./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/touch-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/touch-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 32e9263d26246e579275874a2829421d6525f922e0954d42023b75b7698643d2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:43:56,826 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:43:56,910 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-06 22:43:56,916 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:43:56,917 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:43:56,945 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:43:56,946 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:43:56,947 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:43:56,948 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:43:56,949 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:43:56,950 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:43:56,950 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:43:56,951 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:43:56,952 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:43:56,952 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:43:56,953 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:43:56,953 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:43:56,954 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:43:56,954 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:43:56,955 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:43:56,955 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:43:56,956 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:43:56,957 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:43:56,957 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:43:56,957 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:43:56,958 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:43:56,958 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:43:56,959 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:43:56,959 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:43:56,960 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:43:56,960 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:43:56,961 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:43:56,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:43:56,961 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:43:56,962 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:43:56,962 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:43:56,962 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:43:56,963 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:43:56,963 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_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32e9263d26246e579275874a2829421d6525f922e0954d42023b75b7698643d2 [2023-11-06 22:43:57,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:43:57,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:43:57,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:43:57,371 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:43:57,373 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:43:57,376 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/busybox-1.22.0/touch-1.i [2023-11-06 22:44:00,574 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:44:01,095 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:44:01,096 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/sv-benchmarks/c/busybox-1.22.0/touch-1.i [2023-11-06 22:44:01,137 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/data/c5792615e/79677521f4ba48e8a5c87bb516c6a04a/FLAGe71f9f2ce [2023-11-06 22:44:01,160 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/data/c5792615e/79677521f4ba48e8a5c87bb516c6a04a [2023-11-06 22:44:01,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:44:01,172 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:44:01,174 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:44:01,175 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:44:01,180 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:44:01,181 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:01" (1/1) ... [2023-11-06 22:44:01,182 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69ae72d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:01, skipping insertion in model container [2023-11-06 22:44:01,183 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:01" (1/1) ... [2023-11-06 22:44:01,289 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:44:03,170 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:44:03,205 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:44:03,458 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:44:03,653 WARN L672 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:44:03,654 WARN L672 CHandler]: The function localtime is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:44:03,654 WARN L672 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:44:03,654 WARN L672 CHandler]: The function mktime is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:44:03,654 WARN L672 CHandler]: The function strrchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:44:03,655 WARN L672 CHandler]: The function strtoll is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:44:03,655 WARN L672 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:44:03,655 WARN L672 CHandler]: The function longjmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:44:03,655 WARN L672 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:44:03,656 WARN L672 CHandler]: The function close is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:44:03,664 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:44:03,665 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:03 WrapperNode [2023-11-06 22:44:03,665 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:44:03,666 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:44:03,666 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:44:03,667 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:44:03,675 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:03" (1/1) ... [2023-11-06 22:44:03,754 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:03" (1/1) ... [2023-11-06 22:44:03,914 INFO L138 Inliner]: procedures = 669, calls = 743, calls flagged for inlining = 38, calls inlined = 37, statements flattened = 2714 [2023-11-06 22:44:03,915 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:44:03,916 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:44:03,916 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:44:03,916 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:44:03,926 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:03" (1/1) ... [2023-11-06 22:44:03,926 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:03" (1/1) ... [2023-11-06 22:44:03,982 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:03" (1/1) ... [2023-11-06 22:44:03,982 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:03" (1/1) ... [2023-11-06 22:44:04,084 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:03" (1/1) ... [2023-11-06 22:44:04,102 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:03" (1/1) ... [2023-11-06 22:44:04,117 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:03" (1/1) ... [2023-11-06 22:44:04,132 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:03" (1/1) ... [2023-11-06 22:44:04,159 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:44:04,160 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:44:04,160 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:44:04,161 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:44:04,162 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:03" (1/1) ... [2023-11-06 22:44:04,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:44:04,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:04,266 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:44:04,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:44:04,404 INFO L130 BoogieDeclarations]: Found specification of procedure close [2023-11-06 22:44:04,404 INFO L130 BoogieDeclarations]: Found specification of procedure localtime [2023-11-06 22:44:04,405 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-06 22:44:04,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:44:04,405 INFO L130 BoogieDeclarations]: Found specification of procedure ret_ERANGE [2023-11-06 22:44:04,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ret_ERANGE [2023-11-06 22:44:04,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-06 22:44:04,407 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-06 22:44:04,408 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-06 22:44:04,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-06 22:44:04,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:44:04,409 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-11-06 22:44:04,409 INFO L130 BoogieDeclarations]: Found specification of procedure mktime [2023-11-06 22:44:04,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:44:04,410 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-06 22:44:04,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:44:04,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:44:04,411 INFO L130 BoogieDeclarations]: Found specification of procedure utimes [2023-11-06 22:44:04,411 INFO L138 BoogieDeclarations]: Found implementation of procedure utimes [2023-11-06 22:44:04,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:44:04,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:44:04,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-06 22:44:04,413 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-06 22:44:04,413 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-06 22:44:04,416 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-06 22:44:04,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-06 22:44:04,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-06 22:44:04,418 INFO L130 BoogieDeclarations]: Found specification of procedure bb_perror_msg_and_die [2023-11-06 22:44:04,419 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_perror_msg_and_die [2023-11-06 22:44:04,419 INFO L130 BoogieDeclarations]: Found specification of procedure stat [2023-11-06 22:44:04,419 INFO L138 BoogieDeclarations]: Found implementation of procedure stat [2023-11-06 22:44:04,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-06 22:44:04,420 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-06 22:44:04,421 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:44:04,421 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:44:04,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:44:04,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:44:04,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-06 22:44:04,422 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-06 22:44:04,422 INFO L130 BoogieDeclarations]: Found specification of procedure bb_show_usage [2023-11-06 22:44:04,423 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_show_usage [2023-11-06 22:44:04,423 INFO L130 BoogieDeclarations]: Found specification of procedure bb_ascii_isalnum [2023-11-06 22:44:04,423 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_ascii_isalnum [2023-11-06 22:44:04,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:44:04,423 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2023-11-06 22:44:04,424 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-06 22:44:04,424 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-06 22:44:04,424 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-06 22:44:04,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:44:05,068 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:44:05,071 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:44:08,846 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:44:08,869 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:44:08,870 INFO L302 CfgBuilder]: Removed 26 assume(true) statements. [2023-11-06 22:44:08,874 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:08 BoogieIcfgContainer [2023-11-06 22:44:08,874 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:44:08,879 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:44:08,879 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:44:08,884 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:44:08,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:44:01" (1/3) ... [2023-11-06 22:44:08,886 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c348a97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:08, skipping insertion in model container [2023-11-06 22:44:08,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:03" (2/3) ... [2023-11-06 22:44:08,888 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c348a97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:08, skipping insertion in model container [2023-11-06 22:44:08,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:08" (3/3) ... [2023-11-06 22:44:08,890 INFO L112 eAbstractionObserver]: Analyzing ICFG touch-1.i [2023-11-06 22:44:08,920 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:44:08,920 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 96 error locations. [2023-11-06 22:44:09,015 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:44:09,024 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=LoopsAndPotentialCycles, 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;@1ac251, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:44:09,025 INFO L358 AbstractCegarLoop]: Starting to check reachability of 96 error locations. [2023-11-06 22:44:09,035 INFO L276 IsEmpty]: Start isEmpty. Operand has 743 states, 578 states have (on average 1.657439446366782) internal successors, (958), 676 states have internal predecessors, (958), 56 states have call successors, (56), 12 states have call predecessors, (56), 12 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2023-11-06 22:44:09,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-06 22:44:09,050 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:09,051 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-06 22:44:09,054 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 93 more)] === [2023-11-06 22:44:09,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:09,061 INFO L85 PathProgramCache]: Analyzing trace with hash 11392325, now seen corresponding path program 1 times [2023-11-06 22:44:09,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:09,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370191408] [2023-11-06 22:44:09,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:09,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:09,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:09,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:09,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370191408] [2023-11-06 22:44:09,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370191408] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:09,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:09,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:44:09,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066654822] [2023-11-06 22:44:09,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:09,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:44:09,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:09,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:44:09,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:44:09,808 INFO L87 Difference]: Start difference. First operand has 743 states, 578 states have (on average 1.657439446366782) internal successors, (958), 676 states have internal predecessors, (958), 56 states have call successors, (56), 12 states have call predecessors, (56), 12 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) 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) [2023-11-06 22:44:09,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:09,991 INFO L93 Difference]: Finished difference Result 1466 states and 2162 transitions. [2023-11-06 22:44:09,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:44:09,994 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 [2023-11-06 22:44:09,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:10,016 INFO L225 Difference]: With dead ends: 1466 [2023-11-06 22:44:10,022 INFO L226 Difference]: Without dead ends: 722 [2023-11-06 22:44:10,033 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 [2023-11-06 22:44:10,040 INFO L413 NwaCegarLoop]: 1002 mSDtfsCounter, 1 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1998 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 [2023-11-06 22:44:10,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1998 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:10,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2023-11-06 22:44:10,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 722. [2023-11-06 22:44:10,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 562 states have (on average 1.604982206405694) internal successors, (902), 667 states have internal predecessors, (902), 56 states have call successors, (56), 12 states have call predecessors, (56), 10 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-06 22:44:10,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 1002 transitions. [2023-11-06 22:44:10,164 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 1002 transitions. Word has length 4 [2023-11-06 22:44:10,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:10,164 INFO L495 AbstractCegarLoop]: Abstraction has 722 states and 1002 transitions. [2023-11-06 22:44:10,165 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) [2023-11-06 22:44:10,165 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 1002 transitions. [2023-11-06 22:44:10,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-06 22:44:10,165 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:10,165 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-06 22:44:10,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:44:10,166 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 93 more)] === [2023-11-06 22:44:10,167 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:10,167 INFO L85 PathProgramCache]: Analyzing trace with hash 86719839, now seen corresponding path program 1 times [2023-11-06 22:44:10,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:10,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64777783] [2023-11-06 22:44:10,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:10,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:10,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:10,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:10,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:10,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64777783] [2023-11-06 22:44:10,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64777783] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:10,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151964419] [2023-11-06 22:44:10,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:10,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:10,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:10,396 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:10,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:44:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:10,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:44:10,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:10,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:10,897 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:44:10,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151964419] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:10,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:44:10,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-06 22:44:10,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382878648] [2023-11-06 22:44:10,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:10,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:44:10,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:10,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:44:10,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:10,908 INFO L87 Difference]: Start difference. First operand 722 states and 1002 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) [2023-11-06 22:44:10,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:10,977 INFO L93 Difference]: Finished difference Result 722 states and 1002 transitions. [2023-11-06 22:44:10,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:44:10,978 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 [2023-11-06 22:44:10,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:10,992 INFO L225 Difference]: With dead ends: 722 [2023-11-06 22:44:10,992 INFO L226 Difference]: Without dead ends: 721 [2023-11-06 22:44:10,993 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 [2023-11-06 22:44:10,994 INFO L413 NwaCegarLoop]: 993 mSDtfsCounter, 5 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1984 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:10,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1984 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:10,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2023-11-06 22:44:11,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 721. [2023-11-06 22:44:11,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 562 states have (on average 1.603202846975089) internal successors, (901), 666 states have internal predecessors, (901), 56 states have call successors, (56), 12 states have call predecessors, (56), 10 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-06 22:44:11,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1001 transitions. [2023-11-06 22:44:11,036 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1001 transitions. Word has length 7 [2023-11-06 22:44:11,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:11,036 INFO L495 AbstractCegarLoop]: Abstraction has 721 states and 1001 transitions. [2023-11-06 22:44:11,036 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) [2023-11-06 22:44:11,037 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1001 transitions. [2023-11-06 22:44:11,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 22:44:11,037 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:11,037 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2023-11-06 22:44:11,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:11,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:11,246 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 93 more)] === [2023-11-06 22:44:11,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:11,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1606651902, now seen corresponding path program 1 times [2023-11-06 22:44:11,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:11,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397484985] [2023-11-06 22:44:11,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:11,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:11,387 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:44:11,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:11,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397484985] [2023-11-06 22:44:11,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397484985] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:11,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:11,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:44:11,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400432999] [2023-11-06 22:44:11,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:11,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:44:11,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:11,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:44:11,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:44:11,389 INFO L87 Difference]: Start difference. First operand 721 states and 1001 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) [2023-11-06 22:44:11,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:11,429 INFO L93 Difference]: Finished difference Result 721 states and 1001 transitions. [2023-11-06 22:44:11,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:44:11,430 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 [2023-11-06 22:44:11,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:11,435 INFO L225 Difference]: With dead ends: 721 [2023-11-06 22:44:11,435 INFO L226 Difference]: Without dead ends: 720 [2023-11-06 22:44:11,436 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 [2023-11-06 22:44:11,437 INFO L413 NwaCegarLoop]: 994 mSDtfsCounter, 0 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1985 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 [2023-11-06 22:44:11,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1985 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:11,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2023-11-06 22:44:11,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 718. [2023-11-06 22:44:11,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 560 states have (on average 1.6035714285714286) internal successors, (898), 663 states have internal predecessors, (898), 56 states have call successors, (56), 12 states have call predecessors, (56), 10 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-06 22:44:11,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 998 transitions. [2023-11-06 22:44:11,472 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 998 transitions. Word has length 8 [2023-11-06 22:44:11,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:11,472 INFO L495 AbstractCegarLoop]: Abstraction has 718 states and 998 transitions. [2023-11-06 22:44:11,472 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) [2023-11-06 22:44:11,473 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 998 transitions. [2023-11-06 22:44:11,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 22:44:11,473 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:11,473 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:11,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:44:11,474 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 93 more)] === [2023-11-06 22:44:11,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:11,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1397349262, now seen corresponding path program 1 times [2023-11-06 22:44:11,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:11,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491577950] [2023-11-06 22:44:11,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:11,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:11,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:44:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:11,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:11,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:11,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491577950] [2023-11-06 22:44:11,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491577950] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:11,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908372984] [2023-11-06 22:44:11,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:11,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:11,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:11,682 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:11,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:44:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:12,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:44:12,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:12,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:44:12,142 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:44:12,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908372984] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:12,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:44:12,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-06 22:44:12,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705639288] [2023-11-06 22:44:12,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:12,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:44:12,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:12,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:44:12,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:12,145 INFO L87 Difference]: Start difference. First operand 718 states and 998 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) [2023-11-06 22:44:12,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:12,229 INFO L93 Difference]: Finished difference Result 718 states and 998 transitions. [2023-11-06 22:44:12,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:44:12,230 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 [2023-11-06 22:44:12,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:12,236 INFO L225 Difference]: With dead ends: 718 [2023-11-06 22:44:12,236 INFO L226 Difference]: Without dead ends: 716 [2023-11-06 22:44:12,237 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 [2023-11-06 22:44:12,239 INFO L413 NwaCegarLoop]: 985 mSDtfsCounter, 714 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 1227 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 [2023-11-06 22:44:12,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 1227 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:12,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2023-11-06 22:44:12,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 716. [2023-11-06 22:44:12,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 560 states have (on average 1.6) internal successors, (896), 661 states have internal predecessors, (896), 56 states have call successors, (56), 12 states have call predecessors, (56), 10 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-06 22:44:12,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 996 transitions. [2023-11-06 22:44:12,277 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 996 transitions. Word has length 13 [2023-11-06 22:44:12,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:12,278 INFO L495 AbstractCegarLoop]: Abstraction has 716 states and 996 transitions. [2023-11-06 22:44:12,278 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) [2023-11-06 22:44:12,279 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 996 transitions. [2023-11-06 22:44:12,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-06 22:44:12,284 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:12,284 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:12,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:12,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:12,497 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 93 more)] === [2023-11-06 22:44:12,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:12,498 INFO L85 PathProgramCache]: Analyzing trace with hash -368153768, now seen corresponding path program 1 times [2023-11-06 22:44:12,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:12,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784425296] [2023-11-06 22:44:12,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:12,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:12,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:12,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:44:12,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:12,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:12,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:12,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784425296] [2023-11-06 22:44:12,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784425296] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:12,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226382245] [2023-11-06 22:44:12,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:12,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:12,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:12,705 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:12,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:44:13,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:13,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:44:13,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:13,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:13,113 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:44:13,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:13,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226382245] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:44:13,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:44:13,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-06 22:44:13,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528165583] [2023-11-06 22:44:13,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:44:13,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:44:13,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:13,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:44:13,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:44:13,147 INFO L87 Difference]: Start difference. First operand 716 states and 996 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) [2023-11-06 22:44:13,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:13,227 INFO L93 Difference]: Finished difference Result 1435 states and 1997 transitions. [2023-11-06 22:44:13,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:44:13,228 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 [2023-11-06 22:44:13,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:13,233 INFO L225 Difference]: With dead ends: 1435 [2023-11-06 22:44:13,233 INFO L226 Difference]: Without dead ends: 725 [2023-11-06 22:44:13,235 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 [2023-11-06 22:44:13,236 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 4 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1981 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:13,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1981 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:13,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2023-11-06 22:44:13,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 725. [2023-11-06 22:44:13,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 569 states have (on average 1.5905096660808435) internal successors, (905), 670 states have internal predecessors, (905), 56 states have call successors, (56), 12 states have call predecessors, (56), 10 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-06 22:44:13,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 1005 transitions. [2023-11-06 22:44:13,269 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 1005 transitions. Word has length 14 [2023-11-06 22:44:13,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:13,269 INFO L495 AbstractCegarLoop]: Abstraction has 725 states and 1005 transitions. [2023-11-06 22:44:13,269 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) [2023-11-06 22:44:13,270 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 1005 transitions. [2023-11-06 22:44:13,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-06 22:44:13,270 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:13,271 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:13,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:13,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:13,479 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 93 more)] === [2023-11-06 22:44:13,479 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:13,479 INFO L85 PathProgramCache]: Analyzing trace with hash -719060686, now seen corresponding path program 2 times [2023-11-06 22:44:13,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:13,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469965268] [2023-11-06 22:44:13,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:13,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:13,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:44:13,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:13,794 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:13,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:13,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469965268] [2023-11-06 22:44:13,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469965268] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:13,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302053234] [2023-11-06 22:44:13,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:44:13,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:13,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:13,800 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:13,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:44:14,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:44:14,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:44:14,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:44:14,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:14,244 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-06 22:44:14,245 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:44:14,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302053234] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:14,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:44:14,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-11-06 22:44:14,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742127782] [2023-11-06 22:44:14,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:14,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:44:14,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:14,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:44:14,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:44:14,248 INFO L87 Difference]: Start difference. First operand 725 states and 1005 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) [2023-11-06 22:44:14,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:14,524 INFO L93 Difference]: Finished difference Result 725 states and 1005 transitions. [2023-11-06 22:44:14,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:44:14,525 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 [2023-11-06 22:44:14,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:14,530 INFO L225 Difference]: With dead ends: 725 [2023-11-06 22:44:14,530 INFO L226 Difference]: Without dead ends: 723 [2023-11-06 22:44:14,531 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 [2023-11-06 22:44:14,532 INFO L413 NwaCegarLoop]: 960 mSDtfsCounter, 713 mSDsluCounter, 2105 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 3065 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:14,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [749 Valid, 3065 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:44:14,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2023-11-06 22:44:14,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2023-11-06 22:44:14,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 569 states have (on average 1.5869947275922671) internal successors, (903), 668 states have internal predecessors, (903), 56 states have call successors, (56), 12 states have call predecessors, (56), 10 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-06 22:44:14,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1003 transitions. [2023-11-06 22:44:14,572 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1003 transitions. Word has length 23 [2023-11-06 22:44:14,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:14,572 INFO L495 AbstractCegarLoop]: Abstraction has 723 states and 1003 transitions. [2023-11-06 22:44:14,573 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) [2023-11-06 22:44:14,573 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1003 transitions. [2023-11-06 22:44:14,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-06 22:44:14,574 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:14,574 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:14,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:14,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:14,784 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 93 more)] === [2023-11-06 22:44:14,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:14,785 INFO L85 PathProgramCache]: Analyzing trace with hash -502375131, now seen corresponding path program 1 times [2023-11-06 22:44:14,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:14,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269306724] [2023-11-06 22:44:14,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:14,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:14,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:14,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:44:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:14,989 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-06 22:44:14,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:14,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269306724] [2023-11-06 22:44:14,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269306724] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:14,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:14,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:44:14,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759337124] [2023-11-06 22:44:14,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:14,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:44:14,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:14,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:44:14,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:44:14,992 INFO L87 Difference]: Start difference. First operand 723 states and 1003 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) [2023-11-06 22:44:15,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:15,092 INFO L93 Difference]: Finished difference Result 1428 states and 1989 transitions. [2023-11-06 22:44:15,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:44:15,093 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 [2023-11-06 22:44:15,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:15,099 INFO L225 Difference]: With dead ends: 1428 [2023-11-06 22:44:15,099 INFO L226 Difference]: Without dead ends: 726 [2023-11-06 22:44:15,101 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 [2023-11-06 22:44:15,102 INFO L413 NwaCegarLoop]: 990 mSDtfsCounter, 1 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1974 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 [2023-11-06 22:44:15,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1974 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:15,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2023-11-06 22:44:15,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 726. [2023-11-06 22:44:15,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 572 states have (on average 1.583916083916084) internal successors, (906), 671 states have internal predecessors, (906), 56 states have call successors, (56), 12 states have call predecessors, (56), 10 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-06 22:44:15,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 1006 transitions. [2023-11-06 22:44:15,162 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 1006 transitions. Word has length 28 [2023-11-06 22:44:15,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:15,163 INFO L495 AbstractCegarLoop]: Abstraction has 726 states and 1006 transitions. [2023-11-06 22:44:15,163 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) [2023-11-06 22:44:15,163 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 1006 transitions. [2023-11-06 22:44:15,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-06 22:44:15,164 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:15,165 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] [2023-11-06 22:44:15,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:44:15,165 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 93 more)] === [2023-11-06 22:44:15,166 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:15,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1747442169, now seen corresponding path program 1 times [2023-11-06 22:44:15,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:15,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854899335] [2023-11-06 22:44:15,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:15,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:15,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:44:15,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:15,386 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-06 22:44:15,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:15,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854899335] [2023-11-06 22:44:15,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854899335] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:15,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:15,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:44:15,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258694906] [2023-11-06 22:44:15,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:15,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:44:15,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:15,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:44:15,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:44:15,388 INFO L87 Difference]: Start difference. First operand 726 states and 1006 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) [2023-11-06 22:44:15,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:15,473 INFO L93 Difference]: Finished difference Result 1012 states and 1431 transitions. [2023-11-06 22:44:15,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:44:15,473 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 [2023-11-06 22:44:15,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:15,479 INFO L225 Difference]: With dead ends: 1012 [2023-11-06 22:44:15,480 INFO L226 Difference]: Without dead ends: 1010 [2023-11-06 22:44:15,480 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 [2023-11-06 22:44:15,481 INFO L413 NwaCegarLoop]: 985 mSDtfsCounter, 399 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 1962 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 [2023-11-06 22:44:15,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 1962 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:15,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2023-11-06 22:44:15,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 730. [2023-11-06 22:44:15,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 576 states have (on average 1.5815972222222223) internal successors, (911), 675 states have internal predecessors, (911), 56 states have call successors, (56), 12 states have call predecessors, (56), 10 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-06 22:44:15,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 1011 transitions. [2023-11-06 22:44:15,525 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 1011 transitions. Word has length 30 [2023-11-06 22:44:15,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:15,525 INFO L495 AbstractCegarLoop]: Abstraction has 730 states and 1011 transitions. [2023-11-06 22:44:15,526 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) [2023-11-06 22:44:15,526 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 1011 transitions. [2023-11-06 22:44:15,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-06 22:44:15,527 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:15,527 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] [2023-11-06 22:44:15,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:44:15,527 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 93 more)] === [2023-11-06 22:44:15,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:15,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1703914849, now seen corresponding path program 1 times [2023-11-06 22:44:15,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:15,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615885178] [2023-11-06 22:44:15,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:15,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:15,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:15,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:44:15,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:15,764 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-06 22:44:15,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:15,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615885178] [2023-11-06 22:44:15,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615885178] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:15,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086248804] [2023-11-06 22:44:15,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:15,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:15,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:15,766 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:15,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:44:16,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:16,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:44:16,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:16,321 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:44:16,321 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:44:16,440 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:44:16,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086248804] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:44:16,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:44:16,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 14 [2023-11-06 22:44:16,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109671773] [2023-11-06 22:44:16,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:44:16,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:44:16,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:16,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:44:16,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:44:16,442 INFO L87 Difference]: Start difference. First operand 730 states and 1011 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) [2023-11-06 22:44:16,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:16,669 INFO L93 Difference]: Finished difference Result 1462 states and 2030 transitions. [2023-11-06 22:44:16,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:44:16,669 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 [2023-11-06 22:44:16,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:16,676 INFO L225 Difference]: With dead ends: 1462 [2023-11-06 22:44:16,676 INFO L226 Difference]: Without dead ends: 747 [2023-11-06 22:44:16,680 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 [2023-11-06 22:44:16,683 INFO L413 NwaCegarLoop]: 984 mSDtfsCounter, 7 mSDsluCounter, 5886 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 6870 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:16,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 6870 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:44:16,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2023-11-06 22:44:16,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 747. [2023-11-06 22:44:16,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 594 states have (on average 1.5622895622895623) internal successors, (928), 692 states have internal predecessors, (928), 56 states have call successors, (56), 12 states have call predecessors, (56), 10 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-06 22:44:16,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1028 transitions. [2023-11-06 22:44:16,727 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1028 transitions. Word has length 31 [2023-11-06 22:44:16,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:16,728 INFO L495 AbstractCegarLoop]: Abstraction has 747 states and 1028 transitions. [2023-11-06 22:44:16,728 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) [2023-11-06 22:44:16,728 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1028 transitions. [2023-11-06 22:44:16,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-06 22:44:16,734 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:16,735 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] [2023-11-06 22:44:16,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:16,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:16,943 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 93 more)] === [2023-11-06 22:44:16,943 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:16,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1431119266, now seen corresponding path program 1 times [2023-11-06 22:44:16,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:16,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592608697] [2023-11-06 22:44:16,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:16,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:17,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:44:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:17,159 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-06 22:44:17,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:17,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592608697] [2023-11-06 22:44:17,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592608697] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:17,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:17,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:44:17,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397182411] [2023-11-06 22:44:17,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:17,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:44:17,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:17,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:44:17,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:44:17,162 INFO L87 Difference]: Start difference. First operand 747 states and 1028 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) [2023-11-06 22:44:17,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:17,213 INFO L93 Difference]: Finished difference Result 747 states and 1028 transitions. [2023-11-06 22:44:17,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:44:17,213 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 [2023-11-06 22:44:17,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:17,218 INFO L225 Difference]: With dead ends: 747 [2023-11-06 22:44:17,218 INFO L226 Difference]: Without dead ends: 746 [2023-11-06 22:44:17,219 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 [2023-11-06 22:44:17,219 INFO L413 NwaCegarLoop]: 988 mSDtfsCounter, 0 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1972 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 [2023-11-06 22:44:17,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1972 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:17,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2023-11-06 22:44:17,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 744. [2023-11-06 22:44:17,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 592 states have (on average 1.5625) internal successors, (925), 689 states have internal predecessors, (925), 56 states have call successors, (56), 12 states have call predecessors, (56), 10 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-06 22:44:17,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1025 transitions. [2023-11-06 22:44:17,261 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1025 transitions. Word has length 50 [2023-11-06 22:44:17,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:17,261 INFO L495 AbstractCegarLoop]: Abstraction has 744 states and 1025 transitions. [2023-11-06 22:44:17,262 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) [2023-11-06 22:44:17,262 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1025 transitions. [2023-11-06 22:44:17,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-06 22:44:17,266 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:17,266 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] [2023-11-06 22:44:17,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:44:17,267 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 93 more)] === [2023-11-06 22:44:17,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:17,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1431117537, now seen corresponding path program 1 times [2023-11-06 22:44:17,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:17,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538153236] [2023-11-06 22:44:17,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:17,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:17,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:44:17,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:17,567 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-06 22:44:17,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:17,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538153236] [2023-11-06 22:44:17,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538153236] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:17,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:17,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:44:17,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421815330] [2023-11-06 22:44:17,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:17,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:44:17,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:17,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:44:17,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:44:17,571 INFO L87 Difference]: Start difference. First operand 744 states and 1025 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) [2023-11-06 22:44:17,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:17,655 INFO L93 Difference]: Finished difference Result 755 states and 1038 transitions. [2023-11-06 22:44:17,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:44:17,655 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 [2023-11-06 22:44:17,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:17,661 INFO L225 Difference]: With dead ends: 755 [2023-11-06 22:44:17,661 INFO L226 Difference]: Without dead ends: 753 [2023-11-06 22:44:17,662 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 [2023-11-06 22:44:17,662 INFO L413 NwaCegarLoop]: 986 mSDtfsCounter, 2 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1967 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 [2023-11-06 22:44:17,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1967 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:17,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2023-11-06 22:44:17,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 752. [2023-11-06 22:44:17,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 600 states have (on average 1.5583333333333333) internal successors, (935), 697 states have internal predecessors, (935), 56 states have call successors, (56), 12 states have call predecessors, (56), 10 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-06 22:44:17,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1035 transitions. [2023-11-06 22:44:17,704 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1035 transitions. Word has length 50 [2023-11-06 22:44:17,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:17,705 INFO L495 AbstractCegarLoop]: Abstraction has 752 states and 1035 transitions. [2023-11-06 22:44:17,705 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) [2023-11-06 22:44:17,705 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1035 transitions. [2023-11-06 22:44:17,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-06 22:44:17,706 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:17,706 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] [2023-11-06 22:44:17,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:44:17,706 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 93 more)] === [2023-11-06 22:44:17,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:17,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1882978592, now seen corresponding path program 1 times [2023-11-06 22:44:17,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:17,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945291993] [2023-11-06 22:44:17,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:17,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:17,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:17,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:44:17,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:18,002 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-06 22:44:18,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:18,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945291993] [2023-11-06 22:44:18,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945291993] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:18,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254161512] [2023-11-06 22:44:18,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:18,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:18,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:18,005 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:18,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:44:18,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:18,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:44:18,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:18,565 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-06 22:44:18,565 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:44:18,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254161512] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:18,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:44:18,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-06 22:44:18,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48389038] [2023-11-06 22:44:18,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:18,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:44:18,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:18,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:44:18,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:18,569 INFO L87 Difference]: Start difference. First operand 752 states and 1035 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) [2023-11-06 22:44:18,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:18,762 INFO L93 Difference]: Finished difference Result 1036 states and 1459 transitions. [2023-11-06 22:44:18,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:44:18,763 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 [2023-11-06 22:44:18,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:18,770 INFO L225 Difference]: With dead ends: 1036 [2023-11-06 22:44:18,770 INFO L226 Difference]: Without dead ends: 1035 [2023-11-06 22:44:18,771 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 [2023-11-06 22:44:18,771 INFO L413 NwaCegarLoop]: 1396 mSDtfsCounter, 799 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 2378 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:18,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 2378 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:44:18,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2023-11-06 22:44:18,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 751. [2023-11-06 22:44:18,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 600 states have (on average 1.5566666666666666) internal successors, (934), 696 states have internal predecessors, (934), 56 states have call successors, (56), 12 states have call predecessors, (56), 10 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-06 22:44:18,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1034 transitions. [2023-11-06 22:44:18,818 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1034 transitions. Word has length 52 [2023-11-06 22:44:18,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:18,819 INFO L495 AbstractCegarLoop]: Abstraction has 751 states and 1034 transitions. [2023-11-06 22:44:18,819 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) [2023-11-06 22:44:18,820 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1034 transitions. [2023-11-06 22:44:18,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-06 22:44:18,820 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:18,820 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] [2023-11-06 22:44:18,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:19,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 22:44:19,029 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 93 more)] === [2023-11-06 22:44:19,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:19,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1757205346, now seen corresponding path program 1 times [2023-11-06 22:44:19,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:19,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826679568] [2023-11-06 22:44:19,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:19,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:19,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:19,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:44:19,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:19,326 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-06 22:44:19,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:19,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826679568] [2023-11-06 22:44:19,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826679568] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:19,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393316920] [2023-11-06 22:44:19,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:19,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:19,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:19,329 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:19,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:44:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:19,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 828 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:44:19,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:19,894 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-06 22:44:19,894 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:44:19,931 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-06 22:44:19,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393316920] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:44:19,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:44:19,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-06 22:44:19,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587587839] [2023-11-06 22:44:19,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:44:19,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:44:19,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:19,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:44:19,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:44:19,935 INFO L87 Difference]: Start difference. First operand 751 states and 1034 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) [2023-11-06 22:44:20,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:20,246 INFO L93 Difference]: Finished difference Result 1884 states and 2724 transitions. [2023-11-06 22:44:20,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:44:20,247 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 [2023-11-06 22:44:20,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:20,259 INFO L225 Difference]: With dead ends: 1884 [2023-11-06 22:44:20,259 INFO L226 Difference]: Without dead ends: 1883 [2023-11-06 22:44:20,260 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 [2023-11-06 22:44:20,261 INFO L413 NwaCegarLoop]: 982 mSDtfsCounter, 2725 mSDsluCounter, 2821 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2757 SdHoareTripleChecker+Valid, 3803 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:20,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2757 Valid, 3803 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:44:20,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1883 states. [2023-11-06 22:44:20,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1883 to 763. [2023-11-06 22:44:20,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 612 states have (on average 1.5506535947712419) internal successors, (949), 708 states have internal predecessors, (949), 56 states have call successors, (56), 12 states have call predecessors, (56), 10 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-06 22:44:20,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 1049 transitions. [2023-11-06 22:44:20,339 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 1049 transitions. Word has length 53 [2023-11-06 22:44:20,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:20,339 INFO L495 AbstractCegarLoop]: Abstraction has 763 states and 1049 transitions. [2023-11-06 22:44:20,340 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) [2023-11-06 22:44:20,340 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 1049 transitions. [2023-11-06 22:44:20,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-06 22:44:20,341 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:20,341 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] [2023-11-06 22:44:20,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:20,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 22:44:20,550 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 93 more)] === [2023-11-06 22:44:20,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:20,551 INFO L85 PathProgramCache]: Analyzing trace with hash 2034040074, now seen corresponding path program 1 times [2023-11-06 22:44:20,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:20,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059393031] [2023-11-06 22:44:20,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:20,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:20,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:44:20,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:20,842 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-06 22:44:20,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:20,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059393031] [2023-11-06 22:44:20,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059393031] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:20,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616372127] [2023-11-06 22:44:20,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:20,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:20,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:20,845 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:20,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:44:21,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:21,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 785 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:44:21,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:21,378 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-06 22:44:21,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:44:21,409 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-06 22:44:21,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616372127] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:44:21,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:44:21,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-06 22:44:21,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481462264] [2023-11-06 22:44:21,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:44:21,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:44:21,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:21,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:44:21,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:44:21,412 INFO L87 Difference]: Start difference. First operand 763 states and 1049 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) [2023-11-06 22:44:21,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:21,528 INFO L93 Difference]: Finished difference Result 1500 states and 2074 transitions. [2023-11-06 22:44:21,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:44:21,528 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 [2023-11-06 22:44:21,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:21,533 INFO L225 Difference]: With dead ends: 1500 [2023-11-06 22:44:21,534 INFO L226 Difference]: Without dead ends: 781 [2023-11-06 22:44:21,536 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 [2023-11-06 22:44:21,537 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 4 mSDsluCounter, 3932 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4919 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:21,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 4919 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:21,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2023-11-06 22:44:21,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 781. [2023-11-06 22:44:21,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 630 states have (on average 1.534920634920635) internal successors, (967), 726 states have internal predecessors, (967), 56 states have call successors, (56), 12 states have call predecessors, (56), 10 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-06 22:44:21,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 1067 transitions. [2023-11-06 22:44:21,599 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 1067 transitions. Word has length 58 [2023-11-06 22:44:21,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:21,599 INFO L495 AbstractCegarLoop]: Abstraction has 781 states and 1067 transitions. [2023-11-06 22:44:21,600 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) [2023-11-06 22:44:21,600 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 1067 transitions. [2023-11-06 22:44:21,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-06 22:44:21,600 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:21,601 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] [2023-11-06 22:44:21,614 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-06 22:44:21,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-06 22:44:21,814 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 93 more)] === [2023-11-06 22:44:21,815 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:21,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1105443942, now seen corresponding path program 1 times [2023-11-06 22:44:21,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:21,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442573989] [2023-11-06 22:44:21,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:21,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:21,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:22,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:44:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:22,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-06 22:44:22,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:22,142 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-06 22:44:22,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:22,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442573989] [2023-11-06 22:44:22,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442573989] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:22,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:22,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:44:22,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729369650] [2023-11-06 22:44:22,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:22,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:44:22,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:22,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:44:22,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:44:22,145 INFO L87 Difference]: Start difference. First operand 781 states and 1067 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) [2023-11-06 22:44:26,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:26,434 INFO L93 Difference]: Finished difference Result 1591 states and 2206 transitions. [2023-11-06 22:44:26,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:44:26,434 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 [2023-11-06 22:44:26,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:26,441 INFO L225 Difference]: With dead ends: 1591 [2023-11-06 22:44:26,442 INFO L226 Difference]: Without dead ends: 914 [2023-11-06 22:44:26,444 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 [2023-11-06 22:44:26,445 INFO L413 NwaCegarLoop]: 981 mSDtfsCounter, 195 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 2476 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:26,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 2476 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-06 22:44:26,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2023-11-06 22:44:26,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 822. [2023-11-06 22:44:26,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 670 states have (on average 1.5253731343283583) internal successors, (1022), 766 states have internal predecessors, (1022), 57 states have call successors, (57), 12 states have call predecessors, (57), 10 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-06 22:44:26,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1124 transitions. [2023-11-06 22:44:26,510 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1124 transitions. Word has length 62 [2023-11-06 22:44:26,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:26,510 INFO L495 AbstractCegarLoop]: Abstraction has 822 states and 1124 transitions. [2023-11-06 22:44:26,511 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) [2023-11-06 22:44:26,511 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1124 transitions. [2023-11-06 22:44:26,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-06 22:44:26,512 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:26,512 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] [2023-11-06 22:44:26,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:44:26,513 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 93 more)] === [2023-11-06 22:44:26,514 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:26,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1474690497, now seen corresponding path program 1 times [2023-11-06 22:44:26,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:26,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43008692] [2023-11-06 22:44:26,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:26,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:26,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:26,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:44:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:26,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-06 22:44:26,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:26,755 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-06 22:44:26,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:26,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43008692] [2023-11-06 22:44:26,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43008692] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:26,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:26,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:44:26,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558159839] [2023-11-06 22:44:26,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:26,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:44:26,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:26,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:44:26,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:44:26,758 INFO L87 Difference]: Start difference. First operand 822 states and 1124 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) [2023-11-06 22:44:29,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:44:31,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:31,666 INFO L93 Difference]: Finished difference Result 859 states and 1169 transitions. [2023-11-06 22:44:31,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:44:31,666 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 [2023-11-06 22:44:31,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:31,672 INFO L225 Difference]: With dead ends: 859 [2023-11-06 22:44:31,673 INFO L226 Difference]: Without dead ends: 857 [2023-11-06 22:44:31,673 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 [2023-11-06 22:44:31,674 INFO L413 NwaCegarLoop]: 960 mSDtfsCounter, 73 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 56 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 2505 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:31,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 2505 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 370 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2023-11-06 22:44:31,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2023-11-06 22:44:31,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 822. [2023-11-06 22:44:31,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 670 states have (on average 1.5223880597014925) internal successors, (1020), 766 states have internal predecessors, (1020), 57 states have call successors, (57), 12 states have call predecessors, (57), 10 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-06 22:44:31,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1122 transitions. [2023-11-06 22:44:31,729 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1122 transitions. Word has length 64 [2023-11-06 22:44:31,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:31,729 INFO L495 AbstractCegarLoop]: Abstraction has 822 states and 1122 transitions. [2023-11-06 22:44:31,729 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) [2023-11-06 22:44:31,730 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1122 transitions. [2023-11-06 22:44:31,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-06 22:44:31,730 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:31,731 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] [2023-11-06 22:44:31,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 22:44:31,731 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 93 more)] === [2023-11-06 22:44:31,732 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:31,732 INFO L85 PathProgramCache]: Analyzing trace with hash 922509171, now seen corresponding path program 2 times [2023-11-06 22:44:31,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:31,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218966259] [2023-11-06 22:44:31,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:31,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:32,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:44:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:32,123 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-06 22:44:32,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:32,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218966259] [2023-11-06 22:44:32,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218966259] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:32,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179458731] [2023-11-06 22:44:32,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:44:32,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:32,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:32,128 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:32,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:44:32,663 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:44:32,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:44:32,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:44:32,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:32,752 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2023-11-06 22:44:32,752 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:44:32,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179458731] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:32,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:44:32,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2023-11-06 22:44:32,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736515671] [2023-11-06 22:44:32,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:32,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:44:32,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:32,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:44:32,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:44:32,754 INFO L87 Difference]: Start difference. First operand 822 states and 1122 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) [2023-11-06 22:44:33,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:33,174 INFO L93 Difference]: Finished difference Result 1569 states and 2163 transitions. [2023-11-06 22:44:33,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:44:33,175 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 [2023-11-06 22:44:33,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:33,181 INFO L225 Difference]: With dead ends: 1569 [2023-11-06 22:44:33,181 INFO L226 Difference]: Without dead ends: 822 [2023-11-06 22:44:33,183 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 [2023-11-06 22:44:33,184 INFO L413 NwaCegarLoop]: 954 mSDtfsCounter, 722 mSDsluCounter, 2789 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 3743 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:33,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 3743 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:44:33,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2023-11-06 22:44:33,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 822. [2023-11-06 22:44:33,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 670 states have (on average 1.5208955223880598) internal successors, (1019), 766 states have internal predecessors, (1019), 57 states have call successors, (57), 12 states have call predecessors, (57), 10 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-06 22:44:33,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1121 transitions. [2023-11-06 22:44:33,267 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1121 transitions. Word has length 65 [2023-11-06 22:44:33,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:33,268 INFO L495 AbstractCegarLoop]: Abstraction has 822 states and 1121 transitions. [2023-11-06 22:44:33,268 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) [2023-11-06 22:44:33,268 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1121 transitions. [2023-11-06 22:44:33,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-06 22:44:33,269 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:33,269 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] [2023-11-06 22:44:33,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:33,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 22:44:33,477 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 93 more)] === [2023-11-06 22:44:33,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:33,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1023918504, now seen corresponding path program 2 times [2023-11-06 22:44:33,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:33,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914098835] [2023-11-06 22:44:33,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:33,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:33,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:44:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:33,797 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2023-11-06 22:44:33,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:33,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914098835] [2023-11-06 22:44:33,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914098835] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:33,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663486257] [2023-11-06 22:44:33,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:44:33,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:33,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:33,799 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:33,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:44:34,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:44:34,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:44:34,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 899 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:44:34,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:34,586 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 58 proven. 22 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-11-06 22:44:34,586 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:44:34,689 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 58 proven. 22 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-11-06 22:44:34,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663486257] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:44:34,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:44:34,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 14 [2023-11-06 22:44:34,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278944556] [2023-11-06 22:44:34,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:44:34,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:44:34,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:34,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:44:34,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:44:34,692 INFO L87 Difference]: Start difference. First operand 822 states and 1121 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) [2023-11-06 22:44:35,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:35,285 INFO L93 Difference]: Finished difference Result 1626 states and 2234 transitions. [2023-11-06 22:44:35,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-06 22:44:35,287 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 [2023-11-06 22:44:35,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:35,293 INFO L225 Difference]: With dead ends: 1626 [2023-11-06 22:44:35,293 INFO L226 Difference]: Without dead ends: 857 [2023-11-06 22:44:35,296 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 [2023-11-06 22:44:35,297 INFO L413 NwaCegarLoop]: 983 mSDtfsCounter, 11 mSDsluCounter, 4890 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 5873 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:35,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 5873 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:44:35,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2023-11-06 22:44:35,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 857. [2023-11-06 22:44:35,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 706 states have (on average 1.4929178470254958) internal successors, (1054), 801 states have internal predecessors, (1054), 57 states have call successors, (57), 12 states have call predecessors, (57), 10 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-06 22:44:35,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1156 transitions. [2023-11-06 22:44:35,365 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1156 transitions. Word has length 76 [2023-11-06 22:44:35,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:35,366 INFO L495 AbstractCegarLoop]: Abstraction has 857 states and 1156 transitions. [2023-11-06 22:44:35,366 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) [2023-11-06 22:44:35,366 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1156 transitions. [2023-11-06 22:44:35,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-06 22:44:35,368 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:35,368 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] [2023-11-06 22:44:35,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:35,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 22:44:35,577 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 93 more)] === [2023-11-06 22:44:35,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:35,577 INFO L85 PathProgramCache]: Analyzing trace with hash 533098734, now seen corresponding path program 1 times [2023-11-06 22:44:35,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:35,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484312798] [2023-11-06 22:44:35,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:35,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:35,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:36,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:44:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:36,097 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-06 22:44:36,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:36,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484312798] [2023-11-06 22:44:36,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484312798] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:36,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877628398] [2023-11-06 22:44:36,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:36,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:36,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:36,100 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:36,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:44:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:36,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 1096 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:44:36,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:36,868 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-06 22:44:36,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:44:36,965 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-06 22:44:36,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877628398] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:44:36,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:44:36,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 22:44:36,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131285147] [2023-11-06 22:44:36,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:44:36,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:44:36,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:36,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:44:36,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:44:36,969 INFO L87 Difference]: Start difference. First operand 857 states and 1156 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) [2023-11-06 22:44:37,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:37,750 INFO L93 Difference]: Finished difference Result 4092 states and 5922 transitions. [2023-11-06 22:44:37,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:44:37,751 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 [2023-11-06 22:44:37,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:37,777 INFO L225 Difference]: With dead ends: 4092 [2023-11-06 22:44:37,777 INFO L226 Difference]: Without dead ends: 4091 [2023-11-06 22:44:37,779 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 [2023-11-06 22:44:37,780 INFO L413 NwaCegarLoop]: 981 mSDtfsCounter, 7104 mSDsluCounter, 5965 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7184 SdHoareTripleChecker+Valid, 6946 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:37,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7184 Valid, 6946 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:44:37,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4091 states. [2023-11-06 22:44:37,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4091 to 881. [2023-11-06 22:44:37,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 730 states have (on average 1.484931506849315) internal successors, (1084), 825 states have internal predecessors, (1084), 57 states have call successors, (57), 12 states have call predecessors, (57), 10 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-06 22:44:37,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1186 transitions. [2023-11-06 22:44:37,877 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1186 transitions. Word has length 100 [2023-11-06 22:44:37,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:37,877 INFO L495 AbstractCegarLoop]: Abstraction has 881 states and 1186 transitions. [2023-11-06 22:44:37,877 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) [2023-11-06 22:44:37,878 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1186 transitions. [2023-11-06 22:44:37,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-06 22:44:37,879 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:37,879 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] [2023-11-06 22:44:37,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:38,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:38,088 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 93 more)] === [2023-11-06 22:44:38,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:38,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1503069911, now seen corresponding path program 1 times [2023-11-06 22:44:38,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:38,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708220813] [2023-11-06 22:44:38,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:38,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:38,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:38,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:44:38,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:38,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-06 22:44:38,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:38,696 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-06 22:44:38,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:38,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708220813] [2023-11-06 22:44:38,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708220813] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:38,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:38,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:44:38,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018528057] [2023-11-06 22:44:38,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:38,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:44:38,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:38,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:44:38,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:38,699 INFO L87 Difference]: Start difference. First operand 881 states and 1186 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) [2023-11-06 22:44:42,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:42,517 INFO L93 Difference]: Finished difference Result 1548 states and 2118 transitions. [2023-11-06 22:44:42,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:44:42,518 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 [2023-11-06 22:44:42,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:42,524 INFO L225 Difference]: With dead ends: 1548 [2023-11-06 22:44:42,525 INFO L226 Difference]: Without dead ends: 923 [2023-11-06 22:44:42,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:44:42,528 INFO L413 NwaCegarLoop]: 957 mSDtfsCounter, 1125 mSDsluCounter, 1462 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 2419 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:42,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1158 Valid, 2419 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-06 22:44:42,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2023-11-06 22:44:42,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 885. [2023-11-06 22:44:42,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 733 states have (on average 1.4815825375170533) internal successors, (1086), 828 states have internal predecessors, (1086), 57 states have call successors, (57), 13 states have call predecessors, (57), 11 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-06 22:44:42,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1188 transitions. [2023-11-06 22:44:42,596 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1188 transitions. Word has length 106 [2023-11-06 22:44:42,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:42,596 INFO L495 AbstractCegarLoop]: Abstraction has 885 states and 1188 transitions. [2023-11-06 22:44:42,597 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) [2023-11-06 22:44:42,597 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1188 transitions. [2023-11-06 22:44:42,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-06 22:44:42,598 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:42,598 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] [2023-11-06 22:44:42,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-06 22:44:42,599 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 93 more)] === [2023-11-06 22:44:42,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:42,599 INFO L85 PathProgramCache]: Analyzing trace with hash -271874185, now seen corresponding path program 1 times [2023-11-06 22:44:42,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:42,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538653589] [2023-11-06 22:44:42,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:42,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:42,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:44:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-06 22:44:43,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,061 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-06 22:44:43,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:43,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538653589] [2023-11-06 22:44:43,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538653589] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:43,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626219794] [2023-11-06 22:44:43,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:43,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:43,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:43,065 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:43,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:44:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 1187 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:44:43,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:43,915 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-06 22:44:43,915 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:44:43,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626219794] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:43,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:44:43,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-11-06 22:44:43,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138068136] [2023-11-06 22:44:43,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:43,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:44:43,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:43,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:44:43,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:44:43,918 INFO L87 Difference]: Start difference. First operand 885 states and 1188 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) [2023-11-06 22:44:44,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:44,250 INFO L93 Difference]: Finished difference Result 1638 states and 2256 transitions. [2023-11-06 22:44:44,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:44:44,251 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 [2023-11-06 22:44:44,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:44,258 INFO L225 Difference]: With dead ends: 1638 [2023-11-06 22:44:44,258 INFO L226 Difference]: Without dead ends: 943 [2023-11-06 22:44:44,261 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 [2023-11-06 22:44:44,262 INFO L413 NwaCegarLoop]: 959 mSDtfsCounter, 450 mSDsluCounter, 2417 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 3376 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:44,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 3376 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:44:44,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2023-11-06 22:44:44,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 867. [2023-11-06 22:44:44,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 724 states have (on average 1.468232044198895) internal successors, (1063), 810 states have internal predecessors, (1063), 57 states have call successors, (57), 13 states have call predecessors, (57), 11 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-06 22:44:44,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1165 transitions. [2023-11-06 22:44:44,334 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1165 transitions. Word has length 108 [2023-11-06 22:44:44,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:44,335 INFO L495 AbstractCegarLoop]: Abstraction has 867 states and 1165 transitions. [2023-11-06 22:44:44,335 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) [2023-11-06 22:44:44,335 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1165 transitions. [2023-11-06 22:44:44,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-06 22:44:44,337 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:44,337 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] [2023-11-06 22:44:44,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:44,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:44,546 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 93 more)] === [2023-11-06 22:44:44,547 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:44,547 INFO L85 PathProgramCache]: Analyzing trace with hash 721928986, now seen corresponding path program 1 times [2023-11-06 22:44:44,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:44,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813589620] [2023-11-06 22:44:44,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:44,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:44,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:44,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:44:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:44,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-06 22:44:44,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:44,855 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2023-11-06 22:44:44,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:44,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813589620] [2023-11-06 22:44:44,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813589620] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:44,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:44,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:44:44,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079321804] [2023-11-06 22:44:44,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:44,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:44:44,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:44,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:44:44,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:44:44,858 INFO L87 Difference]: Start difference. First operand 867 states and 1165 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) [2023-11-06 22:44:49,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:44:49,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:49,916 INFO L93 Difference]: Finished difference Result 905 states and 1213 transitions. [2023-11-06 22:44:49,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:44:49,917 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 [2023-11-06 22:44:49,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:49,924 INFO L225 Difference]: With dead ends: 905 [2023-11-06 22:44:49,925 INFO L226 Difference]: Without dead ends: 904 [2023-11-06 22:44:49,926 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 [2023-11-06 22:44:49,926 INFO L413 NwaCegarLoop]: 949 mSDtfsCounter, 74 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 2471 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:49,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 2471 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-06 22:44:49,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2023-11-06 22:44:50,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 866. [2023-11-06 22:44:50,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 724 states have (on average 1.4668508287292819) internal successors, (1062), 809 states have internal predecessors, (1062), 57 states have call successors, (57), 13 states have call predecessors, (57), 11 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-06 22:44:50,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1164 transitions. [2023-11-06 22:44:50,028 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1164 transitions. Word has length 110 [2023-11-06 22:44:50,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:50,028 INFO L495 AbstractCegarLoop]: Abstraction has 866 states and 1164 transitions. [2023-11-06 22:44:50,029 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) [2023-11-06 22:44:50,029 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1164 transitions. [2023-11-06 22:44:50,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-06 22:44:50,030 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:50,031 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] [2023-11-06 22:44:50,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-06 22:44:50,031 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 93 more)] === [2023-11-06 22:44:50,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:50,032 INFO L85 PathProgramCache]: Analyzing trace with hash 904962582, now seen corresponding path program 1 times [2023-11-06 22:44:50,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:50,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746506062] [2023-11-06 22:44:50,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:50,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:44:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-06 22:44:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,195 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-11-06 22:44:51,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:51,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746506062] [2023-11-06 22:44:51,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746506062] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:51,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:51,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:44:51,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001889493] [2023-11-06 22:44:51,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:51,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:44:51,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:51,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:44:51,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:51,198 INFO L87 Difference]: Start difference. First operand 866 states and 1164 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:44:55,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:55,891 INFO L93 Difference]: Finished difference Result 1612 states and 2201 transitions. [2023-11-06 22:44:55,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:44:55,891 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), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 111 [2023-11-06 22:44:55,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:55,897 INFO L225 Difference]: With dead ends: 1612 [2023-11-06 22:44:55,897 INFO L226 Difference]: Without dead ends: 904 [2023-11-06 22:44:55,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:44:55,900 INFO L413 NwaCegarLoop]: 947 mSDtfsCounter, 74 mSDsluCounter, 2443 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 3390 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:55,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 3390 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-06 22:44:55,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2023-11-06 22:44:55,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 869. [2023-11-06 22:44:55,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 726 states have (on average 1.4669421487603307) internal successors, (1065), 812 states have internal predecessors, (1065), 57 states have call successors, (57), 13 states have call predecessors, (57), 12 states have return successors, (47), 45 states have call predecessors, (47), 45 states have call successors, (47) [2023-11-06 22:44:55,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1169 transitions. [2023-11-06 22:44:55,973 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1169 transitions. Word has length 111 [2023-11-06 22:44:55,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:55,974 INFO L495 AbstractCegarLoop]: Abstraction has 869 states and 1169 transitions. [2023-11-06 22:44:55,974 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), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:44:55,974 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1169 transitions. [2023-11-06 22:44:55,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-06 22:44:55,975 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:55,976 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, 1] [2023-11-06 22:44:55,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-06 22:44:55,976 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 93 more)] === [2023-11-06 22:44:55,976 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:55,977 INFO L85 PathProgramCache]: Analyzing trace with hash -531003972, now seen corresponding path program 1 times [2023-11-06 22:44:55,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:55,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504906739] [2023-11-06 22:44:55,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:55,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:56,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:56,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:44:56,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:56,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-06 22:44:56,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:56,930 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-11-06 22:44:56,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:56,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504906739] [2023-11-06 22:44:56,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504906739] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:56,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014855293] [2023-11-06 22:44:56,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:56,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:56,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:56,943 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:56,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 22:44:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:58,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 1207 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:44:58,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:58,804 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-11-06 22:44:58,804 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:44:58,915 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-11-06 22:44:58,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014855293] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:44:58,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:44:58,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2023-11-06 22:44:58,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399608984] [2023-11-06 22:44:58,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:44:58,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:44:58,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:58,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:44:58,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:44:58,918 INFO L87 Difference]: Start difference. First operand 869 states and 1169 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 10 states have internal predecessors, (57), 1 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 22:45:05,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:45:05,424 INFO L93 Difference]: Finished difference Result 1633 states and 2234 transitions. [2023-11-06 22:45:05,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:45:05,425 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 10 states have internal predecessors, (57), 1 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 112 [2023-11-06 22:45:05,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:45:05,432 INFO L225 Difference]: With dead ends: 1633 [2023-11-06 22:45:05,432 INFO L226 Difference]: Without dead ends: 922 [2023-11-06 22:45:05,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:45:05,436 INFO L413 NwaCegarLoop]: 949 mSDtfsCounter, 82 mSDsluCounter, 4277 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 5226 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:45:05,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 5226 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-11-06 22:45:05,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2023-11-06 22:45:05,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 874. [2023-11-06 22:45:05,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 731 states have (on average 1.4692202462380302) internal successors, (1074), 816 states have internal predecessors, (1074), 57 states have call successors, (57), 14 states have call predecessors, (57), 12 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-06 22:45:05,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1176 transitions. [2023-11-06 22:45:05,518 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1176 transitions. Word has length 112 [2023-11-06 22:45:05,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:45:05,518 INFO L495 AbstractCegarLoop]: Abstraction has 874 states and 1176 transitions. [2023-11-06 22:45:05,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 10 states have internal predecessors, (57), 1 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 22:45:05,519 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1176 transitions. [2023-11-06 22:45:05,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-06 22:45:05,521 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:45:05,521 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:05,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:45:05,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:45:05,746 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 93 more)] === [2023-11-06 22:45:05,746 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:05,747 INFO L85 PathProgramCache]: Analyzing trace with hash 105824020, now seen corresponding path program 1 times [2023-11-06 22:45:05,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:05,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752705705] [2023-11-06 22:45:05,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:05,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:05,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:06,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:45:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:06,353 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-11-06 22:45:06,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:06,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752705705] [2023-11-06 22:45:06,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752705705] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:45:06,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364983614] [2023-11-06 22:45:06,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:06,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:45:06,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:45:06,356 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:45:06,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-06 22:45:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:07,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:45:07,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:45:07,479 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-11-06 22:45:07,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:45:07,641 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-11-06 22:45:07,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364983614] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:45:07,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:45:07,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-06 22:45:07,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158382346] [2023-11-06 22:45:07,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:45:07,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:45:07,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:07,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:45:07,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:45:07,644 INFO L87 Difference]: Start difference. First operand 874 states and 1176 transitions. Second operand has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 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) [2023-11-06 22:45:07,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:45:07,830 INFO L93 Difference]: Finished difference Result 983 states and 1293 transitions. [2023-11-06 22:45:07,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:45:07,839 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 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 113 [2023-11-06 22:45:07,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:45:07,851 INFO L225 Difference]: With dead ends: 983 [2023-11-06 22:45:07,851 INFO L226 Difference]: Without dead ends: 982 [2023-11-06 22:45:07,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:45:07,853 INFO L413 NwaCegarLoop]: 973 mSDtfsCounter, 4 mSDsluCounter, 1946 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2919 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:45:07,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2919 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:45:07,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2023-11-06 22:45:07,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 979. [2023-11-06 22:45:07,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 979 states, 836 states have (on average 1.417464114832536) internal successors, (1185), 921 states have internal predecessors, (1185), 57 states have call successors, (57), 14 states have call predecessors, (57), 12 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-06 22:45:07,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1287 transitions. [2023-11-06 22:45:07,935 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1287 transitions. Word has length 113 [2023-11-06 22:45:07,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:45:07,935 INFO L495 AbstractCegarLoop]: Abstraction has 979 states and 1287 transitions. [2023-11-06 22:45:07,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 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) [2023-11-06 22:45:07,936 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1287 transitions. [2023-11-06 22:45:07,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-06 22:45:07,938 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:45:07,938 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 4, 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] [2023-11-06 22:45:07,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-06 22:45:08,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:45:08,149 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 93 more)] === [2023-11-06 22:45:08,149 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:08,150 INFO L85 PathProgramCache]: Analyzing trace with hash -86025322, now seen corresponding path program 2 times [2023-11-06 22:45:08,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:08,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800313316] [2023-11-06 22:45:08,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:08,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:45:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-06 22:45:09,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,559 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-11-06 22:45:09,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:09,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800313316] [2023-11-06 22:45:09,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800313316] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:45:09,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21987030] [2023-11-06 22:45:09,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:45:09,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:45:09,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:45:09,562 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:45:09,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-06 22:45:11,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:45:11,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:45:11,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 1252 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:45:12,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:45:12,142 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-11-06 22:45:12,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:45:12,605 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-11-06 22:45:12,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21987030] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:45:12,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:45:12,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2023-11-06 22:45:12,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061056883] [2023-11-06 22:45:12,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:45:12,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-06 22:45:12,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:12,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 22:45:12,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:45:12,609 INFO L87 Difference]: Start difference. First operand 979 states and 1287 transitions. Second operand has 20 states, 20 states have (on average 3.3) internal successors, (66), 19 states have internal predecessors, (66), 1 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 22:45:23,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:45:25,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:45:27,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:45:27,793 INFO L93 Difference]: Finished difference Result 1766 states and 2387 transitions. [2023-11-06 22:45:27,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-06 22:45:27,794 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.3) internal successors, (66), 19 states have internal predecessors, (66), 1 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 115 [2023-11-06 22:45:27,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:45:27,802 INFO L225 Difference]: With dead ends: 1766 [2023-11-06 22:45:27,802 INFO L226 Difference]: Without dead ends: 1046 [2023-11-06 22:45:27,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=382, Invalid=878, Unknown=0, NotChecked=0, Total=1260 [2023-11-06 22:45:27,806 INFO L413 NwaCegarLoop]: 951 mSDtfsCounter, 103 mSDsluCounter, 8870 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 67 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 9821 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:45:27,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 9821 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1095 Invalid, 1 Unknown, 0 Unchecked, 12.8s Time] [2023-11-06 22:45:27,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2023-11-06 22:45:27,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 990. [2023-11-06 22:45:27,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 990 states, 847 states have (on average 1.409681227863046) internal successors, (1194), 932 states have internal predecessors, (1194), 57 states have call successors, (57), 14 states have call predecessors, (57), 12 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-06 22:45:27,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1296 transitions. [2023-11-06 22:45:27,936 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1296 transitions. Word has length 115 [2023-11-06 22:45:27,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:45:27,937 INFO L495 AbstractCegarLoop]: Abstraction has 990 states and 1296 transitions. [2023-11-06 22:45:27,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.3) internal successors, (66), 19 states have internal predecessors, (66), 1 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 22:45:27,937 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1296 transitions. [2023-11-06 22:45:27,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-06 22:45:27,939 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:45:27,940 INFO L195 NwaCegarLoop]: trace histogram [10, 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] [2023-11-06 22:45:27,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-06 22:45:28,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-06 22:45:28,157 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 93 more)] === [2023-11-06 22:45:28,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:28,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1972439510, now seen corresponding path program 3 times [2023-11-06 22:45:28,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:28,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463741363] [2023-11-06 22:45:28,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:28,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:28,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:29,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:45:29,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:29,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-06 22:45:29,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:29,922 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-11-06 22:45:29,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:29,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463741363] [2023-11-06 22:45:29,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463741363] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:45:29,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273071224] [2023-11-06 22:45:29,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:45:29,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:45:29,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:45:29,924 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:45:29,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a0253c-a7aa-45c5-88df-81d63000dddd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process