./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/tee-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70098dd4-6b20-4e8a-b367-df77de31f2fa/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70098dd4-6b20-4e8a-b367-df77de31f2fa/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70098dd4-6b20-4e8a-b367-df77de31f2fa/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70098dd4-6b20-4e8a-b367-df77de31f2fa/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/tee-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70098dd4-6b20-4e8a-b367-df77de31f2fa/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70098dd4-6b20-4e8a-b367-df77de31f2fa/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash bab52eb5923c15e4bc9c70f58b3e07f531d9c2f4fa12be32117f6f5f5ee2181e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:09:42,788 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:09:42,899 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70098dd4-6b20-4e8a-b367-df77de31f2fa/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-64bit-Automizer_Default.epf [2024-10-31 22:09:42,907 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:09:42,908 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:09:42,941 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:09:42,941 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:09:42,941 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:09:42,943 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:09:42,945 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:09:42,945 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:09:42,945 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:09:42,946 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:09:42,946 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:09:42,946 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:09:42,947 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:09:42,947 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:09:42,947 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:09:42,948 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:09:42,951 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:09:42,953 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:09:42,953 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:09:42,953 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:09:42,954 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-31 22:09:42,954 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:09:42,954 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:09:42,954 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:09:42,955 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:09:42,955 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:09:42,955 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:09:42,955 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:09:42,955 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:09:42,956 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:09:42,956 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:09:42,956 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:09:42,956 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:09:42,957 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:09:42,957 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:09:42,959 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:09:42,959 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:09:42,959 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:09:42,960 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70098dd4-6b20-4e8a-b367-df77de31f2fa/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70098dd4-6b20-4e8a-b367-df77de31f2fa/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bab52eb5923c15e4bc9c70f58b3e07f531d9c2f4fa12be32117f6f5f5ee2181e [2024-10-31 22:09:43,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:09:43,389 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:09:43,394 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:09:43,396 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:09:43,396 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:09:43,398 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70098dd4-6b20-4e8a-b367-df77de31f2fa/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/busybox-1.22.0/tee-2.i Unable to find full path for "g++" [2024-10-31 22:09:45,619 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:09:46,042 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:09:46,042 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70098dd4-6b20-4e8a-b367-df77de31f2fa/sv-benchmarks/c/busybox-1.22.0/tee-2.i [2024-10-31 22:09:46,083 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70098dd4-6b20-4e8a-b367-df77de31f2fa/bin/uautomizer-verify-4GaUIPS5ZU/data/4d50587a8/3c6ccf8396e04f07b77034aa52d60cbf/FLAGdda7b21b8 [2024-10-31 22:09:46,102 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70098dd4-6b20-4e8a-b367-df77de31f2fa/bin/uautomizer-verify-4GaUIPS5ZU/data/4d50587a8/3c6ccf8396e04f07b77034aa52d60cbf [2024-10-31 22:09:46,106 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:09:46,107 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:09:46,110 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:09:46,110 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:09:46,116 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:09:46,117 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:09:46" (1/1) ... [2024-10-31 22:09:46,118 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fa6201e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:46, skipping insertion in model container [2024-10-31 22:09:46,118 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:09:46" (1/1) ... [2024-10-31 22:09:46,208 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:09:47,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:09:47,870 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:09:48,018 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:09:48,501 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:09:48,502 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:48 WrapperNode [2024-10-31 22:09:48,503 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:09:48,504 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:09:48,504 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:09:48,504 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:09:48,512 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:48" (1/1) ... [2024-10-31 22:09:48,677 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:48" (1/1) ... [2024-10-31 22:09:49,280 INFO L138 Inliner]: procedures = 575, calls = 8953, calls flagged for inlining = 28, calls inlined = 26, statements flattened = 10298 [2024-10-31 22:09:49,280 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:09:49,281 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:09:49,281 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:09:49,281 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:09:49,294 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:48" (1/1) ... [2024-10-31 22:09:49,294 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:48" (1/1) ... [2024-10-31 22:09:49,459 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:48" (1/1) ... [2024-10-31 22:09:49,476 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2024-10-31 22:09:49,480 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:48" (1/1) ... [2024-10-31 22:09:49,480 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:48" (1/1) ... [2024-10-31 22:09:49,710 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:48" (1/1) ... [2024-10-31 22:09:49,728 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:48" (1/1) ... [2024-10-31 22:09:49,758 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:48" (1/1) ... [2024-10-31 22:09:49,774 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:48" (1/1) ... [2024-10-31 22:09:49,811 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:09:49,812 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:09:49,812 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:09:49,812 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:09:49,813 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:48" (1/1) ... [2024-10-31 22:09:49,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:09:49,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70098dd4-6b20-4e8a-b367-df77de31f2fa/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:49,853 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70098dd4-6b20-4e8a-b367-df77de31f2fa/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:49,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70098dd4-6b20-4e8a-b367-df77de31f2fa/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:09:49,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 22:09:49,895 INFO L130 BoogieDeclarations]: Found specification of procedure xzalloc [2024-10-31 22:09:49,895 INFO L138 BoogieDeclarations]: Found implementation of procedure xzalloc [2024-10-31 22:09:49,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2024-10-31 22:09:49,896 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2024-10-31 22:09:49,896 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2024-10-31 22:09:49,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-10-31 22:09:49,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-31 22:09:49,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-31 22:09:49,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:09:49,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-10-31 22:09:49,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:09:49,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:09:49,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2024-10-31 22:09:49,899 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2024-10-31 22:09:49,899 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2024-10-31 22:09:49,900 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2024-10-31 22:09:49,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2024-10-31 22:09:49,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-10-31 22:09:49,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-10-31 22:09:49,900 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-10-31 22:09:49,901 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-31 22:09:49,901 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-31 22:09:49,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-31 22:09:49,901 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-10-31 22:09:49,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-10-31 22:09:49,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-31 22:09:49,902 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2024-10-31 22:09:49,903 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2024-10-31 22:09:49,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-31 22:09:50,423 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:09:50,426 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:10:17,931 INFO L? ?]: Removed 630 outVars from TransFormulas that were not future-live. [2024-10-31 22:10:17,931 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:10:17,968 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:10:17,968 INFO L316 CfgBuilder]: Removed 34 assume(true) statements. [2024-10-31 22:10:17,969 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:10:17 BoogieIcfgContainer [2024-10-31 22:10:17,969 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:10:17,971 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:10:17,971 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:10:17,977 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:10:17,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:09:46" (1/3) ... [2024-10-31 22:10:17,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a81b220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:10:17, skipping insertion in model container [2024-10-31 22:10:17,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:48" (2/3) ... [2024-10-31 22:10:17,979 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a81b220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:10:17, skipping insertion in model container [2024-10-31 22:10:17,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:10:17" (3/3) ... [2024-10-31 22:10:17,980 INFO L112 eAbstractionObserver]: Analyzing ICFG tee-2.i [2024-10-31 22:10:18,000 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:10:18,000 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 68 error locations. [2024-10-31 22:10:18,094 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:10:18,102 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@724b9bfc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:10:18,103 INFO L334 AbstractCegarLoop]: Starting to check reachability of 68 error locations. [2024-10-31 22:10:18,111 INFO L276 IsEmpty]: Start isEmpty. Operand has 541 states, 440 states have (on average 1.6704545454545454) internal successors, (735), 510 states have internal predecessors, (735), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-31 22:10:18,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-10-31 22:10:18,120 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:10:18,121 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-10-31 22:10:18,122 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2024-10-31 22:10:18,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:18,129 INFO L85 PathProgramCache]: Analyzing trace with hash 10345669, now seen corresponding path program 1 times [2024-10-31 22:10:18,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:18,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450328214] [2024-10-31 22:10:18,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:18,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms