./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/stty-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c83cff6-9d61-48b1-9510-2a4922c2b8be/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c83cff6-9d61-48b1-9510-2a4922c2b8be/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c83cff6-9d61-48b1-9510-2a4922c2b8be/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c83cff6-9d61-48b1-9510-2a4922c2b8be/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/stty-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c83cff6-9d61-48b1-9510-2a4922c2b8be/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c83cff6-9d61-48b1-9510-2a4922c2b8be/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 407efb5d110f0d8a5006d45a10a4353022c10a59bc24e54b714ee2eb1689c810 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:13:59,945 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:14:00,077 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c83cff6-9d61-48b1-9510-2a4922c2b8be/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-24 23:14:00,091 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:14:00,092 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:14:00,146 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:14:00,147 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:14:00,147 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:14:00,149 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:14:00,157 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:14:00,157 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:14:00,158 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:14:00,159 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:14:00,161 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:14:00,161 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:14:00,162 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:14:00,162 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:14:00,163 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:14:00,164 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:14:00,164 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:14:00,165 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:14:00,165 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:14:00,167 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:14:00,167 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:14:00,168 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:14:00,168 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:14:00,169 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:14:00,169 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:14:00,170 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:14:00,171 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:14:00,172 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:14:00,172 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:14:00,173 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:14:00,173 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:14:00,174 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:14:00,174 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:14:00,174 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:14:00,175 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:14:00,176 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:14:00,176 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:14:00,176 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:14:00,177 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:14:00,177 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:14:00,178 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:14:00,178 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:14:00,179 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:14:00,179 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_3c83cff6-9d61-48b1-9510-2a4922c2b8be/bin/utaipan-verify-SwPr7d2a91/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c83cff6-9d61-48b1-9510-2a4922c2b8be/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 407efb5d110f0d8a5006d45a10a4353022c10a59bc24e54b714ee2eb1689c810 [2023-11-24 23:14:00,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:14:00,488 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:14:00,492 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:14:00,493 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:14:00,494 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:14:00,496 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c83cff6-9d61-48b1-9510-2a4922c2b8be/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/busybox-1.22.0/stty-2.i [2023-11-24 23:14:03,818 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:14:04,466 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:14:04,466 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c83cff6-9d61-48b1-9510-2a4922c2b8be/sv-benchmarks/c/busybox-1.22.0/stty-2.i [2023-11-24 23:14:04,508 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c83cff6-9d61-48b1-9510-2a4922c2b8be/bin/utaipan-verify-SwPr7d2a91/data/47b5fd8c7/49e4e40664c64e549480171e8d057d46/FLAGd14e21517 [2023-11-24 23:14:04,530 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c83cff6-9d61-48b1-9510-2a4922c2b8be/bin/utaipan-verify-SwPr7d2a91/data/47b5fd8c7/49e4e40664c64e549480171e8d057d46 [2023-11-24 23:14:04,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:14:04,538 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:14:04,540 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:14:04,541 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:14:04,549 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:14:04,550 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:14:04" (1/1) ... [2023-11-24 23:14:04,551 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52f9aa69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:04, skipping insertion in model container [2023-11-24 23:14:04,552 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:14:04" (1/1) ... [2023-11-24 23:14:04,717 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:14:07,209 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:14:07,292 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:14:07,706 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:14:07,999 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:08,000 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:08,000 WARN L675 CHandler]: The function strtoull is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:08,000 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:08,000 WARN L675 CHandler]: The function output_func is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:08,000 WARN L675 CHandler]: The function putchar is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:08,000 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:08,001 WARN L675 CHandler]: The function fputs is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:08,001 WARN L675 CHandler]: The function vsnprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:08,001 WARN L675 CHandler]: The function close is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:08,010 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:14:08,010 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:08 WrapperNode [2023-11-24 23:14:08,011 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:14:08,012 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:14:08,012 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:14:08,012 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:14:08,021 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:08" (1/1) ... [2023-11-24 23:14:08,150 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:08" (1/1) ... [2023-11-24 23:14:08,332 INFO L138 Inliner]: procedures = 676, calls = 2288, calls flagged for inlining = 37, calls inlined = 35, statements flattened = 4473 [2023-11-24 23:14:08,333 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:14:08,334 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:14:08,334 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:14:08,335 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:14:08,347 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:08" (1/1) ... [2023-11-24 23:14:08,347 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:08" (1/1) ... [2023-11-24 23:14:08,385 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:08" (1/1) ... [2023-11-24 23:14:08,385 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:08" (1/1) ... [2023-11-24 23:14:08,599 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:08" (1/1) ... [2023-11-24 23:14:08,629 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:08" (1/1) ... [2023-11-24 23:14:08,667 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:08" (1/1) ... [2023-11-24 23:14:08,703 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:08" (1/1) ... [2023-11-24 23:14:08,754 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:14:08,756 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:14:08,756 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:14:08,757 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:14:08,758 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:08" (1/1) ... [2023-11-24 23:14:08,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:14:08,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c83cff6-9d61-48b1-9510-2a4922c2b8be/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:14:08,795 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c83cff6-9d61-48b1-9510-2a4922c2b8be/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:14:08,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c83cff6-9d61-48b1-9510-2a4922c2b8be/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:14:08,845 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-11-24 23:14:08,845 INFO L130 BoogieDeclarations]: Found specification of procedure bb_putchar [2023-11-24 23:14:08,845 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_putchar [2023-11-24 23:14:08,845 INFO L130 BoogieDeclarations]: Found specification of procedure fcntl [2023-11-24 23:14:08,845 INFO L138 BoogieDeclarations]: Found implementation of procedure fcntl [2023-11-24 23:14:08,846 INFO L130 BoogieDeclarations]: Found specification of procedure get_terminal_width_height [2023-11-24 23:14:08,846 INFO L138 BoogieDeclarations]: Found implementation of procedure get_terminal_width_height [2023-11-24 23:14:08,846 INFO L130 BoogieDeclarations]: Found specification of procedure close [2023-11-24 23:14:08,846 INFO L130 BoogieDeclarations]: Found specification of procedure set_control_char_or_die [2023-11-24 23:14:08,846 INFO L138 BoogieDeclarations]: Found implementation of procedure set_control_char_or_die [2023-11-24 23:14:08,846 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-24 23:14:08,847 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-24 23:14:08,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:14:08,847 INFO L130 BoogieDeclarations]: Found specification of procedure perror_on_device_and_die [2023-11-24 23:14:08,847 INFO L138 BoogieDeclarations]: Found implementation of procedure perror_on_device_and_die [2023-11-24 23:14:08,847 INFO L130 BoogieDeclarations]: Found specification of procedure set_window_size [2023-11-24 23:14:08,847 INFO L138 BoogieDeclarations]: Found implementation of procedure set_window_size [2023-11-24 23:14:08,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-24 23:14:08,848 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-24 23:14:08,848 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-24 23:14:08,848 INFO L130 BoogieDeclarations]: Found specification of procedure xatoul_sfx [2023-11-24 23:14:08,848 INFO L138 BoogieDeclarations]: Found implementation of procedure xatoul_sfx [2023-11-24 23:14:08,848 INFO L130 BoogieDeclarations]: Found specification of procedure find_param [2023-11-24 23:14:08,848 INFO L138 BoogieDeclarations]: Found implementation of procedure find_param [2023-11-24 23:14:08,848 INFO L130 BoogieDeclarations]: Found specification of procedure xatoul_range_sfx [2023-11-24 23:14:08,849 INFO L138 BoogieDeclarations]: Found implementation of procedure xatoul_range_sfx [2023-11-24 23:14:08,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-24 23:14:08,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:14:08,849 INFO L130 BoogieDeclarations]: Found specification of procedure tty_value_to_baud [2023-11-24 23:14:08,849 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_value_to_baud [2023-11-24 23:14:08,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:14:08,849 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2023-11-24 23:14:08,850 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-24 23:14:08,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:14:08,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:14:08,850 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2023-11-24 23:14:08,850 INFO L130 BoogieDeclarations]: Found specification of procedure nth_string [2023-11-24 23:14:08,850 INFO L138 BoogieDeclarations]: Found implementation of procedure nth_string [2023-11-24 23:14:08,850 INFO L130 BoogieDeclarations]: Found specification of procedure find_mode [2023-11-24 23:14:08,851 INFO L138 BoogieDeclarations]: Found implementation of procedure find_mode [2023-11-24 23:14:08,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:14:08,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:14:08,851 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-24 23:14:08,851 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-24 23:14:08,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-24 23:14:08,852 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-24 23:14:08,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-24 23:14:08,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-24 23:14:08,852 INFO L130 BoogieDeclarations]: Found specification of procedure display_speed [2023-11-24 23:14:08,852 INFO L138 BoogieDeclarations]: Found implementation of procedure display_speed [2023-11-24 23:14:08,852 INFO L130 BoogieDeclarations]: Found specification of procedure tty_baud_to_value [2023-11-24 23:14:08,852 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_baud_to_value [2023-11-24 23:14:08,853 INFO L130 BoogieDeclarations]: Found specification of procedure bb_perror_msg_and_die [2023-11-24 23:14:08,853 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_perror_msg_and_die [2023-11-24 23:14:08,853 INFO L130 BoogieDeclarations]: Found specification of procedure get_ptr_to_tcflag [2023-11-24 23:14:08,853 INFO L138 BoogieDeclarations]: Found implementation of procedure get_ptr_to_tcflag [2023-11-24 23:14:08,853 INFO L130 BoogieDeclarations]: Found specification of procedure tcgetattr [2023-11-24 23:14:08,853 INFO L138 BoogieDeclarations]: Found implementation of procedure tcgetattr [2023-11-24 23:14:08,853 INFO L130 BoogieDeclarations]: Found specification of procedure recover_mode [2023-11-24 23:14:08,853 INFO L138 BoogieDeclarations]: Found implementation of procedure recover_mode [2023-11-24 23:14:08,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-24 23:14:08,854 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-24 23:14:08,854 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:14:08,854 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:14:08,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:14:08,854 INFO L130 BoogieDeclarations]: Found specification of procedure set_speed_or_die [2023-11-24 23:14:08,854 INFO L138 BoogieDeclarations]: Found implementation of procedure set_speed_or_die [2023-11-24 23:14:08,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:14:08,855 INFO L130 BoogieDeclarations]: Found specification of procedure xstrtoull_range_sfx [2023-11-24 23:14:08,855 INFO L138 BoogieDeclarations]: Found implementation of procedure xstrtoull_range_sfx [2023-11-24 23:14:08,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:14:08,855 INFO L130 BoogieDeclarations]: Found specification of procedure ioctl [2023-11-24 23:14:08,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ioctl [2023-11-24 23:14:08,855 INFO L130 BoogieDeclarations]: Found specification of procedure find_control [2023-11-24 23:14:08,856 INFO L138 BoogieDeclarations]: Found implementation of procedure find_control [2023-11-24 23:14:08,856 INFO L130 BoogieDeclarations]: Found specification of procedure xatou [2023-11-24 23:14:08,856 INFO L138 BoogieDeclarations]: Found implementation of procedure xatou [2023-11-24 23:14:08,856 INFO L130 BoogieDeclarations]: Found specification of procedure perror_on_device [2023-11-24 23:14:08,856 INFO L138 BoogieDeclarations]: Found implementation of procedure perror_on_device [2023-11-24 23:14:08,856 INFO L130 BoogieDeclarations]: Found specification of procedure wh_helper [2023-11-24 23:14:08,856 INFO L138 BoogieDeclarations]: Found implementation of procedure wh_helper [2023-11-24 23:14:08,857 INFO L130 BoogieDeclarations]: Found specification of procedure set_mode [2023-11-24 23:14:08,857 INFO L138 BoogieDeclarations]: Found implementation of procedure set_mode [2023-11-24 23:14:08,857 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-11-24 23:14:08,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:14:08,857 INFO L130 BoogieDeclarations]: Found specification of procedure index_in_strings [2023-11-24 23:14:08,857 INFO L138 BoogieDeclarations]: Found implementation of procedure index_in_strings [2023-11-24 23:14:08,857 INFO L130 BoogieDeclarations]: Found specification of procedure newline [2023-11-24 23:14:08,858 INFO L138 BoogieDeclarations]: Found implementation of procedure newline [2023-11-24 23:14:08,858 INFO L130 BoogieDeclarations]: Found specification of procedure wrapf [2023-11-24 23:14:08,858 INFO L138 BoogieDeclarations]: Found implementation of procedure wrapf [2023-11-24 23:14:08,858 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-24 23:14:08,858 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-24 23:14:08,858 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-24 23:14:08,858 INFO L130 BoogieDeclarations]: Found specification of procedure display_window_size [2023-11-24 23:14:08,858 INFO L138 BoogieDeclarations]: Found implementation of procedure display_window_size [2023-11-24 23:14:08,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:14:09,569 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:14:09,575 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:14:15,079 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:14:17,765 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:14:17,766 INFO L309 CfgBuilder]: Removed 31 assume(true) statements. [2023-11-24 23:14:17,769 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:14:17 BoogieIcfgContainer [2023-11-24 23:14:17,769 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:14:17,773 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:14:17,774 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:14:17,778 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:14:17,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:14:04" (1/3) ... [2023-11-24 23:14:17,781 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f690004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:14:17, skipping insertion in model container [2023-11-24 23:14:17,781 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:08" (2/3) ... [2023-11-24 23:14:17,783 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f690004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:14:17, skipping insertion in model container [2023-11-24 23:14:17,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:14:17" (3/3) ... [2023-11-24 23:14:17,785 INFO L112 eAbstractionObserver]: Analyzing ICFG stty-2.i [2023-11-24 23:14:17,811 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:14:17,811 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 132 error locations. [2023-11-24 23:14:17,902 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:14:17,910 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;@16a65a80, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:14:17,911 INFO L358 AbstractCegarLoop]: Starting to check reachability of 132 error locations. [2023-11-24 23:14:17,922 INFO L276 IsEmpty]: Start isEmpty. Operand has 918 states, 602 states have (on average 1.606312292358804) internal successors, (967), 776 states have internal predecessors, (967), 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) [2023-11-24 23:14:17,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 23:14:17,932 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:14:17,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-24 23:14:17,934 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 130 more)] === [2023-11-24 23:14:17,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:14:17,941 INFO L85 PathProgramCache]: Analyzing trace with hash 3864045, now seen corresponding path program 1 times [2023-11-24 23:14:17,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:14:17,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869464551] [2023-11-24 23:14:17,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:17,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:14:18,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:14:19,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:14:19,200 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:14:19,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869464551] [2023-11-24 23:14:19,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869464551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:14:19,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:14:19,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 23:14:19,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359038344] [2023-11-24 23:14:19,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:14:19,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:14:19,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:14:19,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:14:19,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:14:19,278 INFO L87 Difference]: Start difference. First operand has 918 states, 602 states have (on average 1.606312292358804) internal successors, (967), 776 states have internal predecessors, (967), 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) [2023-11-24 23:14:22,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:14:24,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:14:24,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:14:24,381 INFO L93 Difference]: Finished difference Result 1811 states and 2566 transitions. [2023-11-24 23:14:24,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:14:24,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-24 23:14:24,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:14:24,419 INFO L225 Difference]: With dead ends: 1811 [2023-11-24 23:14:24,419 INFO L226 Difference]: Without dead ends: 862 [2023-11-24 23:14:24,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:14:24,440 INFO L413 NwaCegarLoop]: 1066 mSDtfsCounter, 1 mSDsluCounter, 1064 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2130 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:14:24,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2130 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 213 Invalid, 2 Unknown, 0 Unchecked, 5.0s Time] [2023-11-24 23:14:24,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2023-11-24 23:14:24,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 862. [2023-11-24 23:14:24,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 584 states have (on average 1.5393835616438356) internal successors, (899), 739 states have internal predecessors, (899), 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) [2023-11-24 23:14:24,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1111 transitions. [2023-11-24 23:14:24,573 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1111 transitions. Word has length 3 [2023-11-24 23:14:24,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:14:24,574 INFO L495 AbstractCegarLoop]: Abstraction has 862 states and 1111 transitions. [2023-11-24 23:14:24,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:14:24,575 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1111 transitions. [2023-11-24 23:14:24,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 23:14:24,576 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:14:24,576 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-24 23:14:24,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:14:24,577 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 130 more)] === [2023-11-24 23:14:24,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:14:24,578 INFO L85 PathProgramCache]: Analyzing trace with hash -848115325, now seen corresponding path program 1 times [2023-11-24 23:14:24,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:14:24,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370438472] [2023-11-24 23:14:24,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:24,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:14:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:14:25,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:14:25,527 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:14:25,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370438472] [2023-11-24 23:14:25,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370438472] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:14:25,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060705176] [2023-11-24 23:14:25,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:25,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:14:25,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c83cff6-9d61-48b1-9510-2a4922c2b8be/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:14:25,540 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c83cff6-9d61-48b1-9510-2a4922c2b8be/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:14:25,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c83cff6-9d61-48b1-9510-2a4922c2b8be/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:14:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:14:26,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 2939 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:14:26,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:14:27,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:14:27,060 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:14:27,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060705176] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:14:27,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:14:27,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-24 23:14:27,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818002252] [2023-11-24 23:14:27,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:14:27,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:14:27,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:14:27,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:14:27,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:14:27,066 INFO L87 Difference]: Start difference. First operand 862 states and 1111 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:14:30,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:14:32,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:14:34,060 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 [] [2023-11-24 23:14:34,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:14:34,403 INFO L93 Difference]: Finished difference Result 862 states and 1111 transitions. [2023-11-24 23:14:34,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:14:34,404 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-24 23:14:34,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:14:34,413 INFO L225 Difference]: With dead ends: 862 [2023-11-24 23:14:34,413 INFO L226 Difference]: Without dead ends: 861 [2023-11-24 23:14:34,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:14:34,416 INFO L413 NwaCegarLoop]: 1000 mSDtfsCounter, 3 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2000 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:14:34,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2000 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 213 Invalid, 3 Unknown, 0 Unchecked, 7.3s Time] [2023-11-24 23:14:34,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2023-11-24 23:14:34,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2023-11-24 23:14:34,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 584 states have (on average 1.5376712328767124) internal successors, (898), 738 states have internal predecessors, (898), 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) [2023-11-24 23:14:34,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1110 transitions. [2023-11-24 23:14:34,473 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1110 transitions. Word has length 6 [2023-11-24 23:14:34,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:14:34,473 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 1110 transitions. [2023-11-24 23:14:34,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:14:34,474 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1110 transitions. [2023-11-24 23:14:34,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:14:34,475 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:14:34,475 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-24 23:14:34,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c83cff6-9d61-48b1-9510-2a4922c2b8be/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:14:34,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c83cff6-9d61-48b1-9510-2a4922c2b8be/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:14:34,690 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 130 more)] === [2023-11-24 23:14:34,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:14:34,690 INFO L85 PathProgramCache]: Analyzing trace with hash -521769046, now seen corresponding path program 1 times [2023-11-24 23:14:34,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:14:34,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236968537] [2023-11-24 23:14:34,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:34,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:14:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:14:35,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:14:35,171 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:14:35,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236968537] [2023-11-24 23:14:35,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236968537] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:14:35,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:14:35,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:14:35,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861680676] [2023-11-24 23:14:35,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:14:35,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:14:35,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:14:35,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:14:35,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:14:35,177 INFO L87 Difference]: Start difference. First operand 861 states and 1110 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:14:37,921 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 [] [2023-11-24 23:14:39,925 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 [] [2023-11-24 23:14:40,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:14:40,236 INFO L93 Difference]: Finished difference Result 861 states and 1110 transitions. [2023-11-24 23:14:40,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:14:40,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-24 23:14:40,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:14:40,244 INFO L225 Difference]: With dead ends: 861 [2023-11-24 23:14:40,244 INFO L226 Difference]: Without dead ends: 860 [2023-11-24 23:14:40,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:14:40,249 INFO L413 NwaCegarLoop]: 1000 mSDtfsCounter, 0 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2000 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:14:40,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2000 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 207 Invalid, 2 Unknown, 0 Unchecked, 5.0s Time] [2023-11-24 23:14:40,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2023-11-24 23:14:40,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 858. [2023-11-24 23:14:40,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 582 states have (on average 1.5378006872852235) internal successors, (895), 735 states have internal predecessors, (895), 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) [2023-11-24 23:14:40,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1107 transitions. [2023-11-24 23:14:40,317 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1107 transitions. Word has length 7 [2023-11-24 23:14:40,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:14:40,320 INFO L495 AbstractCegarLoop]: Abstraction has 858 states and 1107 transitions. [2023-11-24 23:14:40,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:14:40,321 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1107 transitions. [2023-11-24 23:14:40,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 23:14:40,321 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:14:40,322 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:14:40,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:14:40,322 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 130 more)] === [2023-11-24 23:14:40,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:14:40,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1286888651, now seen corresponding path program 1 times [2023-11-24 23:14:40,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:14:40,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485871319] [2023-11-24 23:14:40,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:40,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:14:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:14:41,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:14:41,068 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:14:41,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485871319] [2023-11-24 23:14:41,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485871319] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:14:41,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893972067] [2023-11-24 23:14:41,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:41,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:14:41,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c83cff6-9d61-48b1-9510-2a4922c2b8be/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:14:41,073 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c83cff6-9d61-48b1-9510-2a4922c2b8be/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:14:41,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c83cff6-9d61-48b1-9510-2a4922c2b8be/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:14:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:14:42,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 2955 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:14:42,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:14:42,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:14:42,259 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:14:42,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893972067] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:14:42,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:14:42,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-24 23:14:42,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622248603] [2023-11-24 23:14:42,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:14:42,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:14:42,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:14:42,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:14:42,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:14:42,261 INFO L87 Difference]: Start difference. First operand 858 states and 1107 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:14:45,038 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 [] [2023-11-24 23:14:47,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:14:47,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:14:47,322 INFO L93 Difference]: Finished difference Result 858 states and 1107 transitions. [2023-11-24 23:14:47,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:14:47,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-11-24 23:14:47,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:14:47,330 INFO L225 Difference]: With dead ends: 858 [2023-11-24 23:14:47,330 INFO L226 Difference]: Without dead ends: 856 [2023-11-24 23:14:47,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:14:47,332 INFO L413 NwaCegarLoop]: 993 mSDtfsCounter, 395 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 1580 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 [2023-11-24 23:14:47,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 1580 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 174 Invalid, 2 Unknown, 0 Unchecked, 5.0s Time] [2023-11-24 23:14:47,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2023-11-24 23:14:47,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 856. [2023-11-24 23:14:47,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 582 states have (on average 1.534364261168385) internal successors, (893), 733 states have internal predecessors, (893), 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) [2023-11-24 23:14:47,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1105 transitions. [2023-11-24 23:14:47,375 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1105 transitions. Word has length 9 [2023-11-24 23:14:47,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:14:47,376 INFO L495 AbstractCegarLoop]: Abstraction has 856 states and 1105 transitions. [2023-11-24 23:14:47,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:14:47,377 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1105 transitions. [2023-11-24 23:14:47,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 23:14:47,377 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:14:47,378 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:14:47,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c83cff6-9d61-48b1-9510-2a4922c2b8be/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:14:47,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c83cff6-9d61-48b1-9510-2a4922c2b8be/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-24 23:14:47,591 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 130 more)] === [2023-11-24 23:14:47,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:14:47,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1238840255, now seen corresponding path program 1 times [2023-11-24 23:14:47,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:14:47,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130154442] [2023-11-24 23:14:47,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:47,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:14:47,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:14:48,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:14:48,209 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:14:48,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130154442] [2023-11-24 23:14:48,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130154442] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:14:48,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992956989] [2023-11-24 23:14:48,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:48,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:14:48,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c83cff6-9d61-48b1-9510-2a4922c2b8be/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:14:48,212 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c83cff6-9d61-48b1-9510-2a4922c2b8be/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:14:48,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c83cff6-9d61-48b1-9510-2a4922c2b8be/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:14:49,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:14:49,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 2956 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:14:49,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:14:49,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:14:49,311 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:14:49,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:14:49,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992956989] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:14:49,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [664718793] [2023-11-24 23:14:49,369 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-24 23:14:49,369 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:14:49,373 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:14:49,378 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:14:49,378 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs