./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_postdec_08_good.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 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_36ce9e52-0d44-4487-8368-6d7884a2911d/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ce9e52-0d44-4487-8368-6d7884a2911d/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ce9e52-0d44-4487-8368-6d7884a2911d/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ce9e52-0d44-4487-8368-6d7884a2911d/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_postdec_08_good.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ce9e52-0d44-4487-8368-6d7884a2911d/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ce9e52-0d44-4487-8368-6d7884a2911d/bin/utaipan-verify-NcY6lQBIFX --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 dda1dbc018b4bfc76fcbb38c3b9fdc56007312d0375f9717b22212f88b410ef7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:10:39,565 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:10:39,678 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ce9e52-0d44-4487-8368-6d7884a2911d/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-12 00:10:39,685 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:10:39,686 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:10:39,715 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:10:39,716 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:10:39,717 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:10:39,718 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:10:39,719 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:10:39,719 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:10:39,720 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:10:39,721 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:10:39,722 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:10:39,722 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:10:39,723 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:10:39,724 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:10:39,725 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:10:39,725 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:10:39,726 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:10:39,727 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:10:39,728 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:10:39,729 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:10:39,729 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:10:39,730 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:10:39,731 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:10:39,731 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:10:39,732 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:10:39,732 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:10:39,733 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 00:10:39,733 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:10:39,734 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:10:39,734 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:10:39,735 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:10:39,735 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:10:39,735 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:10:39,736 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:10:39,736 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:10:39,737 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:10:39,737 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:10:39,737 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:10:39,738 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:10:39,738 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:10:39,738 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:10:39,739 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_36ce9e52-0d44-4487-8368-6d7884a2911d/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ce9e52-0d44-4487-8368-6d7884a2911d/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dda1dbc018b4bfc76fcbb38c3b9fdc56007312d0375f9717b22212f88b410ef7 [2023-11-12 00:10:40,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:10:40,042 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:10:40,045 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:10:40,047 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:10:40,047 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:10:40,049 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ce9e52-0d44-4487-8368-6d7884a2911d/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_postdec_08_good.i [2023-11-12 00:10:43,360 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:10:43,792 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:10:43,792 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ce9e52-0d44-4487-8368-6d7884a2911d/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_postdec_08_good.i [2023-11-12 00:10:43,824 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ce9e52-0d44-4487-8368-6d7884a2911d/bin/utaipan-verify-NcY6lQBIFX/data/cd46739fa/91bd4df588374ce989f4c9cb5baa7df3/FLAGaec3a48ba [2023-11-12 00:10:43,838 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ce9e52-0d44-4487-8368-6d7884a2911d/bin/utaipan-verify-NcY6lQBIFX/data/cd46739fa/91bd4df588374ce989f4c9cb5baa7df3 [2023-11-12 00:10:43,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:10:43,842 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:10:43,844 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:10:43,844 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:10:43,850 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:10:43,851 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:10:43" (1/1) ... [2023-11-12 00:10:43,853 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d7a73d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:43, skipping insertion in model container [2023-11-12 00:10:43,853 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:10:43" (1/1) ... [2023-11-12 00:10:43,937 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:10:44,357 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 00:10:45,170 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:10:45,193 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:10:45,233 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 00:10:45,348 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:10:45,505 WARN L672 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:10:45,505 WARN L672 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:10:45,505 WARN L672 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:10:45,505 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:10:45,506 WARN L672 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:10:45,515 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:10:45,515 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:45 WrapperNode [2023-11-12 00:10:45,515 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:10:45,517 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:10:45,517 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:10:45,517 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:10:45,526 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:45" (1/1) ... [2023-11-12 00:10:45,566 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:45" (1/1) ... [2023-11-12 00:10:45,601 INFO L138 Inliner]: procedures = 505, calls = 95, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 150 [2023-11-12 00:10:45,601 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:10:45,602 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:10:45,603 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:10:45,603 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:10:45,614 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:45" (1/1) ... [2023-11-12 00:10:45,614 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:45" (1/1) ... [2023-11-12 00:10:45,619 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:45" (1/1) ... [2023-11-12 00:10:45,620 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:45" (1/1) ... [2023-11-12 00:10:45,630 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:45" (1/1) ... [2023-11-12 00:10:45,633 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:45" (1/1) ... [2023-11-12 00:10:45,636 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:45" (1/1) ... [2023-11-12 00:10:45,638 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:45" (1/1) ... [2023-11-12 00:10:45,642 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:10:45,643 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:10:45,644 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:10:45,644 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:10:45,645 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:45" (1/1) ... [2023-11-12 00:10:45,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:10:45,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ce9e52-0d44-4487-8368-6d7884a2911d/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:10:45,693 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ce9e52-0d44-4487-8368-6d7884a2911d/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:10:45,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ce9e52-0d44-4487-8368-6d7884a2911d/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:10:45,744 INFO L130 BoogieDeclarations]: Found specification of procedure printIntLine [2023-11-12 00:10:45,744 INFO L138 BoogieDeclarations]: Found implementation of procedure printIntLine [2023-11-12 00:10:45,744 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-12 00:10:45,747 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-12 00:10:45,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:10:45,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:10:45,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:10:45,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:10:45,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:10:45,749 INFO L130 BoogieDeclarations]: Found specification of procedure staticReturnsTrue [2023-11-12 00:10:45,749 INFO L138 BoogieDeclarations]: Found implementation of procedure staticReturnsTrue [2023-11-12 00:10:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:10:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure staticReturnsFalse [2023-11-12 00:10:45,750 INFO L138 BoogieDeclarations]: Found implementation of procedure staticReturnsFalse [2023-11-12 00:10:45,751 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-12 00:10:45,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:10:45,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:10:45,947 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:10:45,949 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:10:46,309 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:10:46,380 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:10:46,380 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 00:10:46,383 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:10:46 BoogieIcfgContainer [2023-11-12 00:10:46,384 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:10:46,387 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:10:46,387 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:10:46,391 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:10:46,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:10:43" (1/3) ... [2023-11-12 00:10:46,393 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26919daa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:10:46, skipping insertion in model container [2023-11-12 00:10:46,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:45" (2/3) ... [2023-11-12 00:10:46,394 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26919daa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:10:46, skipping insertion in model container [2023-11-12 00:10:46,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:10:46" (3/3) ... [2023-11-12 00:10:46,396 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fscanf_postdec_08_good.i [2023-11-12 00:10:46,415 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:10:46,416 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-12 00:10:46,467 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:10:46,475 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;@49f06ea9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:10:46,475 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-12 00:10:46,480 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 38 states have (on average 1.394736842105263) internal successors, (53), 50 states have internal predecessors, (53), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-12 00:10:46,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-12 00:10:46,489 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:46,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:10:46,491 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-12 00:10:46,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:46,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1201218477, now seen corresponding path program 1 times [2023-11-12 00:10:46,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:46,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841804572] [2023-11-12 00:10:46,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:46,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:46,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:47,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:10:47,104 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:47,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841804572] [2023-11-12 00:10:47,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841804572] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:47,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:47,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:10:47,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921165338] [2023-11-12 00:10:47,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:47,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:10:47,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:47,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:10:47,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:10:47,172 INFO L87 Difference]: Start difference. First operand has 69 states, 38 states have (on average 1.394736842105263) internal successors, (53), 50 states have internal predecessors, (53), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-12 00:10:47,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:47,303 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2023-11-12 00:10:47,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:10:47,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 16 [2023-11-12 00:10:47,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:47,318 INFO L225 Difference]: With dead ends: 69 [2023-11-12 00:10:47,319 INFO L226 Difference]: Without dead ends: 62 [2023-11-12 00:10:47,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:10:47,327 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 2 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:47,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 207 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:10:47,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-11-12 00:10:47,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-11-12 00:10:47,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 45 states have internal predecessors, (47), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-12 00:10:47,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 79 transitions. [2023-11-12 00:10:47,395 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 79 transitions. Word has length 16 [2023-11-12 00:10:47,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:47,397 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 79 transitions. [2023-11-12 00:10:47,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-12 00:10:47,398 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 79 transitions. [2023-11-12 00:10:47,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-12 00:10:47,399 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:47,400 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:10:47,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:10:47,400 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-12 00:10:47,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:47,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1416932946, now seen corresponding path program 1 times [2023-11-12 00:10:47,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:47,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075373908] [2023-11-12 00:10:47,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:47,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:47,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:47,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:10:47,863 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:47,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075373908] [2023-11-12 00:10:47,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075373908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:47,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:47,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 00:10:47,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560118821] [2023-11-12 00:10:47,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:47,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:10:47,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:47,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:10:47,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:10:47,869 INFO L87 Difference]: Start difference. First operand 62 states and 79 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-12 00:10:48,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:48,026 INFO L93 Difference]: Finished difference Result 62 states and 79 transitions. [2023-11-12 00:10:48,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:10:48,027 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 17 [2023-11-12 00:10:48,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:48,029 INFO L225 Difference]: With dead ends: 62 [2023-11-12 00:10:48,029 INFO L226 Difference]: Without dead ends: 61 [2023-11-12 00:10:48,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:10:48,031 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 5 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:48,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 298 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:10:48,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-12 00:10:48,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2023-11-12 00:10:48,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 44 states have internal predecessors, (46), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-12 00:10:48,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 78 transitions. [2023-11-12 00:10:48,047 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 78 transitions. Word has length 17 [2023-11-12 00:10:48,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:48,048 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 78 transitions. [2023-11-12 00:10:48,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-12 00:10:48,048 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 78 transitions. [2023-11-12 00:10:48,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-12 00:10:48,050 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:48,050 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-12 00:10:48,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:10:48,051 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-12 00:10:48,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:48,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1615878331, now seen corresponding path program 1 times [2023-11-12 00:10:48,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:48,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744524845] [2023-11-12 00:10:48,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:48,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:48,218 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 00:10:48,219 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:48,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744524845] [2023-11-12 00:10:48,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744524845] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:48,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:48,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:10:48,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241863319] [2023-11-12 00:10:48,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:48,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:10:48,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:48,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:10:48,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:10:48,235 INFO L87 Difference]: Start difference. First operand 61 states and 78 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-12 00:10:48,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:48,316 INFO L93 Difference]: Finished difference Result 107 states and 133 transitions. [2023-11-12 00:10:48,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:10:48,317 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 29 [2023-11-12 00:10:48,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:48,320 INFO L225 Difference]: With dead ends: 107 [2023-11-12 00:10:48,321 INFO L226 Difference]: Without dead ends: 60 [2023-11-12 00:10:48,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:10:48,330 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 0 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:48,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 187 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:10:48,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-12 00:10:48,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-11-12 00:10:48,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 43 states have internal predecessors, (45), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-12 00:10:48,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 75 transitions. [2023-11-12 00:10:48,345 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 75 transitions. Word has length 29 [2023-11-12 00:10:48,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:48,345 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 75 transitions. [2023-11-12 00:10:48,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-12 00:10:48,346 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 75 transitions. [2023-11-12 00:10:48,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-12 00:10:48,347 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:48,347 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-12 00:10:48,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:10:48,348 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-12 00:10:48,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:48,349 INFO L85 PathProgramCache]: Analyzing trace with hash 697642883, now seen corresponding path program 1 times [2023-11-12 00:10:48,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:48,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175840077] [2023-11-12 00:10:48,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:48,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:48,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:48,498 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 00:10:48,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:48,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175840077] [2023-11-12 00:10:48,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175840077] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:48,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:48,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:10:48,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64858981] [2023-11-12 00:10:48,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:48,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:10:48,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:48,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:10:48,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:10:48,503 INFO L87 Difference]: Start difference. First operand 60 states and 75 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-12 00:10:48,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:48,588 INFO L93 Difference]: Finished difference Result 60 states and 75 transitions. [2023-11-12 00:10:48,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:10:48,589 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 30 [2023-11-12 00:10:48,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:48,591 INFO L225 Difference]: With dead ends: 60 [2023-11-12 00:10:48,591 INFO L226 Difference]: Without dead ends: 59 [2023-11-12 00:10:48,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:10:48,593 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 2 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:48,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 172 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:10:48,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-12 00:10:48,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-11-12 00:10:48,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 42 states have internal predecessors, (44), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-12 00:10:48,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 74 transitions. [2023-11-12 00:10:48,604 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 74 transitions. Word has length 30 [2023-11-12 00:10:48,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:48,605 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 74 transitions. [2023-11-12 00:10:48,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-12 00:10:48,605 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 74 transitions. [2023-11-12 00:10:48,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-12 00:10:48,606 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:48,607 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-12 00:10:48,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 00:10:48,607 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-12 00:10:48,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:48,608 INFO L85 PathProgramCache]: Analyzing trace with hash 152092991, now seen corresponding path program 1 times [2023-11-12 00:10:48,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:48,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948367331] [2023-11-12 00:10:48,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:48,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:48,960 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 00:10:48,960 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:48,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948367331] [2023-11-12 00:10:48,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948367331] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:10:48,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396738938] [2023-11-12 00:10:48,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:48,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:10:48,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ce9e52-0d44-4487-8368-6d7884a2911d/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:10:48,968 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ce9e52-0d44-4487-8368-6d7884a2911d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:10:48,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ce9e52-0d44-4487-8368-6d7884a2911d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:10:49,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:49,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 00:10:49,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:10:49,223 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-12 00:10:49,289 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-12 00:10:49,294 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 00:10:49,294 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:10:49,499 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-12 00:10:49,500 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2023-11-12 00:10:49,563 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 00:10:49,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396738938] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:10:49,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [931032086] [2023-11-12 00:10:49,585 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2023-11-12 00:10:49,586 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:10:49,590 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:10:49,595 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:10:49,596 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:10:52,995 INFO L197 IcfgInterpreter]: Interpreting procedure staticReturnsTrue with input of size 24 for LOIs [2023-11-12 00:10:53,034 INFO L197 IcfgInterpreter]: Interpreting procedure staticReturnsFalse with input of size 123 for LOIs [2023-11-12 00:10:53,088 INFO L197 IcfgInterpreter]: Interpreting procedure printLine with input of size 166 for LOIs [2023-11-12 00:10:53,239 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:11:30,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [931032086] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:11:30,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:11:30,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [6, 6, 5] total 31 [2023-11-12 00:11:30,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823466238] [2023-11-12 00:11:30,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:11:30,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-12 00:11:30,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:11:30,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-12 00:11:30,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=826, Unknown=9, NotChecked=0, Total=992 [2023-11-12 00:11:30,439 INFO L87 Difference]: Start difference. First operand 59 states and 74 transitions. Second operand has 21 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 15 states have internal predecessors, (16), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-12 00:11:36,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 00:11:39,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 00:11:41,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 00:11:44,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]