./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/printf-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 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_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/printf-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx --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 a1277896718e4a2de50a241e859788fd2cca972852ccec2fe2acb0e0515dfcaa --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 20:59:52,906 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 20:59:53,003 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-21 20:59:53,016 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 20:59:53,017 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 20:59:53,059 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 20:59:53,061 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 20:59:53,062 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 20:59:53,063 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 20:59:53,068 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 20:59:53,069 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 20:59:53,069 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 20:59:53,070 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 20:59:53,072 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 20:59:53,073 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 20:59:53,073 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 20:59:53,074 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 20:59:53,074 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 20:59:53,075 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 20:59:53,075 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 20:59:53,076 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 20:59:53,080 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 20:59:53,081 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 20:59:53,081 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 20:59:53,082 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 20:59:53,082 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 20:59:53,082 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 20:59:53,083 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 20:59:53,083 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 20:59:53,084 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 20:59:53,084 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 20:59:53,084 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 20:59:53,085 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 20:59:53,091 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 20:59:53,091 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 20:59:53,091 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 20:59:53,092 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 20:59:53,092 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 20:59:53,092 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 20:59:53,092 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 20:59:53,092 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 20:59:53,096 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_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1277896718e4a2de50a241e859788fd2cca972852ccec2fe2acb0e0515dfcaa [2023-11-21 20:59:53,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 20:59:53,401 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 20:59:53,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 20:59:53,408 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 20:59:53,408 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 20:59:53,410 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/busybox-1.22.0/printf-2.i [2023-11-21 20:59:56,579 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 20:59:57,085 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 20:59:57,086 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/sv-benchmarks/c/busybox-1.22.0/printf-2.i [2023-11-21 20:59:57,132 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/data/4c8c9c070/6537e4619cb54fbb8ab96eb5cfbbaa4f/FLAG3c96ca359 [2023-11-21 20:59:57,152 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/data/4c8c9c070/6537e4619cb54fbb8ab96eb5cfbbaa4f [2023-11-21 20:59:57,160 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 20:59:57,162 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 20:59:57,167 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 20:59:57,167 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 20:59:57,172 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 20:59:57,172 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:59:57" (1/1) ... [2023-11-21 20:59:57,173 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7162ca83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:57, skipping insertion in model container [2023-11-21 20:59:57,174 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:59:57" (1/1) ... [2023-11-21 20:59:57,303 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 20:59:58,941 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 20:59:58,975 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 20:59:59,239 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 20:59:59,442 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 20:59:59,443 WARN L675 CHandler]: The function strtoull is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 20:59:59,443 WARN L675 CHandler]: The function strtol is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 20:59:59,443 WARN L675 CHandler]: The function strstr is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 20:59:59,444 WARN L675 CHandler]: The function putchar is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 20:59:59,444 WARN L675 CHandler]: The function strtoll is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 20:59:59,444 WARN L675 CHandler]: The function convert is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 20:59:59,452 INFO L206 MainTranslator]: Completed translation [2023-11-21 20:59:59,453 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:59 WrapperNode [2023-11-21 20:59:59,453 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 20:59:59,454 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 20:59:59,455 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 20:59:59,455 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 20:59:59,463 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:59" (1/1) ... [2023-11-21 20:59:59,527 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:59" (1/1) ... [2023-11-21 20:59:59,653 INFO L138 Inliner]: procedures = 648, calls = 525, calls flagged for inlining = 31, calls inlined = 29, statements flattened = 1600 [2023-11-21 20:59:59,654 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 20:59:59,655 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 20:59:59,655 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 20:59:59,655 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 20:59:59,668 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:59" (1/1) ... [2023-11-21 20:59:59,668 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:59" (1/1) ... [2023-11-21 20:59:59,698 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:59" (1/1) ... [2023-11-21 20:59:59,714 WARN L106 HeapSplitter]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2023-11-21 20:59:59,714 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:59" (1/1) ... [2023-11-21 20:59:59,715 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:59" (1/1) ... [2023-11-21 20:59:59,810 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:59" (1/1) ... [2023-11-21 20:59:59,837 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:59" (1/1) ... [2023-11-21 20:59:59,862 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:59" (1/1) ... [2023-11-21 20:59:59,874 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:59" (1/1) ... [2023-11-21 20:59:59,906 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 20:59:59,908 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 20:59:59,908 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 20:59:59,909 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 20:59:59,910 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:59" (1/1) ... [2023-11-21 20:59:59,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 20:59:59,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:59:59,947 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 20:59:59,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 20:59:59,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-21 20:59:59,997 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-11-21 20:59:59,997 INFO L130 BoogieDeclarations]: Found specification of procedure bb_putchar [2023-11-21 20:59:59,997 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_putchar [2023-11-21 20:59:59,997 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2023-11-21 20:59:59,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 20:59:59,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-11-21 21:00:00,000 INFO L130 BoogieDeclarations]: Found specification of procedure ret_ERANGE [2023-11-21 21:00:00,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ret_ERANGE [2023-11-21 21:00:00,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-21 21:00:00,001 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-21 21:00:00,001 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-21 21:00:00,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-21 21:00:00,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 21:00:00,001 INFO L130 BoogieDeclarations]: Found specification of procedure get_width_prec [2023-11-21 21:00:00,002 INFO L138 BoogieDeclarations]: Found implementation of procedure get_width_prec [2023-11-21 21:00:00,003 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-11-21 21:00:00,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-21 21:00:00,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 21:00:00,004 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-21 21:00:00,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 21:00:00,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 21:00:00,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 21:00:00,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 21:00:00,005 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-21 21:00:00,006 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-21 21:00:00,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-21 21:00:00,007 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-21 21:00:00,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-21 21:00:00,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-21 21:00:00,007 INFO L130 BoogieDeclarations]: Found specification of procedure handle_errors [2023-11-21 21:00:00,007 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_errors [2023-11-21 21:00:00,007 INFO L130 BoogieDeclarations]: Found specification of procedure bb_process_escape_sequence [2023-11-21 21:00:00,008 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_process_escape_sequence [2023-11-21 21:00:00,008 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 21:00:00,008 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 21:00:00,008 INFO L130 BoogieDeclarations]: Found specification of procedure print_direc [2023-11-21 21:00:00,008 INFO L138 BoogieDeclarations]: Found implementation of procedure print_direc [2023-11-21 21:00:00,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 21:00:00,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 21:00:00,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-21 21:00:00,009 INFO L130 BoogieDeclarations]: Found specification of procedure bb_ascii_isalnum [2023-11-21 21:00:00,009 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_ascii_isalnum [2023-11-21 21:00:00,009 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-11-21 21:00:00,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 21:00:00,009 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2023-11-21 21:00:00,010 INFO L130 BoogieDeclarations]: Found specification of procedure bb_strtoll [2023-11-21 21:00:00,010 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_strtoll [2023-11-21 21:00:00,010 INFO L130 BoogieDeclarations]: Found specification of procedure multiconvert [2023-11-21 21:00:00,010 INFO L138 BoogieDeclarations]: Found implementation of procedure multiconvert [2023-11-21 21:00:00,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2023-11-21 21:00:00,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 21:00:00,011 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg [2023-11-21 21:00:00,011 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg [2023-11-21 21:00:00,605 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 21:00:00,608 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 21:00:02,449 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 21:00:03,023 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 21:00:03,023 INFO L308 CfgBuilder]: Removed 19 assume(true) statements. [2023-11-21 21:00:03,026 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:00:03 BoogieIcfgContainer [2023-11-21 21:00:03,026 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 21:00:03,029 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 21:00:03,030 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 21:00:03,033 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 21:00:03,034 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 08:59:57" (1/3) ... [2023-11-21 21:00:03,036 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f6a27fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:00:03, skipping insertion in model container [2023-11-21 21:00:03,036 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:59" (2/3) ... [2023-11-21 21:00:03,037 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f6a27fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:00:03, skipping insertion in model container [2023-11-21 21:00:03,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:00:03" (3/3) ... [2023-11-21 21:00:03,042 INFO L112 eAbstractionObserver]: Analyzing ICFG printf-2.i [2023-11-21 21:00:03,062 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 21:00:03,063 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2023-11-21 21:00:03,133 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 21:00:03,140 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;@462cae39, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 21:00:03,141 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2023-11-21 21:00:03,148 INFO L276 IsEmpty]: Start isEmpty. Operand has 384 states, 271 states have (on average 1.5904059040590406) internal successors, (431), 330 states have internal predecessors, (431), 54 states have call successors, (54), 14 states have call predecessors, (54), 14 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-21 21:00:03,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-21 21:00:03,155 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:00:03,156 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-21 21:00:03,157 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_process_escape_sequenceErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_process_escape_sequenceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2023-11-21 21:00:03,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:03,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1558264, now seen corresponding path program 1 times [2023-11-21 21:00:03,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:03,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529296937] [2023-11-21 21:00:03,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:03,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:03,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:03,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:03,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:03,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529296937] [2023-11-21 21:00:03,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529296937] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:03,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:03,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 21:00:03,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487877417] [2023-11-21 21:00:03,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:03,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:00:03,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:03,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:00:03,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:00:03,910 INFO L87 Difference]: Start difference. First operand has 384 states, 271 states have (on average 1.5904059040590406) internal successors, (431), 330 states have internal predecessors, (431), 54 states have call successors, (54), 14 states have call predecessors, (54), 14 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) 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) [2023-11-21 21:00:04,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:04,367 INFO L93 Difference]: Finished difference Result 756 states and 1096 transitions. [2023-11-21 21:00:04,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:00:04,370 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 [2023-11-21 21:00:04,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:00:04,383 INFO L225 Difference]: With dead ends: 756 [2023-11-21 21:00:04,383 INFO L226 Difference]: Without dead ends: 359 [2023-11-21 21:00:04,391 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 [2023-11-21 21:00:04,394 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 1 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 21:00:04,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 858 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 21:00:04,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-11-21 21:00:04,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2023-11-21 21:00:04,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 272 states have (on average 1.4448529411764706) internal successors, (393), 307 states have internal predecessors, (393), 40 states have call successors, (40), 13 states have call predecessors, (40), 13 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-21 21:00:04,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 472 transitions. [2023-11-21 21:00:04,469 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 472 transitions. Word has length 3 [2023-11-21 21:00:04,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:00:04,470 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 472 transitions. [2023-11-21 21:00:04,470 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) [2023-11-21 21:00:04,470 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 472 transitions. [2023-11-21 21:00:04,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 21:00:04,471 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:00:04,471 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-21 21:00:04,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 21:00:04,472 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_process_escape_sequenceErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_process_escape_sequenceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2023-11-21 21:00:04,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:04,472 INFO L85 PathProgramCache]: Analyzing trace with hash -821423456, now seen corresponding path program 1 times [2023-11-21 21:00:04,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:04,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680673549] [2023-11-21 21:00:04,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:04,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:04,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:04,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:04,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:04,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680673549] [2023-11-21 21:00:04,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680673549] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:00:04,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289790204] [2023-11-21 21:00:04,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:04,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:00:04,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:04,709 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:00:04,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 21:00:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:05,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 21:00:05,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:05,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:05,113 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:00:05,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289790204] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:05,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 21:00:05,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-21 21:00:05,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888327795] [2023-11-21 21:00:05,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:05,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 21:00:05,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:05,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 21:00:05,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:00:05,129 INFO L87 Difference]: Start difference. First operand 359 states and 472 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) [2023-11-21 21:00:05,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:05,441 INFO L93 Difference]: Finished difference Result 359 states and 472 transitions. [2023-11-21 21:00:05,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 21:00:05,442 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 [2023-11-21 21:00:05,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:00:05,445 INFO L225 Difference]: With dead ends: 359 [2023-11-21 21:00:05,445 INFO L226 Difference]: Without dead ends: 358 [2023-11-21 21:00:05,446 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 [2023-11-21 21:00:05,447 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 3 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 21:00:05,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 798 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 21:00:05,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2023-11-21 21:00:05,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2023-11-21 21:00:05,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 272 states have (on average 1.4411764705882353) internal successors, (392), 306 states have internal predecessors, (392), 40 states have call successors, (40), 13 states have call predecessors, (40), 13 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-21 21:00:05,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 471 transitions. [2023-11-21 21:00:05,504 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 471 transitions. Word has length 6 [2023-11-21 21:00:05,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:00:05,505 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 471 transitions. [2023-11-21 21:00:05,505 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) [2023-11-21 21:00:05,505 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 471 transitions. [2023-11-21 21:00:05,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-21 21:00:05,506 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:00:05,506 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-21 21:00:05,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-21 21:00:05,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:00:05,721 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_process_escape_sequenceErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_process_escape_sequenceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2023-11-21 21:00:05,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:05,721 INFO L85 PathProgramCache]: Analyzing trace with hash 305677621, now seen corresponding path program 1 times [2023-11-21 21:00:05,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:05,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072504729] [2023-11-21 21:00:05,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:05,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:05,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:05,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 21:00:05,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:05,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072504729] [2023-11-21 21:00:05,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072504729] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:05,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:05,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 21:00:05,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052311688] [2023-11-21 21:00:05,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:05,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:00:05,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:05,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:00:05,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:00:05,902 INFO L87 Difference]: Start difference. First operand 358 states and 471 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) [2023-11-21 21:00:06,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:06,155 INFO L93 Difference]: Finished difference Result 358 states and 471 transitions. [2023-11-21 21:00:06,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:00:06,156 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 [2023-11-21 21:00:06,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:00:06,159 INFO L225 Difference]: With dead ends: 358 [2023-11-21 21:00:06,160 INFO L226 Difference]: Without dead ends: 357 [2023-11-21 21:00:06,160 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 [2023-11-21 21:00:06,161 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 0 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 21:00:06,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 798 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 21:00:06,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2023-11-21 21:00:06,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 355. [2023-11-21 21:00:06,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 270 states have (on average 1.4407407407407407) internal successors, (389), 303 states have internal predecessors, (389), 40 states have call successors, (40), 13 states have call predecessors, (40), 13 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-21 21:00:06,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 468 transitions. [2023-11-21 21:00:06,182 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 468 transitions. Word has length 7 [2023-11-21 21:00:06,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:00:06,182 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 468 transitions. [2023-11-21 21:00:06,182 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) [2023-11-21 21:00:06,182 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 468 transitions. [2023-11-21 21:00:06,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 21:00:06,183 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:00:06,183 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:06,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 21:00:06,183 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_process_escape_sequenceErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_process_escape_sequenceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2023-11-21 21:00:06,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:06,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1958645008, now seen corresponding path program 1 times [2023-11-21 21:00:06,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:06,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513276165] [2023-11-21 21:00:06,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:06,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:06,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:06,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 21:00:06,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:06,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:06,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:06,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513276165] [2023-11-21 21:00:06,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513276165] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:00:06,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400585247] [2023-11-21 21:00:06,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:06,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:00:06,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:06,469 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:00:06,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 21:00:06,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:06,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 21:00:06,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:06,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 21:00:06,788 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:00:06,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400585247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:06,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 21:00:06,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-21 21:00:06,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152898371] [2023-11-21 21:00:06,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:06,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:00:06,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:06,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:00:06,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:00:06,791 INFO L87 Difference]: Start difference. First operand 355 states and 468 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 21:00:07,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:07,054 INFO L93 Difference]: Finished difference Result 355 states and 468 transitions. [2023-11-21 21:00:07,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:00:07,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-11-21 21:00:07,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:00:07,057 INFO L225 Difference]: With dead ends: 355 [2023-11-21 21:00:07,057 INFO L226 Difference]: Without dead ends: 353 [2023-11-21 21:00:07,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:00:07,059 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 129 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 21:00:07,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 664 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 21:00:07,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2023-11-21 21:00:07,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2023-11-21 21:00:07,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 270 states have (on average 1.4333333333333333) internal successors, (387), 301 states have internal predecessors, (387), 40 states have call successors, (40), 13 states have call predecessors, (40), 13 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-21 21:00:07,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 466 transitions. [2023-11-21 21:00:07,078 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 466 transitions. Word has length 9 [2023-11-21 21:00:07,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:00:07,080 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 466 transitions. [2023-11-21 21:00:07,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 21:00:07,080 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 466 transitions. [2023-11-21 21:00:07,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-21 21:00:07,080 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:00:07,081 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:07,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:07,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:00:07,301 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_process_escape_sequenceErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_process_escape_sequenceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2023-11-21 21:00:07,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:07,301 INFO L85 PathProgramCache]: Analyzing trace with hash -588452114, now seen corresponding path program 1 times [2023-11-21 21:00:07,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:07,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746829057] [2023-11-21 21:00:07,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:07,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:07,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:07,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 21:00:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:07,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:07,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:07,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746829057] [2023-11-21 21:00:07,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746829057] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:00:07,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696324679] [2023-11-21 21:00:07,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:07,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:00:07,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:07,541 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:00:07,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 21:00:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:07,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 21:00:07,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:07,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:07,872 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 21:00:07,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:07,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696324679] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 21:00:07,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 21:00:07,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2023-11-21 21:00:07,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299952174] [2023-11-21 21:00:07,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 21:00:07,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 21:00:07,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:07,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 21:00:07,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-21 21:00:07,903 INFO L87 Difference]: Start difference. First operand 353 states and 466 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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) [2023-11-21 21:00:08,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:08,234 INFO L93 Difference]: Finished difference Result 710 states and 938 transitions. [2023-11-21 21:00:08,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 21:00:08,235 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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 10 [2023-11-21 21:00:08,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:00:08,238 INFO L225 Difference]: With dead ends: 710 [2023-11-21 21:00:08,239 INFO L226 Difference]: Without dead ends: 362 [2023-11-21 21:00:08,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-21 21:00:08,244 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 4 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 21:00:08,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1191 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 21:00:08,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2023-11-21 21:00:08,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2023-11-21 21:00:08,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 279 states have (on average 1.4193548387096775) internal successors, (396), 310 states have internal predecessors, (396), 40 states have call successors, (40), 13 states have call predecessors, (40), 13 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-21 21:00:08,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 475 transitions. [2023-11-21 21:00:08,271 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 475 transitions. Word has length 10 [2023-11-21 21:00:08,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:00:08,271 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 475 transitions. [2023-11-21 21:00:08,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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) [2023-11-21 21:00:08,272 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 475 transitions. [2023-11-21 21:00:08,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-21 21:00:08,273 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:00:08,273 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:08,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:08,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:00:08,495 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_process_escape_sequenceErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_process_escape_sequenceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2023-11-21 21:00:08,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:08,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1703447226, now seen corresponding path program 2 times [2023-11-21 21:00:08,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:08,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469772739] [2023-11-21 21:00:08,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:08,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:08,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:08,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-21 21:00:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:08,904 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:08,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:08,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469772739] [2023-11-21 21:00:08,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469772739] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:00:08,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374146469] [2023-11-21 21:00:08,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 21:00:08,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:00:08,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:08,906 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:00:08,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 21:00:09,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-21 21:00:09,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 21:00:09,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 21:00:09,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:09,264 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-21 21:00:09,264 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:00:09,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374146469] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:09,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 21:00:09,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-11-21 21:00:09,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573426369] [2023-11-21 21:00:09,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:09,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 21:00:09,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:09,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 21:00:09,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-21 21:00:09,266 INFO L87 Difference]: Start difference. First operand 362 states and 475 transitions. Second operand has 4 states, 2 states have (on average 4.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2023-11-21 21:00:09,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:09,650 INFO L93 Difference]: Finished difference Result 362 states and 475 transitions. [2023-11-21 21:00:09,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 21:00:09,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 2 states have (on average 4.0) internal successors, (8), 4 states have internal predecessors, (8), 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 19 [2023-11-21 21:00:09,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:00:09,653 INFO L225 Difference]: With dead ends: 362 [2023-11-21 21:00:09,653 INFO L226 Difference]: Without dead ends: 360 [2023-11-21 21:00:09,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-21 21:00:09,655 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 126 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 21:00:09,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 1042 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 21:00:09,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2023-11-21 21:00:09,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2023-11-21 21:00:09,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 279 states have (on average 1.4121863799283154) internal successors, (394), 308 states have internal predecessors, (394), 40 states have call successors, (40), 13 states have call predecessors, (40), 13 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-21 21:00:09,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 473 transitions. [2023-11-21 21:00:09,674 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 473 transitions. Word has length 19 [2023-11-21 21:00:09,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:00:09,675 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 473 transitions. [2023-11-21 21:00:09,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 2 states have (on average 4.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2023-11-21 21:00:09,675 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 473 transitions. [2023-11-21 21:00:09,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-21 21:00:09,676 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:00:09,676 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:09,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:09,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-21 21:00:09,898 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_process_escape_sequenceErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_process_escape_sequenceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2023-11-21 21:00:09,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:09,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1362406353, now seen corresponding path program 1 times [2023-11-21 21:00:09,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:09,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439238945] [2023-11-21 21:00:09,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:09,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:09,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:10,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-21 21:00:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:10,174 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-21 21:00:10,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:10,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439238945] [2023-11-21 21:00:10,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439238945] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:10,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:10,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:00:10,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204723506] [2023-11-21 21:00:10,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:10,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:00:10,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:10,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:00:10,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:00:10,177 INFO L87 Difference]: Start difference. First operand 360 states and 473 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2023-11-21 21:00:10,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:10,466 INFO L93 Difference]: Finished difference Result 704 states and 931 transitions. [2023-11-21 21:00:10,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:00:10,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 24 [2023-11-21 21:00:10,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:00:10,470 INFO L225 Difference]: With dead ends: 704 [2023-11-21 21:00:10,471 INFO L226 Difference]: Without dead ends: 363 [2023-11-21 21:00:10,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:00:10,473 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 2 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 21:00:10,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 787 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 21:00:10,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2023-11-21 21:00:10,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2023-11-21 21:00:10,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 282 states have (on average 1.4078014184397163) internal successors, (397), 311 states have internal predecessors, (397), 40 states have call successors, (40), 13 states have call predecessors, (40), 13 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-21 21:00:10,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 476 transitions. [2023-11-21 21:00:10,497 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 476 transitions. Word has length 24 [2023-11-21 21:00:10,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:00:10,498 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 476 transitions. [2023-11-21 21:00:10,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2023-11-21 21:00:10,498 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 476 transitions. [2023-11-21 21:00:10,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-21 21:00:10,499 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:00:10,499 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:10,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 21:00:10,500 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_process_escape_sequenceErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_process_escape_sequenceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2023-11-21 21:00:10,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:10,500 INFO L85 PathProgramCache]: Analyzing trace with hash -625637185, now seen corresponding path program 1 times [2023-11-21 21:00:10,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:10,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96848518] [2023-11-21 21:00:10,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:10,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:10,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:10,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-21 21:00:10,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:10,703 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-21 21:00:10,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:10,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96848518] [2023-11-21 21:00:10,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96848518] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:10,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:10,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 21:00:10,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296125321] [2023-11-21 21:00:10,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:10,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:00:10,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:10,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:00:10,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:00:10,706 INFO L87 Difference]: Start difference. First operand 363 states and 476 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) [2023-11-21 21:00:10,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:10,984 INFO L93 Difference]: Finished difference Result 376 states and 491 transitions. [2023-11-21 21:00:10,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:00:10,985 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 [2023-11-21 21:00:10,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:00:10,988 INFO L225 Difference]: With dead ends: 376 [2023-11-21 21:00:10,988 INFO L226 Difference]: Without dead ends: 374 [2023-11-21 21:00:10,989 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 [2023-11-21 21:00:10,990 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 3 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 21:00:10,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 785 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 21:00:10,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2023-11-21 21:00:11,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 372. [2023-11-21 21:00:11,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 291 states have (on average 1.4089347079037802) internal successors, (410), 320 states have internal predecessors, (410), 40 states have call successors, (40), 13 states have call predecessors, (40), 13 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-21 21:00:11,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 489 transitions. [2023-11-21 21:00:11,010 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 489 transitions. Word has length 27 [2023-11-21 21:00:11,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:00:11,010 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 489 transitions. [2023-11-21 21:00:11,010 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) [2023-11-21 21:00:11,011 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 489 transitions. [2023-11-21 21:00:11,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-21 21:00:11,012 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:00:11,012 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:11,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 21:00:11,012 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_process_escape_sequenceErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_process_escape_sequenceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2023-11-21 21:00:11,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:11,013 INFO L85 PathProgramCache]: Analyzing trace with hash -625657995, now seen corresponding path program 1 times [2023-11-21 21:00:11,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:11,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468103076] [2023-11-21 21:00:11,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:11,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:11,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:11,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-21 21:00:11,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:11,257 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-21 21:00:11,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:11,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468103076] [2023-11-21 21:00:11,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468103076] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:00:11,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734244387] [2023-11-21 21:00:11,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:11,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:00:11,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:11,259 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:00:11,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-21 21:00:11,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:11,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 21:00:11,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:11,723 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 21:00:11,724 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 21:00:11,821 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 21:00:11,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734244387] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 21:00:11,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 21:00:11,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 7] total 14 [2023-11-21 21:00:11,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280137864] [2023-11-21 21:00:11,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 21:00:11,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-21 21:00:11,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:11,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-21 21:00:11,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2023-11-21 21:00:11,824 INFO L87 Difference]: Start difference. First operand 372 states and 489 transitions. Second operand has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-21 21:00:12,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:12,429 INFO L93 Difference]: Finished difference Result 747 states and 987 transitions. [2023-11-21 21:00:12,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-21 21:00:12,430 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2023-11-21 21:00:12,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:00:12,432 INFO L225 Difference]: With dead ends: 747 [2023-11-21 21:00:12,433 INFO L226 Difference]: Without dead ends: 389 [2023-11-21 21:00:12,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2023-11-21 21:00:12,435 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 6 mSDsluCounter, 1948 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2338 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-21 21:00:12,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2338 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-21 21:00:12,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2023-11-21 21:00:12,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2023-11-21 21:00:12,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 309 states have (on average 1.3786407766990292) internal successors, (426), 337 states have internal predecessors, (426), 40 states have call successors, (40), 13 states have call predecessors, (40), 13 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-21 21:00:12,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 505 transitions. [2023-11-21 21:00:12,455 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 505 transitions. Word has length 27 [2023-11-21 21:00:12,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:00:12,455 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 505 transitions. [2023-11-21 21:00:12,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-21 21:00:12,456 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 505 transitions. [2023-11-21 21:00:12,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-21 21:00:12,457 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:00:12,457 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:12,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:12,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:00:12,680 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_process_escape_sequenceErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_process_escape_sequenceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2023-11-21 21:00:12,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:12,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1749187650, now seen corresponding path program 1 times [2023-11-21 21:00:12,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:12,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421717820] [2023-11-21 21:00:12,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:12,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:12,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:12,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-21 21:00:12,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:12,972 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-21 21:00:12,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:12,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421717820] [2023-11-21 21:00:12,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421717820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:12,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:12,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 21:00:12,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041401341] [2023-11-21 21:00:12,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:12,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:00:12,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:12,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:00:12,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:00:12,975 INFO L87 Difference]: Start difference. First operand 389 states and 505 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-11-21 21:00:13,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:13,245 INFO L93 Difference]: Finished difference Result 394 states and 510 transitions. [2023-11-21 21:00:13,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:00:13,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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 46 [2023-11-21 21:00:13,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:00:13,249 INFO L225 Difference]: With dead ends: 394 [2023-11-21 21:00:13,249 INFO L226 Difference]: Without dead ends: 392 [2023-11-21 21:00:13,249 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 [2023-11-21 21:00:13,250 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 1 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 21:00:13,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 785 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 21:00:13,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2023-11-21 21:00:13,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2023-11-21 21:00:13,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 312 states have (on average 1.375) internal successors, (429), 340 states have internal predecessors, (429), 40 states have call successors, (40), 13 states have call predecessors, (40), 13 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-21 21:00:13,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 508 transitions. [2023-11-21 21:00:13,272 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 508 transitions. Word has length 46 [2023-11-21 21:00:13,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:00:13,272 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 508 transitions. [2023-11-21 21:00:13,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-11-21 21:00:13,273 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 508 transitions. [2023-11-21 21:00:13,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-21 21:00:13,274 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:00:13,274 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:13,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-21 21:00:13,275 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_process_escape_sequenceErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_process_escape_sequenceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2023-11-21 21:00:13,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:13,276 INFO L85 PathProgramCache]: Analyzing trace with hash -626745822, now seen corresponding path program 1 times [2023-11-21 21:00:13,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:13,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809705328] [2023-11-21 21:00:13,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:13,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:13,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:13,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-21 21:00:13,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:13,483 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-21 21:00:13,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:13,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809705328] [2023-11-21 21:00:13,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809705328] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:13,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:13,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 21:00:13,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553948685] [2023-11-21 21:00:13,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:13,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:00:13,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:13,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:00:13,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:00:13,486 INFO L87 Difference]: Start difference. First operand 392 states and 508 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-11-21 21:00:13,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:13,768 INFO L93 Difference]: Finished difference Result 392 states and 508 transitions. [2023-11-21 21:00:13,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:00:13,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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 46 [2023-11-21 21:00:13,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:00:13,772 INFO L225 Difference]: With dead ends: 392 [2023-11-21 21:00:13,773 INFO L226 Difference]: Without dead ends: 391 [2023-11-21 21:00:13,773 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 [2023-11-21 21:00:13,774 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 0 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 21:00:13,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 785 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 21:00:13,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2023-11-21 21:00:13,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 387. [2023-11-21 21:00:13,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 308 states have (on average 1.3733766233766234) internal successors, (423), 335 states have internal predecessors, (423), 40 states have call successors, (40), 13 states have call predecessors, (40), 13 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-21 21:00:13,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 502 transitions. [2023-11-21 21:00:13,796 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 502 transitions. Word has length 46 [2023-11-21 21:00:13,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:00:13,799 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 502 transitions. [2023-11-21 21:00:13,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-11-21 21:00:13,799 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 502 transitions. [2023-11-21 21:00:13,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-21 21:00:13,804 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:00:13,805 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:13,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-21 21:00:13,805 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_process_escape_sequenceErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_process_escape_sequenceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2023-11-21 21:00:13,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:13,806 INFO L85 PathProgramCache]: Analyzing trace with hash -787487483, now seen corresponding path program 1 times [2023-11-21 21:00:13,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:13,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281053539] [2023-11-21 21:00:13,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:13,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:14,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-21 21:00:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:14,091 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-21 21:00:14,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:14,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281053539] [2023-11-21 21:00:14,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281053539] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:00:14,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718755547] [2023-11-21 21:00:14,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:14,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:00:14,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:14,097 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:00:14,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-21 21:00:14,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:14,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 671 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 21:00:14,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:14,590 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2023-11-21 21:00:14,590 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:00:14,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718755547] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:14,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 21:00:14,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 6 [2023-11-21 21:00:14,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897208063] [2023-11-21 21:00:14,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:14,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 21:00:14,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:14,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 21:00:14,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 21:00:14,594 INFO L87 Difference]: Start difference. First operand 387 states and 502 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2023-11-21 21:00:15,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:15,050 INFO L93 Difference]: Finished difference Result 487 states and 643 transitions. [2023-11-21 21:00:15,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 21:00:15,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 49 [2023-11-21 21:00:15,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:00:15,055 INFO L225 Difference]: With dead ends: 487 [2023-11-21 21:00:15,055 INFO L226 Difference]: Without dead ends: 478 [2023-11-21 21:00:15,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-21 21:00:15,057 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 207 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 21:00:15,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 1181 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 21:00:15,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2023-11-21 21:00:15,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 389. [2023-11-21 21:00:15,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 310 states have (on average 1.3709677419354838) internal successors, (425), 337 states have internal predecessors, (425), 40 states have call successors, (40), 13 states have call predecessors, (40), 13 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-21 21:00:15,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 504 transitions. [2023-11-21 21:00:15,084 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 504 transitions. Word has length 49 [2023-11-21 21:00:15,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:00:15,085 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 504 transitions. [2023-11-21 21:00:15,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2023-11-21 21:00:15,085 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 504 transitions. [2023-11-21 21:00:15,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-21 21:00:15,087 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:00:15,088 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:15,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:15,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-21 21:00:15,292 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_process_escape_sequenceErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_process_escape_sequenceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2023-11-21 21:00:15,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:15,293 INFO L85 PathProgramCache]: Analyzing trace with hash 482801714, now seen corresponding path program 1 times [2023-11-21 21:00:15,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:15,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571742450] [2023-11-21 21:00:15,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:15,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:15,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-21 21:00:15,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:15,596 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-21 21:00:15,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:15,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571742450] [2023-11-21 21:00:15,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571742450] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:00:15,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627711441] [2023-11-21 21:00:15,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:15,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:00:15,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:15,599 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:00:15,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-21 21:00:16,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:16,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 21:00:16,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:16,128 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-21 21:00:16,128 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:00:16,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627711441] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:16,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 21:00:16,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3] total 7 [2023-11-21 21:00:16,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792561484] [2023-11-21 21:00:16,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:16,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 21:00:16,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:16,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 21:00:16,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-21 21:00:16,131 INFO L87 Difference]: Start difference. First operand 389 states and 504 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2023-11-21 21:00:16,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:16,562 INFO L93 Difference]: Finished difference Result 485 states and 643 transitions. [2023-11-21 21:00:16,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 21:00:16,563 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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 51 [2023-11-21 21:00:16,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:00:16,566 INFO L225 Difference]: With dead ends: 485 [2023-11-21 21:00:16,566 INFO L226 Difference]: Without dead ends: 474 [2023-11-21 21:00:16,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-21 21:00:16,567 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 106 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 21:00:16,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 1270 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 21:00:16,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2023-11-21 21:00:16,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 471. [2023-11-21 21:00:16,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 381 states have (on average 1.3779527559055118) internal successors, (525), 410 states have internal predecessors, (525), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-11-21 21:00:16,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 625 transitions. [2023-11-21 21:00:16,595 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 625 transitions. Word has length 51 [2023-11-21 21:00:16,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:00:16,596 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 625 transitions. [2023-11-21 21:00:16,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2023-11-21 21:00:16,596 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 625 transitions. [2023-11-21 21:00:16,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-21 21:00:16,597 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:00:16,597 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:16,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:16,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-21 21:00:16,816 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_process_escape_sequenceErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_process_escape_sequenceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2023-11-21 21:00:16,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:16,817 INFO L85 PathProgramCache]: Analyzing trace with hash 2021154904, now seen corresponding path program 1 times [2023-11-21 21:00:16,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:16,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608825443] [2023-11-21 21:00:16,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:16,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:17,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-21 21:00:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:17,104 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2023-11-21 21:00:17,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:17,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608825443] [2023-11-21 21:00:17,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608825443] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:00:17,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252242594] [2023-11-21 21:00:17,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:17,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:00:17,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:17,107 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:00:17,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-21 21:00:17,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:17,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 21:00:17,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:17,633 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2023-11-21 21:00:17,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 21:00:17,657 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2023-11-21 21:00:17,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252242594] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 21:00:17,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 21:00:17,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-21 21:00:17,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938187816] [2023-11-21 21:00:17,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 21:00:17,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 21:00:17,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:17,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 21:00:17,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-21 21:00:17,659 INFO L87 Difference]: Start difference. First operand 471 states and 625 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 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) [2023-11-21 21:00:18,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:18,007 INFO L93 Difference]: Finished difference Result 836 states and 1107 transitions. [2023-11-21 21:00:18,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 21:00:18,008 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 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 52 [2023-11-21 21:00:18,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:00:18,012 INFO L225 Difference]: With dead ends: 836 [2023-11-21 21:00:18,012 INFO L226 Difference]: Without dead ends: 489 [2023-11-21 21:00:18,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-21 21:00:18,014 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 4 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 21:00:18,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1177 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 21:00:18,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2023-11-21 21:00:18,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2023-11-21 21:00:18,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 399 states have (on average 1.3609022556390977) internal successors, (543), 428 states have internal predecessors, (543), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-11-21 21:00:18,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 643 transitions. [2023-11-21 21:00:18,045 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 643 transitions. Word has length 52 [2023-11-21 21:00:18,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:00:18,045 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 643 transitions. [2023-11-21 21:00:18,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 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) [2023-11-21 21:00:18,046 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 643 transitions. [2023-11-21 21:00:18,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-21 21:00:18,046 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:00:18,047 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:18,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-21 21:00:18,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-21 21:00:18,268 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_process_escape_sequenceErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_process_escape_sequenceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2023-11-21 21:00:18,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:18,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1756537777, now seen corresponding path program 1 times [2023-11-21 21:00:18,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:18,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243991823] [2023-11-21 21:00:18,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:18,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:18,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-21 21:00:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:18,749 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-21 21:00:18,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:18,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243991823] [2023-11-21 21:00:18,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243991823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:18,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:18,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 21:00:18,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731311791] [2023-11-21 21:00:18,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:18,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 21:00:18,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:18,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 21:00:18,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 21:00:18,752 INFO L87 Difference]: Start difference. First operand 489 states and 643 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 21:00:19,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:19,077 INFO L93 Difference]: Finished difference Result 892 states and 1203 transitions. [2023-11-21 21:00:19,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 21:00:19,078 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2023-11-21 21:00:19,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:00:19,082 INFO L225 Difference]: With dead ends: 892 [2023-11-21 21:00:19,082 INFO L226 Difference]: Without dead ends: 492 [2023-11-21 21:00:19,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:00:19,085 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 444 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 21:00:19,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 780 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 21:00:19,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2023-11-21 21:00:19,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 491. [2023-11-21 21:00:19,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 401 states have (on average 1.3541147132169575) internal successors, (543), 430 states have internal predecessors, (543), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-11-21 21:00:19,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 643 transitions. [2023-11-21 21:00:19,118 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 643 transitions. Word has length 57 [2023-11-21 21:00:19,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:00:19,119 INFO L495 AbstractCegarLoop]: Abstraction has 491 states and 643 transitions. [2023-11-21 21:00:19,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 21:00:19,119 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 643 transitions. [2023-11-21 21:00:19,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-21 21:00:19,121 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:00:19,121 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:19,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-21 21:00:19,121 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_process_escape_sequenceErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_process_escape_sequenceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2023-11-21 21:00:19,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:19,122 INFO L85 PathProgramCache]: Analyzing trace with hash -2117168295, now seen corresponding path program 1 times [2023-11-21 21:00:19,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:19,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617806827] [2023-11-21 21:00:19,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:19,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:19,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:19,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-21 21:00:19,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:19,351 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-21 21:00:19,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:19,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617806827] [2023-11-21 21:00:19,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617806827] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:19,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:19,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 21:00:19,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661292103] [2023-11-21 21:00:19,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:19,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:00:19,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:19,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:00:19,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:00:19,354 INFO L87 Difference]: Start difference. First operand 491 states and 643 transitions. Second operand has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 21:00:19,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:19,673 INFO L93 Difference]: Finished difference Result 500 states and 655 transitions. [2023-11-21 21:00:19,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:00:19,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2023-11-21 21:00:19,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:00:19,677 INFO L225 Difference]: With dead ends: 500 [2023-11-21 21:00:19,677 INFO L226 Difference]: Without dead ends: 498 [2023-11-21 21:00:19,678 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 [2023-11-21 21:00:19,679 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 4 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 21:00:19,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 779 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 21:00:19,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2023-11-21 21:00:19,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 495. [2023-11-21 21:00:19,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 405 states have (on average 1.3555555555555556) internal successors, (549), 434 states have internal predecessors, (549), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-11-21 21:00:19,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 649 transitions. [2023-11-21 21:00:19,713 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 649 transitions. Word has length 58 [2023-11-21 21:00:19,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:00:19,714 INFO L495 AbstractCegarLoop]: Abstraction has 495 states and 649 transitions. [2023-11-21 21:00:19,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 21:00:19,714 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 649 transitions. [2023-11-21 21:00:19,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-21 21:00:19,715 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:00:19,715 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:19,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-21 21:00:19,716 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_process_escape_sequenceErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_process_escape_sequenceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2023-11-21 21:00:19,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:19,716 INFO L85 PathProgramCache]: Analyzing trace with hash -2117186563, now seen corresponding path program 1 times [2023-11-21 21:00:19,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:19,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499922843] [2023-11-21 21:00:19,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:19,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:19,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-21 21:00:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:20,004 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-21 21:00:20,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:20,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499922843] [2023-11-21 21:00:20,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499922843] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:20,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:20,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 21:00:20,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989986268] [2023-11-21 21:00:20,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:20,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 21:00:20,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:20,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 21:00:20,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 21:00:20,008 INFO L87 Difference]: Start difference. First operand 495 states and 649 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 21:00:20,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:20,425 INFO L93 Difference]: Finished difference Result 907 states and 1218 transitions. [2023-11-21 21:00:20,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 21:00:20,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2023-11-21 21:00:20,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:00:20,431 INFO L225 Difference]: With dead ends: 907 [2023-11-21 21:00:20,431 INFO L226 Difference]: Without dead ends: 501 [2023-11-21 21:00:20,434 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 [2023-11-21 21:00:20,435 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 6 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 21:00:20,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1146 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 21:00:20,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2023-11-21 21:00:20,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 497. [2023-11-21 21:00:20,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 407 states have (on average 1.3538083538083538) internal successors, (551), 436 states have internal predecessors, (551), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-11-21 21:00:20,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 651 transitions. [2023-11-21 21:00:20,467 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 651 transitions. Word has length 58 [2023-11-21 21:00:20,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:00:20,467 INFO L495 AbstractCegarLoop]: Abstraction has 497 states and 651 transitions. [2023-11-21 21:00:20,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 21:00:20,468 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 651 transitions. [2023-11-21 21:00:20,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-21 21:00:20,470 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:00:20,470 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:20,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-21 21:00:20,471 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_process_escape_sequenceErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_process_escape_sequenceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2023-11-21 21:00:20,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:20,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1340717511, now seen corresponding path program 1 times [2023-11-21 21:00:20,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:20,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099919055] [2023-11-21 21:00:20,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:20,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:20,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-21 21:00:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:20,875 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-21 21:00:20,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:20,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099919055] [2023-11-21 21:00:20,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099919055] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:20,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:20,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 21:00:20,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366957652] [2023-11-21 21:00:20,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:20,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:00:20,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:20,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:00:20,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:00:20,878 INFO L87 Difference]: Start difference. First operand 497 states and 651 transitions. Second operand has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 21:00:21,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:21,156 INFO L93 Difference]: Finished difference Result 497 states and 651 transitions. [2023-11-21 21:00:21,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:00:21,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 60 [2023-11-21 21:00:21,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:00:21,160 INFO L225 Difference]: With dead ends: 497 [2023-11-21 21:00:21,160 INFO L226 Difference]: Without dead ends: 496 [2023-11-21 21:00:21,161 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 [2023-11-21 21:00:21,161 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 2 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 21:00:21,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 780 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 21:00:21,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2023-11-21 21:00:21,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 496. [2023-11-21 21:00:21,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 407 states have (on average 1.3513513513513513) internal successors, (550), 435 states have internal predecessors, (550), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-11-21 21:00:21,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 650 transitions. [2023-11-21 21:00:21,191 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 650 transitions. Word has length 60 [2023-11-21 21:00:21,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:00:21,192 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 650 transitions. [2023-11-21 21:00:21,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 21:00:21,192 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 650 transitions. [2023-11-21 21:00:21,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-21 21:00:21,193 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:00:21,193 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:21,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-21 21:00:21,194 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting bb_ascii_isalnumErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_process_escape_sequenceErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_process_escape_sequenceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2023-11-21 21:00:21,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:21,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1387429905, now seen corresponding path program 1 times [2023-11-21 21:00:21,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:21,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431941959] [2023-11-21 21:00:21,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:21,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:21,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-21 21:00:21,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:21,512 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-21 21:00:21,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:21,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431941959] [2023-11-21 21:00:21,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431941959] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:21,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:21,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 21:00:21,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769428079] [2023-11-21 21:00:21,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:21,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:00:21,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:21,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:00:21,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:00:21,515 INFO L87 Difference]: Start difference. First operand 496 states and 650 transitions. Second operand has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 21:00:21,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:21,777 INFO L93 Difference]: Finished difference Result 496 states and 650 transitions. [2023-11-21 21:00:21,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:00:21,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2023-11-21 21:00:21,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:00:21,781 INFO L225 Difference]: With dead ends: 496 [2023-11-21 21:00:21,781 INFO L226 Difference]: Without dead ends: 495 [2023-11-21 21:00:21,782 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 [2023-11-21 21:00:21,782 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 0 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 21:00:21,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 780 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 21:00:21,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2023-11-21 21:00:21,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 495. [2023-11-21 21:00:21,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 407 states have (on average 1.348894348894349) internal successors, (549), 434 states have internal predecessors, (549), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-11-21 21:00:21,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 649 transitions. [2023-11-21 21:00:21,812 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 649 transitions. Word has length 61 [2023-11-21 21:00:21,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:00:21,813 INFO L495 AbstractCegarLoop]: Abstraction has 495 states and 649 transitions. [2023-11-21 21:00:21,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 21:00:21,813 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 649 transitions. [2023-11-21 21:00:21,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-21 21:00:21,814 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:00:21,814 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:21,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-21 21:00:21,815 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_process_escape_sequenceErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_process_escape_sequenceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2023-11-21 21:00:21,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:21,816 INFO L85 PathProgramCache]: Analyzing trace with hash 767432939, now seen corresponding path program 1 times [2023-11-21 21:00:21,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:21,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523343984] [2023-11-21 21:00:21,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:21,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:22,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-21 21:00:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:22,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-21 21:00:22,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:22,281 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-21 21:00:22,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:22,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523343984] [2023-11-21 21:00:22,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523343984] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:22,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:22,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:00:22,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109337066] [2023-11-21 21:00:22,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:22,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 21:00:22,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:22,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 21:00:22,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 21:00:22,286 INFO L87 Difference]: Start difference. First operand 495 states and 649 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 21:00:23,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:23,194 INFO L93 Difference]: Finished difference Result 514 states and 682 transitions. [2023-11-21 21:00:23,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 21:00:23,194 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 63 [2023-11-21 21:00:23,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:00:23,198 INFO L225 Difference]: With dead ends: 514 [2023-11-21 21:00:23,198 INFO L226 Difference]: Without dead ends: 512 [2023-11-21 21:00:23,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 21:00:23,200 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 85 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-21 21:00:23,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 879 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-21 21:00:23,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2023-11-21 21:00:23,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 493. [2023-11-21 21:00:23,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 407 states have (on average 1.343980343980344) internal successors, (547), 432 states have internal predecessors, (547), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-11-21 21:00:23,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 647 transitions. [2023-11-21 21:00:23,237 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 647 transitions. Word has length 63 [2023-11-21 21:00:23,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:00:23,238 INFO L495 AbstractCegarLoop]: Abstraction has 493 states and 647 transitions. [2023-11-21 21:00:23,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 21:00:23,238 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 647 transitions. [2023-11-21 21:00:23,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-21 21:00:23,239 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:00:23,239 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:23,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-21 21:00:23,240 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_process_escape_sequenceErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_process_escape_sequenceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2023-11-21 21:00:23,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:23,241 INFO L85 PathProgramCache]: Analyzing trace with hash 144924818, now seen corresponding path program 1 times [2023-11-21 21:00:23,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:23,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491029591] [2023-11-21 21:00:23,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:23,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:23,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:23,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-21 21:00:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:23,554 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-21 21:00:23,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:23,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491029591] [2023-11-21 21:00:23,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491029591] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:00:23,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109449869] [2023-11-21 21:00:23,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:23,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:00:23,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:23,556 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:00:23,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-21 21:00:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:24,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 874 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 21:00:24,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:24,176 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-21 21:00:24,176 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:00:24,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109449869] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:24,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 21:00:24,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-21 21:00:24,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506533025] [2023-11-21 21:00:24,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:24,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 21:00:24,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:24,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 21:00:24,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:00:24,179 INFO L87 Difference]: Start difference. First operand 493 states and 647 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 21:00:24,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:24,462 INFO L93 Difference]: Finished difference Result 497 states and 652 transitions. [2023-11-21 21:00:24,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 21:00:24,463 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2023-11-21 21:00:24,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:00:24,466 INFO L225 Difference]: With dead ends: 497 [2023-11-21 21:00:24,466 INFO L226 Difference]: Without dead ends: 496 [2023-11-21 21:00:24,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:00:24,468 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 9 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 21:00:24,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 772 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 21:00:24,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2023-11-21 21:00:24,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 492. [2023-11-21 21:00:24,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 407 states have (on average 1.3415233415233416) internal successors, (546), 431 states have internal predecessors, (546), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-11-21 21:00:24,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 646 transitions. [2023-11-21 21:00:24,498 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 646 transitions. Word has length 62 [2023-11-21 21:00:24,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:00:24,498 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 646 transitions. [2023-11-21 21:00:24,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 21:00:24,499 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 646 transitions. [2023-11-21 21:00:24,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-21 21:00:24,500 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:00:24,500 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:24,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:24,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-21 21:00:24,716 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting bb_verror_msgErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_process_escape_sequenceErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_process_escape_sequenceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2023-11-21 21:00:24,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:24,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1979381861, now seen corresponding path program 1 times [2023-11-21 21:00:24,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:24,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563702353] [2023-11-21 21:00:24,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:24,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:24,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:25,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-21 21:00:25,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:25,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-21 21:00:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:25,383 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-21 21:00:25,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:25,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563702353] [2023-11-21 21:00:25,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563702353] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:25,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:25,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 21:00:25,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547909888] [2023-11-21 21:00:25,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:25,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 21:00:25,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:25,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 21:00:25,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 21:00:25,386 INFO L87 Difference]: Start difference. First operand 492 states and 646 transitions. Second operand has 6 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 21:00:26,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:26,489 INFO L93 Difference]: Finished difference Result 755 states and 986 transitions. [2023-11-21 21:00:26,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 21:00:26,489 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 64 [2023-11-21 21:00:26,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:00:26,493 INFO L225 Difference]: With dead ends: 755 [2023-11-21 21:00:26,493 INFO L226 Difference]: Without dead ends: 429 [2023-11-21 21:00:26,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-21 21:00:26,495 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 205 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-21 21:00:26,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 1253 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-21 21:00:26,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2023-11-21 21:00:26,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 410. [2023-11-21 21:00:26,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 336 states have (on average 1.3244047619047619) internal successors, (445), 358 states have internal predecessors, (445), 40 states have call successors, (40), 13 states have call predecessors, (40), 13 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-21 21:00:26,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 524 transitions. [2023-11-21 21:00:26,521 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 524 transitions. Word has length 64 [2023-11-21 21:00:26,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:00:26,521 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 524 transitions. [2023-11-21 21:00:26,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 21:00:26,522 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 524 transitions. [2023-11-21 21:00:26,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-21 21:00:26,522 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:00:26,523 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:26,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-21 21:00:26,523 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_process_escape_sequenceErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_process_escape_sequenceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2023-11-21 21:00:26,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:26,524 INFO L85 PathProgramCache]: Analyzing trace with hash -20974437, now seen corresponding path program 1 times [2023-11-21 21:00:26,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:26,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208040531] [2023-11-21 21:00:26,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:26,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:26,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:26,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-21 21:00:26,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:26,799 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-11-21 21:00:26,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:26,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208040531] [2023-11-21 21:00:26,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208040531] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:00:26,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618282507] [2023-11-21 21:00:26,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:26,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:00:26,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:26,802 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:00:26,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-21 21:00:27,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:27,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 21:00:27,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:27,554 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2023-11-21 21:00:27,555 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 21:00:27,663 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2023-11-21 21:00:27,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618282507] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 21:00:27,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 21:00:27,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 14 [2023-11-21 21:00:27,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420404043] [2023-11-21 21:00:27,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 21:00:27,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-21 21:00:27,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:27,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-21 21:00:27,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2023-11-21 21:00:27,666 INFO L87 Difference]: Start difference. First operand 410 states and 524 transitions. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 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) [2023-11-21 21:00:28,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:28,234 INFO L93 Difference]: Finished difference Result 804 states and 1042 transitions. [2023-11-21 21:00:28,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-21 21:00:28,235 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 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 67 [2023-11-21 21:00:28,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:00:28,238 INFO L225 Difference]: With dead ends: 804 [2023-11-21 21:00:28,238 INFO L226 Difference]: Without dead ends: 445 [2023-11-21 21:00:28,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2023-11-21 21:00:28,241 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 6 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1901 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-21 21:00:28,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1901 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-21 21:00:28,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2023-11-21 21:00:28,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2023-11-21 21:00:28,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 372 states have (on average 1.2903225806451613) internal successors, (480), 393 states have internal predecessors, (480), 40 states have call successors, (40), 13 states have call predecessors, (40), 13 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-21 21:00:28,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 559 transitions. [2023-11-21 21:00:28,276 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 559 transitions. Word has length 67 [2023-11-21 21:00:28,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:00:28,277 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 559 transitions. [2023-11-21 21:00:28,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 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) [2023-11-21 21:00:28,277 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 559 transitions. [2023-11-21 21:00:28,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-21 21:00:28,278 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:00:28,278 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:28,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:28,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:00:28,488 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_process_escape_sequenceErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_process_escape_sequenceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2023-11-21 21:00:28,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:28,488 INFO L85 PathProgramCache]: Analyzing trace with hash 893568617, now seen corresponding path program 1 times [2023-11-21 21:00:28,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:28,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372419838] [2023-11-21 21:00:28,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:28,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:28,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:28,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-21 21:00:28,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:28,819 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-21 21:00:28,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:28,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372419838] [2023-11-21 21:00:28,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372419838] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:00:28,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123939478] [2023-11-21 21:00:28,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:28,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:00:28,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:28,821 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:00:28,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-21 21:00:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:29,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 976 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 21:00:29,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:29,570 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-21 21:00:29,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 21:00:29,596 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-21 21:00:29,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123939478] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 21:00:29,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 21:00:29,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-21 21:00:29,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701713336] [2023-11-21 21:00:29,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 21:00:29,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 21:00:29,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:29,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 21:00:29,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-21 21:00:29,600 INFO L87 Difference]: Start difference. First operand 445 states and 559 transitions. Second operand has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 7 states have internal predecessors, (41), 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) [2023-11-21 21:00:29,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:29,982 INFO L93 Difference]: Finished difference Result 455 states and 571 transitions. [2023-11-21 21:00:29,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 21:00:29,983 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 7 states have internal predecessors, (41), 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 86 [2023-11-21 21:00:29,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:00:29,986 INFO L225 Difference]: With dead ends: 455 [2023-11-21 21:00:29,986 INFO L226 Difference]: Without dead ends: 454 [2023-11-21 21:00:29,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-21 21:00:29,988 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 0 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 21:00:29,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1151 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 21:00:29,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2023-11-21 21:00:30,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 454. [2023-11-21 21:00:30,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 381 states have (on average 1.2834645669291338) internal successors, (489), 402 states have internal predecessors, (489), 40 states have call successors, (40), 13 states have call predecessors, (40), 13 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-21 21:00:30,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 568 transitions. [2023-11-21 21:00:30,023 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 568 transitions. Word has length 86 [2023-11-21 21:00:30,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:00:30,024 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 568 transitions. [2023-11-21 21:00:30,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 7 states have internal predecessors, (41), 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) [2023-11-21 21:00:30,024 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 568 transitions. [2023-11-21 21:00:30,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-21 21:00:30,026 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:00:30,026 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:30,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:30,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:00:30,241 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting bb_verror_msgErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_process_escape_sequenceErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_process_escape_sequenceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2023-11-21 21:00:30,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:30,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1851678674, now seen corresponding path program 1 times [2023-11-21 21:00:30,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:30,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212956767] [2023-11-21 21:00:30,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:30,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:30,832 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:00:31,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:31,698 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 21:00:31,698 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 21:00:31,699 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location bb_verror_msgErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 44 remaining) [2023-11-21 21:00:31,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_process_escape_sequenceErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 44 remaining) [2023-11-21 21:00:31,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_process_escape_sequenceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 44 remaining) [2023-11-21 21:00:31,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 44 remaining) [2023-11-21 21:00:31,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 44 remaining) [2023-11-21 21:00:31,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 44 remaining) [2023-11-21 21:00:31,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_ascii_isalnumErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 44 remaining) [2023-11-21 21:00:31,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 44 remaining) [2023-11-21 21:00:31,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 44 remaining) [2023-11-21 21:00:31,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 44 remaining) [2023-11-21 21:00:31,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_verror_msgErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 44 remaining) [2023-11-21 21:00:31,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_verror_msgErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 44 remaining) [2023-11-21 21:00:31,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_verror_msgErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 44 remaining) [2023-11-21 21:00:31,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_verror_msgErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 44 remaining) [2023-11-21 21:00:31,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_verror_msgErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 44 remaining) [2023-11-21 21:00:31,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_verror_msgErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 44 remaining) [2023-11-21 21:00:31,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_verror_msgErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 44 remaining) [2023-11-21 21:00:31,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_verror_msgErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 44 remaining) [2023-11-21 21:00:31,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_verror_msgErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 44 remaining) [2023-11-21 21:00:31,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_verror_msgErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 44 remaining) [2023-11-21 21:00:31,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_verror_msgErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 44 remaining) [2023-11-21 21:00:31,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_verror_msgErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 44 remaining) [2023-11-21 21:00:31,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_verror_msgErr16ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 44 remaining) [2023-11-21 21:00:31,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_verror_msgErr17ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 44 remaining) [2023-11-21 21:00:31,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_verror_msgErr18ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 44 remaining) [2023-11-21 21:00:31,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_verror_msgErr19ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 44 remaining) [2023-11-21 21:00:31,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 44 remaining) [2023-11-21 21:00:31,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 44 remaining) [2023-11-21 21:00:31,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 44 remaining) [2023-11-21 21:00:31,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 44 remaining) [2023-11-21 21:00:31,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 44 remaining) [2023-11-21 21:00:31,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 44 remaining) [2023-11-21 21:00:31,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 44 remaining) [2023-11-21 21:00:31,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 44 remaining) [2023-11-21 21:00:31,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 44 remaining) [2023-11-21 21:00:31,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 44 remaining) [2023-11-21 21:00:31,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 44 remaining) [2023-11-21 21:00:31,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 44 remaining) [2023-11-21 21:00:31,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 44 remaining) [2023-11-21 21:00:31,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 44 remaining) [2023-11-21 21:00:31,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 44 remaining) [2023-11-21 21:00:31,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 44 remaining) [2023-11-21 21:00:31,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 44 remaining) [2023-11-21 21:00:31,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 44 remaining) [2023-11-21 21:00:31,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-21 21:00:31,716 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:31,720 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 21:00:31,807 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-21 21:00:31,815 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-21 21:00:31,816 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-21 21:00:31,817 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem295 [2023-11-21 21:00:31,817 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem296 could not be translated [2023-11-21 21:00:31,817 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem298 could not be translated [2023-11-21 21:00:31,818 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem294 could not be translated [2023-11-21 21:00:31,818 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem297 [2023-11-21 21:00:31,818 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem299 [2023-11-21 21:00:31,818 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem293 [2023-11-21 21:00:31,819 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem294 could not be translated [2023-11-21 21:00:31,819 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem300 could not be translated [2023-11-21 21:00:31,819 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem293 [2023-11-21 21:00:31,819 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem295 [2023-11-21 21:00:31,819 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem297 [2023-11-21 21:00:31,820 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem298 could not be translated [2023-11-21 21:00:31,820 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem296 could not be translated [2023-11-21 21:00:31,820 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #varArgs [2023-11-21 21:00:31,822 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-21 21:00:31,822 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem355 [2023-11-21 21:00:31,823 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~strcpy~res356 [2023-11-21 21:00:31,823 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem355 [2023-11-21 21:00:31,824 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem112 [2023-11-21 21:00:31,825 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem112 [2023-11-21 21:00:31,845 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 09:00:31 BoogieIcfgContainer [2023-11-21 21:00:31,845 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 21:00:31,846 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 21:00:31,846 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 21:00:31,846 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 21:00:31,847 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:00:03" (3/4) ... [2023-11-21 21:00:31,849 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 21:00:31,850 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 21:00:31,851 INFO L158 Benchmark]: Toolchain (without parser) took 34688.37ms. Allocated memory was 113.2MB in the beginning and 476.1MB in the end (delta: 362.8MB). Free memory was 65.9MB in the beginning and 279.3MB in the end (delta: -213.4MB). Peak memory consumption was 150.3MB. Max. memory is 16.1GB. [2023-11-21 21:00:31,851 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 113.2MB. Free memory is still 85.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 21:00:31,851 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2286.68ms. Allocated memory was 113.2MB in the beginning and 148.9MB in the end (delta: 35.7MB). Free memory was 65.5MB in the beginning and 93.6MB in the end (delta: -28.0MB). Peak memory consumption was 43.1MB. Max. memory is 16.1GB. [2023-11-21 21:00:31,852 INFO L158 Benchmark]: Boogie Procedure Inliner took 199.76ms. Allocated memory is still 148.9MB. Free memory was 93.6MB in the beginning and 81.7MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-21 21:00:31,852 INFO L158 Benchmark]: Boogie Preprocessor took 251.34ms. Allocated memory is still 148.9MB. Free memory was 81.7MB in the beginning and 69.0MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-21 21:00:31,852 INFO L158 Benchmark]: RCFGBuilder took 3118.35ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 69.0MB in the beginning and 68.6MB in the end (delta: 411.3kB). Peak memory consumption was 37.4MB. Max. memory is 16.1GB. [2023-11-21 21:00:31,853 INFO L158 Benchmark]: TraceAbstraction took 28815.69ms. Allocated memory was 180.4MB in the beginning and 476.1MB in the end (delta: 295.7MB). Free memory was 67.5MB in the beginning and 279.3MB in the end (delta: -211.8MB). Peak memory consumption was 233.9MB. Max. memory is 16.1GB. [2023-11-21 21:00:31,853 INFO L158 Benchmark]: Witness Printer took 4.44ms. Allocated memory is still 476.1MB. Free memory is still 279.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 21:00:31,855 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 113.2MB. Free memory is still 85.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2286.68ms. Allocated memory was 113.2MB in the beginning and 148.9MB in the end (delta: 35.7MB). Free memory was 65.5MB in the beginning and 93.6MB in the end (delta: -28.0MB). Peak memory consumption was 43.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 199.76ms. Allocated memory is still 148.9MB. Free memory was 93.6MB in the beginning and 81.7MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 251.34ms. Allocated memory is still 148.9MB. Free memory was 81.7MB in the beginning and 69.0MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * RCFGBuilder took 3118.35ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 69.0MB in the beginning and 68.6MB in the end (delta: 411.3kB). Peak memory consumption was 37.4MB. Max. memory is 16.1GB. * TraceAbstraction took 28815.69ms. Allocated memory was 180.4MB in the beginning and 476.1MB in the end (delta: 295.7MB). Free memory was 67.5MB in the beginning and 279.3MB in the end (delta: -211.8MB). Peak memory consumption was 233.9MB. Max. memory is 16.1GB. * Witness Printer took 4.44ms. Allocated memory is still 476.1MB. Free memory is still 279.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem295 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem296 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem298 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem294 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem297 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem299 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem293 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem294 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem300 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem293 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem295 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem297 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem298 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem296 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #varArgs - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem355 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~strcpy~res356 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem355 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem112 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem112 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 2596]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of strlen at line 2580. Possible FailurePath: [L2370] static const char *applet_name; [L2371] static signed int bb_errno_location; [L2372] static signed int * const bb_errno = &bb_errno_location; [L2373] static const char bb_msg_memory_exhausted[14l] = { (const char)111, (const char)117, (const char)116, (const char)32, (const char)111, (const char)102, (const char)32, (const char)109, (const char)101, (const char)109, (const char)111, (const char)114, (const char)121, (const char)0 }; [L2374] static struct __jmp_buf_tag die_jmp[1l]; [L2375] static signed int die_sleep; [L2376] static char local_buf[(signed long int)(sizeof(signed int) * 3) ]; [L2377] static signed char logmode = (signed char)1; [L2378] static const char *msg_eol = "\n"; [L2379] static unsigned char xfunc_error_retval = (unsigned char)1; [L2445] static const char charmap[20l] = { (const char)97, (const char)98, (const char)101, (const char)102, (const char)110, (const char)114, (const char)116, (const char)118, (const char)92, (const char)0, (const char)7, (const char)8, (const char)27, (const char)12, (const char)10, (const char)13, (const char)9, (const char)11, (const char)92, (const char)92 }; [L3133] static const char format_chars[14l] = { (const char)100, (const char)105, (const char)111, (const char)117, (const char)120, (const char)88, (const char)102, (const char)101, (const char)69, (const char)103, (const char)71, (const char)99, (const char)115, (const char)0 }; [L3336] static struct utmp dummy_utmp; [L3421] char *a = malloc(11); [L3422] a[10] = 0 [L3423] int i=0; VAL [a={21:0}, applet_name={0:0}, bb_errno={13:0}, bb_errno_location={13:0}, bb_msg_memory_exhausted={14:0}, charmap={17:0}, die_jmp={15:0}, die_sleep=0, dummy_utmp={19:0}, format_chars={18:0}, i=0, local_buf={16:0}, logmode=1, msg_eol={3:0}, xfunc_error_retval=1] [L3423] COND TRUE i<10 [L3424] a[i]=__VERIFIER_nondet_char() [L3423] ++i VAL [a={21:0}, applet_name={0:0}, bb_errno={13:0}, bb_errno_location={13:0}, bb_msg_memory_exhausted={14:0}, charmap={17:0}, die_jmp={15:0}, die_sleep=0, dummy_utmp={19:0}, format_chars={18:0}, i=1, local_buf={16:0}, logmode=1, msg_eol={3:0}, xfunc_error_retval=1] [L3423] COND TRUE i<10 [L3424] a[i]=__VERIFIER_nondet_char() [L3423] ++i VAL [a={21:0}, applet_name={0:0}, bb_errno={13:0}, bb_errno_location={13:0}, bb_msg_memory_exhausted={14:0}, charmap={17:0}, die_jmp={15:0}, die_sleep=0, dummy_utmp={19:0}, format_chars={18:0}, i=2, local_buf={16:0}, logmode=1, msg_eol={3:0}, xfunc_error_retval=1] [L3423] COND TRUE i<10 [L3424] a[i]=__VERIFIER_nondet_char() [L3423] ++i VAL [a={21:0}, applet_name={0:0}, bb_errno={13:0}, bb_errno_location={13:0}, bb_msg_memory_exhausted={14:0}, charmap={17:0}, die_jmp={15:0}, die_sleep=0, dummy_utmp={19:0}, format_chars={18:0}, i=3, local_buf={16:0}, logmode=1, msg_eol={3:0}, xfunc_error_retval=1] [L3423] COND TRUE i<10 [L3424] a[i]=__VERIFIER_nondet_char() [L3423] ++i VAL [a={21:0}, applet_name={0:0}, bb_errno={13:0}, bb_errno_location={13:0}, bb_msg_memory_exhausted={14:0}, charmap={17:0}, die_jmp={15:0}, die_sleep=0, dummy_utmp={19:0}, format_chars={18:0}, i=4, local_buf={16:0}, logmode=1, msg_eol={3:0}, xfunc_error_retval=1] [L3423] COND TRUE i<10 [L3424] a[i]=__VERIFIER_nondet_char() [L3423] ++i VAL [a={21:0}, applet_name={0:0}, bb_errno={13:0}, bb_errno_location={13:0}, bb_msg_memory_exhausted={14:0}, charmap={17:0}, die_jmp={15:0}, die_sleep=0, dummy_utmp={19:0}, format_chars={18:0}, i=5, local_buf={16:0}, logmode=1, msg_eol={3:0}, xfunc_error_retval=1] [L3423] COND TRUE i<10 [L3424] a[i]=__VERIFIER_nondet_char() [L3423] ++i VAL [a={21:0}, applet_name={0:0}, bb_errno={13:0}, bb_errno_location={13:0}, bb_msg_memory_exhausted={14:0}, charmap={17:0}, die_jmp={15:0}, die_sleep=0, dummy_utmp={19:0}, format_chars={18:0}, i=6, local_buf={16:0}, logmode=1, msg_eol={3:0}, xfunc_error_retval=1] [L3423] COND TRUE i<10 [L3424] a[i]=__VERIFIER_nondet_char() [L3423] ++i VAL [a={21:0}, applet_name={0:0}, bb_errno={13:0}, bb_errno_location={13:0}, bb_msg_memory_exhausted={14:0}, charmap={17:0}, die_jmp={15:0}, die_sleep=0, dummy_utmp={19:0}, format_chars={18:0}, i=7, local_buf={16:0}, logmode=1, msg_eol={3:0}, xfunc_error_retval=1] [L3423] COND TRUE i<10 [L3424] a[i]=__VERIFIER_nondet_char() [L3423] ++i VAL [a={21:0}, applet_name={0:0}, bb_errno={13:0}, bb_errno_location={13:0}, bb_msg_memory_exhausted={14:0}, charmap={17:0}, die_jmp={15:0}, die_sleep=0, dummy_utmp={19:0}, format_chars={18:0}, i=8, local_buf={16:0}, logmode=1, msg_eol={3:0}, xfunc_error_retval=1] [L3423] COND TRUE i<10 [L3424] a[i]=__VERIFIER_nondet_char() [L3423] ++i VAL [a={21:0}, applet_name={0:0}, bb_errno={13:0}, bb_errno_location={13:0}, bb_msg_memory_exhausted={14:0}, charmap={17:0}, die_jmp={15:0}, die_sleep=0, dummy_utmp={19:0}, format_chars={18:0}, i=9, local_buf={16:0}, logmode=1, msg_eol={3:0}, xfunc_error_retval=1] [L3423] COND TRUE i<10 [L3424] a[i]=__VERIFIER_nondet_char() [L3423] ++i VAL [a={21:0}, applet_name={0:0}, bb_errno={13:0}, bb_errno_location={13:0}, bb_msg_memory_exhausted={14:0}, charmap={17:0}, die_jmp={15:0}, die_sleep=0, dummy_utmp={19:0}, format_chars={18:0}, i=10, local_buf={16:0}, logmode=1, msg_eol={3:0}, xfunc_error_retval=1] [L3423] COND FALSE !(i<10) [L3425] applet_name = a [L3426] bb_errno_location = __VERIFIER_nondet_int() [L3427] optind = 1 [L3428] int argc = __VERIFIER_nondet_int(); [L3429] CALL assume_abort_if_not(argc >= 1 && argc <= 10000) VAL [\old(cond)=1, applet_name={21:0}, bb_errno={13:0}, bb_errno_location={13:0}, bb_msg_memory_exhausted={14:0}, charmap={17:0}, die_jmp={15:0}, die_sleep=0, dummy_utmp={19:0}, format_chars={18:0}, local_buf={16:0}, logmode=1, msg_eol={3:0}, optind=1, xfunc_error_retval=1] [L9] COND FALSE !(!cond) [L3429] RET assume_abort_if_not(argc >= 1 && argc <= 10000) VAL [a={21:0}, applet_name={21:0}, argc=1, bb_errno={13:0}, bb_errno_location={13:0}, bb_msg_memory_exhausted={14:0}, charmap={17:0}, die_jmp={15:0}, die_sleep=0, dummy_utmp={19:0}, format_chars={18:0}, local_buf={16:0}, logmode=1, msg_eol={3:0}, optind=1, xfunc_error_retval=1] [L3430] EXPR argc+1 [L3430] char **argv=malloc((argc+1)*sizeof(char*)); [L3431] EXPR argc+1 [L3431] char **mem_track=malloc((argc+1)*sizeof(char*)); [L3432] argv[argc]=0 [L3433] int i=0; VAL [a={21:0}, applet_name={21:0}, argc=1, argv={-13:0}, bb_errno={13:0}, bb_errno_location={13:0}, bb_msg_memory_exhausted={14:0}, charmap={17:0}, die_jmp={15:0}, die_sleep=0, dummy_utmp={19:0}, format_chars={18:0}, i=0, local_buf={16:0}, logmode=1, mem_track={-14:0}, msg_eol={3:0}, optind=1, xfunc_error_retval=1] [L3433] COND TRUE i main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx 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 -> a1277896718e4a2de50a241e859788fd2cca972852ccec2fe2acb0e0515dfcaa [2023-11-21 21:00:35,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 21:00:35,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 21:00:35,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 21:00:35,234 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 21:00:35,234 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 21:00:35,237 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/busybox-1.22.0/printf-2.i [2023-11-21 21:00:38,391 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 21:00:38,993 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 21:00:38,993 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/sv-benchmarks/c/busybox-1.22.0/printf-2.i [2023-11-21 21:00:39,038 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/data/8c81deb29/bea732112e6e48f2b03d436a367cd7d8/FLAG06837d69f [2023-11-21 21:00:39,057 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7978928-48c8-4c3f-b76b-aef357586cf4/bin/uautomizer-verify-bycVGegfSx/data/8c81deb29/bea732112e6e48f2b03d436a367cd7d8 [2023-11-21 21:00:39,063 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 21:00:39,065 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 21:00:39,068 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 21:00:39,068 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 21:00:39,074 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 21:00:39,075 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:00:39" (1/1) ... [2023-11-21 21:00:39,076 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b1b4192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:39, skipping insertion in model container [2023-11-21 21:00:39,077 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:00:39" (1/1) ... [2023-11-21 21:00:39,180 INFO L177 MainTranslator]: Built tables and reachable declarations