./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/uudecode-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/uudecode-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu --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 150ea71e0c96adbe924f08f9358df48371eb6efdbb9a21296b7b08bec4c6d07d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:50:11,512 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:50:11,576 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-19 07:50:11,582 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:50:11,582 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:50:11,607 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:50:11,608 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:50:11,612 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:50:11,613 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:50:11,614 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:50:11,614 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:50:11,615 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:50:11,615 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:50:11,616 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:50:11,616 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:50:11,617 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:50:11,618 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:50:11,618 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:50:11,619 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:50:11,619 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:50:11,620 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:50:11,624 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:50:11,624 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:50:11,625 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:50:11,628 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:50:11,629 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:50:11,629 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:50:11,629 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:50:11,630 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:50:11,630 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:50:11,631 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:50:11,631 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:50:11,631 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:50:11,632 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:50:11,632 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:50:11,632 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:50:11,633 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:50:11,633 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:50:11,633 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_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 150ea71e0c96adbe924f08f9358df48371eb6efdbb9a21296b7b08bec4c6d07d [2023-11-19 07:50:11,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:50:11,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:50:11,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:50:11,919 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:50:11,919 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:50:11,921 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/busybox-1.22.0/uudecode-2.i [2023-11-19 07:50:15,166 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:50:15,631 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:50:15,632 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/sv-benchmarks/c/busybox-1.22.0/uudecode-2.i [2023-11-19 07:50:15,672 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/data/6ca2d912f/96ad472e543647749b5cbc6e11d6fe03/FLAG38d8d8617 [2023-11-19 07:50:15,690 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/data/6ca2d912f/96ad472e543647749b5cbc6e11d6fe03 [2023-11-19 07:50:15,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:50:15,700 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:50:15,704 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:50:15,704 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:50:15,710 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:50:15,713 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:50:15" (1/1) ... [2023-11-19 07:50:15,715 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23f278b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:15, skipping insertion in model container [2023-11-19 07:50:15,715 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:50:15" (1/1) ... [2023-11-19 07:50:15,832 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:50:17,833 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:50:17,887 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:50:18,189 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:50:18,373 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:50:18,374 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:50:18,374 WARN L675 CHandler]: The function strncmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:50:18,374 WARN L675 CHandler]: The function decode_fn_ptr is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:50:18,374 WARN L675 CHandler]: The function fopen is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:50:18,375 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:50:18,375 WARN L675 CHandler]: The function fwrite is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:50:18,375 WARN L675 CHandler]: The function fgetc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:50:18,383 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:50:18,384 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:18 WrapperNode [2023-11-19 07:50:18,384 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:50:18,385 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:50:18,385 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:50:18,386 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:50:18,393 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:18" (1/1) ... [2023-11-19 07:50:18,470 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:18" (1/1) ... [2023-11-19 07:50:18,578 INFO L138 Inliner]: procedures = 620, calls = 857, calls flagged for inlining = 37, calls inlined = 36, statements flattened = 2877 [2023-11-19 07:50:18,584 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:50:18,584 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:50:18,585 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:50:18,585 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:50:18,595 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:18" (1/1) ... [2023-11-19 07:50:18,595 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:18" (1/1) ... [2023-11-19 07:50:18,637 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:18" (1/1) ... [2023-11-19 07:50:18,640 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:18" (1/1) ... [2023-11-19 07:50:18,746 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:18" (1/1) ... [2023-11-19 07:50:18,852 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:18" (1/1) ... [2023-11-19 07:50:18,865 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:18" (1/1) ... [2023-11-19 07:50:18,878 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:18" (1/1) ... [2023-11-19 07:50:18,899 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:50:18,900 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:50:18,901 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:50:18,901 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:50:18,902 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:18" (1/1) ... [2023-11-19 07:50:18,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:50:18,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:18,934 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:50:18,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:50:18,976 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2023-11-19 07:50:18,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2023-11-19 07:50:18,976 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2023-11-19 07:50:18,977 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2023-11-19 07:50:18,977 INFO L138 BoogieDeclarations]: Found implementation of procedure _IO_getc [2023-11-19 07:50:18,977 INFO L130 BoogieDeclarations]: Found specification of procedure xrealloc [2023-11-19 07:50:18,977 INFO L138 BoogieDeclarations]: Found implementation of procedure xrealloc [2023-11-19 07:50:18,977 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-19 07:50:18,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:50:18,979 INFO L130 BoogieDeclarations]: Found specification of procedure ret_ERANGE [2023-11-19 07:50:18,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ret_ERANGE [2023-11-19 07:50:18,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 07:50:18,980 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-19 07:50:18,980 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-19 07:50:18,980 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2023-11-19 07:50:18,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 07:50:18,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:50:18,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:50:18,981 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-19 07:50:18,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:50:18,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:50:18,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:50:18,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:50:18,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-19 07:50:18,983 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-19 07:50:18,984 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-19 07:50:18,984 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-19 07:50:18,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 07:50:18,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 07:50:18,985 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2023-11-19 07:50:18,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 07:50:18,986 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 07:50:18,986 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:50:18,986 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:50:18,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:50:18,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:50:18,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 07:50:18,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2023-11-19 07:50:18,987 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2023-11-19 07:50:18,987 INFO L130 BoogieDeclarations]: Found specification of procedure bb_ascii_isalnum [2023-11-19 07:50:18,988 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_ascii_isalnum [2023-11-19 07:50:18,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:50:18,988 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc_fgetline [2023-11-19 07:50:18,988 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc_fgetline [2023-11-19 07:50:18,988 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-19 07:50:18,988 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-19 07:50:18,989 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-19 07:50:18,989 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2023-11-19 07:50:18,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:50:19,550 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:50:19,553 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:50:21,908 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:50:21,925 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:50:21,925 INFO L302 CfgBuilder]: Removed 43 assume(true) statements. [2023-11-19 07:50:21,937 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:50:21 BoogieIcfgContainer [2023-11-19 07:50:21,937 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:50:21,939 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:50:21,939 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:50:21,943 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:50:21,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:50:15" (1/3) ... [2023-11-19 07:50:21,944 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a884831 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:50:21, skipping insertion in model container [2023-11-19 07:50:21,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:18" (2/3) ... [2023-11-19 07:50:21,945 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a884831 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:50:21, skipping insertion in model container [2023-11-19 07:50:21,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:50:21" (3/3) ... [2023-11-19 07:50:21,947 INFO L112 eAbstractionObserver]: Analyzing ICFG uudecode-2.i [2023-11-19 07:50:21,967 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:50:21,968 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 148 error locations. [2023-11-19 07:50:22,039 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:50:22,046 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;@6e32cd4a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:50:22,047 INFO L358 AbstractCegarLoop]: Starting to check reachability of 148 error locations. [2023-11-19 07:50:22,055 INFO L276 IsEmpty]: Start isEmpty. Operand has 878 states, 677 states have (on average 1.707533234859675) internal successors, (1156), 822 states have internal predecessors, (1156), 42 states have call successors, (42), 13 states have call predecessors, (42), 13 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-11-19 07:50:22,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 07:50:22,062 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:22,063 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 07:50:22,063 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 145 more)] === [2023-11-19 07:50:22,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:22,069 INFO L85 PathProgramCache]: Analyzing trace with hash 14409157, now seen corresponding path program 1 times [2023-11-19 07:50:22,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:22,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135696095] [2023-11-19 07:50:22,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:22,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:22,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:22,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:22,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:22,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135696095] [2023-11-19 07:50:22,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135696095] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:22,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:22,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:50:22,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747377962] [2023-11-19 07:50:22,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:22,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:50:22,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:22,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:50:22,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:50:22,855 INFO L87 Difference]: Start difference. First operand has 878 states, 677 states have (on average 1.707533234859675) internal successors, (1156), 822 states have internal predecessors, (1156), 42 states have call successors, (42), 13 states have call predecessors, (42), 13 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:23,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:23,093 INFO L93 Difference]: Finished difference Result 1730 states and 2487 transitions. [2023-11-19 07:50:23,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:50:23,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-19 07:50:23,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:23,117 INFO L225 Difference]: With dead ends: 1730 [2023-11-19 07:50:23,118 INFO L226 Difference]: Without dead ends: 851 [2023-11-19 07:50:23,128 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 [2023-11-19 07:50:23,133 INFO L413 NwaCegarLoop]: 1143 mSDtfsCounter, 1 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2280 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:23,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2280 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:23,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2023-11-19 07:50:23,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 851. [2023-11-19 07:50:23,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 660 states have (on average 1.621212121212121) internal successors, (1070), 806 states have internal predecessors, (1070), 42 states have call successors, (42), 13 states have call predecessors, (42), 12 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-19 07:50:23,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1143 transitions. [2023-11-19 07:50:23,258 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1143 transitions. Word has length 4 [2023-11-19 07:50:23,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:23,259 INFO L495 AbstractCegarLoop]: Abstraction has 851 states and 1143 transitions. [2023-11-19 07:50:23,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:23,259 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1143 transitions. [2023-11-19 07:50:23,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 07:50:23,260 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:23,260 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-19 07:50:23,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:50:23,261 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 145 more)] === [2023-11-19 07:50:23,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:23,262 INFO L85 PathProgramCache]: Analyzing trace with hash -233053951, now seen corresponding path program 1 times [2023-11-19 07:50:23,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:23,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653765376] [2023-11-19 07:50:23,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:23,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:23,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:23,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:23,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653765376] [2023-11-19 07:50:23,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653765376] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:23,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289332554] [2023-11-19 07:50:23,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:23,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:23,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:23,588 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:23,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:50:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:24,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 907 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:50:24,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:24,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:24,121 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:24,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289332554] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:24,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:50:24,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-19 07:50:24,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135988910] [2023-11-19 07:50:24,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:24,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:50:24,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:24,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:50:24,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:50:24,131 INFO L87 Difference]: Start difference. First operand 851 states and 1143 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:24,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:24,205 INFO L93 Difference]: Finished difference Result 851 states and 1143 transitions. [2023-11-19 07:50:24,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:50:24,206 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-19 07:50:24,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:24,213 INFO L225 Difference]: With dead ends: 851 [2023-11-19 07:50:24,220 INFO L226 Difference]: Without dead ends: 850 [2023-11-19 07:50:24,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:50:24,222 INFO L413 NwaCegarLoop]: 1134 mSDtfsCounter, 3 mSDsluCounter, 2264 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3398 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:24,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3398 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:24,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2023-11-19 07:50:24,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 850. [2023-11-19 07:50:24,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 660 states have (on average 1.6196969696969696) internal successors, (1069), 805 states have internal predecessors, (1069), 42 states have call successors, (42), 13 states have call predecessors, (42), 12 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-19 07:50:24,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1142 transitions. [2023-11-19 07:50:24,267 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1142 transitions. Word has length 7 [2023-11-19 07:50:24,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:24,267 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1142 transitions. [2023-11-19 07:50:24,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:24,268 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1142 transitions. [2023-11-19 07:50:24,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 07:50:24,268 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:24,269 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2023-11-19 07:50:24,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:24,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:24,491 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 145 more)] === [2023-11-19 07:50:24,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:24,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1365262594, now seen corresponding path program 1 times [2023-11-19 07:50:24,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:24,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512462958] [2023-11-19 07:50:24,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:24,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:24,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:24,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:50:24,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:24,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512462958] [2023-11-19 07:50:24,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512462958] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:24,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:24,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:50:24,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067217583] [2023-11-19 07:50:24,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:24,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:50:24,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:24,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:50:24,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:50:24,733 INFO L87 Difference]: Start difference. First operand 850 states and 1142 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-11-19 07:50:24,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:24,781 INFO L93 Difference]: Finished difference Result 850 states and 1142 transitions. [2023-11-19 07:50:24,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:50:24,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2023-11-19 07:50:24,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:24,788 INFO L225 Difference]: With dead ends: 850 [2023-11-19 07:50:24,789 INFO L226 Difference]: Without dead ends: 849 [2023-11-19 07:50:24,789 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 [2023-11-19 07:50:24,795 INFO L413 NwaCegarLoop]: 1135 mSDtfsCounter, 0 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2267 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:24,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2267 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:24,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2023-11-19 07:50:24,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 847. [2023-11-19 07:50:24,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 658 states have (on average 1.6200607902735562) internal successors, (1066), 802 states have internal predecessors, (1066), 42 states have call successors, (42), 13 states have call predecessors, (42), 12 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-19 07:50:24,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1139 transitions. [2023-11-19 07:50:24,832 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1139 transitions. Word has length 8 [2023-11-19 07:50:24,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:24,832 INFO L495 AbstractCegarLoop]: Abstraction has 847 states and 1139 transitions. [2023-11-19 07:50:24,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-11-19 07:50:24,833 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1139 transitions. [2023-11-19 07:50:24,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 07:50:24,833 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:24,833 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:24,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:50:24,834 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 145 more)] === [2023-11-19 07:50:24,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:24,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1016991870, now seen corresponding path program 1 times [2023-11-19 07:50:24,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:24,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980512361] [2023-11-19 07:50:24,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:24,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:25,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:50:25,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:25,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:25,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:25,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980512361] [2023-11-19 07:50:25,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980512361] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:25,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948591115] [2023-11-19 07:50:25,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:25,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:25,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:25,136 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:25,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:50:25,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:25,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:50:25,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:25,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:50:25,622 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:25,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948591115] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:25,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:50:25,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 07:50:25,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123910304] [2023-11-19 07:50:25,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:25,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:50:25,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:25,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:50:25,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:50:25,626 INFO L87 Difference]: Start difference. First operand 847 states and 1139 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:50:25,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:25,689 INFO L93 Difference]: Finished difference Result 847 states and 1139 transitions. [2023-11-19 07:50:25,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:50:25,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-11-19 07:50:25,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:25,696 INFO L225 Difference]: With dead ends: 847 [2023-11-19 07:50:25,696 INFO L226 Difference]: Without dead ends: 845 [2023-11-19 07:50:25,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:50:25,698 INFO L413 NwaCegarLoop]: 1126 mSDtfsCounter, 843 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:25,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 1398 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:25,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2023-11-19 07:50:25,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2023-11-19 07:50:25,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 658 states have (on average 1.6170212765957446) internal successors, (1064), 800 states have internal predecessors, (1064), 42 states have call successors, (42), 13 states have call predecessors, (42), 12 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-19 07:50:25,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1137 transitions. [2023-11-19 07:50:25,741 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1137 transitions. Word has length 13 [2023-11-19 07:50:25,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:25,743 INFO L495 AbstractCegarLoop]: Abstraction has 845 states and 1137 transitions. [2023-11-19 07:50:25,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:50:25,743 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1137 transitions. [2023-11-19 07:50:25,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 07:50:25,744 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:25,744 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:25,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:25,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:25,968 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 145 more)] === [2023-11-19 07:50:25,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:25,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1461976406, now seen corresponding path program 1 times [2023-11-19 07:50:25,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:25,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452886301] [2023-11-19 07:50:25,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:25,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:26,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:50:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:26,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:26,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:26,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452886301] [2023-11-19 07:50:26,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452886301] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:26,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963243896] [2023-11-19 07:50:26,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:26,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:26,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:26,198 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:26,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:50:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:26,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 925 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:50:26,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:26,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:26,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:26,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:26,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963243896] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:50:26,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:50:26,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-19 07:50:26,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779006252] [2023-11-19 07:50:26,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:50:26,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:50:26,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:26,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:50:26,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:50:26,708 INFO L87 Difference]: Start difference. First operand 845 states and 1137 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 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) [2023-11-19 07:50:26,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:26,818 INFO L93 Difference]: Finished difference Result 1693 states and 2279 transitions. [2023-11-19 07:50:26,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:50:26,819 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 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 14 [2023-11-19 07:50:26,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:26,825 INFO L225 Difference]: With dead ends: 1693 [2023-11-19 07:50:26,825 INFO L226 Difference]: Without dead ends: 854 [2023-11-19 07:50:26,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:50:26,828 INFO L413 NwaCegarLoop]: 1133 mSDtfsCounter, 4 mSDsluCounter, 2260 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3393 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:26,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 3393 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:26,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2023-11-19 07:50:26,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 854. [2023-11-19 07:50:26,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 667 states have (on average 1.608695652173913) internal successors, (1073), 809 states have internal predecessors, (1073), 42 states have call successors, (42), 13 states have call predecessors, (42), 12 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-19 07:50:26,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1146 transitions. [2023-11-19 07:50:26,874 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1146 transitions. Word has length 14 [2023-11-19 07:50:26,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:26,875 INFO L495 AbstractCegarLoop]: Abstraction has 854 states and 1146 transitions. [2023-11-19 07:50:26,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 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) [2023-11-19 07:50:26,875 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1146 transitions. [2023-11-19 07:50:26,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 07:50:26,876 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:26,877 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:26,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-19 07:50:27,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:27,097 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 145 more)] === [2023-11-19 07:50:27,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:27,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1802480538, now seen corresponding path program 2 times [2023-11-19 07:50:27,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:27,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872272800] [2023-11-19 07:50:27,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:27,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:27,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 07:50:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:27,500 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:27,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:27,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872272800] [2023-11-19 07:50:27,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872272800] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:27,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205280205] [2023-11-19 07:50:27,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:50:27,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:27,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:27,503 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:27,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:50:27,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:50:27,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:50:27,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 906 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:50:27,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:28,001 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-19 07:50:28,002 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:28,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205280205] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:28,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:50:28,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-11-19 07:50:28,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165159303] [2023-11-19 07:50:28,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:28,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:50:28,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:28,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:50:28,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:50:28,004 INFO L87 Difference]: Start difference. First operand 854 states and 1146 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2023-11-19 07:50:28,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:28,136 INFO L93 Difference]: Finished difference Result 854 states and 1146 transitions. [2023-11-19 07:50:28,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:50:28,137 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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 23 [2023-11-19 07:50:28,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:28,142 INFO L225 Difference]: With dead ends: 854 [2023-11-19 07:50:28,142 INFO L226 Difference]: Without dead ends: 852 [2023-11-19 07:50:28,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:50:28,144 INFO L413 NwaCegarLoop]: 1120 mSDtfsCounter, 842 mSDsluCounter, 2495 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 3615 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:28,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 3615 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:50:28,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2023-11-19 07:50:28,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 852. [2023-11-19 07:50:28,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 667 states have (on average 1.605697151424288) internal successors, (1071), 807 states have internal predecessors, (1071), 42 states have call successors, (42), 13 states have call predecessors, (42), 12 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-19 07:50:28,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1144 transitions. [2023-11-19 07:50:28,179 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1144 transitions. Word has length 23 [2023-11-19 07:50:28,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:28,179 INFO L495 AbstractCegarLoop]: Abstraction has 852 states and 1144 transitions. [2023-11-19 07:50:28,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2023-11-19 07:50:28,179 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1144 transitions. [2023-11-19 07:50:28,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 07:50:28,180 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:28,181 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:28,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:28,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:28,397 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 145 more)] === [2023-11-19 07:50:28,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:28,397 INFO L85 PathProgramCache]: Analyzing trace with hash -424873389, now seen corresponding path program 1 times [2023-11-19 07:50:28,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:28,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911406469] [2023-11-19 07:50:28,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:28,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:28,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 07:50:28,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:28,657 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-19 07:50:28,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:28,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911406469] [2023-11-19 07:50:28,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911406469] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:28,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:28,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:50:28,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772292851] [2023-11-19 07:50:28,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:28,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:50:28,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:28,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:50:28,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:50:28,661 INFO L87 Difference]: Start difference. First operand 852 states and 1144 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) [2023-11-19 07:50:28,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:28,726 INFO L93 Difference]: Finished difference Result 1686 states and 2271 transitions. [2023-11-19 07:50:28,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:50:28,726 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 28 [2023-11-19 07:50:28,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:28,732 INFO L225 Difference]: With dead ends: 1686 [2023-11-19 07:50:28,732 INFO L226 Difference]: Without dead ends: 855 [2023-11-19 07:50:28,734 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 [2023-11-19 07:50:28,736 INFO L413 NwaCegarLoop]: 1131 mSDtfsCounter, 1 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2256 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:28,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2256 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:28,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2023-11-19 07:50:28,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 855. [2023-11-19 07:50:28,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 670 states have (on average 1.6029850746268657) internal successors, (1074), 810 states have internal predecessors, (1074), 42 states have call successors, (42), 13 states have call predecessors, (42), 12 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-19 07:50:28,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1147 transitions. [2023-11-19 07:50:28,777 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1147 transitions. Word has length 28 [2023-11-19 07:50:28,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:28,778 INFO L495 AbstractCegarLoop]: Abstraction has 855 states and 1147 transitions. [2023-11-19 07:50:28,778 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) [2023-11-19 07:50:28,778 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1147 transitions. [2023-11-19 07:50:28,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 07:50:28,780 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:28,780 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:28,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:50:28,781 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 145 more)] === [2023-11-19 07:50:28,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:28,784 INFO L85 PathProgramCache]: Analyzing trace with hash -282709003, now seen corresponding path program 1 times [2023-11-19 07:50:28,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:28,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922974499] [2023-11-19 07:50:28,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:28,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:29,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 07:50:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:29,035 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-19 07:50:29,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:29,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922974499] [2023-11-19 07:50:29,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922974499] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:29,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:29,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:50:29,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283100707] [2023-11-19 07:50:29,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:29,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:50:29,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:29,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:50:29,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:50:29,038 INFO L87 Difference]: Start difference. First operand 855 states and 1147 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 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) [2023-11-19 07:50:29,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:29,124 INFO L93 Difference]: Finished difference Result 1141 states and 1571 transitions. [2023-11-19 07:50:29,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:50:29,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 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 30 [2023-11-19 07:50:29,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:29,132 INFO L225 Difference]: With dead ends: 1141 [2023-11-19 07:50:29,132 INFO L226 Difference]: Without dead ends: 1139 [2023-11-19 07:50:29,133 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 [2023-11-19 07:50:29,134 INFO L413 NwaCegarLoop]: 1126 mSDtfsCounter, 400 mSDsluCounter, 1118 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 2244 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:29,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 2244 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:29,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2023-11-19 07:50:29,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 859. [2023-11-19 07:50:29,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 674 states have (on average 1.6008902077151335) internal successors, (1079), 814 states have internal predecessors, (1079), 42 states have call successors, (42), 13 states have call predecessors, (42), 12 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-19 07:50:29,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1152 transitions. [2023-11-19 07:50:29,181 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1152 transitions. Word has length 30 [2023-11-19 07:50:29,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:29,181 INFO L495 AbstractCegarLoop]: Abstraction has 859 states and 1152 transitions. [2023-11-19 07:50:29,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 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) [2023-11-19 07:50:29,182 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1152 transitions. [2023-11-19 07:50:29,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 07:50:29,183 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:29,183 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:29,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:50:29,184 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 145 more)] === [2023-11-19 07:50:29,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:29,184 INFO L85 PathProgramCache]: Analyzing trace with hash -133997163, now seen corresponding path program 1 times [2023-11-19 07:50:29,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:29,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118157222] [2023-11-19 07:50:29,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:29,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:29,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:29,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 07:50:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:29,455 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-19 07:50:29,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:29,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118157222] [2023-11-19 07:50:29,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118157222] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:29,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162071889] [2023-11-19 07:50:29,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:29,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:29,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:29,457 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:29,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:50:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:30,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 1102 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:50:30,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:30,095 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:50:30,095 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:30,224 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:50:30,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162071889] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:50:30,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:50:30,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 14 [2023-11-19 07:50:30,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980791304] [2023-11-19 07:50:30,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:50:30,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:50:30,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:30,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:50:30,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:50:30,228 INFO L87 Difference]: Start difference. First operand 859 states and 1152 transitions. Second operand has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 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) [2023-11-19 07:50:30,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:30,469 INFO L93 Difference]: Finished difference Result 1720 states and 2312 transitions. [2023-11-19 07:50:30,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:50:30,470 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 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 31 [2023-11-19 07:50:30,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:30,479 INFO L225 Difference]: With dead ends: 1720 [2023-11-19 07:50:30,479 INFO L226 Difference]: Without dead ends: 876 [2023-11-19 07:50:30,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:50:30,486 INFO L413 NwaCegarLoop]: 1125 mSDtfsCounter, 7 mSDsluCounter, 5610 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 6735 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:30,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 6735 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:50:30,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2023-11-19 07:50:30,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 876. [2023-11-19 07:50:30,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 692 states have (on average 1.583815028901734) internal successors, (1096), 831 states have internal predecessors, (1096), 42 states have call successors, (42), 13 states have call predecessors, (42), 12 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-19 07:50:30,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1169 transitions. [2023-11-19 07:50:30,532 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1169 transitions. Word has length 31 [2023-11-19 07:50:30,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:30,533 INFO L495 AbstractCegarLoop]: Abstraction has 876 states and 1169 transitions. [2023-11-19 07:50:30,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 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) [2023-11-19 07:50:30,534 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1169 transitions. [2023-11-19 07:50:30,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-19 07:50:30,540 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:30,541 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] [2023-11-19 07:50:30,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:30,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:30,763 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 145 more)] === [2023-11-19 07:50:30,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:30,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1103930319, now seen corresponding path program 1 times [2023-11-19 07:50:30,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:30,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021333803] [2023-11-19 07:50:30,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:30,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:30,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:31,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:50:31,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:31,030 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-19 07:50:31,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:31,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021333803] [2023-11-19 07:50:31,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021333803] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:31,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:31,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:50:31,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043868810] [2023-11-19 07:50:31,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:31,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:50:31,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:31,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:50:31,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:50:31,033 INFO L87 Difference]: Start difference. First operand 876 states and 1169 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 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) [2023-11-19 07:50:31,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:31,104 INFO L93 Difference]: Finished difference Result 890 states and 1185 transitions. [2023-11-19 07:50:31,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:50:31,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 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 50 [2023-11-19 07:50:31,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:31,110 INFO L225 Difference]: With dead ends: 890 [2023-11-19 07:50:31,111 INFO L226 Difference]: Without dead ends: 888 [2023-11-19 07:50:31,111 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 [2023-11-19 07:50:31,112 INFO L413 NwaCegarLoop]: 1128 mSDtfsCounter, 3 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2251 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:31,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2251 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:31,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2023-11-19 07:50:31,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 886. [2023-11-19 07:50:31,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 702 states have (on average 1.5797720797720798) internal successors, (1109), 841 states have internal predecessors, (1109), 42 states have call successors, (42), 13 states have call predecessors, (42), 12 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-19 07:50:31,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1182 transitions. [2023-11-19 07:50:31,151 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1182 transitions. Word has length 50 [2023-11-19 07:50:31,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:31,151 INFO L495 AbstractCegarLoop]: Abstraction has 886 states and 1182 transitions. [2023-11-19 07:50:31,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 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) [2023-11-19 07:50:31,152 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1182 transitions. [2023-11-19 07:50:31,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-19 07:50:31,152 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:31,153 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] [2023-11-19 07:50:31,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:50:31,153 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 145 more)] === [2023-11-19 07:50:31,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:31,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1103932048, now seen corresponding path program 1 times [2023-11-19 07:50:31,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:31,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556061167] [2023-11-19 07:50:31,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:31,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:31,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:31,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:50:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:31,413 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-19 07:50:31,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:31,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556061167] [2023-11-19 07:50:31,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556061167] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:31,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:31,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:50:31,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842365255] [2023-11-19 07:50:31,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:31,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:50:31,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:31,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:50:31,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:50:31,418 INFO L87 Difference]: Start difference. First operand 886 states and 1182 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 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) [2023-11-19 07:50:31,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:31,467 INFO L93 Difference]: Finished difference Result 886 states and 1182 transitions. [2023-11-19 07:50:31,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:50:31,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 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 50 [2023-11-19 07:50:31,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:31,475 INFO L225 Difference]: With dead ends: 886 [2023-11-19 07:50:31,475 INFO L226 Difference]: Without dead ends: 885 [2023-11-19 07:50:31,476 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 [2023-11-19 07:50:31,477 INFO L413 NwaCegarLoop]: 1129 mSDtfsCounter, 0 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2254 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:31,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2254 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:31,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2023-11-19 07:50:31,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 881. [2023-11-19 07:50:31,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 698 states have (on average 1.5802292263610316) internal successors, (1103), 836 states have internal predecessors, (1103), 42 states have call successors, (42), 13 states have call predecessors, (42), 12 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-19 07:50:31,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1176 transitions. [2023-11-19 07:50:31,514 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1176 transitions. Word has length 50 [2023-11-19 07:50:31,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:31,515 INFO L495 AbstractCegarLoop]: Abstraction has 881 states and 1176 transitions. [2023-11-19 07:50:31,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 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) [2023-11-19 07:50:31,515 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1176 transitions. [2023-11-19 07:50:31,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-19 07:50:31,518 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:31,518 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] [2023-11-19 07:50:31,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:50:31,518 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 145 more)] === [2023-11-19 07:50:31,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:31,519 INFO L85 PathProgramCache]: Analyzing trace with hash 988677838, now seen corresponding path program 1 times [2023-11-19 07:50:31,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:31,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149795713] [2023-11-19 07:50:31,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:31,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:31,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:31,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:50:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:31,852 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-19 07:50:31,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:31,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149795713] [2023-11-19 07:50:31,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149795713] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:31,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469523860] [2023-11-19 07:50:31,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:31,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:31,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:31,854 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:31,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:50:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:32,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 1252 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:50:32,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:32,451 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-19 07:50:32,451 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:32,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469523860] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:32,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:50:32,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-19 07:50:32,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136642703] [2023-11-19 07:50:32,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:32,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:50:32,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:32,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:50:32,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:50:32,455 INFO L87 Difference]: Start difference. First operand 881 states and 1176 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 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) [2023-11-19 07:50:32,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:32,591 INFO L93 Difference]: Finished difference Result 1165 states and 1598 transitions. [2023-11-19 07:50:32,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:50:32,592 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 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 [2023-11-19 07:50:32,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:32,600 INFO L225 Difference]: With dead ends: 1165 [2023-11-19 07:50:32,600 INFO L226 Difference]: Without dead ends: 1164 [2023-11-19 07:50:32,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:50:32,602 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 800 mSDsluCounter, 1846 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 3382 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:32,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 3382 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:50:32,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2023-11-19 07:50:32,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 880. [2023-11-19 07:50:32,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 698 states have (on average 1.5787965616045845) internal successors, (1102), 835 states have internal predecessors, (1102), 42 states have call successors, (42), 13 states have call predecessors, (42), 12 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-19 07:50:32,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1175 transitions. [2023-11-19 07:50:32,645 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1175 transitions. Word has length 52 [2023-11-19 07:50:32,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:32,647 INFO L495 AbstractCegarLoop]: Abstraction has 880 states and 1175 transitions. [2023-11-19 07:50:32,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 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) [2023-11-19 07:50:32,647 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1175 transitions. [2023-11-19 07:50:32,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-19 07:50:32,648 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:32,648 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:32,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:32,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:32,864 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 145 more)] === [2023-11-19 07:50:32,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:32,865 INFO L85 PathProgramCache]: Analyzing trace with hash 584242450, now seen corresponding path program 1 times [2023-11-19 07:50:32,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:32,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024507881] [2023-11-19 07:50:32,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:32,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:33,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:50:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:33,177 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-19 07:50:33,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:33,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024507881] [2023-11-19 07:50:33,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024507881] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:33,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38652651] [2023-11-19 07:50:33,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:33,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:33,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:33,180 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:33,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:50:33,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:33,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:50:33,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:33,746 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-19 07:50:33,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:33,782 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-19 07:50:33,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38652651] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:50:33,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:50:33,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-19 07:50:33,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337080639] [2023-11-19 07:50:33,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:50:33,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:50:33,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:33,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:50:33,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:50:33,786 INFO L87 Difference]: Start difference. First operand 880 states and 1175 transitions. Second operand has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 7 states have internal predecessors, (38), 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) [2023-11-19 07:50:34,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:34,100 INFO L93 Difference]: Finished difference Result 2013 states and 2861 transitions. [2023-11-19 07:50:34,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:50:34,101 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 7 states have internal predecessors, (38), 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 53 [2023-11-19 07:50:34,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:34,112 INFO L225 Difference]: With dead ends: 2013 [2023-11-19 07:50:34,112 INFO L226 Difference]: Without dead ends: 2012 [2023-11-19 07:50:34,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:50:34,114 INFO L413 NwaCegarLoop]: 1123 mSDtfsCounter, 2396 mSDsluCounter, 3450 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2424 SdHoareTripleChecker+Valid, 4573 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:34,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2424 Valid, 4573 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:50:34,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2012 states. [2023-11-19 07:50:34,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2012 to 892. [2023-11-19 07:50:34,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 710 states have (on average 1.5732394366197182) internal successors, (1117), 847 states have internal predecessors, (1117), 42 states have call successors, (42), 13 states have call predecessors, (42), 12 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-19 07:50:34,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1190 transitions. [2023-11-19 07:50:34,173 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1190 transitions. Word has length 53 [2023-11-19 07:50:34,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:34,173 INFO L495 AbstractCegarLoop]: Abstraction has 892 states and 1190 transitions. [2023-11-19 07:50:34,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 7 states have internal predecessors, (38), 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) [2023-11-19 07:50:34,174 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1190 transitions. [2023-11-19 07:50:34,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-19 07:50:34,175 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:34,175 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:34,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:34,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:34,389 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 145 more)] === [2023-11-19 07:50:34,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:34,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1220248824, now seen corresponding path program 1 times [2023-11-19 07:50:34,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:34,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637407813] [2023-11-19 07:50:34,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:34,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:34,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:34,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:50:34,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:34,666 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-19 07:50:34,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:34,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637407813] [2023-11-19 07:50:34,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637407813] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:34,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550149962] [2023-11-19 07:50:34,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:34,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:34,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:34,668 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:34,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:50:35,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:35,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 1273 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:50:35,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:35,269 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-19 07:50:35,269 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:35,292 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-19 07:50:35,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550149962] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:50:35,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:50:35,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-19 07:50:35,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285514772] [2023-11-19 07:50:35,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:50:35,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:50:35,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:35,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:50:35,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:50:35,295 INFO L87 Difference]: Start difference. First operand 892 states and 1190 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 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) [2023-11-19 07:50:35,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:35,388 INFO L93 Difference]: Finished difference Result 1758 states and 2356 transitions. [2023-11-19 07:50:35,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:50:35,389 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 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 58 [2023-11-19 07:50:35,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:35,394 INFO L225 Difference]: With dead ends: 1758 [2023-11-19 07:50:35,395 INFO L226 Difference]: Without dead ends: 910 [2023-11-19 07:50:35,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:50:35,397 INFO L413 NwaCegarLoop]: 1128 mSDtfsCounter, 4 mSDsluCounter, 3372 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4500 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:35,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 4500 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:35,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2023-11-19 07:50:35,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 910. [2023-11-19 07:50:35,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 728 states have (on average 1.559065934065934) internal successors, (1135), 865 states have internal predecessors, (1135), 42 states have call successors, (42), 13 states have call predecessors, (42), 12 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-19 07:50:35,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1208 transitions. [2023-11-19 07:50:35,439 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1208 transitions. Word has length 58 [2023-11-19 07:50:35,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:35,440 INFO L495 AbstractCegarLoop]: Abstraction has 910 states and 1208 transitions. [2023-11-19 07:50:35,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 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) [2023-11-19 07:50:35,440 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1208 transitions. [2023-11-19 07:50:35,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-19 07:50:35,441 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:35,441 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] [2023-11-19 07:50:35,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:35,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:35,665 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 145 more)] === [2023-11-19 07:50:35,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:35,665 INFO L85 PathProgramCache]: Analyzing trace with hash -958328010, now seen corresponding path program 1 times [2023-11-19 07:50:35,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:35,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976784706] [2023-11-19 07:50:35,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:35,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:36,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:50:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:36,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-19 07:50:36,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:36,092 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-19 07:50:36,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:36,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976784706] [2023-11-19 07:50:36,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976784706] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:36,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:36,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:50:36,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346003580] [2023-11-19 07:50:36,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:36,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:50:36,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:36,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:50:36,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:50:36,095 INFO L87 Difference]: Start difference. First operand 910 states and 1208 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:50:37,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:37,178 INFO L93 Difference]: Finished difference Result 1881 states and 2537 transitions. [2023-11-19 07:50:37,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:50:37,178 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 62 [2023-11-19 07:50:37,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:37,187 INFO L225 Difference]: With dead ends: 1881 [2023-11-19 07:50:37,187 INFO L226 Difference]: Without dead ends: 1075 [2023-11-19 07:50:37,189 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 [2023-11-19 07:50:37,190 INFO L413 NwaCegarLoop]: 1125 mSDtfsCounter, 229 mSDsluCounter, 1866 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 2991 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:37,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 2991 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 07:50:37,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2023-11-19 07:50:37,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 951. [2023-11-19 07:50:37,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 951 states, 768 states have (on average 1.5494791666666667) internal successors, (1190), 905 states have internal predecessors, (1190), 43 states have call successors, (43), 13 states have call predecessors, (43), 12 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-19 07:50:37,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1265 transitions. [2023-11-19 07:50:37,245 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1265 transitions. Word has length 62 [2023-11-19 07:50:37,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:37,245 INFO L495 AbstractCegarLoop]: Abstraction has 951 states and 1265 transitions. [2023-11-19 07:50:37,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:50:37,245 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1265 transitions. [2023-11-19 07:50:37,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-19 07:50:37,246 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:37,246 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] [2023-11-19 07:50:37,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:50:37,247 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 145 more)] === [2023-11-19 07:50:37,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:37,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1830197477, now seen corresponding path program 1 times [2023-11-19 07:50:37,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:37,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190382782] [2023-11-19 07:50:37,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:37,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:37,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:50:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:37,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-19 07:50:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:37,498 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-19 07:50:37,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:37,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190382782] [2023-11-19 07:50:37,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190382782] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:37,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:37,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:50:37,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832053960] [2023-11-19 07:50:37,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:37,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:50:37,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:37,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:50:37,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:50:37,502 INFO L87 Difference]: Start difference. First operand 951 states and 1265 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:50:38,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:38,421 INFO L93 Difference]: Finished difference Result 1020 states and 1359 transitions. [2023-11-19 07:50:38,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:50:38,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 64 [2023-11-19 07:50:38,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:38,430 INFO L225 Difference]: With dead ends: 1020 [2023-11-19 07:50:38,430 INFO L226 Difference]: Without dead ends: 1018 [2023-11-19 07:50:38,431 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 [2023-11-19 07:50:38,431 INFO L413 NwaCegarLoop]: 1103 mSDtfsCounter, 106 mSDsluCounter, 1912 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 3015 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:38,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 3015 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 07:50:38,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2023-11-19 07:50:38,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 951. [2023-11-19 07:50:38,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 951 states, 768 states have (on average 1.546875) internal successors, (1188), 905 states have internal predecessors, (1188), 43 states have call successors, (43), 13 states have call predecessors, (43), 12 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-19 07:50:38,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1263 transitions. [2023-11-19 07:50:38,489 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1263 transitions. Word has length 64 [2023-11-19 07:50:38,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:38,489 INFO L495 AbstractCegarLoop]: Abstraction has 951 states and 1263 transitions. [2023-11-19 07:50:38,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:50:38,490 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1263 transitions. [2023-11-19 07:50:38,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-19 07:50:38,491 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:38,491 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:38,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 07:50:38,491 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 145 more)] === [2023-11-19 07:50:38,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:38,492 INFO L85 PathProgramCache]: Analyzing trace with hash -592424089, now seen corresponding path program 2 times [2023-11-19 07:50:38,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:38,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393241637] [2023-11-19 07:50:38,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:38,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:38,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:38,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:50:38,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:38,948 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-19 07:50:38,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:38,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393241637] [2023-11-19 07:50:38,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393241637] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:38,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406245473] [2023-11-19 07:50:38,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:50:38,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:38,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:38,963 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:38,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:50:39,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:50:39,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:50:39,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:50:39,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:39,615 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2023-11-19 07:50:39,615 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:39,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406245473] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:39,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:50:39,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2023-11-19 07:50:39,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064409972] [2023-11-19 07:50:39,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:39,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:50:39,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:39,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:50:39,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:50:39,618 INFO L87 Difference]: Start difference. First operand 951 states and 1263 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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) [2023-11-19 07:50:39,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:39,850 INFO L93 Difference]: Finished difference Result 1827 states and 2445 transitions. [2023-11-19 07:50:39,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:50:39,851 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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 65 [2023-11-19 07:50:39,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:39,856 INFO L225 Difference]: With dead ends: 1827 [2023-11-19 07:50:39,857 INFO L226 Difference]: Without dead ends: 951 [2023-11-19 07:50:39,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:50:39,860 INFO L413 NwaCegarLoop]: 1114 mSDtfsCounter, 851 mSDsluCounter, 3308 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 4422 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:39,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 4422 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:50:39,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2023-11-19 07:50:39,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 951. [2023-11-19 07:50:39,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 951 states, 768 states have (on average 1.5455729166666667) internal successors, (1187), 905 states have internal predecessors, (1187), 43 states have call successors, (43), 13 states have call predecessors, (43), 12 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-19 07:50:39,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1262 transitions. [2023-11-19 07:50:39,947 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1262 transitions. Word has length 65 [2023-11-19 07:50:39,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:39,947 INFO L495 AbstractCegarLoop]: Abstraction has 951 states and 1262 transitions. [2023-11-19 07:50:39,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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) [2023-11-19 07:50:39,947 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1262 transitions. [2023-11-19 07:50:39,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-19 07:50:39,953 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:39,954 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:39,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:40,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-19 07:50:40,168 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 145 more)] === [2023-11-19 07:50:40,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:40,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1951394554, now seen corresponding path program 2 times [2023-11-19 07:50:40,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:40,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522637277] [2023-11-19 07:50:40,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:40,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:40,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:40,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:50:40,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:40,601 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2023-11-19 07:50:40,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:40,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522637277] [2023-11-19 07:50:40,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522637277] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:40,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281605029] [2023-11-19 07:50:40,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:50:40,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:40,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:40,605 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:40,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 07:50:41,417 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:50:41,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:50:41,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:50:41,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:41,491 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 58 proven. 22 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-11-19 07:50:41,491 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:41,594 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 58 proven. 22 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-11-19 07:50:41,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281605029] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:50:41,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:50:41,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 14 [2023-11-19 07:50:41,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909500672] [2023-11-19 07:50:41,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:50:41,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:50:41,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:41,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:50:41,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:50:41,597 INFO L87 Difference]: Start difference. First operand 951 states and 1262 transitions. Second operand has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 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) [2023-11-19 07:50:42,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:42,099 INFO L93 Difference]: Finished difference Result 1884 states and 2516 transitions. [2023-11-19 07:50:42,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-19 07:50:42,100 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 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 76 [2023-11-19 07:50:42,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:42,133 INFO L225 Difference]: With dead ends: 1884 [2023-11-19 07:50:42,133 INFO L226 Difference]: Without dead ends: 986 [2023-11-19 07:50:42,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=330, Invalid=792, Unknown=0, NotChecked=0, Total=1122 [2023-11-19 07:50:42,138 INFO L413 NwaCegarLoop]: 1124 mSDtfsCounter, 11 mSDsluCounter, 6714 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 7838 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:42,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 7838 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:50:42,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2023-11-19 07:50:42,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 986. [2023-11-19 07:50:42,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 986 states, 804 states have (on average 1.5199004975124377) internal successors, (1222), 940 states have internal predecessors, (1222), 43 states have call successors, (43), 13 states have call predecessors, (43), 12 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-19 07:50:42,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1297 transitions. [2023-11-19 07:50:42,191 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1297 transitions. Word has length 76 [2023-11-19 07:50:42,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:42,191 INFO L495 AbstractCegarLoop]: Abstraction has 986 states and 1297 transitions. [2023-11-19 07:50:42,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 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) [2023-11-19 07:50:42,192 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1297 transitions. [2023-11-19 07:50:42,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-19 07:50:42,193 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:42,193 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:42,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:42,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-19 07:50:42,412 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 145 more)] === [2023-11-19 07:50:42,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:42,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1408831644, now seen corresponding path program 1 times [2023-11-19 07:50:42,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:42,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908402887] [2023-11-19 07:50:42,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:42,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:42,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:42,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:50:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:42,921 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-19 07:50:42,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:42,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908402887] [2023-11-19 07:50:42,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908402887] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:42,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729551612] [2023-11-19 07:50:42,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:42,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:42,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:42,924 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:42,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 07:50:43,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:43,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 1521 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:50:43,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:43,703 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-19 07:50:43,703 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:43,819 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-19 07:50:43,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729551612] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:50:43,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:50:43,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-19 07:50:43,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750812192] [2023-11-19 07:50:43,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:50:43,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:50:43,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:43,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:50:43,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:50:43,825 INFO L87 Difference]: Start difference. First operand 986 states and 1297 transitions. Second operand has 13 states, 12 states have (on average 5.833333333333333) internal successors, (70), 13 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) [2023-11-19 07:50:44,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:44,593 INFO L93 Difference]: Finished difference Result 4221 states and 6053 transitions. [2023-11-19 07:50:44,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:50:44,594 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.833333333333333) internal successors, (70), 13 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 100 [2023-11-19 07:50:44,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:44,622 INFO L225 Difference]: With dead ends: 4221 [2023-11-19 07:50:44,622 INFO L226 Difference]: Without dead ends: 4220 [2023-11-19 07:50:44,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:50:44,626 INFO L413 NwaCegarLoop]: 1122 mSDtfsCounter, 5889 mSDsluCounter, 7829 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5959 SdHoareTripleChecker+Valid, 8951 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:44,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5959 Valid, 8951 Invalid, 241 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [26 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:50:44,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4220 states. [2023-11-19 07:50:44,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4220 to 1010. [2023-11-19 07:50:44,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1010 states, 828 states have (on average 1.5120772946859904) internal successors, (1252), 964 states have internal predecessors, (1252), 43 states have call successors, (43), 13 states have call predecessors, (43), 12 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-19 07:50:44,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1327 transitions. [2023-11-19 07:50:44,710 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1327 transitions. Word has length 100 [2023-11-19 07:50:44,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:44,711 INFO L495 AbstractCegarLoop]: Abstraction has 1010 states and 1327 transitions. [2023-11-19 07:50:44,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.833333333333333) internal successors, (70), 13 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) [2023-11-19 07:50:44,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1327 transitions. [2023-11-19 07:50:44,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-19 07:50:44,713 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:44,713 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:44,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:44,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:44,936 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 145 more)] === [2023-11-19 07:50:44,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:44,937 INFO L85 PathProgramCache]: Analyzing trace with hash -950388949, now seen corresponding path program 1 times [2023-11-19 07:50:44,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:44,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122924828] [2023-11-19 07:50:44,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:44,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:45,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:45,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:50:45,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:45,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-19 07:50:45,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:45,399 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-19 07:50:45,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:45,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122924828] [2023-11-19 07:50:45,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122924828] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:45,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:45,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:50:45,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222401715] [2023-11-19 07:50:45,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:45,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:50:45,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:45,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:50:45,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:50:45,403 INFO L87 Difference]: Start difference. First operand 1010 states and 1327 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:50:46,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:46,630 INFO L93 Difference]: Finished difference Result 2006 states and 2652 transitions. [2023-11-19 07:50:46,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:50:46,631 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 106 [2023-11-19 07:50:46,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:46,640 INFO L225 Difference]: With dead ends: 2006 [2023-11-19 07:50:46,640 INFO L226 Difference]: Without dead ends: 1241 [2023-11-19 07:50:46,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:50:46,644 INFO L413 NwaCegarLoop]: 1135 mSDtfsCounter, 865 mSDsluCounter, 2566 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 3701 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:46,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 3701 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-19 07:50:46,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2023-11-19 07:50:46,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1109. [2023-11-19 07:50:46,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1109 states, 913 states have (on average 1.5136911281489596) internal successors, (1382), 1048 states have internal predecessors, (1382), 52 states have call successors, (52), 20 states have call predecessors, (52), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-19 07:50:46,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1474 transitions. [2023-11-19 07:50:46,713 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1474 transitions. Word has length 106 [2023-11-19 07:50:46,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:46,713 INFO L495 AbstractCegarLoop]: Abstraction has 1109 states and 1474 transitions. [2023-11-19 07:50:46,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:50:46,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1474 transitions. [2023-11-19 07:50:46,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-19 07:50:46,715 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:46,715 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:46,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-19 07:50:46,716 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 145 more)] === [2023-11-19 07:50:46,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:46,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1569570985, now seen corresponding path program 1 times [2023-11-19 07:50:46,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:46,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974980009] [2023-11-19 07:50:46,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:46,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:46,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:46,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:50:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:46,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-19 07:50:46,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:47,011 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-19 07:50:47,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:47,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974980009] [2023-11-19 07:50:47,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974980009] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:47,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:47,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:50:47,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143536175] [2023-11-19 07:50:47,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:47,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:50:47,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:47,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:50:47,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:50:47,015 INFO L87 Difference]: Start difference. First operand 1109 states and 1474 transitions. Second operand has 4 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:50:48,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:48,288 INFO L93 Difference]: Finished difference Result 2127 states and 2893 transitions. [2023-11-19 07:50:48,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:50:48,290 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 106 [2023-11-19 07:50:48,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:48,303 INFO L225 Difference]: With dead ends: 2127 [2023-11-19 07:50:48,303 INFO L226 Difference]: Without dead ends: 1279 [2023-11-19 07:50:48,306 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 [2023-11-19 07:50:48,306 INFO L413 NwaCegarLoop]: 1172 mSDtfsCounter, 222 mSDsluCounter, 1901 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 3073 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:48,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 3073 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-19 07:50:48,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2023-11-19 07:50:48,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1112. [2023-11-19 07:50:48,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 918 states have (on average 1.5098039215686274) internal successors, (1386), 1051 states have internal predecessors, (1386), 52 states have call successors, (52), 20 states have call predecessors, (52), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-19 07:50:48,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1478 transitions. [2023-11-19 07:50:48,384 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1478 transitions. Word has length 106 [2023-11-19 07:50:48,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:48,384 INFO L495 AbstractCegarLoop]: Abstraction has 1112 states and 1478 transitions. [2023-11-19 07:50:48,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:50:48,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1478 transitions. [2023-11-19 07:50:48,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-19 07:50:48,386 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:48,386 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:48,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-19 07:50:48,387 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 145 more)] === [2023-11-19 07:50:48,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:48,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1570203476, now seen corresponding path program 1 times [2023-11-19 07:50:48,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:48,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520127192] [2023-11-19 07:50:48,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:48,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:48,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:48,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:50:48,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:48,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-19 07:50:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:48,806 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-19 07:50:48,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:48,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520127192] [2023-11-19 07:50:48,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520127192] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:48,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:48,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:50:48,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549447875] [2023-11-19 07:50:48,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:48,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:50:48,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:48,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:50:48,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:50:48,809 INFO L87 Difference]: Start difference. First operand 1112 states and 1478 transitions. Second operand has 4 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:50:49,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:49,787 INFO L93 Difference]: Finished difference Result 1210 states and 1620 transitions. [2023-11-19 07:50:49,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:50:49,788 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 106 [2023-11-19 07:50:49,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:49,794 INFO L225 Difference]: With dead ends: 1210 [2023-11-19 07:50:49,794 INFO L226 Difference]: Without dead ends: 1207 [2023-11-19 07:50:49,795 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 [2023-11-19 07:50:49,796 INFO L413 NwaCegarLoop]: 1049 mSDtfsCounter, 457 mSDsluCounter, 1499 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 2548 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:49,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 2548 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 07:50:49,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2023-11-19 07:50:49,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1109. [2023-11-19 07:50:49,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1109 states, 918 states have (on average 1.5065359477124183) internal successors, (1383), 1048 states have internal predecessors, (1383), 52 states have call successors, (52), 20 states have call predecessors, (52), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-19 07:50:49,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1475 transitions. [2023-11-19 07:50:49,853 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1475 transitions. Word has length 106 [2023-11-19 07:50:49,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:49,854 INFO L495 AbstractCegarLoop]: Abstraction has 1109 states and 1475 transitions. [2023-11-19 07:50:49,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:50:49,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1475 transitions. [2023-11-19 07:50:49,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-19 07:50:49,856 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:49,856 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:49,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-19 07:50:49,857 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 145 more)] === [2023-11-19 07:50:49,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:49,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1412061058, now seen corresponding path program 1 times [2023-11-19 07:50:49,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:49,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597432997] [2023-11-19 07:50:49,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:49,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:50,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:50:50,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:50,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-19 07:50:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:50,163 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-19 07:50:50,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:50,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597432997] [2023-11-19 07:50:50,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597432997] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:50,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:50,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:50:50,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761383811] [2023-11-19 07:50:50,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:50,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:50:50,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:50,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:50:50,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:50:50,167 INFO L87 Difference]: Start difference. First operand 1109 states and 1475 transitions. Second operand has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:50:51,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:51,239 INFO L93 Difference]: Finished difference Result 2133 states and 2900 transitions. [2023-11-19 07:50:51,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:50:51,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 107 [2023-11-19 07:50:51,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:51,246 INFO L225 Difference]: With dead ends: 2133 [2023-11-19 07:50:51,246 INFO L226 Difference]: Without dead ends: 1281 [2023-11-19 07:50:51,253 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 [2023-11-19 07:50:51,254 INFO L413 NwaCegarLoop]: 1134 mSDtfsCounter, 343 mSDsluCounter, 1784 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 2918 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:51,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 2918 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 07:50:51,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2023-11-19 07:50:51,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1094. [2023-11-19 07:50:51,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 907 states have (on average 1.5027563395810364) internal successors, (1363), 1033 states have internal predecessors, (1363), 52 states have call successors, (52), 20 states have call predecessors, (52), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-19 07:50:51,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1455 transitions. [2023-11-19 07:50:51,312 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1455 transitions. Word has length 107 [2023-11-19 07:50:51,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:51,313 INFO L495 AbstractCegarLoop]: Abstraction has 1094 states and 1455 transitions. [2023-11-19 07:50:51,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:50:51,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1455 transitions. [2023-11-19 07:50:51,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-19 07:50:51,315 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:51,315 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:51,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-19 07:50:51,315 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 145 more)] === [2023-11-19 07:50:51,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:51,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1431668339, now seen corresponding path program 1 times [2023-11-19 07:50:51,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:51,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582655479] [2023-11-19 07:50:51,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:51,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:51,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:50:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:51,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-19 07:50:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:51,665 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-19 07:50:51,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:51,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582655479] [2023-11-19 07:50:51,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582655479] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:51,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:51,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:50:51,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18661208] [2023-11-19 07:50:51,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:51,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:50:51,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:51,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:50:51,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:50:51,670 INFO L87 Difference]: Start difference. First operand 1094 states and 1455 transitions. Second operand has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:50:52,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:52,906 INFO L93 Difference]: Finished difference Result 1237 states and 1664 transitions. [2023-11-19 07:50:52,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:50:52,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 107 [2023-11-19 07:50:52,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:52,911 INFO L225 Difference]: With dead ends: 1237 [2023-11-19 07:50:52,911 INFO L226 Difference]: Without dead ends: 1236 [2023-11-19 07:50:52,912 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 [2023-11-19 07:50:52,913 INFO L413 NwaCegarLoop]: 1073 mSDtfsCounter, 486 mSDsluCounter, 1573 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 2646 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:52,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 2646 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-19 07:50:52,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2023-11-19 07:50:52,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 1093. [2023-11-19 07:50:52,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 907 states have (on average 1.5016538037486218) internal successors, (1362), 1032 states have internal predecessors, (1362), 52 states have call successors, (52), 20 states have call predecessors, (52), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-19 07:50:52,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1454 transitions. [2023-11-19 07:50:52,970 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1454 transitions. Word has length 107 [2023-11-19 07:50:52,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:52,971 INFO L495 AbstractCegarLoop]: Abstraction has 1093 states and 1454 transitions. [2023-11-19 07:50:52,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:50:52,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1454 transitions. [2023-11-19 07:50:52,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-19 07:50:52,973 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:52,973 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:52,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-19 07:50:52,973 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 145 more)] === [2023-11-19 07:50:52,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:52,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1893497655, now seen corresponding path program 1 times [2023-11-19 07:50:52,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:52,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649421603] [2023-11-19 07:50:52,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:52,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:53,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:53,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:50:53,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:53,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-19 07:50:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:53,542 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-19 07:50:53,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:53,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649421603] [2023-11-19 07:50:53,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649421603] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:53,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481464161] [2023-11-19 07:50:53,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:53,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:53,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:53,547 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:53,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 07:50:54,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:54,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 1612 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:50:54,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:54,470 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-19 07:50:54,471 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:54,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481464161] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:54,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:50:54,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-11-19 07:50:54,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129001964] [2023-11-19 07:50:54,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:54,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:50:54,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:54,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:50:54,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:50:54,473 INFO L87 Difference]: Start difference. First operand 1093 states and 1454 transitions. Second operand has 5 states, 4 states have (on average 12.5) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:50:54,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:54,703 INFO L93 Difference]: Finished difference Result 2070 states and 2796 transitions. [2023-11-19 07:50:54,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:50:54,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.5) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 108 [2023-11-19 07:50:54,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:54,709 INFO L225 Difference]: With dead ends: 2070 [2023-11-19 07:50:54,709 INFO L226 Difference]: Without dead ends: 1167 [2023-11-19 07:50:54,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:50:54,713 INFO L413 NwaCegarLoop]: 1173 mSDtfsCounter, 473 mSDsluCounter, 1925 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 3098 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:54,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 3098 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:50:54,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2023-11-19 07:50:54,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1092. [2023-11-19 07:50:54,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1092 states, 908 states have (on average 1.4966960352422907) internal successors, (1359), 1031 states have internal predecessors, (1359), 52 states have call successors, (52), 20 states have call predecessors, (52), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-19 07:50:54,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 1451 transitions. [2023-11-19 07:50:54,773 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 1451 transitions. Word has length 108 [2023-11-19 07:50:54,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:54,773 INFO L495 AbstractCegarLoop]: Abstraction has 1092 states and 1451 transitions. [2023-11-19 07:50:54,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.5) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:50:54,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 1451 transitions. [2023-11-19 07:50:54,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-19 07:50:54,775 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:54,776 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:54,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:54,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8ed11a-5bfb-4c88-a973-c4ac8d656590/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-19 07:50:54,990 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 145 more)] === [2023-11-19 07:50:54,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:54,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1414868198, now seen corresponding path program 1 times [2023-11-19 07:50:54,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:54,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344076873] [2023-11-19 07:50:54,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:54,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:55,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:55,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:50:55,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:55,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-19 07:50:55,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:55,370 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2023-11-19 07:50:55,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:55,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344076873] [2023-11-19 07:50:55,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344076873] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:55,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:55,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:50:55,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718624233] [2023-11-19 07:50:55,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:55,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:50:55,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:55,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:50:55,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:50:55,375 INFO L87 Difference]: Start difference. First operand 1092 states and 1451 transitions. Second operand has 4 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:50:56,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:56,571 INFO L93 Difference]: Finished difference Result 1186 states and 1588 transitions. [2023-11-19 07:50:56,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:50:56,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 110 [2023-11-19 07:50:56,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:56,577 INFO L225 Difference]: With dead ends: 1186 [2023-11-19 07:50:56,577 INFO L226 Difference]: Without dead ends: 1185 [2023-11-19 07:50:56,578 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 [2023-11-19 07:50:56,579 INFO L413 NwaCegarLoop]: 1091 mSDtfsCounter, 107 mSDsluCounter, 1885 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 2976 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:56,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 2976 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-19 07:50:56,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2023-11-19 07:50:56,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 1091. [2023-11-19 07:50:56,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 908 states have (on average 1.4955947136563876) internal successors, (1358), 1030 states have internal predecessors, (1358), 52 states have call successors, (52), 20 states have call predecessors, (52), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-19 07:50:56,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1450 transitions. [2023-11-19 07:50:56,701 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1450 transitions. Word has length 110 [2023-11-19 07:50:56,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:56,701 INFO L495 AbstractCegarLoop]: Abstraction has 1091 states and 1450 transitions. [2023-11-19 07:50:56,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:50:56,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1450 transitions. [2023-11-19 07:50:56,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-19 07:50:56,705 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:56,705 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:56,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-19 07:50:56,707 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 145 more)] === [2023-11-19 07:50:56,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:56,708 INFO L85 PathProgramCache]: Analyzing trace with hash -911240584, now seen corresponding path program 1 times [2023-11-19 07:50:56,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:56,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044824659] [2023-11-19 07:50:56,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:56,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:57,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat