./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 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98cbdef7-2e8d-4118-93be-24b623a460e6/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98cbdef7-2e8d-4118-93be-24b623a460e6/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98cbdef7-2e8d-4118-93be-24b623a460e6/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98cbdef7-2e8d-4118-93be-24b623a460e6/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/touch-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98cbdef7-2e8d-4118-93be-24b623a460e6/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98cbdef7-2e8d-4118-93be-24b623a460e6/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 92be14a67e86afbc4131def98aa0a003182d56e7632aa27a6368c84fc66aa202 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:06:56,392 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:06:56,464 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98cbdef7-2e8d-4118-93be-24b623a460e6/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-25 00:06:56,471 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:06:56,471 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:06:56,499 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:06:56,500 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:06:56,500 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:06:56,501 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:06:56,502 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:06:56,502 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:06:56,503 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:06:56,504 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:06:56,504 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:06:56,505 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:06:56,505 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:06:56,506 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:06:56,506 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:06:56,507 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:06:56,507 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:06:56,508 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:06:56,513 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:06:56,514 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:06:56,515 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:06:56,515 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:06:56,515 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:06:56,516 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:06:56,516 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:06:56,517 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:06:56,517 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-25 00:06:56,517 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-25 00:06:56,518 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:06:56,518 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:06:56,519 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:06:56,520 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:06:56,520 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:06:56,521 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:06:56,521 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:06:56,521 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:06:56,521 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:06:56,522 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:06:56,523 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:06:56,523 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:06:56,524 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:06:56,524 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:06:56,524 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:06:56,525 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_98cbdef7-2e8d-4118-93be-24b623a460e6/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98cbdef7-2e8d-4118-93be-24b623a460e6/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92be14a67e86afbc4131def98aa0a003182d56e7632aa27a6368c84fc66aa202 [2023-11-25 00:06:56,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:06:56,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:06:56,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:06:56,811 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:06:56,813 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:06:56,814 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98cbdef7-2e8d-4118-93be-24b623a460e6/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/busybox-1.22.0/touch-1.i [2023-11-25 00:06:59,900 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:07:00,435 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:07:00,436 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98cbdef7-2e8d-4118-93be-24b623a460e6/sv-benchmarks/c/busybox-1.22.0/touch-1.i [2023-11-25 00:07:00,477 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98cbdef7-2e8d-4118-93be-24b623a460e6/bin/utaipan-verify-SwPr7d2a91/data/4886e4ddf/16faaf4b366d41ce9e86ddb05aa7c8d8/FLAGb24fe2ac8 [2023-11-25 00:07:00,493 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98cbdef7-2e8d-4118-93be-24b623a460e6/bin/utaipan-verify-SwPr7d2a91/data/4886e4ddf/16faaf4b366d41ce9e86ddb05aa7c8d8 [2023-11-25 00:07:00,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:07:00,497 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:07:00,499 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:07:00,499 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:07:00,505 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:07:00,506 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:07:00" (1/1) ... [2023-11-25 00:07:00,507 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d9338f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:00, skipping insertion in model container [2023-11-25 00:07:00,507 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:07:00" (1/1) ... [2023-11-25 00:07:00,618 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:07:02,737 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:07:02,780 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:07:02,974 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:07:03,252 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:07:03,252 WARN L675 CHandler]: The function localtime is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:07:03,252 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:07:03,252 WARN L675 CHandler]: The function mktime is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:07:03,253 WARN L675 CHandler]: The function strrchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:07:03,253 WARN L675 CHandler]: The function strtoll is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:07:03,253 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:07:03,253 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:07:03,253 WARN L675 CHandler]: The function close is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:07:03,261 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:07:03,262 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:03 WrapperNode [2023-11-25 00:07:03,263 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:07:03,264 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:07:03,264 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:07:03,265 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:07:03,272 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:03" (1/1) ... [2023-11-25 00:07:03,379 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:03" (1/1) ... [2023-11-25 00:07:03,548 INFO L138 Inliner]: procedures = 669, calls = 747, calls flagged for inlining = 38, calls inlined = 37, statements flattened = 2758 [2023-11-25 00:07:03,549 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:07:03,550 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:07:03,550 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:07:03,551 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:07:03,560 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:03" (1/1) ... [2023-11-25 00:07:03,561 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:03" (1/1) ... [2023-11-25 00:07:03,581 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:03" (1/1) ... [2023-11-25 00:07:03,581 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:03" (1/1) ... [2023-11-25 00:07:03,724 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:03" (1/1) ... [2023-11-25 00:07:03,760 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:03" (1/1) ... [2023-11-25 00:07:03,788 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:03" (1/1) ... [2023-11-25 00:07:03,808 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:03" (1/1) ... [2023-11-25 00:07:03,829 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:07:03,830 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:07:03,830 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:07:03,830 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:07:03,831 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:03" (1/1) ... [2023-11-25 00:07:03,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:07:03,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98cbdef7-2e8d-4118-93be-24b623a460e6/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:07:03,863 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98cbdef7-2e8d-4118-93be-24b623a460e6/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:07:03,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98cbdef7-2e8d-4118-93be-24b623a460e6/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:07:03,906 INFO L130 BoogieDeclarations]: Found specification of procedure close [2023-11-25 00:07:03,906 INFO L130 BoogieDeclarations]: Found specification of procedure localtime [2023-11-25 00:07:03,907 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-25 00:07:03,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-25 00:07:03,907 INFO L130 BoogieDeclarations]: Found specification of procedure ret_ERANGE [2023-11-25 00:07:03,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ret_ERANGE [2023-11-25 00:07:03,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-25 00:07:03,907 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-25 00:07:03,908 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-25 00:07:03,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-25 00:07:03,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-25 00:07:03,909 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-11-25 00:07:03,909 INFO L130 BoogieDeclarations]: Found specification of procedure mktime [2023-11-25 00:07:03,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-25 00:07:03,910 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-25 00:07:03,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:07:03,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-25 00:07:03,911 INFO L130 BoogieDeclarations]: Found specification of procedure utimes [2023-11-25 00:07:03,911 INFO L138 BoogieDeclarations]: Found implementation of procedure utimes [2023-11-25 00:07:03,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:07:03,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:07:03,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-25 00:07:03,912 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-25 00:07:03,912 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-25 00:07:03,913 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-25 00:07:03,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-25 00:07:03,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-25 00:07:03,913 INFO L130 BoogieDeclarations]: Found specification of procedure bb_perror_msg_and_die [2023-11-25 00:07:03,914 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_perror_msg_and_die [2023-11-25 00:07:03,914 INFO L130 BoogieDeclarations]: Found specification of procedure stat [2023-11-25 00:07:03,914 INFO L138 BoogieDeclarations]: Found implementation of procedure stat [2023-11-25 00:07:03,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-25 00:07:03,915 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-25 00:07:03,915 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-25 00:07:03,915 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-25 00:07:03,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-25 00:07:03,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-25 00:07:03,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-25 00:07:03,916 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-25 00:07:03,916 INFO L130 BoogieDeclarations]: Found specification of procedure bb_show_usage [2023-11-25 00:07:03,916 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_show_usage [2023-11-25 00:07:03,916 INFO L130 BoogieDeclarations]: Found specification of procedure bb_ascii_isalnum [2023-11-25 00:07:03,916 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_ascii_isalnum [2023-11-25 00:07:03,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-25 00:07:03,917 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2023-11-25 00:07:03,917 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-25 00:07:03,917 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-25 00:07:03,917 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-25 00:07:03,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:07:04,500 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:07:04,503 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:07:08,019 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:07:09,046 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:07:09,047 INFO L309 CfgBuilder]: Removed 27 assume(true) statements. [2023-11-25 00:07:09,049 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:07:09 BoogieIcfgContainer [2023-11-25 00:07:09,049 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:07:09,052 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:07:09,054 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:07:09,057 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:07:09,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:07:00" (1/3) ... [2023-11-25 00:07:09,059 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d9f3c83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:07:09, skipping insertion in model container [2023-11-25 00:07:09,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:03" (2/3) ... [2023-11-25 00:07:09,062 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d9f3c83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:07:09, skipping insertion in model container [2023-11-25 00:07:09,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:07:09" (3/3) ... [2023-11-25 00:07:09,063 INFO L112 eAbstractionObserver]: Analyzing ICFG touch-1.i [2023-11-25 00:07:09,085 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:07:09,085 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 96 error locations. [2023-11-25 00:07:09,167 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:07:09,174 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@433ff409, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:07:09,174 INFO L358 AbstractCegarLoop]: Starting to check reachability of 96 error locations. [2023-11-25 00:07:09,188 INFO L276 IsEmpty]: Start isEmpty. Operand has 568 states, 402 states have (on average 1.654228855721393) internal successors, (665), 500 states have internal predecessors, (665), 57 states have call successors, (57), 12 states have call predecessors, (57), 12 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2023-11-25 00:07:09,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-25 00:07:09,197 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:07:09,198 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-25 00:07:09,202 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)] === [2023-11-25 00:07:09,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:07:09,216 INFO L85 PathProgramCache]: Analyzing trace with hash 2240593, now seen corresponding path program 1 times [2023-11-25 00:07:09,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:07:09,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535424698] [2023-11-25 00:07:09,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:07:09,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:07:09,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:07:09,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:07:09,789 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:07:09,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535424698] [2023-11-25 00:07:09,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535424698] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:07:09,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:07:09,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-25 00:07:09,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063760099] [2023-11-25 00:07:09,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:07:09,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:07:09,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:07:09,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:07:09,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:07:09,852 INFO L87 Difference]: Start difference. First operand has 568 states, 402 states have (on average 1.654228855721393) internal successors, (665), 500 states have internal predecessors, (665), 57 states have call successors, (57), 12 states have call predecessors, (57), 12 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:07:11,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:07:11,858 INFO L93 Difference]: Finished difference Result 1121 states and 1557 transitions. [2023-11-25 00:07:11,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:07:11,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-25 00:07:11,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:07:11,902 INFO L225 Difference]: With dead ends: 1121 [2023-11-25 00:07:11,903 INFO L226 Difference]: Without dead ends: 554 [2023-11-25 00:07:11,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:07:11,914 INFO L413 NwaCegarLoop]: 626 mSDtfsCounter, 1 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-25 00:07:11,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1250 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-25 00:07:11,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2023-11-25 00:07:12,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 554. [2023-11-25 00:07:12,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 393 states have (on average 1.6030534351145038) internal successors, (630), 498 states have internal predecessors, (630), 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) [2023-11-25 00:07:12,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 732 transitions. [2023-11-25 00:07:12,032 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 732 transitions. Word has length 3 [2023-11-25 00:07:12,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:07:12,033 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 732 transitions. [2023-11-25 00:07:12,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:07:12,035 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 732 transitions. [2023-11-25 00:07:12,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-25 00:07:12,035 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:07:12,036 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-25 00:07:12,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-25 00:07:12,036 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)] === [2023-11-25 00:07:12,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:07:12,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1969562707, now seen corresponding path program 1 times [2023-11-25 00:07:12,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:07:12,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331973712] [2023-11-25 00:07:12,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:07:12,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:07:12,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:07:12,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:07:12,305 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:07:12,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331973712] [2023-11-25 00:07:12,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331973712] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:07:12,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943297630] [2023-11-25 00:07:12,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:07:12,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:07:12,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98cbdef7-2e8d-4118-93be-24b623a460e6/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:07:12,311 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98cbdef7-2e8d-4118-93be-24b623a460e6/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:07:12,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98cbdef7-2e8d-4118-93be-24b623a460e6/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-25 00:07:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:07:12,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:07:12,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:07:12,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:07:12,866 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:07:12,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943297630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:07:12,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-25 00:07:12,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-25 00:07:12,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128775643] [2023-11-25 00:07:12,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:07:12,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:07:12,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:07:12,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:07:12,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:07:12,869 INFO L87 Difference]: Start difference. First operand 554 states and 732 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:07:15,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:07:15,300 INFO L93 Difference]: Finished difference Result 554 states and 732 transitions. [2023-11-25 00:07:15,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:07:15,301 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-25 00:07:15,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:07:15,306 INFO L225 Difference]: With dead ends: 554 [2023-11-25 00:07:15,306 INFO L226 Difference]: Without dead ends: 553 [2023-11-25 00:07:15,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:07:15,308 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 2 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1866 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-25 00:07:15,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1866 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-25 00:07:15,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2023-11-25 00:07:15,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2023-11-25 00:07:15,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 393 states have (on average 1.6005089058524173) internal successors, (629), 497 states have internal predecessors, (629), 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) [2023-11-25 00:07:15,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 731 transitions. [2023-11-25 00:07:15,342 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 731 transitions. Word has length 6 [2023-11-25 00:07:15,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:07:15,342 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 731 transitions. [2023-11-25 00:07:15,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:07:15,343 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 731 transitions. [2023-11-25 00:07:15,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-25 00:07:15,343 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:07:15,344 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-25 00:07:15,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98cbdef7-2e8d-4118-93be-24b623a460e6/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-25 00:07:15,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98cbdef7-2e8d-4118-93be-24b623a460e6/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:07:15,551 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)] === [2023-11-25 00:07:15,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:07:15,551 INFO L85 PathProgramCache]: Analyzing trace with hash -926901362, now seen corresponding path program 1 times [2023-11-25 00:07:15,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:07:15,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309468641] [2023-11-25 00:07:15,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:07:15,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:07:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:07:15,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-25 00:07:15,725 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:07:15,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309468641] [2023-11-25 00:07:15,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309468641] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:07:15,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:07:15,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:07:15,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619259024] [2023-11-25 00:07:15,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:07:15,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:07:15,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:07:15,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:07:15,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:07:15,728 INFO L87 Difference]: Start difference. First operand 553 states and 731 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:07:17,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:07:17,385 INFO L93 Difference]: Finished difference Result 553 states and 731 transitions. [2023-11-25 00:07:17,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:07:17,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-25 00:07:17,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:07:17,390 INFO L225 Difference]: With dead ends: 553 [2023-11-25 00:07:17,391 INFO L226 Difference]: Without dead ends: 552 [2023-11-25 00:07:17,391 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 [2023-11-25 00:07:17,392 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 0 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-25 00:07:17,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1244 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-25 00:07:17,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2023-11-25 00:07:17,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 550. [2023-11-25 00:07:17,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 391 states have (on average 1.6010230179028133) internal successors, (626), 494 states have internal predecessors, (626), 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) [2023-11-25 00:07:17,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 728 transitions. [2023-11-25 00:07:17,437 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 728 transitions. Word has length 7 [2023-11-25 00:07:17,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:07:17,437 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 728 transitions. [2023-11-25 00:07:17,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:07:17,438 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 728 transitions. [2023-11-25 00:07:17,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-25 00:07:17,438 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:07:17,438 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:07:17,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-25 00:07:17,439 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)] === [2023-11-25 00:07:17,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:07:17,440 INFO L85 PathProgramCache]: Analyzing trace with hash 168024780, now seen corresponding path program 1 times [2023-11-25 00:07:17,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:07:17,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103104090] [2023-11-25 00:07:17,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:07:17,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:07:17,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:07:17,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:07:17,633 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:07:17,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103104090] [2023-11-25 00:07:17,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103104090] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:07:17,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488386135] [2023-11-25 00:07:17,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:07:17,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:07:17,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98cbdef7-2e8d-4118-93be-24b623a460e6/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:07:17,636 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98cbdef7-2e8d-4118-93be-24b623a460e6/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:07:17,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98cbdef7-2e8d-4118-93be-24b623a460e6/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-25 00:07:18,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:07:18,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-25 00:07:18,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:07:18,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-25 00:07:18,061 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:07:18,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488386135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:07:18,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-25 00:07:18,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-25 00:07:18,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349993003] [2023-11-25 00:07:18,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:07:18,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:07:18,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:07:18,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:07:18,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:07:18,064 INFO L87 Difference]: Start difference. First operand 550 states and 728 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-25 00:07:19,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:07:19,036 INFO L93 Difference]: Finished difference Result 550 states and 728 transitions. [2023-11-25 00:07:19,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:07:19,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-11-25 00:07:19,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:07:19,041 INFO L225 Difference]: With dead ends: 550 [2023-11-25 00:07:19,041 INFO L226 Difference]: Without dead ends: 548 [2023-11-25 00:07:19,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:07:19,043 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 473 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-25 00:07:19,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 807 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-25 00:07:19,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2023-11-25 00:07:19,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 548. [2023-11-25 00:07:19,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 391 states have (on average 1.5959079283887467) internal successors, (624), 492 states have internal predecessors, (624), 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) [2023-11-25 00:07:19,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 726 transitions. [2023-11-25 00:07:19,103 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 726 transitions. Word has length 9 [2023-11-25 00:07:19,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:07:19,104 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 726 transitions. [2023-11-25 00:07:19,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-25 00:07:19,105 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 726 transitions. [2023-11-25 00:07:19,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-25 00:07:19,106 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:07:19,107 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:07:19,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98cbdef7-2e8d-4118-93be-24b623a460e6/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-25 00:07:19,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98cbdef7-2e8d-4118-93be-24b623a460e6/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:07:19,316 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)] === [2023-11-25 00:07:19,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:07:19,316 INFO L85 PathProgramCache]: Analyzing trace with hash 913801304, now seen corresponding path program 1 times [2023-11-25 00:07:19,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:07:19,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968514705] [2023-11-25 00:07:19,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:07:19,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:07:19,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:07:19,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:07:19,458 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:07:19,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968514705] [2023-11-25 00:07:19,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968514705] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:07:19,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127724263] [2023-11-25 00:07:19,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:07:19,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:07:19,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98cbdef7-2e8d-4118-93be-24b623a460e6/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:07:19,460 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98cbdef7-2e8d-4118-93be-24b623a460e6/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:07:19,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98cbdef7-2e8d-4118-93be-24b623a460e6/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-25 00:07:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:07:19,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:07:19,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:07:19,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:07:19,890 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:07:19,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:07:19,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127724263] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:07:19,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [832839156] [2023-11-25 00:07:19,945 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-25 00:07:19,946 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:07:19,949 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:07:19,954 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:07:19,955 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-25 00:07:31,255 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 119 for LOIs [2023-11-25 00:07:31,312 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-25 00:07:33,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [832839156] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:07:33,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-25 00:07:33,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 3, 4] total 14 [2023-11-25 00:07:33,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324850311] [2023-11-25 00:07:33,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:07:33,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-25 00:07:33,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:07:33,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-25 00:07:33,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-25 00:07:33,325 INFO L87 Difference]: Start difference. First operand 548 states and 726 transitions. Second operand has 9 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-25 00:07:38,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-25 00:07:42,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-25 00:07:47,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-25 00:07:48,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:07:48,266 INFO L93 Difference]: Finished difference Result 550 states and 727 transitions. [2023-11-25 00:07:48,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-25 00:07:48,267 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-11-25 00:07:48,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:07:48,271 INFO L225 Difference]: With dead ends: 550 [2023-11-25 00:07:48,271 INFO L226 Difference]: Without dead ends: 548 [2023-11-25 00:07:48,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-25 00:07:48,273 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 6 mSDsluCounter, 1453 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2066 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2023-11-25 00:07:48,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2066 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 14.8s Time] [2023-11-25 00:07:48,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2023-11-25 00:07:48,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 548. [2023-11-25 00:07:48,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 392 states have (on average 1.5892857142857142) internal successors, (623), 491 states have internal predecessors, (623), 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) [2023-11-25 00:07:48,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 725 transitions. [2023-11-25 00:07:48,308 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 725 transitions. Word has length 10 [2023-11-25 00:07:48,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:07:48,308 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 725 transitions. [2023-11-25 00:07:48,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-25 00:07:48,309 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 725 transitions. [2023-11-25 00:07:48,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-25 00:07:48,309 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:07:48,310 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:07:48,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98cbdef7-2e8d-4118-93be-24b623a460e6/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-25 00:07:48,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98cbdef7-2e8d-4118-93be-24b623a460e6/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:07:48,519 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 93 more)] === [2023-11-25 00:07:48,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:07:48,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1449519384, now seen corresponding path program 1 times [2023-11-25 00:07:48,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:07:48,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282524296] [2023-11-25 00:07:48,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:07:48,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:07:48,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:07:48,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:07:48,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:07:48,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282524296] [2023-11-25 00:07:48,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282524296] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:07:48,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608535433] [2023-11-25 00:07:48,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:07:48,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:07:48,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98cbdef7-2e8d-4118-93be-24b623a460e6/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:07:48,759 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98cbdef7-2e8d-4118-93be-24b623a460e6/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:07:48,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98cbdef7-2e8d-4118-93be-24b623a460e6/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-25 00:07:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:07:49,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-25 00:07:49,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:07:49,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-25 00:07:49,219 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:07:49,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608535433] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:07:49,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-25 00:07:49,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-25 00:07:49,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523193593] [2023-11-25 00:07:49,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:07:49,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:07:49,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:07:49,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:07:49,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:07:49,222 INFO L87 Difference]: Start difference. First operand 548 states and 725 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-25 00:07:50,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:07:50,963 INFO L93 Difference]: Finished difference Result 548 states and 725 transitions. [2023-11-25 00:07:50,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:07:50,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-25 00:07:50,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:07:50,968 INFO L225 Difference]: With dead ends: 548 [2023-11-25 00:07:50,969 INFO L226 Difference]: Without dead ends: 547 [2023-11-25 00:07:50,969 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 [2023-11-25 00:07:50,970 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 7 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-25 00:07:50,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1225 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-25 00:07:50,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2023-11-25 00:07:50,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 547. [2023-11-25 00:07:50,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 392 states have (on average 1.586734693877551) internal successors, (622), 490 states have internal predecessors, (622), 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) [2023-11-25 00:07:51,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 724 transitions. [2023-11-25 00:07:51,002 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 724 transitions. Word has length 15 [2023-11-25 00:07:51,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:07:51,003 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 724 transitions. [2023-11-25 00:07:51,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-25 00:07:51,003 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 724 transitions. [2023-11-25 00:07:51,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-25 00:07:51,004 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:07:51,004 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:07:51,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98cbdef7-2e8d-4118-93be-24b623a460e6/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-25 00:07:51,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98cbdef7-2e8d-4118-93be-24b623a460e6/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:07:51,218 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)] === [2023-11-25 00:07:51,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:07:51,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1449459545, now seen corresponding path program 1 times [2023-11-25 00:07:51,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:07:51,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131347118] [2023-11-25 00:07:51,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:07:51,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:07:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:07:51,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:07:51,444 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:07:51,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131347118] [2023-11-25 00:07:51,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131347118] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:07:51,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355212194] [2023-11-25 00:07:51,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:07:51,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:07:51,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98cbdef7-2e8d-4118-93be-24b623a460e6/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:07:51,448 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98cbdef7-2e8d-4118-93be-24b623a460e6/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:07:51,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98cbdef7-2e8d-4118-93be-24b623a460e6/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-25 00:07:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:07:51,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-25 00:07:51,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:07:51,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-25 00:07:51,895 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:07:51,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355212194] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:07:51,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-25 00:07:51,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-25 00:07:51,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603057603] [2023-11-25 00:07:51,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:07:51,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:07:51,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:07:51,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:07:51,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:07:51,902 INFO L87 Difference]: Start difference. First operand 547 states and 724 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)