [2023-11-23 21:15:28,372 INFO L138 BoogieDeclarations]: Found implementation of procedure xatoul_sfx [2023-11-23 21:15:28,372 INFO L130 BoogieDeclarations]: Found specification of procedure find_param [2023-11-23 21:15:28,372 INFO L138 BoogieDeclarations]: Found implementation of procedure find_param [2023-11-23 21:15:28,373 INFO L130 BoogieDeclarations]: Found specification of procedure xatoul_range_sfx [2023-11-23 21:15:28,373 INFO L138 BoogieDeclarations]: Found implementation of procedure xatoul_range_sfx [2023-11-23 21:15:28,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:15:28,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:15:28,374 INFO L130 BoogieDeclarations]: Found specification of procedure tty_value_to_baud [2023-11-23 21:15:28,374 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_value_to_baud [2023-11-23 21:15:28,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:15:28,374 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2023-11-23 21:15:28,374 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-23 21:15:28,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:15:28,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:15:28,375 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2023-11-23 21:15:28,375 INFO L130 BoogieDeclarations]: Found specification of procedure nth_string [2023-11-23 21:15:28,375 INFO L138 BoogieDeclarations]: Found implementation of procedure nth_string [2023-11-23 21:15:28,375 INFO L130 BoogieDeclarations]: Found specification of procedure find_mode [2023-11-23 21:15:28,375 INFO L138 BoogieDeclarations]: Found implementation of procedure find_mode [2023-11-23 21:15:28,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:15:28,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:15:28,376 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-23 21:15:28,376 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-23 21:15:28,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-23 21:15:28,376 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-23 21:15:28,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 21:15:28,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:15:28,377 INFO L130 BoogieDeclarations]: Found specification of procedure display_speed [2023-11-23 21:15:28,377 INFO L138 BoogieDeclarations]: Found implementation of procedure display_speed [2023-11-23 21:15:28,377 INFO L130 BoogieDeclarations]: Found specification of procedure tty_baud_to_value [2023-11-23 21:15:28,377 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_baud_to_value [2023-11-23 21:15:28,378 INFO L130 BoogieDeclarations]: Found specification of procedure bb_perror_msg_and_die [2023-11-23 21:15:28,379 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_perror_msg_and_die [2023-11-23 21:15:28,379 INFO L130 BoogieDeclarations]: Found specification of procedure get_ptr_to_tcflag [2023-11-23 21:15:28,379 INFO L138 BoogieDeclarations]: Found implementation of procedure get_ptr_to_tcflag [2023-11-23 21:15:28,379 INFO L130 BoogieDeclarations]: Found specification of procedure tcgetattr [2023-11-23 21:15:28,379 INFO L138 BoogieDeclarations]: Found implementation of procedure tcgetattr [2023-11-23 21:15:28,380 INFO L130 BoogieDeclarations]: Found specification of procedure recover_mode [2023-11-23 21:15:28,380 INFO L138 BoogieDeclarations]: Found implementation of procedure recover_mode [2023-11-23 21:15:28,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:15:28,381 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:15:28,381 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:15:28,381 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:15:28,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:15:28,382 INFO L130 BoogieDeclarations]: Found specification of procedure set_speed_or_die [2023-11-23 21:15:28,382 INFO L138 BoogieDeclarations]: Found implementation of procedure set_speed_or_die [2023-11-23 21:15:28,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:15:28,383 INFO L130 BoogieDeclarations]: Found specification of procedure xstrtoull_range_sfx [2023-11-23 21:15:28,383 INFO L138 BoogieDeclarations]: Found implementation of procedure xstrtoull_range_sfx [2023-11-23 21:15:28,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:15:28,383 INFO L130 BoogieDeclarations]: Found specification of procedure ioctl [2023-11-23 21:15:28,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ioctl [2023-11-23 21:15:28,383 INFO L130 BoogieDeclarations]: Found specification of procedure find_control [2023-11-23 21:15:28,384 INFO L138 BoogieDeclarations]: Found implementation of procedure find_control [2023-11-23 21:15:28,384 INFO L130 BoogieDeclarations]: Found specification of procedure xatou [2023-11-23 21:15:28,384 INFO L138 BoogieDeclarations]: Found implementation of procedure xatou [2023-11-23 21:15:28,385 INFO L130 BoogieDeclarations]: Found specification of procedure perror_on_device [2023-11-23 21:15:28,385 INFO L138 BoogieDeclarations]: Found implementation of procedure perror_on_device [2023-11-23 21:15:28,385 INFO L130 BoogieDeclarations]: Found specification of procedure wh_helper [2023-11-23 21:15:28,385 INFO L138 BoogieDeclarations]: Found implementation of procedure wh_helper [2023-11-23 21:15:28,385 INFO L130 BoogieDeclarations]: Found specification of procedure set_mode [2023-11-23 21:15:28,385 INFO L138 BoogieDeclarations]: Found implementation of procedure set_mode [2023-11-23 21:15:28,386 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-11-23 21:15:28,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:15:28,386 INFO L130 BoogieDeclarations]: Found specification of procedure index_in_strings [2023-11-23 21:15:28,387 INFO L138 BoogieDeclarations]: Found implementation of procedure index_in_strings [2023-11-23 21:15:28,387 INFO L130 BoogieDeclarations]: Found specification of procedure newline [2023-11-23 21:15:28,387 INFO L138 BoogieDeclarations]: Found implementation of procedure newline [2023-11-23 21:15:28,387 INFO L130 BoogieDeclarations]: Found specification of procedure wrapf [2023-11-23 21:15:28,387 INFO L138 BoogieDeclarations]: Found implementation of procedure wrapf [2023-11-23 21:15:28,387 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-23 21:15:28,388 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-23 21:15:28,388 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-23 21:15:28,388 INFO L130 BoogieDeclarations]: Found specification of procedure display_window_size [2023-11-23 21:15:28,388 INFO L138 BoogieDeclarations]: Found implementation of procedure display_window_size [2023-11-23 21:15:28,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:15:29,022 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:15:29,025 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:15:33,956 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:15:36,587 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:15:36,588 INFO L309 CfgBuilder]: Removed 31 assume(true) statements. [2023-11-23 21:15:36,590 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:15:36 BoogieIcfgContainer [2023-11-23 21:15:36,590 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:15:36,594 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:15:36,594 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:15:36,597 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:15:36,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:15:24" (1/3) ... [2023-11-23 21:15:36,600 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a98396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:15:36, skipping insertion in model container [2023-11-23 21:15:36,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:27" (2/3) ... [2023-11-23 21:15:36,602 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a98396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:15:36, skipping insertion in model container [2023-11-23 21:15:36,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:15:36" (3/3) ... [2023-11-23 21:15:36,603 INFO L112 eAbstractionObserver]: Analyzing ICFG stty-1.i [2023-11-23 21:15:36,627 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:15:36,627 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 140 error locations. [2023-11-23 21:15:36,743 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:15:36,755 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;@7458aec1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:15:36,755 INFO L358 AbstractCegarLoop]: Starting to check reachability of 140 error locations. [2023-11-23 21:15:36,769 INFO L276 IsEmpty]: Start isEmpty. Operand has 933 states, 609 states have (on average 1.61247947454844) internal successors, (982), 792 states have internal predecessors, (982), 147 states have call successors, (147), 36 states have call predecessors, (147), 36 states have return successors, (147), 143 states have call predecessors, (147), 147 states have call successors, (147) [2023-11-23 21:15:36,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-23 21:15:36,780 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:36,781 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-23 21:15:36,781 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [set_control_char_or_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, set_control_char_or_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 138 more)] === [2023-11-23 21:15:36,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:36,793 INFO L85 PathProgramCache]: Analyzing trace with hash 3878972, now seen corresponding path program 1 times [2023-11-23 21:15:36,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:36,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605656392] [2023-11-23 21:15:36,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:36,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:37,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:37,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:37,996 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:37,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605656392] [2023-11-23 21:15:37,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605656392] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:37,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:37,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:15:38,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4851587] [2023-11-23 21:15:38,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:38,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:15:38,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:38,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:15:38,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:15:38,044 INFO L87 Difference]: Start difference. First operand has 933 states, 609 states have (on average 1.61247947454844) internal successors, (982), 792 states have internal predecessors, (982), 147 states have call successors, (147), 36 states have call predecessors, (147), 36 states have return successors, (147), 143 states have call predecessors, (147), 147 states have call successors, (147) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:40,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:15:42,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:15:43,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:43,179 INFO L93 Difference]: Finished difference Result 1842 states and 2597 transitions. [2023-11-23 21:15:43,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:15:43,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-23 21:15:43,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:43,202 INFO L225 Difference]: With dead ends: 1842 [2023-11-23 21:15:43,202 INFO L226 Difference]: Without dead ends: 878 [2023-11-23 21:15:43,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:15:43,217 INFO L413 NwaCegarLoop]: 1082 mSDtfsCounter, 1 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2162 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:43,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2162 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 213 Invalid, 2 Unknown, 0 Unchecked, 4.9s Time] [2023-11-23 21:15:43,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2023-11-23 21:15:43,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2023-11-23 21:15:43,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 592 states have (on average 1.5456081081081081) internal successors, (915), 755 states have internal predecessors, (915), 116 states have call successors, (116), 35 states have call predecessors, (116), 32 states have return successors, (96), 92 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-23 21:15:43,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1127 transitions. [2023-11-23 21:15:43,341 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1127 transitions. Word has length 3 [2023-11-23 21:15:43,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:43,342 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1127 transitions. [2023-11-23 21:15:43,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:43,342 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1127 transitions. [2023-11-23 21:15:43,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 21:15:43,343 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:43,344 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-23 21:15:43,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:15:43,344 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [set_control_char_or_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, set_control_char_or_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 138 more)] === [2023-11-23 21:15:43,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:43,345 INFO L85 PathProgramCache]: Analyzing trace with hash -403409180, now seen corresponding path program 1 times [2023-11-23 21:15:43,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:43,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928187353] [2023-11-23 21:15:43,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:43,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:44,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:44,320 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:44,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928187353] [2023-11-23 21:15:44,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928187353] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:15:44,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257719858] [2023-11-23 21:15:44,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:44,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:15:44,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63801a73-3a6e-4e5a-8990-5f3f8541dfe0/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:15:44,332 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63801a73-3a6e-4e5a-8990-5f3f8541dfe0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:15:44,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63801a73-3a6e-4e5a-8990-5f3f8541dfe0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:15:45,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:45,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 2939 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:15:45,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:15:45,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:45,848 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:15:45,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257719858] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:45,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:15:45,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-23 21:15:45,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221129281] [2023-11-23 21:15:45,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:45,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:15:45,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:45,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:15:45,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:15:45,854 INFO L87 Difference]: Start difference. First operand 878 states and 1127 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:48,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:15:50,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:15:52,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:15:53,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:53,281 INFO L93 Difference]: Finished difference Result 878 states and 1127 transitions. [2023-11-23 21:15:53,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:15:53,282 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-23 21:15:53,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:53,291 INFO L225 Difference]: With dead ends: 878 [2023-11-23 21:15:53,292 INFO L226 Difference]: Without dead ends: 877 [2023-11-23 21:15:53,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:15:53,295 INFO L413 NwaCegarLoop]: 1016 mSDtfsCounter, 2 mSDsluCounter, 2032 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3048 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:53,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3048 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 314 Invalid, 3 Unknown, 0 Unchecked, 7.3s Time] [2023-11-23 21:15:53,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2023-11-23 21:15:53,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 877. [2023-11-23 21:15:53,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 592 states have (on average 1.5439189189189189) internal successors, (914), 754 states have internal predecessors, (914), 116 states have call successors, (116), 35 states have call predecessors, (116), 32 states have return successors, (96), 92 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-23 21:15:53,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1126 transitions. [2023-11-23 21:15:53,366 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1126 transitions. Word has length 6 [2023-11-23 21:15:53,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:53,366 INFO L495 AbstractCegarLoop]: Abstraction has 877 states and 1126 transitions. [2023-11-23 21:15:53,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:53,367 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1126 transitions. [2023-11-23 21:15:53,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 21:15:53,368 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:53,368 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-23 21:15:53,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63801a73-3a6e-4e5a-8990-5f3f8541dfe0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:15:53,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63801a73-3a6e-4e5a-8990-5f3f8541dfe0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-23 21:15:53,591 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [set_control_char_or_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, set_control_char_or_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 138 more)] === [2023-11-23 21:15:53,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:53,592 INFO L85 PathProgramCache]: Analyzing trace with hash 379219577, now seen corresponding path program 1 times [2023-11-23 21:15:53,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:53,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610375194] [2023-11-23 21:15:53,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:53,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:54,226 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:15:54,227 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:54,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610375194] [2023-11-23 21:15:54,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610375194] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:54,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:54,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:15:54,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342835976] [2023-11-23 21:15:54,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:54,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:15:54,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:54,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:15:54,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:15:54,232 INFO L87 Difference]: Start difference. First operand 877 states and 1126 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:56,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:15:58,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:15:59,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:59,379 INFO L93 Difference]: Finished difference Result 877 states and 1126 transitions. [2023-11-23 21:15:59,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:15:59,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-23 21:15:59,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:59,390 INFO L225 Difference]: With dead ends: 877 [2023-11-23 21:15:59,390 INFO L226 Difference]: Without dead ends: 876 [2023-11-23 21:15:59,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:15:59,393 INFO L413 NwaCegarLoop]: 1016 mSDtfsCounter, 0 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2032 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:59,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2032 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 207 Invalid, 2 Unknown, 0 Unchecked, 5.1s Time] [2023-11-23 21:15:59,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2023-11-23 21:15:59,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 874. [2023-11-23 21:15:59,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 590 states have (on average 1.5440677966101695) internal successors, (911), 751 states have internal predecessors, (911), 116 states have call successors, (116), 35 states have call predecessors, (116), 32 states have return successors, (96), 92 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-23 21:15:59,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1123 transitions. [2023-11-23 21:15:59,444 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1123 transitions. Word has length 7 [2023-11-23 21:15:59,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:59,444 INFO L495 AbstractCegarLoop]: Abstraction has 874 states and 1123 transitions. [2023-11-23 21:15:59,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:59,445 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1123 transitions. [2023-11-23 21:15:59,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 21:15:59,446 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:59,446 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:15:59,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:15:59,447 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [set_control_char_or_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, set_control_char_or_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 138 more)] === [2023-11-23 21:15:59,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:59,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1273797764, now seen corresponding path program 1 times [2023-11-23 21:15:59,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:59,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12872528] [2023-11-23 21:15:59,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:59,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:59,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:00,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:16:00,203 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:00,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12872528] [2023-11-23 21:16:00,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12872528] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:16:00,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224450150] [2023-11-23 21:16:00,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:00,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:16:00,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63801a73-3a6e-4e5a-8990-5f3f8541dfe0/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:16:00,206 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63801a73-3a6e-4e5a-8990-5f3f8541dfe0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:16:00,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63801a73-3a6e-4e5a-8990-5f3f8541dfe0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:16:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:01,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 2955 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:16:01,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:16:01,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:16:01,444 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:16:01,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224450150] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:01,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:16:01,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-23 21:16:01,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122895978] [2023-11-23 21:16:01,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:01,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:16:01,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:01,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:16:01,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:16:01,448 INFO L87 Difference]: Start difference. First operand 874 states and 1123 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:16:04,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:16:06,246 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 [] [2023-11-23 21:16:06,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:06,582 INFO L93 Difference]: Finished difference Result 874 states and 1123 transitions. [2023-11-23 21:16:06,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:16:06,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-11-23 21:16:06,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:06,591 INFO L225 Difference]: With dead ends: 874 [2023-11-23 21:16:06,591 INFO L226 Difference]: Without dead ends: 872 [2023-11-23 21:16:06,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:16:06,594 INFO L413 NwaCegarLoop]: 1009 mSDtfsCounter, 395 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:06,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 1612 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 174 Invalid, 2 Unknown, 0 Unchecked, 5.1s Time] [2023-11-23 21:16:06,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2023-11-23 21:16:06,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 872. [2023-11-23 21:16:06,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 590 states have (on average 1.540677966101695) internal successors, (909), 749 states have internal predecessors, (909), 116 states have call successors, (116), 35 states have call predecessors, (116), 32 states have return successors, (96), 92 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-23 21:16:06,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1121 transitions. [2023-11-23 21:16:06,644 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1121 transitions. Word has length 9 [2023-11-23 21:16:06,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:06,646 INFO L495 AbstractCegarLoop]: Abstraction has 872 states and 1121 transitions. [2023-11-23 21:16:06,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:16:06,647 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1121 transitions. [2023-11-23 21:16:06,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-23 21:16:06,647 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:06,648 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:06,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63801a73-3a6e-4e5a-8990-5f3f8541dfe0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:16:06,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63801a73-3a6e-4e5a-8990-5f3f8541dfe0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-23 21:16:06,864 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [set_control_char_or_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, set_control_char_or_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 138 more)] === [2023-11-23 21:16:06,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:06,864 INFO L85 PathProgramCache]: Analyzing trace with hash 833027298, now seen corresponding path program 1 times [2023-11-23 21:16:06,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:06,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196514904] [2023-11-23 21:16:06,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:06,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:07,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:07,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:16:07,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:07,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196514904] [2023-11-23 21:16:07,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196514904] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:16:07,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127248876] [2023-11-23 21:16:07,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:07,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:16:07,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63801a73-3a6e-4e5a-8990-5f3f8541dfe0/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:16:07,501 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63801a73-3a6e-4e5a-8990-5f3f8541dfe0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:16:07,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63801a73-3a6e-4e5a-8990-5f3f8541dfe0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:16:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:08,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 2956 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:16:08,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:16:08,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:16:08,823 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:16:08,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:16:08,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127248876] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:16:08,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [589410163] [2023-11-23 21:16:08,920 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-23 21:16:08,921 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:16:08,925 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:16:08,933 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:16:08,933 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs