./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/uudecode-3.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_9d153b8a-233c-418c-bb12-2e096951dca3/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d153b8a-233c-418c-bb12-2e096951dca3/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_9d153b8a-233c-418c-bb12-2e096951dca3/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d153b8a-233c-418c-bb12-2e096951dca3/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/uudecode-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d153b8a-233c-418c-bb12-2e096951dca3/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_9d153b8a-233c-418c-bb12-2e096951dca3/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 2154850b6d364f1580f8bf2aad22ec2a49303ae4d472b3308d218ab5aa05332a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:17:02,586 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:17:02,679 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d153b8a-233c-418c-bb12-2e096951dca3/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-64bit-Automizer_Default.epf [2024-10-31 22:17:02,688 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:17:02,688 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:17:02,725 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:17:02,725 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:17:02,726 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:17:02,726 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:17:02,727 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:17:02,727 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:17:02,728 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:17:02,729 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:17:02,731 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:17:02,731 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:17:02,732 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:17:02,732 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:17:02,732 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:17:02,732 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:17:02,733 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:17:02,733 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:17:02,738 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:17:02,738 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:17:02,738 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-31 22:17:02,739 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:17:02,739 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:17:02,739 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:17:02,739 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:17:02,740 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:17:02,740 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:17:02,740 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:17:02,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:17:02,741 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:17:02,741 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:17:02,742 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:17:02,743 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:17:02,743 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:17:02,743 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:17:02,743 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:17:02,743 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:17:02,743 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:17:02,744 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_9d153b8a-233c-418c-bb12-2e096951dca3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d153b8a-233c-418c-bb12-2e096951dca3/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2154850b6d364f1580f8bf2aad22ec2a49303ae4d472b3308d218ab5aa05332a [2024-10-31 22:17:03,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:17:03,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:17:03,091 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:17:03,092 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:17:03,092 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:17:03,093 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d153b8a-233c-418c-bb12-2e096951dca3/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/busybox-1.22.0/uudecode-3.i Unable to find full path for "g++" [2024-10-31 22:17:05,012 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:17:05,482 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:17:05,483 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d153b8a-233c-418c-bb12-2e096951dca3/sv-benchmarks/c/busybox-1.22.0/uudecode-3.i [2024-10-31 22:17:05,525 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d153b8a-233c-418c-bb12-2e096951dca3/bin/uautomizer-verify-4GaUIPS5ZU/data/12a6ba1c5/135b4f5b3761491182cf0b5a954945b0/FLAGd0de4594f [2024-10-31 22:17:05,594 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d153b8a-233c-418c-bb12-2e096951dca3/bin/uautomizer-verify-4GaUIPS5ZU/data/12a6ba1c5/135b4f5b3761491182cf0b5a954945b0 [2024-10-31 22:17:05,596 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:17:05,598 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:17:05,599 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:17:05,599 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:17:05,604 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:17:05,605 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:17:05" (1/1) ... [2024-10-31 22:17:05,606 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@315577de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:05, skipping insertion in model container [2024-10-31 22:17:05,606 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:17:05" (1/1) ... [2024-10-31 22:17:05,698 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:17:07,654 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:17:07,710 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:17:07,991 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:17:08,337 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:17:08,337 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:08 WrapperNode [2024-10-31 22:17:08,337 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:17:08,339 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:17:08,339 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:17:08,339 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:17:08,349 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:08" (1/1) ... [2024-10-31 22:17:08,468 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:08" (1/1) ... [2024-10-31 22:17:08,692 INFO L138 Inliner]: procedures = 620, calls = 1159, calls flagged for inlining = 35, calls inlined = 32, statements flattened = 2990 [2024-10-31 22:17:08,696 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:17:08,697 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:17:08,697 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:17:08,698 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:17:08,728 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:08" (1/1) ... [2024-10-31 22:17:08,729 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:08" (1/1) ... [2024-10-31 22:17:08,805 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:08" (1/1) ... [2024-10-31 22:17:08,823 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2024-10-31 22:17:08,824 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:08" (1/1) ... [2024-10-31 22:17:08,825 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:08" (1/1) ... [2024-10-31 22:17:08,951 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:08" (1/1) ... [2024-10-31 22:17:08,997 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:08" (1/1) ... [2024-10-31 22:17:09,043 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:08" (1/1) ... [2024-10-31 22:17:09,066 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:08" (1/1) ... [2024-10-31 22:17:09,108 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:17:09,113 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:17:09,113 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:17:09,113 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:17:09,115 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:08" (1/1) ... [2024-10-31 22:17:09,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:17:09,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d153b8a-233c-418c-bb12-2e096951dca3/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:09,211 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d153b8a-233c-418c-bb12-2e096951dca3/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:09,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d153b8a-233c-418c-bb12-2e096951dca3/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:17:09,274 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2024-10-31 22:17:09,275 INFO L138 BoogieDeclarations]: Found implementation of procedure _IO_getc [2024-10-31 22:17:09,275 INFO L130 BoogieDeclarations]: Found specification of procedure xrealloc [2024-10-31 22:17:09,275 INFO L138 BoogieDeclarations]: Found implementation of procedure xrealloc [2024-10-31 22:17:09,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 22:17:09,275 INFO L130 BoogieDeclarations]: Found specification of procedure ret_ERANGE [2024-10-31 22:17:09,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ret_ERANGE [2024-10-31 22:17:09,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2024-10-31 22:17:09,276 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2024-10-31 22:17:09,276 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2024-10-31 22:17:09,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-10-31 22:17:09,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-31 22:17:09,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-31 22:17:09,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:17:09,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-10-31 22:17:09,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:17:09,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:17:09,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2024-10-31 22:17:09,281 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2024-10-31 22:17:09,281 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2024-10-31 22:17:09,281 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2024-10-31 22:17:09,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2024-10-31 22:17:09,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-10-31 22:17:09,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-10-31 22:17:09,282 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-10-31 22:17:09,282 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-31 22:17:09,282 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-31 22:17:09,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-31 22:17:09,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-10-31 22:17:09,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-10-31 22:17:09,283 INFO L130 BoogieDeclarations]: Found specification of procedure bb_ascii_isalnum [2024-10-31 22:17:09,283 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_ascii_isalnum [2024-10-31 22:17:09,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-31 22:17:09,285 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc_fgetline [2024-10-31 22:17:09,285 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc_fgetline [2024-10-31 22:17:09,285 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2024-10-31 22:17:09,285 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2024-10-31 22:17:09,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-31 22:17:09,942 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:17:09,946 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:17:21,597 INFO L? ?]: Removed 911 outVars from TransFormulas that were not future-live. [2024-10-31 22:17:21,598 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:17:21,639 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:17:21,639 INFO L316 CfgBuilder]: Removed 41 assume(true) statements. [2024-10-31 22:17:21,639 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:17:21 BoogieIcfgContainer [2024-10-31 22:17:21,639 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:17:21,646 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:17:21,646 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:17:21,651 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:17:21,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:17:05" (1/3) ... [2024-10-31 22:17:21,652 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f2e1f52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:17:21, skipping insertion in model container [2024-10-31 22:17:21,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:08" (2/3) ... [2024-10-31 22:17:21,654 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f2e1f52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:17:21, skipping insertion in model container [2024-10-31 22:17:21,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:17:21" (3/3) ... [2024-10-31 22:17:21,655 INFO L112 eAbstractionObserver]: Analyzing ICFG uudecode-3.i [2024-10-31 22:17:21,674 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:17:21,674 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 122 error locations. [2024-10-31 22:17:21,773 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:17:21,780 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;@7cb67030, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:17:21,780 INFO L334 AbstractCegarLoop]: Starting to check reachability of 122 error locations. [2024-10-31 22:17:21,788 INFO L276 IsEmpty]: Start isEmpty. Operand has 791 states, 628 states have (on average 1.6863057324840764) internal successors, (1059), 750 states have internal predecessors, (1059), 32 states have call successors, (32), 11 states have call predecessors, (32), 11 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-10-31 22:17:21,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-10-31 22:17:21,796 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:17:21,797 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-10-31 22:17:21,798 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 119 more)] === [2024-10-31 22:17:21,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:21,804 INFO L85 PathProgramCache]: Analyzing trace with hash 6590021, now seen corresponding path program 1 times [2024-10-31 22:17:21,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:21,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410881086] [2024-10-31 22:17:21,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:21,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:25,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:25,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:25,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410881086] [2024-10-31 22:17:25,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410881086] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:25,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:25,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:17:25,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537643534] [2024-10-31 22:17:25,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:25,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:17:25,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:25,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:17:25,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:17:25,572 INFO L87 Difference]: Start difference. First operand has 791 states, 628 states have (on average 1.6863057324840764) internal successors, (1059), 750 states have internal predecessors, (1059), 32 states have call successors, (32), 11 states have call predecessors, (32), 11 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2024-10-31 22:17:25,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:17:25,833 INFO L93 Difference]: Finished difference Result 1552 states and 2235 transitions. [2024-10-31 22:17:25,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:17:25,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2024-10-31 22:17:25,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:17:25,856 INFO L225 Difference]: With dead ends: 1552 [2024-10-31 22:17:25,856 INFO L226 Difference]: Without dead ends: 741 [2024-10-31 22:17:25,862 INFO L431 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 [2024-10-31 22:17:25,866 INFO L432 NwaCegarLoop]: 1018 mSDtfsCounter, 1 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2030 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:17:25,867 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2030 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:17:25,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2024-10-31 22:17:25,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 741. [2024-10-31 22:17:25,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 599 states have (on average 1.5659432387312187) internal successors, (938), 709 states have internal predecessors, (938), 21 states have call successors, (21), 10 states have call predecessors, (21), 10 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-31 22:17:25,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 980 transitions. [2024-10-31 22:17:25,958 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 980 transitions. Word has length 4 [2024-10-31 22:17:25,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:17:25,958 INFO L471 AbstractCegarLoop]: Abstraction has 741 states and 980 transitions. [2024-10-31 22:17:25,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2024-10-31 22:17:25,959 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 980 transitions. [2024-10-31 22:17:25,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-31 22:17:25,959 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:17:25,959 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2024-10-31 22:17:25,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:17:25,960 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 119 more)] === [2024-10-31 22:17:25,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:25,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1244952765, now seen corresponding path program 1 times [2024-10-31 22:17:25,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:25,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119219513] [2024-10-31 22:17:25,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:25,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:28,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:29,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:29,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:29,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119219513] [2024-10-31 22:17:29,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119219513] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:17:29,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776119384] [2024-10-31 22:17:29,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:29,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:17:29,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d153b8a-233c-418c-bb12-2e096951dca3/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:29,505 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d153b8a-233c-418c-bb12-2e096951dca3/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:17:29,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d153b8a-233c-418c-bb12-2e096951dca3/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:17:32,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:32,668 INFO L255 TraceCheckSpWp]: Trace formula consists of 2409 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:17:32,674 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:17:32,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:32,784 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:17:32,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776119384] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:32,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:17:32,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-10-31 22:17:32,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455455811] [2024-10-31 22:17:32,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:32,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:17:32,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:32,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:17:32,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:17:32,791 INFO L87 Difference]: Start difference. First operand 741 states and 980 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2024-10-31 22:17:32,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:17:32,919 INFO L93 Difference]: Finished difference Result 741 states and 980 transitions. [2024-10-31 22:17:32,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:17:32,920 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 [2024-10-31 22:17:32,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:17:32,924 INFO L225 Difference]: With dead ends: 741 [2024-10-31 22:17:32,924 INFO L226 Difference]: Without dead ends: 740 [2024-10-31 22:17:32,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:17:32,926 INFO L432 NwaCegarLoop]: 971 mSDtfsCounter, 1 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1940 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:17:32,930 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1940 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:17:32,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2024-10-31 22:17:32,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 740. [2024-10-31 22:17:32,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 599 states have (on average 1.5642737896494157) internal successors, (937), 708 states have internal predecessors, (937), 21 states have call successors, (21), 10 states have call predecessors, (21), 10 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-31 22:17:32,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 979 transitions. [2024-10-31 22:17:32,969 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 979 transitions. Word has length 7 [2024-10-31 22:17:32,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:17:32,969 INFO L471 AbstractCegarLoop]: Abstraction has 740 states and 979 transitions. [2024-10-31 22:17:32,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2024-10-31 22:17:32,970 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 979 transitions. [2024-10-31 22:17:32,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-31 22:17:32,970 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:17:32,970 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2024-10-31 22:17:32,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d153b8a-233c-418c-bb12-2e096951dca3/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-31 22:17:33,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d153b8a-233c-418c-bb12-2e096951dca3/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:17:33,175 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 119 more)] === [2024-10-31 22:17:33,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:33,175 INFO L85 PathProgramCache]: Analyzing trace with hash 61170178, now seen corresponding path program 1 times [2024-10-31 22:17:33,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:33,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313386023] [2024-10-31 22:17:33,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:33,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms