./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 527bcce2 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_75f7c74c-d97f-40b0-9e61-ac2bb7b87d70/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c74c-d97f-40b0-9e61-ac2bb7b87d70/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c74c-d97f-40b0-9e61-ac2bb7b87d70/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c74c-d97f-40b0-9e61-ac2bb7b87d70/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/stty-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c74c-d97f-40b0-9e61-ac2bb7b87d70/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c74c-d97f-40b0-9e61-ac2bb7b87d70/bin/uautomizer-verify-bycVGegfSx --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e0ada5a793906a8c21c0c37214d90767529226ee2d6e9139376b7842d17987b9 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:23:40,346 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:23:40,458 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c74c-d97f-40b0-9e61-ac2bb7b87d70/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-21 22:23:40,465 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:23:40,466 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:23:40,510 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:23:40,511 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:23:40,512 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:23:40,513 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:23:40,518 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:23:40,518 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:23:40,519 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:23:40,520 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:23:40,521 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:23:40,522 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:23:40,522 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:23:40,523 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:23:40,523 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:23:40,524 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:23:40,524 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:23:40,525 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:23:40,526 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:23:40,526 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 22:23:40,527 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:23:40,527 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:23:40,527 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:23:40,528 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:23:40,529 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:23:40,529 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:23:40,530 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:23:40,531 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:23:40,531 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:23:40,532 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:23:40,532 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:23:40,532 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:23:40,533 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:23:40,533 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:23:40,533 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:23:40,533 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:23:40,534 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:23:40,534 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:23:40,535 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_75f7c74c-d97f-40b0-9e61-ac2bb7b87d70/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c74c-d97f-40b0-9e61-ac2bb7b87d70/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0ada5a793906a8c21c0c37214d90767529226ee2d6e9139376b7842d17987b9 [2023-11-21 22:23:40,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:23:40,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:23:40,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:23:40,905 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:23:40,905 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:23:40,907 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c74c-d97f-40b0-9e61-ac2bb7b87d70/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/busybox-1.22.0/stty-1.i [2023-11-21 22:23:43,983 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:23:44,584 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:23:44,585 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c74c-d97f-40b0-9e61-ac2bb7b87d70/sv-benchmarks/c/busybox-1.22.0/stty-1.i [2023-11-21 22:23:44,631 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c74c-d97f-40b0-9e61-ac2bb7b87d70/bin/uautomizer-verify-bycVGegfSx/data/294cffde8/959f48630f574d72a8c31c0fc9753303/FLAG7e3182506 [2023-11-21 22:23:44,647 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c74c-d97f-40b0-9e61-ac2bb7b87d70/bin/uautomizer-verify-bycVGegfSx/data/294cffde8/959f48630f574d72a8c31c0fc9753303 [2023-11-21 22:23:44,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:23:44,654 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:23:44,657 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:23:44,657 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:23:44,662 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:23:44,663 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:23:44" (1/1) ... [2023-11-21 22:23:44,664 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10a1e816 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:44, skipping insertion in model container [2023-11-21 22:23:44,664 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:23:44" (1/1) ... [2023-11-21 22:23:44,824 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:23:46,992 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:23:47,074 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:23:47,365 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:23:47,732 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:23:47,732 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:23:47,733 WARN L675 CHandler]: The function strtoull is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:23:47,733 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:23:47,733 WARN L675 CHandler]: The function output_func is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:23:47,733 WARN L675 CHandler]: The function putchar is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:23:47,734 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:23:47,734 WARN L675 CHandler]: The function fputs is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:23:47,734 WARN L675 CHandler]: The function vsnprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:23:47,734 WARN L675 CHandler]: The function close is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:23:47,742 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:23:47,743 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:47 WrapperNode [2023-11-21 22:23:47,743 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:23:47,744 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:23:47,745 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:23:47,745 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:23:47,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:47" (1/1) ... [2023-11-21 22:23:47,866 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:47" (1/1) ... [2023-11-21 22:23:48,040 INFO L138 Inliner]: procedures = 676, calls = 2288, calls flagged for inlining = 37, calls inlined = 35, statements flattened = 4457 [2023-11-21 22:23:48,041 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:23:48,042 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:23:48,042 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:23:48,042 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:23:48,053 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:47" (1/1) ... [2023-11-21 22:23:48,054 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:47" (1/1) ... [2023-11-21 22:23:48,084 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:47" (1/1) ... [2023-11-21 22:23:48,097 WARN L106 HeapSplitter]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2023-11-21 22:23:48,098 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:47" (1/1) ... [2023-11-21 22:23:48,099 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:47" (1/1) ... [2023-11-21 22:23:48,270 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:47" (1/1) ... [2023-11-21 22:23:48,311 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:47" (1/1) ... [2023-11-21 22:23:48,346 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:47" (1/1) ... [2023-11-21 22:23:48,372 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:47" (1/1) ... [2023-11-21 22:23:48,414 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:23:48,415 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:23:48,416 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:23:48,416 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:23:48,417 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:47" (1/1) ... [2023-11-21 22:23:48,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:23:48,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c74c-d97f-40b0-9e61-ac2bb7b87d70/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:23:48,456 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c74c-d97f-40b0-9e61-ac2bb7b87d70/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:23:48,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c74c-d97f-40b0-9e61-ac2bb7b87d70/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:23:48,488 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-11-21 22:23:48,488 INFO L130 BoogieDeclarations]: Found specification of procedure bb_putchar [2023-11-21 22:23:48,488 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_putchar [2023-11-21 22:23:48,489 INFO L130 BoogieDeclarations]: Found specification of procedure fcntl [2023-11-21 22:23:48,489 INFO L138 BoogieDeclarations]: Found implementation of procedure fcntl [2023-11-21 22:23:48,489 INFO L130 BoogieDeclarations]: Found specification of procedure get_terminal_width_height [2023-11-21 22:23:48,489 INFO L138 BoogieDeclarations]: Found implementation of procedure get_terminal_width_height [2023-11-21 22:23:48,489 INFO L130 BoogieDeclarations]: Found specification of procedure close [2023-11-21 22:23:48,490 INFO L130 BoogieDeclarations]: Found specification of procedure set_control_char_or_die [2023-11-21 22:23:48,490 INFO L138 BoogieDeclarations]: Found implementation of procedure set_control_char_or_die [2023-11-21 22:23:48,490 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-21 22:23:48,490 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-21 22:23:48,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:23:48,491 INFO L130 BoogieDeclarations]: Found specification of procedure perror_on_device_and_die [2023-11-21 22:23:48,491 INFO L138 BoogieDeclarations]: Found implementation of procedure perror_on_device_and_die [2023-11-21 22:23:48,491 INFO L130 BoogieDeclarations]: Found specification of procedure set_window_size [2023-11-21 22:23:48,491 INFO L138 BoogieDeclarations]: Found implementation of procedure set_window_size [2023-11-21 22:23:48,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-21 22:23:48,492 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-21 22:23:48,492 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-21 22:23:48,492 INFO L130 BoogieDeclarations]: Found specification of procedure xatoul_sfx [2023-11-21 22:23:48,492 INFO L138 BoogieDeclarations]: Found implementation of procedure xatoul_sfx [2023-11-21 22:23:48,493 INFO L130 BoogieDeclarations]: Found specification of procedure find_param [2023-11-21 22:23:48,493 INFO L138 BoogieDeclarations]: Found implementation of procedure find_param [2023-11-21 22:23:48,493 INFO L130 BoogieDeclarations]: Found specification of procedure xatoul_range_sfx [2023-11-21 22:23:48,493 INFO L138 BoogieDeclarations]: Found implementation of procedure xatoul_range_sfx [2023-11-21 22:23:48,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-21 22:23:48,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 22:23:48,494 INFO L130 BoogieDeclarations]: Found specification of procedure tty_value_to_baud [2023-11-21 22:23:48,494 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_value_to_baud [2023-11-21 22:23:48,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 22:23:48,494 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2023-11-21 22:23:48,494 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-21 22:23:48,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:23:48,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 22:23:48,495 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2023-11-21 22:23:48,495 INFO L130 BoogieDeclarations]: Found specification of procedure nth_string [2023-11-21 22:23:48,495 INFO L138 BoogieDeclarations]: Found implementation of procedure nth_string [2023-11-21 22:23:48,496 INFO L130 BoogieDeclarations]: Found specification of procedure find_mode [2023-11-21 22:23:48,496 INFO L138 BoogieDeclarations]: Found implementation of procedure find_mode [2023-11-21 22:23:48,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:23:48,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:23:48,496 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-21 22:23:48,497 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-21 22:23:48,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-21 22:23:48,497 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-21 22:23:48,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-21 22:23:48,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-21 22:23:48,497 INFO L130 BoogieDeclarations]: Found specification of procedure display_speed [2023-11-21 22:23:48,498 INFO L138 BoogieDeclarations]: Found implementation of procedure display_speed [2023-11-21 22:23:48,498 INFO L130 BoogieDeclarations]: Found specification of procedure tty_baud_to_value [2023-11-21 22:23:48,498 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_baud_to_value [2023-11-21 22:23:48,498 INFO L130 BoogieDeclarations]: Found specification of procedure bb_perror_msg_and_die [2023-11-21 22:23:48,498 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_perror_msg_and_die [2023-11-21 22:23:48,499 INFO L130 BoogieDeclarations]: Found specification of procedure get_ptr_to_tcflag [2023-11-21 22:23:48,499 INFO L138 BoogieDeclarations]: Found implementation of procedure get_ptr_to_tcflag [2023-11-21 22:23:48,499 INFO L130 BoogieDeclarations]: Found specification of procedure tcgetattr [2023-11-21 22:23:48,499 INFO L138 BoogieDeclarations]: Found implementation of procedure tcgetattr [2023-11-21 22:23:48,499 INFO L130 BoogieDeclarations]: Found specification of procedure recover_mode [2023-11-21 22:23:48,500 INFO L138 BoogieDeclarations]: Found implementation of procedure recover_mode [2023-11-21 22:23:48,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-21 22:23:48,500 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-21 22:23:48,500 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 22:23:48,500 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 22:23:48,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:23:48,501 INFO L130 BoogieDeclarations]: Found specification of procedure set_speed_or_die [2023-11-21 22:23:48,501 INFO L138 BoogieDeclarations]: Found implementation of procedure set_speed_or_die [2023-11-21 22:23:48,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 22:23:48,501 INFO L130 BoogieDeclarations]: Found specification of procedure xstrtoull_range_sfx [2023-11-21 22:23:48,501 INFO L138 BoogieDeclarations]: Found implementation of procedure xstrtoull_range_sfx [2023-11-21 22:23:48,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-21 22:23:48,502 INFO L130 BoogieDeclarations]: Found specification of procedure ioctl [2023-11-21 22:23:48,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ioctl [2023-11-21 22:23:48,502 INFO L130 BoogieDeclarations]: Found specification of procedure find_control [2023-11-21 22:23:48,502 INFO L138 BoogieDeclarations]: Found implementation of procedure find_control [2023-11-21 22:23:48,503 INFO L130 BoogieDeclarations]: Found specification of procedure xatou [2023-11-21 22:23:48,503 INFO L138 BoogieDeclarations]: Found implementation of procedure xatou [2023-11-21 22:23:48,503 INFO L130 BoogieDeclarations]: Found specification of procedure perror_on_device [2023-11-21 22:23:48,503 INFO L138 BoogieDeclarations]: Found implementation of procedure perror_on_device [2023-11-21 22:23:48,503 INFO L130 BoogieDeclarations]: Found specification of procedure wh_helper [2023-11-21 22:23:48,503 INFO L138 BoogieDeclarations]: Found implementation of procedure wh_helper [2023-11-21 22:23:48,504 INFO L130 BoogieDeclarations]: Found specification of procedure set_mode [2023-11-21 22:23:48,504 INFO L138 BoogieDeclarations]: Found implementation of procedure set_mode [2023-11-21 22:23:48,504 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-11-21 22:23:48,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 22:23:48,504 INFO L130 BoogieDeclarations]: Found specification of procedure index_in_strings [2023-11-21 22:23:48,505 INFO L138 BoogieDeclarations]: Found implementation of procedure index_in_strings [2023-11-21 22:23:48,505 INFO L130 BoogieDeclarations]: Found specification of procedure newline [2023-11-21 22:23:48,505 INFO L138 BoogieDeclarations]: Found implementation of procedure newline [2023-11-21 22:23:48,505 INFO L130 BoogieDeclarations]: Found specification of procedure wrapf [2023-11-21 22:23:48,505 INFO L138 BoogieDeclarations]: Found implementation of procedure wrapf [2023-11-21 22:23:48,506 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-21 22:23:48,506 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-21 22:23:48,506 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-21 22:23:48,506 INFO L130 BoogieDeclarations]: Found specification of procedure display_window_size [2023-11-21 22:23:48,506 INFO L138 BoogieDeclarations]: Found implementation of procedure display_window_size [2023-11-21 22:23:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 22:23:49,081 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:23:49,084 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:23:53,919 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:23:57,155 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:23:57,156 INFO L308 CfgBuilder]: Removed 31 assume(true) statements. [2023-11-21 22:23:57,158 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:23:57 BoogieIcfgContainer [2023-11-21 22:23:57,158 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:23:57,161 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:23:57,161 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:23:57,164 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:23:57,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:23:44" (1/3) ... [2023-11-21 22:23:57,166 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b7772f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:23:57, skipping insertion in model container [2023-11-21 22:23:57,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:47" (2/3) ... [2023-11-21 22:23:57,166 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b7772f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:23:57, skipping insertion in model container [2023-11-21 22:23:57,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:23:57" (3/3) ... [2023-11-21 22:23:57,168 INFO L112 eAbstractionObserver]: Analyzing ICFG stty-1.i [2023-11-21 22:23:57,191 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:23:57,191 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 140 error locations. [2023-11-21 22:23:57,267 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:23:57,274 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=PETRI_NET, 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;@2b73958f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:23:57,274 INFO L358 AbstractCegarLoop]: Starting to check reachability of 140 error locations. [2023-11-21 22:23:57,284 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) [2023-11-21 22:23:57,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-21 22:23:57,293 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:23:57,293 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-21 22:23:57,294 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)] === [2023-11-21 22:23:57,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:23:57,300 INFO L85 PathProgramCache]: Analyzing trace with hash 3878972, now seen corresponding path program 1 times [2023-11-21 22:23:57,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:23:57,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885128794] [2023-11-21 22:23:57,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:23:57,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:23:57,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:58,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:23:58,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:23:58,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885128794] [2023-11-21 22:23:58,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885128794] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:23:58,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:23:58,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:23:58,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131898215] [2023-11-21 22:23:58,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:23:58,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:23:58,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:23:58,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:23:58,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:23:58,446 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) [2023-11-21 22:24:01,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 22:24:03,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 22:24:03,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:24:03,463 INFO L93 Difference]: Finished difference Result 1842 states and 2597 transitions. [2023-11-21 22:24:03,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:24:03,466 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 [2023-11-21 22:24:03,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:24:03,494 INFO L225 Difference]: With dead ends: 1842 [2023-11-21 22:24:03,496 INFO L226 Difference]: Without dead ends: 878 [2023-11-21 22:24:03,509 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 [2023-11-21 22:24:03,514 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 [2023-11-21 22:24:03,516 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] [2023-11-21 22:24:03,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2023-11-21 22:24:03,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2023-11-21 22:24:03,637 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) [2023-11-21 22:24:03,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1127 transitions. [2023-11-21 22:24:03,647 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1127 transitions. Word has length 3 [2023-11-21 22:24:03,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:24:03,648 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1127 transitions. [2023-11-21 22:24:03,648 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) [2023-11-21 22:24:03,713 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1127 transitions. [2023-11-21 22:24:03,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 22:24:03,714 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:24:03,715 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-21 22:24:03,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:24:03,715 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)] === [2023-11-21 22:24:03,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:24:03,717 INFO L85 PathProgramCache]: Analyzing trace with hash -403409180, now seen corresponding path program 1 times [2023-11-21 22:24:03,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:24:03,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631414031] [2023-11-21 22:24:03,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:24:03,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:24:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:04,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:24:04,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:24:04,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631414031] [2023-11-21 22:24:04,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631414031] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:24:04,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028646309] [2023-11-21 22:24:04,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:24:04,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:24:04,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c74c-d97f-40b0-9e61-ac2bb7b87d70/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:24:04,705 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c74c-d97f-40b0-9e61-ac2bb7b87d70/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:24:04,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c74c-d97f-40b0-9e61-ac2bb7b87d70/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:24:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:05,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 2939 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:24:05,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:24:05,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:24:05,959 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:24:05,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028646309] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:24:05,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:24:05,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-21 22:24:05,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828653391] [2023-11-21 22:24:05,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:24:05,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:24:05,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:24:05,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:24:05,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:24:05,963 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) [2023-11-21 22:24:08,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 22:24:10,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 22:24:12,902 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 [] [2023-11-21 22:24:13,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:24:13,305 INFO L93 Difference]: Finished difference Result 878 states and 1127 transitions. [2023-11-21 22:24:13,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:24:13,306 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 [2023-11-21 22:24:13,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:24:13,313 INFO L225 Difference]: With dead ends: 878 [2023-11-21 22:24:13,313 INFO L226 Difference]: Without dead ends: 877 [2023-11-21 22:24:13,314 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 [2023-11-21 22:24:13,315 INFO L413 NwaCegarLoop]: 1016 mSDtfsCounter, 2 mSDsluCounter, 2032 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s 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 [2023-11-21 22:24:13,316 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] [2023-11-21 22:24:13,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2023-11-21 22:24:13,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 877. [2023-11-21 22:24:13,418 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) [2023-11-21 22:24:13,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1126 transitions. [2023-11-21 22:24:13,433 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1126 transitions. Word has length 6 [2023-11-21 22:24:13,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:24:13,433 INFO L495 AbstractCegarLoop]: Abstraction has 877 states and 1126 transitions. [2023-11-21 22:24:13,433 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) [2023-11-21 22:24:13,434 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1126 transitions. [2023-11-21 22:24:13,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-21 22:24:13,434 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:24:13,434 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-21 22:24:13,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c74c-d97f-40b0-9e61-ac2bb7b87d70/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 22:24:13,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c74c-d97f-40b0-9e61-ac2bb7b87d70/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:24:13,662 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)] === [2023-11-21 22:24:13,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:24:13,664 INFO L85 PathProgramCache]: Analyzing trace with hash 379219577, now seen corresponding path program 1 times [2023-11-21 22:24:13,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:24:13,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698607203] [2023-11-21 22:24:13,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:24:13,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:24:13,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:14,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:24:14,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:24:14,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698607203] [2023-11-21 22:24:14,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698607203] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:24:14,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:24:14,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:24:14,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246424383] [2023-11-21 22:24:14,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:24:14,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:24:14,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:24:14,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:24:14,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:24:14,112 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) [2023-11-21 22:24:16,767 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 [] [2023-11-21 22:24:18,772 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 [] [2023-11-21 22:24:19,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:24:19,103 INFO L93 Difference]: Finished difference Result 877 states and 1126 transitions. [2023-11-21 22:24:19,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:24:19,104 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 [2023-11-21 22:24:19,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:24:19,111 INFO L225 Difference]: With dead ends: 877 [2023-11-21 22:24:19,111 INFO L226 Difference]: Without dead ends: 876 [2023-11-21 22:24:19,112 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 [2023-11-21 22:24:19,113 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, 4.9s IncrementalHoareTripleChecker+Time [2023-11-21 22:24:19,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2032 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 207 Invalid, 2 Unknown, 0 Unchecked, 4.9s Time] [2023-11-21 22:24:19,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2023-11-21 22:24:19,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 874. [2023-11-21 22:24:19,161 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) [2023-11-21 22:24:19,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1123 transitions. [2023-11-21 22:24:19,171 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1123 transitions. Word has length 7 [2023-11-21 22:24:19,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:24:19,172 INFO L495 AbstractCegarLoop]: Abstraction has 874 states and 1123 transitions. [2023-11-21 22:24:19,177 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) [2023-11-21 22:24:19,177 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1123 transitions. [2023-11-21 22:24:19,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 22:24:19,178 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:24:19,178 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:24:19,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:24:19,178 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)] === [2023-11-21 22:24:19,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:24:19,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1273797764, now seen corresponding path program 1 times [2023-11-21 22:24:19,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:24:19,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798613549] [2023-11-21 22:24:19,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:24:19,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:24:19,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:19,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:24:19,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:19,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:24:19,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:24:19,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798613549] [2023-11-21 22:24:19,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798613549] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:24:19,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682844717] [2023-11-21 22:24:19,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:24:19,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:24:19,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c74c-d97f-40b0-9e61-ac2bb7b87d70/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:24:19,777 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c74c-d97f-40b0-9e61-ac2bb7b87d70/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:24:19,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c74c-d97f-40b0-9e61-ac2bb7b87d70/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 22:24:20,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:20,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 2955 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 22:24:20,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:24:20,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:24:20,923 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:24:20,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682844717] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:24:20,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:24:20,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-21 22:24:20,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587529739] [2023-11-21 22:24:20,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:24:20,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:24:20,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:24:20,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:24:20,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:24:20,926 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) [2023-11-21 22:24:23,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 22:24:25,674 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 [] [2023-11-21 22:24:25,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:24:25,954 INFO L93 Difference]: Finished difference Result 874 states and 1123 transitions. [2023-11-21 22:24:25,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:24:25,955 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 [2023-11-21 22:24:25,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:24:25,961 INFO L225 Difference]: With dead ends: 874 [2023-11-21 22:24:25,961 INFO L226 Difference]: Without dead ends: 872 [2023-11-21 22:24:25,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:24:25,963 INFO L413 NwaCegarLoop]: 1009 mSDtfsCounter, 395 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s 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, 5.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:24:25,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 1612 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 174 Invalid, 2 Unknown, 0 Unchecked, 5.0s Time] [2023-11-21 22:24:25,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2023-11-21 22:24:25,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 872. [2023-11-21 22:24:25,994 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) [2023-11-21 22:24:26,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1121 transitions. [2023-11-21 22:24:26,002 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1121 transitions. Word has length 9 [2023-11-21 22:24:26,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:24:26,003 INFO L495 AbstractCegarLoop]: Abstraction has 872 states and 1121 transitions. [2023-11-21 22:24:26,003 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) [2023-11-21 22:24:26,003 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1121 transitions. [2023-11-21 22:24:26,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-21 22:24:26,004 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:24:26,004 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:24:26,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c74c-d97f-40b0-9e61-ac2bb7b87d70/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:24:26,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c74c-d97f-40b0-9e61-ac2bb7b87d70/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:24:26,221 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)] === [2023-11-21 22:24:26,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:24:26,222 INFO L85 PathProgramCache]: Analyzing trace with hash 833027298, now seen corresponding path program 1 times [2023-11-21 22:24:26,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:24:26,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338064168] [2023-11-21 22:24:26,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:24:26,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:24:26,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:26,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:24:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:26,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:24:26,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:24:26,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338064168] [2023-11-21 22:24:26,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338064168] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:24:26,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893569402] [2023-11-21 22:24:26,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:24:26,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:24:26,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c74c-d97f-40b0-9e61-ac2bb7b87d70/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:24:26,747 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c74c-d97f-40b0-9e61-ac2bb7b87d70/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:24:26,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f7c74c-d97f-40b0-9e61-ac2bb7b87d70/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 22:24:27,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:27,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 2956 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:24:27,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:24:27,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:24:27,820 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:24:27,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:24:27,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893569402] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:24:27,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:24:27,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2023-11-21 22:24:27,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809789910] [2023-11-21 22:24:27,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:24:27,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:24:27,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:24:27,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:24:27,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:24:27,978 INFO L87 Difference]: Start difference. First operand 872 states and 1121 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 22:24:30,674 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 [] [2023-11-21 22:24:32,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 22:24:34,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 22:24:36,687 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 []