./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 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_da51b053-2157-4d5d-84f6-22a7d192377c/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da51b053-2157-4d5d-84f6-22a7d192377c/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da51b053-2157-4d5d-84f6-22a7d192377c/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da51b053-2157-4d5d-84f6-22a7d192377c/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da51b053-2157-4d5d-84f6-22a7d192377c/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da51b053-2157-4d5d-84f6-22a7d192377c/bin/uautomizer-verify-zZY32mL2XJ --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 d1800e6a7093aef170e24bf50f0eb7e2646af9a10c241229886d0a1c02e7e0dd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:42:56,231 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:42:56,349 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da51b053-2157-4d5d-84f6-22a7d192377c/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-23 21:42:56,358 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:42:56,359 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:42:56,402 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:42:56,402 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:42:56,403 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:42:56,404 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 21:42:56,409 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 21:42:56,410 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:42:56,411 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:42:56,412 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:42:56,413 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:42:56,414 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 21:42:56,414 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:42:56,415 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:42:56,415 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:42:56,416 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:42:56,416 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:42:56,416 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:42:56,417 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:42:56,419 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 21:42:56,419 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:42:56,420 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:42:56,420 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:42:56,421 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:42:56,422 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:42:56,422 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:42:56,422 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:42:56,424 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:42:56,424 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:42:56,424 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:42:56,425 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:42:56,425 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 21:42:56,425 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:42:56,425 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:42:56,426 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 21:42:56,426 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:42:56,426 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 21:42:56,426 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:42:56,427 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_da51b053-2157-4d5d-84f6-22a7d192377c/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da51b053-2157-4d5d-84f6-22a7d192377c/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d1800e6a7093aef170e24bf50f0eb7e2646af9a10c241229886d0a1c02e7e0dd [2023-11-23 21:42:56,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:42:56,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:42:56,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:42:56,782 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:42:56,783 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:42:56,784 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da51b053-2157-4d5d-84f6-22a7d192377c/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i [2023-11-23 21:43:00,007 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:43:00,587 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:43:00,588 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da51b053-2157-4d5d-84f6-22a7d192377c/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-2.i [2023-11-23 21:43:00,637 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da51b053-2157-4d5d-84f6-22a7d192377c/bin/uautomizer-verify-zZY32mL2XJ/data/3269966f7/c6c1cf645ca142dea162fda7988c924b/FLAGeeeec6c4f [2023-11-23 21:43:00,656 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da51b053-2157-4d5d-84f6-22a7d192377c/bin/uautomizer-verify-zZY32mL2XJ/data/3269966f7/c6c1cf645ca142dea162fda7988c924b [2023-11-23 21:43:00,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:43:00,664 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:43:00,666 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:43:00,666 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:43:00,672 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:43:00,675 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:43:00" (1/1) ... [2023-11-23 21:43:00,677 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59fa3e52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:00, skipping insertion in model container [2023-11-23 21:43:00,677 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:43:00" (1/1) ... [2023-11-23 21:43:00,810 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:43:03,602 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:43:03,658 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:43:03,936 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:43:04,466 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:43:04,497 WARN L675 CHandler]: The function x2x_utoa is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:43:04,497 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:43:04,497 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:43:04,498 WARN L675 CHandler]: The function strncmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:43:04,498 WARN L675 CHandler]: The function strstr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:43:04,498 WARN L675 CHandler]: The function strrchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:43:04,498 WARN L675 CHandler]: The function putchar is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:43:04,498 WARN L675 CHandler]: The function strncpy is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:43:04,498 WARN L675 CHandler]: The function fputs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:43:04,499 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:43:04,499 WARN L675 CHandler]: The function ctime is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:43:04,499 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:43:04,508 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:43:04,509 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:04 WrapperNode [2023-11-23 21:43:04,509 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:43:04,510 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:43:04,511 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:43:04,511 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:43:04,520 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:04" (1/1) ... [2023-11-23 21:43:04,683 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:04" (1/1) ... [2023-11-23 21:43:04,915 INFO L138 Inliner]: procedures = 743, calls = 1285, calls flagged for inlining = 67, calls inlined = 65, statements flattened = 4660 [2023-11-23 21:43:04,916 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:43:04,917 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:43:04,917 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:43:04,918 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:43:04,931 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:04" (1/1) ... [2023-11-23 21:43:04,932 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:04" (1/1) ... [2023-11-23 21:43:04,961 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:04" (1/1) ... [2023-11-23 21:43:04,988 WARN L107 HeapSplitter]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2023-11-23 21:43:04,989 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:04" (1/1) ... [2023-11-23 21:43:04,990 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:04" (1/1) ... [2023-11-23 21:43:05,138 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:04" (1/1) ... [2023-11-23 21:43:05,205 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:04" (1/1) ... [2023-11-23 21:43:05,231 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:04" (1/1) ... [2023-11-23 21:43:05,260 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:04" (1/1) ... [2023-11-23 21:43:05,316 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:43:05,317 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:43:05,317 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:43:05,318 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:43:05,319 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:04" (1/1) ... [2023-11-23 21:43:05,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:43:05,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da51b053-2157-4d5d-84f6-22a7d192377c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:43:05,358 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da51b053-2157-4d5d-84f6-22a7d192377c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:43:05,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da51b053-2157-4d5d-84f6-22a7d192377c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:43:05,402 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2023-11-23 21:43:05,402 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-11-23 21:43:05,402 INFO L130 BoogieDeclarations]: Found specification of procedure ctime [2023-11-23 21:43:05,402 INFO L130 BoogieDeclarations]: Found specification of procedure get_cached [2023-11-23 21:43:05,403 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cached [2023-11-23 21:43:05,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2023-11-23 21:43:05,403 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2023-11-23 21:43:05,403 INFO L130 BoogieDeclarations]: Found specification of procedure vasprintf [2023-11-23 21:43:05,403 INFO L138 BoogieDeclarations]: Found implementation of procedure vasprintf [2023-11-23 21:43:05,404 INFO L130 BoogieDeclarations]: Found specification of procedure utoa [2023-11-23 21:43:05,404 INFO L138 BoogieDeclarations]: Found implementation of procedure utoa [2023-11-23 21:43:05,404 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-23 21:43:05,404 INFO L130 BoogieDeclarations]: Found specification of procedure print_name [2023-11-23 21:43:05,404 INFO L138 BoogieDeclarations]: Found implementation of procedure print_name [2023-11-23 21:43:05,405 INFO L130 BoogieDeclarations]: Found specification of procedure xrealloc [2023-11-23 21:43:05,405 INFO L138 BoogieDeclarations]: Found implementation of procedure xrealloc [2023-11-23 21:43:05,406 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-23 21:43:05,406 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2023-11-23 21:43:05,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:43:05,406 INFO L130 BoogieDeclarations]: Found specification of procedure xzalloc [2023-11-23 21:43:05,406 INFO L138 BoogieDeclarations]: Found implementation of procedure xzalloc [2023-11-23 21:43:05,407 INFO L130 BoogieDeclarations]: Found specification of procedure count_dirs [2023-11-23 21:43:05,407 INFO L138 BoogieDeclarations]: Found implementation of procedure count_dirs [2023-11-23 21:43:05,407 INFO L130 BoogieDeclarations]: Found specification of procedure my_stat [2023-11-23 21:43:05,407 INFO L138 BoogieDeclarations]: Found implementation of procedure my_stat [2023-11-23 21:43:05,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 21:43:05,408 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-23 21:43:05,408 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-23 21:43:05,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:43:05,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:43:05,408 INFO L130 BoogieDeclarations]: Found specification of procedure dfree [2023-11-23 21:43:05,409 INFO L138 BoogieDeclarations]: Found implementation of procedure dfree [2023-11-23 21:43:05,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:43:05,409 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2023-11-23 21:43:05,409 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-23 21:43:05,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:43:05,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:43:05,410 INFO L130 BoogieDeclarations]: Found specification of procedure dnsort [2023-11-23 21:43:05,410 INFO L138 BoogieDeclarations]: Found implementation of procedure dnsort [2023-11-23 21:43:05,410 INFO L130 BoogieDeclarations]: Found specification of procedure printable_string [2023-11-23 21:43:05,411 INFO L138 BoogieDeclarations]: Found implementation of procedure printable_string [2023-11-23 21:43:05,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:43:05,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:43:05,411 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-23 21:43:05,411 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-23 21:43:05,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-23 21:43:05,412 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-23 21:43:05,412 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-23 21:43:05,412 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-23 21:43:05,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 21:43:05,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:43:05,413 INFO L130 BoogieDeclarations]: Found specification of procedure bb_simple_perror_msg [2023-11-23 21:43:05,413 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_simple_perror_msg [2023-11-23 21:43:05,413 INFO L130 BoogieDeclarations]: Found specification of procedure get_cached_groupname [2023-11-23 21:43:05,413 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cached_groupname [2023-11-23 21:43:05,414 INFO L130 BoogieDeclarations]: Found specification of procedure sort_and_display_files [2023-11-23 21:43:05,414 INFO L138 BoogieDeclarations]: Found implementation of procedure sort_and_display_files [2023-11-23 21:43:05,414 INFO L130 BoogieDeclarations]: Found specification of procedure stat [2023-11-23 21:43:05,414 INFO L138 BoogieDeclarations]: Found implementation of procedure stat [2023-11-23 21:43:05,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:43:05,415 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:43:05,415 INFO L130 BoogieDeclarations]: Found specification of procedure fgcolor [2023-11-23 21:43:05,415 INFO L138 BoogieDeclarations]: Found implementation of procedure fgcolor [2023-11-23 21:43:05,415 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:43:05,415 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:43:05,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:43:05,416 INFO L130 BoogieDeclarations]: Found specification of procedure splitdnarray [2023-11-23 21:43:05,416 INFO L138 BoogieDeclarations]: Found implementation of procedure splitdnarray [2023-11-23 21:43:05,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:43:05,416 INFO L130 BoogieDeclarations]: Found specification of procedure bold [2023-11-23 21:43:05,417 INFO L138 BoogieDeclarations]: Found implementation of procedure bold [2023-11-23 21:43:05,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:43:05,417 INFO L130 BoogieDeclarations]: Found specification of procedure append_char [2023-11-23 21:43:05,417 INFO L138 BoogieDeclarations]: Found implementation of procedure append_char [2023-11-23 21:43:05,417 INFO L130 BoogieDeclarations]: Found specification of procedure scan_and_display_dirs_recur [2023-11-23 21:43:05,418 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_and_display_dirs_recur [2023-11-23 21:43:05,418 INFO L130 BoogieDeclarations]: Found specification of procedure lstat [2023-11-23 21:43:05,418 INFO L138 BoogieDeclarations]: Found implementation of procedure lstat [2023-11-23 21:43:05,418 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-23 21:43:05,418 INFO L130 BoogieDeclarations]: Found specification of procedure wh_helper [2023-11-23 21:43:05,419 INFO L138 BoogieDeclarations]: Found implementation of procedure wh_helper [2023-11-23 21:43:05,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:43:05,419 INFO L130 BoogieDeclarations]: Found specification of procedure bb_perror_msg [2023-11-23 21:43:05,419 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_perror_msg [2023-11-23 21:43:05,419 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2023-11-23 21:43:05,420 INFO L130 BoogieDeclarations]: Found specification of procedure isatty [2023-11-23 21:43:05,420 INFO L138 BoogieDeclarations]: Found implementation of procedure isatty [2023-11-23 21:43:05,420 INFO L130 BoogieDeclarations]: Found specification of procedure dnalloc [2023-11-23 21:43:05,420 INFO L138 BoogieDeclarations]: Found implementation of procedure dnalloc [2023-11-23 21:43:05,421 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-23 21:43:05,421 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-23 21:43:05,421 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-23 21:43:05,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:43:05,421 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2023-11-23 21:43:06,280 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:43:06,284 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:43:11,353 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:43:11,560 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:43:11,560 INFO L309 CfgBuilder]: Removed 66 assume(true) statements. [2023-11-23 21:43:11,561 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:43:11 BoogieIcfgContainer [2023-11-23 21:43:11,562 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:43:11,564 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:43:11,565 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:43:11,569 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:43:11,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:43:00" (1/3) ... [2023-11-23 21:43:11,570 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62880b97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:43:11, skipping insertion in model container [2023-11-23 21:43:11,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:04" (2/3) ... [2023-11-23 21:43:11,571 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62880b97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:43:11, skipping insertion in model container [2023-11-23 21:43:11,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:43:11" (3/3) ... [2023-11-23 21:43:11,573 INFO L112 eAbstractionObserver]: Analyzing ICFG ls-incomplete-2.i [2023-11-23 21:43:11,597 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:43:11,597 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 127 error locations. [2023-11-23 21:43:11,698 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:43:11,706 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7ad0364a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:43:11,707 INFO L358 AbstractCegarLoop]: Starting to check reachability of 127 error locations. [2023-11-23 21:43:11,721 INFO L276 IsEmpty]: Start isEmpty. Operand has 1428 states, 1164 states have (on average 1.7001718213058419) internal successors, (1979), 1300 states have internal predecessors, (1979), 104 states have call successors, (104), 33 states have call predecessors, (104), 33 states have return successors, (104), 103 states have call predecessors, (104), 104 states have call successors, (104) [2023-11-23 21:43:11,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-23 21:43:11,729 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:43:11,730 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-23 21:43:11,731 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [printable_stringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 124 more)] === [2023-11-23 21:43:11,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:43:11,738 INFO L85 PathProgramCache]: Analyzing trace with hash 4977888, now seen corresponding path program 1 times [2023-11-23 21:43:11,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:43:11,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031263614] [2023-11-23 21:43:11,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:11,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:43:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:12,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:43:12,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:43:12,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031263614] [2023-11-23 21:43:12,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031263614] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:43:12,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:43:12,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:43:12,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817055440] [2023-11-23 21:43:12,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:43:12,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:43:12,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:43:12,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:43:12,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:43:12,632 INFO L87 Difference]: Start difference. First operand has 1428 states, 1164 states have (on average 1.7001718213058419) internal successors, (1979), 1300 states have internal predecessors, (1979), 104 states have call successors, (104), 33 states have call predecessors, (104), 33 states have return successors, (104), 103 states have call predecessors, (104), 104 states have call successors, (104) 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) [2023-11-23 21:43:15,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:43:16,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:43:16,041 INFO L93 Difference]: Finished difference Result 2798 states and 4381 transitions. [2023-11-23 21:43:16,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:43:16,045 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 [2023-11-23 21:43:16,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:43:16,078 INFO L225 Difference]: With dead ends: 2798 [2023-11-23 21:43:16,079 INFO L226 Difference]: Without dead ends: 1367 [2023-11-23 21:43:16,104 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 [2023-11-23 21:43:16,109 INFO L413 NwaCegarLoop]: 1936 mSDtfsCounter, 1 mSDsluCounter, 1932 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3868 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:43:16,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3868 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-23 21:43:16,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1367 states. [2023-11-23 21:43:16,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1367 to 1367. [2023-11-23 21:43:16,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1367 states, 1126 states have (on average 1.6065719360568385) internal successors, (1809), 1248 states have internal predecessors, (1809), 97 states have call successors, (97), 32 states have call predecessors, (97), 31 states have return successors, (90), 89 states have call predecessors, (90), 90 states have call successors, (90) [2023-11-23 21:43:16,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 1996 transitions. [2023-11-23 21:43:16,285 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 1996 transitions. Word has length 3 [2023-11-23 21:43:16,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:43:16,285 INFO L495 AbstractCegarLoop]: Abstraction has 1367 states and 1996 transitions. [2023-11-23 21:43:16,286 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) [2023-11-23 21:43:16,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 1996 transitions. [2023-11-23 21:43:16,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 21:43:16,287 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:43:16,287 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-23 21:43:16,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:43:16,288 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [printable_stringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 124 more)] === [2023-11-23 21:43:16,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:43:16,289 INFO L85 PathProgramCache]: Analyzing trace with hash -2024759094, now seen corresponding path program 1 times [2023-11-23 21:43:16,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:43:16,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578276754] [2023-11-23 21:43:16,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:16,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:43:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:16,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:43:16,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:43:16,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578276754] [2023-11-23 21:43:16,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578276754] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:43:16,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594830563] [2023-11-23 21:43:16,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:16,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:43:16,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da51b053-2157-4d5d-84f6-22a7d192377c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:43:16,755 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da51b053-2157-4d5d-84f6-22a7d192377c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:43:16,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da51b053-2157-4d5d-84f6-22a7d192377c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:43:17,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:17,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 1072 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:43:17,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:43:17,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:43:17,659 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:43:17,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594830563] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:43:17,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:43:17,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-23 21:43:17,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857270252] [2023-11-23 21:43:17,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:43:17,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:43:17,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:43:17,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:43:17,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:43:17,664 INFO L87 Difference]: Start difference. First operand 1367 states and 1996 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) [2023-11-23 21:43:21,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:43:21,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:43:21,920 INFO L93 Difference]: Finished difference Result 1367 states and 1996 transitions. [2023-11-23 21:43:21,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:43:21,922 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 [2023-11-23 21:43:21,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:43:21,934 INFO L225 Difference]: With dead ends: 1367 [2023-11-23 21:43:21,934 INFO L226 Difference]: Without dead ends: 1366 [2023-11-23 21:43:21,936 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 [2023-11-23 21:43:21,937 INFO L413 NwaCegarLoop]: 1925 mSDtfsCounter, 3 mSDsluCounter, 3848 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 5773 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:43:21,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 5773 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-23 21:43:21,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1366 states. [2023-11-23 21:43:22,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1366 to 1366. [2023-11-23 21:43:22,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1366 states, 1126 states have (on average 1.6056838365896982) internal successors, (1808), 1247 states have internal predecessors, (1808), 97 states have call successors, (97), 32 states have call predecessors, (97), 31 states have return successors, (90), 89 states have call predecessors, (90), 90 states have call successors, (90) [2023-11-23 21:43:22,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 1995 transitions. [2023-11-23 21:43:22,034 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 1995 transitions. Word has length 6 [2023-11-23 21:43:22,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:43:22,035 INFO L495 AbstractCegarLoop]: Abstraction has 1366 states and 1995 transitions. [2023-11-23 21:43:22,036 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) [2023-11-23 21:43:22,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 1995 transitions. [2023-11-23 21:43:22,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 21:43:22,037 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:43:22,037 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-23 21:43:22,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da51b053-2157-4d5d-84f6-22a7d192377c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:43:22,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da51b053-2157-4d5d-84f6-22a7d192377c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:43:22,263 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [printable_stringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 124 more)] === [2023-11-23 21:43:22,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:43:22,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1656980381, now seen corresponding path program 1 times [2023-11-23 21:43:22,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:43:22,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573507204] [2023-11-23 21:43:22,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:22,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:43:22,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:22,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:43:22,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:43:22,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573507204] [2023-11-23 21:43:22,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573507204] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:43:22,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:43:22,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:43:22,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542443455] [2023-11-23 21:43:22,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:43:22,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:43:22,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:43:22,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:43:22,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:43:22,642 INFO L87 Difference]: Start difference. First operand 1366 states and 1995 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) [2023-11-23 21:43:24,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:43:24,759 INFO L93 Difference]: Finished difference Result 1366 states and 1995 transitions. [2023-11-23 21:43:24,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:43:24,760 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 [2023-11-23 21:43:24,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:43:24,772 INFO L225 Difference]: With dead ends: 1366 [2023-11-23 21:43:24,772 INFO L226 Difference]: Without dead ends: 1365 [2023-11-23 21:43:24,774 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 [2023-11-23 21:43:24,775 INFO L413 NwaCegarLoop]: 1926 mSDtfsCounter, 0 mSDsluCounter, 1924 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3850 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:43:24,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3850 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-23 21:43:24,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2023-11-23 21:43:24,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1363. [2023-11-23 21:43:24,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1124 states have (on average 1.6058718861209964) internal successors, (1805), 1244 states have internal predecessors, (1805), 97 states have call successors, (97), 32 states have call predecessors, (97), 31 states have return successors, (90), 89 states have call predecessors, (90), 90 states have call successors, (90) [2023-11-23 21:43:24,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1992 transitions. [2023-11-23 21:43:24,840 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1992 transitions. Word has length 7 [2023-11-23 21:43:24,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:43:24,840 INFO L495 AbstractCegarLoop]: Abstraction has 1363 states and 1992 transitions. [2023-11-23 21:43:24,841 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) [2023-11-23 21:43:24,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1992 transitions. [2023-11-23 21:43:24,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 21:43:24,842 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:43:24,842 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:43:24,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:43:24,843 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [printable_stringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 124 more)] === [2023-11-23 21:43:24,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:43:24,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1980178142, now seen corresponding path program 1 times [2023-11-23 21:43:24,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:43:24,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746911855] [2023-11-23 21:43:24,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:24,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:43:24,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:25,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 21:43:25,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:25,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:43:25,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:43:25,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746911855] [2023-11-23 21:43:25,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746911855] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:43:25,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066870765] [2023-11-23 21:43:25,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:25,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:43:25,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da51b053-2157-4d5d-84f6-22a7d192377c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:43:25,259 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da51b053-2157-4d5d-84f6-22a7d192377c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:43:25,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da51b053-2157-4d5d-84f6-22a7d192377c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:43:26,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:26,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:43:26,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:43:26,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:43:26,147 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:43:26,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066870765] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:43:26,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:43:26,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-23 21:43:26,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348143653] [2023-11-23 21:43:26,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:43:26,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:43:26,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:43:26,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:43:26,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:43:26,151 INFO L87 Difference]: Start difference. First operand 1363 states and 1992 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-11-23 21:43:29,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:43:31,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:43:31,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:43:31,621 INFO L93 Difference]: Finished difference Result 1363 states and 1992 transitions. [2023-11-23 21:43:31,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:43:31,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 12 [2023-11-23 21:43:31,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:43:31,633 INFO L225 Difference]: With dead ends: 1363 [2023-11-23 21:43:31,634 INFO L226 Difference]: Without dead ends: 1361 [2023-11-23 21:43:31,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:43:31,637 INFO L413 NwaCegarLoop]: 1917 mSDtfsCounter, 700 mSDsluCounter, 1214 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 3131 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:43:31,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 3131 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2023-11-23 21:43:31,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2023-11-23 21:43:31,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1361. [2023-11-23 21:43:31,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1361 states, 1124 states have (on average 1.6040925266903914) internal successors, (1803), 1242 states have internal predecessors, (1803), 97 states have call successors, (97), 32 states have call predecessors, (97), 31 states have return successors, (90), 89 states have call predecessors, (90), 90 states have call successors, (90) [2023-11-23 21:43:31,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1990 transitions. [2023-11-23 21:43:31,713 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1990 transitions. Word has length 12 [2023-11-23 21:43:31,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:43:31,716 INFO L495 AbstractCegarLoop]: Abstraction has 1361 states and 1990 transitions. [2023-11-23 21:43:31,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-11-23 21:43:31,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1990 transitions. [2023-11-23 21:43:31,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-23 21:43:31,717 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:43:31,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:43:31,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da51b053-2157-4d5d-84f6-22a7d192377c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:43:31,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da51b053-2157-4d5d-84f6-22a7d192377c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:43:31,931 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [printable_stringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 124 more)] === [2023-11-23 21:43:31,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:43:31,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1255977394, now seen corresponding path program 1 times [2023-11-23 21:43:31,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:43:31,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262722935] [2023-11-23 21:43:31,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:31,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:43:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:32,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 21:43:32,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:32,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:43:32,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:43:32,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262722935] [2023-11-23 21:43:32,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262722935] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:43:32,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872272295] [2023-11-23 21:43:32,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:32,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:43:32,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da51b053-2157-4d5d-84f6-22a7d192377c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:43:32,393 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da51b053-2157-4d5d-84f6-22a7d192377c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:43:32,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da51b053-2157-4d5d-84f6-22a7d192377c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:43:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:33,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:43:33,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:43:33,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:43:33,283 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:43:33,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:43:33,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872272295] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:43:33,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:43:33,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2023-11-23 21:43:33,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106620240] [2023-11-23 21:43:33,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:43:33,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:43:33,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:43:33,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:43:33,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:43:33,342 INFO L87 Difference]: Start difference. First operand 1361 states and 1990 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:43:36,277 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 [] [2023-11-23 21:43:37,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:43:37,647 INFO L93 Difference]: Finished difference Result 2726 states and 3986 transitions. [2023-11-23 21:43:37,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:43:37,648 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2023-11-23 21:43:37,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:43:37,659 INFO L225 Difference]: With dead ends: 2726 [2023-11-23 21:43:37,660 INFO L226 Difference]: Without dead ends: 1370 [2023-11-23 21:43:37,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:43:37,666 INFO L413 NwaCegarLoop]: 1924 mSDtfsCounter, 4 mSDsluCounter, 3844 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5768 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:43:37,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 5768 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 203 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2023-11-23 21:43:37,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2023-11-23 21:43:37,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 1370. [2023-11-23 21:43:37,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1133 states have (on average 1.5992939099735217) internal successors, (1812), 1251 states have internal predecessors, (1812), 97 states have call successors, (97), 32 states have call predecessors, (97), 31 states have return successors, (90), 89 states have call predecessors, (90), 90 states have call successors, (90) [2023-11-23 21:43:37,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 1999 transitions. [2023-11-23 21:43:37,728 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 1999 transitions. Word has length 13 [2023-11-23 21:43:37,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:43:37,729 INFO L495 AbstractCegarLoop]: Abstraction has 1370 states and 1999 transitions. [2023-11-23 21:43:37,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:43:37,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 1999 transitions. [2023-11-23 21:43:37,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-23 21:43:37,731 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:43:37,731 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:43:37,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da51b053-2157-4d5d-84f6-22a7d192377c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:43:37,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da51b053-2157-4d5d-84f6-22a7d192377c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:43:37,957 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [printable_stringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 124 more)] === [2023-11-23 21:43:37,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:43:37,958 INFO L85 PathProgramCache]: Analyzing trace with hash -284117512, now seen corresponding path program 2 times [2023-11-23 21:43:37,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:43:37,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985572857] [2023-11-23 21:43:37,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:37,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:43:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:38,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 21:43:38,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:38,441 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:43:38,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:43:38,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985572857] [2023-11-23 21:43:38,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985572857] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:43:38,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695202320] [2023-11-23 21:43:38,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 21:43:38,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:43:38,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da51b053-2157-4d5d-84f6-22a7d192377c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:43:38,445 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da51b053-2157-4d5d-84f6-22a7d192377c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:43:38,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da51b053-2157-4d5d-84f6-22a7d192377c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 21:43:39,094 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 21:43:39,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:43:39,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 1071 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:43:39,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:43:39,177 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-23 21:43:39,177 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:43:39,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695202320] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:43:39,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:43:39,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-11-23 21:43:39,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823555840] [2023-11-23 21:43:39,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:43:39,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:43:39,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:43:39,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:43:39,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-23 21:43:39,181 INFO L87 Difference]: Start difference. First operand 1370 states and 1999 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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) [2023-11-23 21:43:44,020 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 [] [2023-11-23 21:43:44,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:43:44,979 INFO L93 Difference]: Finished difference Result 1370 states and 1999 transitions. [2023-11-23 21:43:44,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:43:44,980 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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 22 [2023-11-23 21:43:44,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:43:44,989 INFO L225 Difference]: With dead ends: 1370 [2023-11-23 21:43:44,989 INFO L226 Difference]: Without dead ends: 1368 [2023-11-23 21:43:44,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:43:44,991 INFO L413 NwaCegarLoop]: 1905 mSDtfsCounter, 699 mSDsluCounter, 4989 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 6894 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:43:44,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 6894 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 326 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2023-11-23 21:43:44,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2023-11-23 21:43:45,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 1368. [2023-11-23 21:43:45,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1368 states, 1133 states have (on average 1.5975286849073256) internal successors, (1810), 1249 states have internal predecessors, (1810), 97 states have call successors, (97), 32 states have call predecessors, (97), 31 states have return successors, (90), 89 states have call predecessors, (90), 90 states have call successors, (90) [2023-11-23 21:43:45,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 1997 transitions. [2023-11-23 21:43:45,044 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 1997 transitions. Word has length 22 [2023-11-23 21:43:45,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:43:45,045 INFO L495 AbstractCegarLoop]: Abstraction has 1368 states and 1997 transitions. [2023-11-23 21:43:45,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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) [2023-11-23 21:43:45,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 1997 transitions. [2023-11-23 21:43:45,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-23 21:43:45,046 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:43:45,046 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:43:45,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da51b053-2157-4d5d-84f6-22a7d192377c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:43:45,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da51b053-2157-4d5d-84f6-22a7d192377c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:43:45,267 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [printable_stringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 124 more)] === [2023-11-23 21:43:45,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:43:45,267 INFO L85 PathProgramCache]: Analyzing trace with hash 575714373, now seen corresponding path program 1 times [2023-11-23 21:43:45,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:43:45,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742584180] [2023-11-23 21:43:45,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:45,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:43:45,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:45,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 21:43:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:45,584 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-23 21:43:45,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:43:45,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742584180] [2023-11-23 21:43:45,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742584180] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:43:45,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:43:45,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:43:45,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731415814] [2023-11-23 21:43:45,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:43:45,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:43:45,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:43:45,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:43:45,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:43:45,587 INFO L87 Difference]: Start difference. First operand 1368 states and 1997 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 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) [2023-11-23 21:43:48,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:43:48,728 INFO L93 Difference]: Finished difference Result 2719 states and 3978 transitions. [2023-11-23 21:43:48,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:43:48,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 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 27 [2023-11-23 21:43:48,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:43:48,741 INFO L225 Difference]: With dead ends: 2719 [2023-11-23 21:43:48,741 INFO L226 Difference]: Without dead ends: 1371 [2023-11-23 21:43:48,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:43:48,748 INFO L413 NwaCegarLoop]: 1922 mSDtfsCounter, 1 mSDsluCounter, 1917 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3839 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:43:48,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3839 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-23 21:43:48,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2023-11-23 21:43:48,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1371. [2023-11-23 21:43:48,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1371 states, 1136 states have (on average 1.595950704225352) internal successors, (1813), 1252 states have internal predecessors, (1813), 97 states have call successors, (97), 32 states have call predecessors, (97), 31 states have return successors, (90), 89 states have call predecessors, (90), 90 states have call successors, (90) [2023-11-23 21:43:48,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 2000 transitions. [2023-11-23 21:43:48,806 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 2000 transitions. Word has length 27 [2023-11-23 21:43:48,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:43:48,807 INFO L495 AbstractCegarLoop]: Abstraction has 1371 states and 2000 transitions. [2023-11-23 21:43:48,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 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) [2023-11-23 21:43:48,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 2000 transitions. [2023-11-23 21:43:48,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-23 21:43:48,809 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:43:48,809 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:43:48,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 21:43:48,810 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [printable_stringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 124 more)] === [2023-11-23 21:43:48,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:43:48,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1305341735, now seen corresponding path program 1 times [2023-11-23 21:43:48,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:43:48,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375366949] [2023-11-23 21:43:48,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:48,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:43:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:49,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 21:43:49,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:49,182 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-23 21:43:49,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:43:49,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375366949] [2023-11-23 21:43:49,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375366949] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:43:49,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582598255] [2023-11-23 21:43:49,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:49,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:43:49,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da51b053-2157-4d5d-84f6-22a7d192377c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:43:49,187 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da51b053-2157-4d5d-84f6-22a7d192377c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:43:49,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da51b053-2157-4d5d-84f6-22a7d192377c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 21:43:49,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:49,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:43:49,871 INFO L285 TraceCheckSpWp]: Computing forward predicates...