./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 9bd2c7ff 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_37af6f5e-eab3-4330-80b2-1ac84a9b682f/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37af6f5e-eab3-4330-80b2-1ac84a9b682f/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37af6f5e-eab3-4330-80b2-1ac84a9b682f/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37af6f5e-eab3-4330-80b2-1ac84a9b682f/bin/utaipan-verify-t7M7D8N6sZ/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_37af6f5e-eab3-4330-80b2-1ac84a9b682f/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37af6f5e-eab3-4330-80b2-1ac84a9b682f/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e0ada5a793906a8c21c0c37214d90767529226ee2d6e9139376b7842d17987b9 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:49:53,125 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:49:53,231 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37af6f5e-eab3-4330-80b2-1ac84a9b682f/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-19 04:49:53,238 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:49:53,239 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:49:53,266 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:49:53,267 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:49:53,268 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:49:53,269 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:49:53,270 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:49:53,270 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:49:53,271 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:49:53,272 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:49:53,273 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:49:53,273 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:49:53,274 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:49:53,275 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:49:53,275 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:49:53,276 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:49:53,277 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:49:53,277 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:49:53,278 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:49:53,279 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:49:53,280 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:49:53,280 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:49:53,281 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:49:53,281 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:49:53,282 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:49:53,282 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:49:53,283 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:49:53,284 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:49:53,284 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:49:53,284 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:49:53,285 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:49:53,285 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:49:53,286 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:49:53,286 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:49:53,286 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:49:53,287 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:49:53,287 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:49:53,288 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:49:53,288 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:49:53,289 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:49:53,289 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:49:53,289 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_37af6f5e-eab3-4330-80b2-1ac84a9b682f/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37af6f5e-eab3-4330-80b2-1ac84a9b682f/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0ada5a793906a8c21c0c37214d90767529226ee2d6e9139376b7842d17987b9 [2023-11-19 04:49:53,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:49:53,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:49:53,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:49:53,618 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:49:53,619 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:49:53,620 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37af6f5e-eab3-4330-80b2-1ac84a9b682f/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/busybox-1.22.0/stty-1.i [2023-11-19 04:49:56,786 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:49:57,325 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:49:57,326 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37af6f5e-eab3-4330-80b2-1ac84a9b682f/sv-benchmarks/c/busybox-1.22.0/stty-1.i [2023-11-19 04:49:57,374 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37af6f5e-eab3-4330-80b2-1ac84a9b682f/bin/utaipan-verify-t7M7D8N6sZ/data/b89a186bd/008474bcbea64b37a3b0c4888c787a2d/FLAGb0c96a481 [2023-11-19 04:49:57,393 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37af6f5e-eab3-4330-80b2-1ac84a9b682f/bin/utaipan-verify-t7M7D8N6sZ/data/b89a186bd/008474bcbea64b37a3b0c4888c787a2d [2023-11-19 04:49:57,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:49:57,401 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:49:57,405 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:49:57,405 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:49:57,411 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:49:57,411 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:49:57" (1/1) ... [2023-11-19 04:49:57,412 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b629345 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:57, skipping insertion in model container [2023-11-19 04:49:57,413 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:49:57" (1/1) ... [2023-11-19 04:49:57,550 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:49:59,956 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:50:00,057 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:50:00,477 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:50:00,862 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:50:00,863 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:50:00,863 WARN L675 CHandler]: The function strtoull is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:50:00,863 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:50:00,864 WARN L675 CHandler]: The function output_func is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:50:00,864 WARN L675 CHandler]: The function putchar is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:50:00,864 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:50:00,864 WARN L675 CHandler]: The function fputs is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:50:00,865 WARN L675 CHandler]: The function vsnprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:50:00,865 WARN L675 CHandler]: The function close is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:50:00,876 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:50:00,877 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:00 WrapperNode [2023-11-19 04:50:00,877 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:50:00,879 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:50:00,879 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:50:00,880 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:50:00,890 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:00" (1/1) ... [2023-11-19 04:50:01,021 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:00" (1/1) ... [2023-11-19 04:50:01,227 INFO L138 Inliner]: procedures = 676, calls = 2288, calls flagged for inlining = 37, calls inlined = 35, statements flattened = 4457 [2023-11-19 04:50:01,228 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:50:01,229 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:50:01,229 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:50:01,229 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:50:01,242 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:00" (1/1) ... [2023-11-19 04:50:01,243 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:00" (1/1) ... [2023-11-19 04:50:01,285 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:00" (1/1) ... [2023-11-19 04:50:01,286 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:00" (1/1) ... [2023-11-19 04:50:01,443 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:00" (1/1) ... [2023-11-19 04:50:01,494 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:00" (1/1) ... [2023-11-19 04:50:01,535 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:00" (1/1) ... [2023-11-19 04:50:01,568 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:00" (1/1) ... [2023-11-19 04:50:01,626 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:50:01,628 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:50:01,628 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:50:01,628 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:50:01,629 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:00" (1/1) ... [2023-11-19 04:50:01,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:50:01,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37af6f5e-eab3-4330-80b2-1ac84a9b682f/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:50:01,668 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37af6f5e-eab3-4330-80b2-1ac84a9b682f/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:50:01,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37af6f5e-eab3-4330-80b2-1ac84a9b682f/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:50:01,727 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-11-19 04:50:01,729 INFO L130 BoogieDeclarations]: Found specification of procedure bb_putchar [2023-11-19 04:50:01,729 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_putchar [2023-11-19 04:50:01,729 INFO L130 BoogieDeclarations]: Found specification of procedure fcntl [2023-11-19 04:50:01,729 INFO L138 BoogieDeclarations]: Found implementation of procedure fcntl [2023-11-19 04:50:01,730 INFO L130 BoogieDeclarations]: Found specification of procedure get_terminal_width_height [2023-11-19 04:50:01,730 INFO L138 BoogieDeclarations]: Found implementation of procedure get_terminal_width_height [2023-11-19 04:50:01,730 INFO L130 BoogieDeclarations]: Found specification of procedure close [2023-11-19 04:50:01,730 INFO L130 BoogieDeclarations]: Found specification of procedure set_control_char_or_die [2023-11-19 04:50:01,730 INFO L138 BoogieDeclarations]: Found implementation of procedure set_control_char_or_die [2023-11-19 04:50:01,731 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-19 04:50:01,731 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-19 04:50:01,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:50:01,732 INFO L130 BoogieDeclarations]: Found specification of procedure perror_on_device_and_die [2023-11-19 04:50:01,732 INFO L138 BoogieDeclarations]: Found implementation of procedure perror_on_device_and_die [2023-11-19 04:50:01,732 INFO L130 BoogieDeclarations]: Found specification of procedure set_window_size [2023-11-19 04:50:01,732 INFO L138 BoogieDeclarations]: Found implementation of procedure set_window_size [2023-11-19 04:50:01,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 04:50:01,734 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-19 04:50:01,734 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-19 04:50:01,734 INFO L130 BoogieDeclarations]: Found specification of procedure xatoul_sfx [2023-11-19 04:50:01,735 INFO L138 BoogieDeclarations]: Found implementation of procedure xatoul_sfx [2023-11-19 04:50:01,735 INFO L130 BoogieDeclarations]: Found specification of procedure find_param [2023-11-19 04:50:01,735 INFO L138 BoogieDeclarations]: Found implementation of procedure find_param [2023-11-19 04:50:01,736 INFO L130 BoogieDeclarations]: Found specification of procedure xatoul_range_sfx [2023-11-19 04:50:01,736 INFO L138 BoogieDeclarations]: Found implementation of procedure xatoul_range_sfx [2023-11-19 04:50:01,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 04:50:01,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:50:01,737 INFO L130 BoogieDeclarations]: Found specification of procedure tty_value_to_baud [2023-11-19 04:50:01,737 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_value_to_baud [2023-11-19 04:50:01,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:50:01,738 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2023-11-19 04:50:01,738 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-19 04:50:01,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:50:01,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:50:01,738 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2023-11-19 04:50:01,738 INFO L130 BoogieDeclarations]: Found specification of procedure nth_string [2023-11-19 04:50:01,739 INFO L138 BoogieDeclarations]: Found implementation of procedure nth_string [2023-11-19 04:50:01,739 INFO L130 BoogieDeclarations]: Found specification of procedure find_mode [2023-11-19 04:50:01,739 INFO L138 BoogieDeclarations]: Found implementation of procedure find_mode [2023-11-19 04:50:01,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:50:01,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:50:01,739 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-19 04:50:01,740 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-19 04:50:01,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-19 04:50:01,740 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-19 04:50:01,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 04:50:01,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 04:50:01,740 INFO L130 BoogieDeclarations]: Found specification of procedure display_speed [2023-11-19 04:50:01,740 INFO L138 BoogieDeclarations]: Found implementation of procedure display_speed [2023-11-19 04:50:01,741 INFO L130 BoogieDeclarations]: Found specification of procedure tty_baud_to_value [2023-11-19 04:50:01,741 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_baud_to_value [2023-11-19 04:50:01,741 INFO L130 BoogieDeclarations]: Found specification of procedure bb_perror_msg_and_die [2023-11-19 04:50:01,741 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_perror_msg_and_die [2023-11-19 04:50:01,742 INFO L130 BoogieDeclarations]: Found specification of procedure get_ptr_to_tcflag [2023-11-19 04:50:01,743 INFO L138 BoogieDeclarations]: Found implementation of procedure get_ptr_to_tcflag [2023-11-19 04:50:01,744 INFO L130 BoogieDeclarations]: Found specification of procedure tcgetattr [2023-11-19 04:50:01,744 INFO L138 BoogieDeclarations]: Found implementation of procedure tcgetattr [2023-11-19 04:50:01,744 INFO L130 BoogieDeclarations]: Found specification of procedure recover_mode [2023-11-19 04:50:01,745 INFO L138 BoogieDeclarations]: Found implementation of procedure recover_mode [2023-11-19 04:50:01,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 04:50:01,745 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 04:50:01,745 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 04:50:01,746 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 04:50:01,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:50:01,746 INFO L130 BoogieDeclarations]: Found specification of procedure set_speed_or_die [2023-11-19 04:50:01,747 INFO L138 BoogieDeclarations]: Found implementation of procedure set_speed_or_die [2023-11-19 04:50:01,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:50:01,747 INFO L130 BoogieDeclarations]: Found specification of procedure xstrtoull_range_sfx [2023-11-19 04:50:01,747 INFO L138 BoogieDeclarations]: Found implementation of procedure xstrtoull_range_sfx [2023-11-19 04:50:01,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 04:50:01,747 INFO L130 BoogieDeclarations]: Found specification of procedure ioctl [2023-11-19 04:50:01,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ioctl [2023-11-19 04:50:01,748 INFO L130 BoogieDeclarations]: Found specification of procedure find_control [2023-11-19 04:50:01,748 INFO L138 BoogieDeclarations]: Found implementation of procedure find_control [2023-11-19 04:50:01,748 INFO L130 BoogieDeclarations]: Found specification of procedure xatou [2023-11-19 04:50:01,748 INFO L138 BoogieDeclarations]: Found implementation of procedure xatou [2023-11-19 04:50:01,748 INFO L130 BoogieDeclarations]: Found specification of procedure perror_on_device [2023-11-19 04:50:01,749 INFO L138 BoogieDeclarations]: Found implementation of procedure perror_on_device [2023-11-19 04:50:01,750 INFO L130 BoogieDeclarations]: Found specification of procedure wh_helper [2023-11-19 04:50:01,750 INFO L138 BoogieDeclarations]: Found implementation of procedure wh_helper [2023-11-19 04:50:01,750 INFO L130 BoogieDeclarations]: Found specification of procedure set_mode [2023-11-19 04:50:01,750 INFO L138 BoogieDeclarations]: Found implementation of procedure set_mode [2023-11-19 04:50:01,750 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-11-19 04:50:01,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:50:01,750 INFO L130 BoogieDeclarations]: Found specification of procedure index_in_strings [2023-11-19 04:50:01,752 INFO L138 BoogieDeclarations]: Found implementation of procedure index_in_strings [2023-11-19 04:50:01,752 INFO L130 BoogieDeclarations]: Found specification of procedure newline [2023-11-19 04:50:01,752 INFO L138 BoogieDeclarations]: Found implementation of procedure newline [2023-11-19 04:50:01,752 INFO L130 BoogieDeclarations]: Found specification of procedure wrapf [2023-11-19 04:50:01,752 INFO L138 BoogieDeclarations]: Found implementation of procedure wrapf [2023-11-19 04:50:01,753 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-19 04:50:01,753 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-19 04:50:01,753 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-19 04:50:01,753 INFO L130 BoogieDeclarations]: Found specification of procedure display_window_size [2023-11-19 04:50:01,753 INFO L138 BoogieDeclarations]: Found implementation of procedure display_window_size [2023-11-19 04:50:01,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:50:02,506 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:50:02,509 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:50:07,649 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:50:10,198 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:50:10,211 INFO L302 CfgBuilder]: Removed 31 assume(true) statements. [2023-11-19 04:50:10,233 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:50:10 BoogieIcfgContainer [2023-11-19 04:50:10,239 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:50:10,242 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:50:10,243 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:50:10,247 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:50:10,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:49:57" (1/3) ... [2023-11-19 04:50:10,248 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79e1bbe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:50:10, skipping insertion in model container [2023-11-19 04:50:10,248 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:00" (2/3) ... [2023-11-19 04:50:10,251 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79e1bbe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:50:10, skipping insertion in model container [2023-11-19 04:50:10,252 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:50:10" (3/3) ... [2023-11-19 04:50:10,253 INFO L112 eAbstractionObserver]: Analyzing ICFG stty-1.i [2023-11-19 04:50:10,275 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:50:10,275 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 140 error locations. [2023-11-19 04:50:10,349 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:50:10,357 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;@1a49fab2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:50:10,358 INFO L358 AbstractCegarLoop]: Starting to check reachability of 140 error locations. [2023-11-19 04:50:10,367 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) [2023-11-19 04:50:10,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 04:50:10,375 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:50:10,376 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 04:50:10,376 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)] === [2023-11-19 04:50:10,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:50:10,383 INFO L85 PathProgramCache]: Analyzing trace with hash 3851103, now seen corresponding path program 1 times [2023-11-19 04:50:10,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:50:10,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013006014] [2023-11-19 04:50:10,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:10,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:50:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:50:11,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:50:11,513 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:50:11,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013006014] [2023-11-19 04:50:11,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013006014] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:50:11,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:50:11,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 04:50:11,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259327307] [2023-11-19 04:50:11,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:50:11,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:50:11,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:50:11,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:50:11,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:50:11,588 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) [2023-11-19 04:50:14,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:50:16,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:50:16,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:50:16,662 INFO L93 Difference]: Finished difference Result 1842 states and 2597 transitions. [2023-11-19 04:50:16,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:50:16,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-19 04:50:16,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:50:16,691 INFO L225 Difference]: With dead ends: 1842 [2023-11-19 04:50:16,692 INFO L226 Difference]: Without dead ends: 878 [2023-11-19 04:50:16,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:50:16,715 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 [2023-11-19 04:50:16,716 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] [2023-11-19 04:50:16,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2023-11-19 04:50:16,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2023-11-19 04:50:16,841 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) [2023-11-19 04:50:16,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1127 transitions. [2023-11-19 04:50:16,854 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1127 transitions. Word has length 3 [2023-11-19 04:50:16,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:50:16,855 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1127 transitions. [2023-11-19 04:50:16,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:50:16,856 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1127 transitions. [2023-11-19 04:50:16,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 04:50:16,857 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:50:16,857 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 04:50:16,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:50:16,858 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)] === [2023-11-19 04:50:16,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:50:16,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1233654559, now seen corresponding path program 1 times [2023-11-19 04:50:16,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:50:16,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101628568] [2023-11-19 04:50:16,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:16,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:50:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:50:17,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:50:17,556 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:50:17,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101628568] [2023-11-19 04:50:17,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101628568] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:50:17,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801716560] [2023-11-19 04:50:17,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:17,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:50:17,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37af6f5e-eab3-4330-80b2-1ac84a9b682f/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:50:17,571 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37af6f5e-eab3-4330-80b2-1ac84a9b682f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:50:17,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37af6f5e-eab3-4330-80b2-1ac84a9b682f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:50:18,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:50:18,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 2939 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:50:18,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:50:18,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:50:18,743 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:50:18,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801716560] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:50:18,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:50:18,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-19 04:50:18,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354572876] [2023-11-19 04:50:18,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:50:18,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:50:18,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:50:18,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:50:18,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:50:18,748 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) [2023-11-19 04:50:21,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:50:23,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:50:25,738 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 [] [2023-11-19 04:50:26,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:50:26,247 INFO L93 Difference]: Finished difference Result 878 states and 1127 transitions. [2023-11-19 04:50:26,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:50:26,248 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 04:50:26,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:50:26,258 INFO L225 Difference]: With dead ends: 878 [2023-11-19 04:50:26,259 INFO L226 Difference]: Without dead ends: 877 [2023-11-19 04:50:26,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:50:26,261 INFO L413 NwaCegarLoop]: 1016 mSDtfsCounter, 2 mSDsluCounter, 2032 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s 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, 7.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:50:26,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3048 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 314 Invalid, 3 Unknown, 0 Unchecked, 7.4s Time] [2023-11-19 04:50:26,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2023-11-19 04:50:26,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 877. [2023-11-19 04:50:26,311 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) [2023-11-19 04:50:26,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1126 transitions. [2023-11-19 04:50:26,329 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1126 transitions. Word has length 6 [2023-11-19 04:50:26,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:50:26,329 INFO L495 AbstractCegarLoop]: Abstraction has 877 states and 1126 transitions. [2023-11-19 04:50:26,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:50:26,330 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1126 transitions. [2023-11-19 04:50:26,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 04:50:26,331 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:50:26,331 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-19 04:50:26,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37af6f5e-eab3-4330-80b2-1ac84a9b682f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 04:50:26,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37af6f5e-eab3-4330-80b2-1ac84a9b682f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:50:26,548 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)] === [2023-11-19 04:50:26,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:50:26,548 INFO L85 PathProgramCache]: Analyzing trace with hash 411416604, now seen corresponding path program 1 times [2023-11-19 04:50:26,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:50:26,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453786088] [2023-11-19 04:50:26,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:26,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:50:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:50:27,037 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:50:27,037 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:50:27,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453786088] [2023-11-19 04:50:27,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453786088] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:50:27,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:50:27,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:50:27,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300372299] [2023-11-19 04:50:27,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:50:27,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:50:27,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:50:27,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:50:27,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:50:27,042 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) [2023-11-19 04:50:29,650 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 [] [2023-11-19 04:50:31,665 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 [] [2023-11-19 04:50:31,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:50:31,990 INFO L93 Difference]: Finished difference Result 877 states and 1126 transitions. [2023-11-19 04:50:31,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:50:31,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-19 04:50:31,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:50:31,998 INFO L225 Difference]: With dead ends: 877 [2023-11-19 04:50:31,998 INFO L226 Difference]: Without dead ends: 876 [2023-11-19 04:50:31,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:50:32,000 INFO L413 NwaCegarLoop]: 1016 mSDtfsCounter, 0 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s 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 [2023-11-19 04:50:32,001 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] [2023-11-19 04:50:32,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2023-11-19 04:50:32,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 874. [2023-11-19 04:50:32,039 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) [2023-11-19 04:50:32,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1123 transitions. [2023-11-19 04:50:32,047 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1123 transitions. Word has length 7 [2023-11-19 04:50:32,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:50:32,047 INFO L495 AbstractCegarLoop]: Abstraction has 874 states and 1123 transitions. [2023-11-19 04:50:32,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:50:32,048 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1123 transitions. [2023-11-19 04:50:32,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 04:50:32,049 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:50:32,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:50:32,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 04:50:32,049 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)] === [2023-11-19 04:50:32,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:50:32,050 INFO L85 PathProgramCache]: Analyzing trace with hash -2144597657, now seen corresponding path program 1 times [2023-11-19 04:50:32,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:50:32,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555147152] [2023-11-19 04:50:32,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:32,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:50:32,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:50:32,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:50:32,672 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:50:32,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555147152] [2023-11-19 04:50:32,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555147152] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:50:32,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771941628] [2023-11-19 04:50:32,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:32,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:50:32,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37af6f5e-eab3-4330-80b2-1ac84a9b682f/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:50:32,674 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37af6f5e-eab3-4330-80b2-1ac84a9b682f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:50:32,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37af6f5e-eab3-4330-80b2-1ac84a9b682f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 04:50:33,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:50:33,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 2955 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:50:33,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:50:33,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:50:33,849 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:50:33,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771941628] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:50:33,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:50:33,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 04:50:33,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204806592] [2023-11-19 04:50:33,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:50:33,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:50:33,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:50:33,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:50:33,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:50:33,853 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) [2023-11-19 04:50:36,600 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 [] [2023-11-19 04:50:38,614 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 [] [2023-11-19 04:50:38,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:50:38,917 INFO L93 Difference]: Finished difference Result 874 states and 1123 transitions. [2023-11-19 04:50:38,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:50:38,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-11-19 04:50:38,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:50:38,925 INFO L225 Difference]: With dead ends: 874 [2023-11-19 04:50:38,925 INFO L226 Difference]: Without dead ends: 872 [2023-11-19 04:50:38,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:50:38,927 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 [2023-11-19 04:50:38,929 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] [2023-11-19 04:50:38,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2023-11-19 04:50:38,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 872. [2023-11-19 04:50:38,970 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) [2023-11-19 04:50:38,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1121 transitions. [2023-11-19 04:50:38,978 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1121 transitions. Word has length 9 [2023-11-19 04:50:38,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:50:38,979 INFO L495 AbstractCegarLoop]: Abstraction has 872 states and 1121 transitions. [2023-11-19 04:50:38,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:50:38,980 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1121 transitions. [2023-11-19 04:50:38,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 04:50:38,980 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:50:38,980 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:50:39,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37af6f5e-eab3-4330-80b2-1ac84a9b682f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 04:50:39,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37af6f5e-eab3-4330-80b2-1ac84a9b682f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:50:39,207 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)] === [2023-11-19 04:50:39,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:50:39,208 INFO L85 PathProgramCache]: Analyzing trace with hash -2058015649, now seen corresponding path program 1 times [2023-11-19 04:50:39,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:50:39,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299998969] [2023-11-19 04:50:39,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:39,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:50:39,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:50:39,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:50:39,720 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:50:39,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299998969] [2023-11-19 04:50:39,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299998969] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:50:39,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662099801] [2023-11-19 04:50:39,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:39,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:50:39,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37af6f5e-eab3-4330-80b2-1ac84a9b682f/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:50:39,733 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37af6f5e-eab3-4330-80b2-1ac84a9b682f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:50:39,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37af6f5e-eab3-4330-80b2-1ac84a9b682f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 04:50:40,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:50:40,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 2956 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:50:40,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:50:40,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:50:40,820 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:50:40,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:50:40,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662099801] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:50:40,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [167869291] [2023-11-19 04:50:40,897 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-19 04:50:40,897 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:50:40,900 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:50:40,906 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:50:40,906 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs