./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fscanf_preinc_11_good.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 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_dade515e-5153-4815-b271-d798935feecc/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dade515e-5153-4815-b271-d798935feecc/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_dade515e-5153-4815-b271-d798935feecc/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dade515e-5153-4815-b271-d798935feecc/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fscanf_preinc_11_good.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dade515e-5153-4815-b271-d798935feecc/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_dade515e-5153-4815-b271-d798935feecc/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 88152d200f3735580ff1ef27f101a7fb92c16771960b094da1023d228a179c4c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:50:19,271 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:50:19,396 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dade515e-5153-4815-b271-d798935feecc/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-12 00:50:19,403 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:50:19,404 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:50:19,443 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:50:19,444 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:50:19,444 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:50:19,445 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:50:19,450 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:50:19,451 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:50:19,451 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:50:19,452 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:50:19,454 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:50:19,454 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:50:19,454 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:50:19,455 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:50:19,455 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:50:19,456 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:50:19,456 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:50:19,457 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:50:19,457 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:50:19,458 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:50:19,459 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:50:19,459 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:50:19,460 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:50:19,460 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:50:19,460 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:50:19,461 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:50:19,461 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 00:50:19,462 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:50:19,463 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:50:19,463 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:50:19,463 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:50:19,464 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:50:19,464 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:50:19,464 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:50:19,464 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:50:19,465 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:50:19,465 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:50:19,465 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:50:19,466 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:50:19,466 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:50:19,466 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:50:19,467 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_dade515e-5153-4815-b271-d798935feecc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dade515e-5153-4815-b271-d798935feecc/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 88152d200f3735580ff1ef27f101a7fb92c16771960b094da1023d228a179c4c [2023-11-12 00:50:19,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:50:19,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:50:19,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:50:19,838 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:50:19,838 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:50:19,840 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dade515e-5153-4815-b271-d798935feecc/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fscanf_preinc_11_good.i [2023-11-12 00:50:23,103 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:50:23,534 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:50:23,535 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dade515e-5153-4815-b271-d798935feecc/sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fscanf_preinc_11_good.i [2023-11-12 00:50:23,572 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dade515e-5153-4815-b271-d798935feecc/bin/utaipan-verify-NcY6lQBIFX/data/a8cceb658/06be0c68f6914df28a0accb7a22be886/FLAGc17d463ca [2023-11-12 00:50:23,687 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dade515e-5153-4815-b271-d798935feecc/bin/utaipan-verify-NcY6lQBIFX/data/a8cceb658/06be0c68f6914df28a0accb7a22be886 [2023-11-12 00:50:23,694 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:50:23,697 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:50:23,701 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:50:23,701 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:50:23,708 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:50:23,709 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:50:23" (1/1) ... [2023-11-12 00:50:23,710 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40010cce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:23, skipping insertion in model container [2023-11-12 00:50:23,710 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:50:23" (1/1) ... [2023-11-12 00:50:23,779 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:50:24,179 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 00:50:24,846 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:50:24,867 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:50:24,907 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 00:50:25,005 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:50:25,180 WARN L672 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:50:25,181 WARN L672 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:50:25,181 WARN L672 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:50:25,181 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:50:25,181 WARN L672 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:50:25,188 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:50:25,188 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:25 WrapperNode [2023-11-12 00:50:25,188 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:50:25,189 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:50:25,189 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:50:25,189 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:50:25,195 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:25" (1/1) ... [2023-11-12 00:50:25,226 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:25" (1/1) ... [2023-11-12 00:50:25,265 INFO L138 Inliner]: procedures = 503, calls = 95, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 150 [2023-11-12 00:50:25,266 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:50:25,267 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:50:25,267 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:50:25,267 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:50:25,277 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:25" (1/1) ... [2023-11-12 00:50:25,277 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:25" (1/1) ... [2023-11-12 00:50:25,282 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:25" (1/1) ... [2023-11-12 00:50:25,283 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:25" (1/1) ... [2023-11-12 00:50:25,290 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:25" (1/1) ... [2023-11-12 00:50:25,292 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:25" (1/1) ... [2023-11-12 00:50:25,295 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:25" (1/1) ... [2023-11-12 00:50:25,297 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:25" (1/1) ... [2023-11-12 00:50:25,301 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:50:25,302 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:50:25,302 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:50:25,302 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:50:25,303 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:25" (1/1) ... [2023-11-12 00:50:25,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:50:25,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dade515e-5153-4815-b271-d798935feecc/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:50:25,338 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dade515e-5153-4815-b271-d798935feecc/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:50:25,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dade515e-5153-4815-b271-d798935feecc/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:50:25,406 INFO L130 BoogieDeclarations]: Found specification of procedure printIntLine [2023-11-12 00:50:25,406 INFO L138 BoogieDeclarations]: Found implementation of procedure printIntLine [2023-11-12 00:50:25,406 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-12 00:50:25,407 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-12 00:50:25,407 INFO L130 BoogieDeclarations]: Found specification of procedure globalReturnsTrue [2023-11-12 00:50:25,407 INFO L138 BoogieDeclarations]: Found implementation of procedure globalReturnsTrue [2023-11-12 00:50:25,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:50:25,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:50:25,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:50:25,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:50:25,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:50:25,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:50:25,408 INFO L130 BoogieDeclarations]: Found specification of procedure globalReturnsFalse [2023-11-12 00:50:25,408 INFO L138 BoogieDeclarations]: Found implementation of procedure globalReturnsFalse [2023-11-12 00:50:25,409 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-12 00:50:25,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:50:25,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:50:25,567 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:50:25,569 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:50:25,952 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:50:26,028 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:50:26,028 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 00:50:26,031 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:50:26 BoogieIcfgContainer [2023-11-12 00:50:26,031 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:50:26,033 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:50:26,033 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:50:26,036 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:50:26,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:50:23" (1/3) ... [2023-11-12 00:50:26,037 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41ed588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:50:26, skipping insertion in model container [2023-11-12 00:50:26,038 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:25" (2/3) ... [2023-11-12 00:50:26,038 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41ed588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:50:26, skipping insertion in model container [2023-11-12 00:50:26,038 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:50:26" (3/3) ... [2023-11-12 00:50:26,039 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE190_Integer_Overflow__int_fscanf_preinc_11_good.i [2023-11-12 00:50:26,059 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:50:26,060 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-12 00:50:26,110 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:50:26,117 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;@9b9be17, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:50:26,117 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-12 00:50:26,123 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 00:50:26,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-12 00:50:26,132 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:50:26,133 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:50:26,134 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 00:50:26,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:50:26,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1021116463, now seen corresponding path program 1 times [2023-11-12 00:50:26,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:50:26,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956606404] [2023-11-12 00:50:26,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:50:26,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:50:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:50:26,932 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 00:50:26,933 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:50:26,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956606404] [2023-11-12 00:50:26,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956606404] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:50:26,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:50:26,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 00:50:26,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333463512] [2023-11-12 00:50:26,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:50:26,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:50:26,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:50:26,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:50:26,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:50:26,975 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 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 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 00:50:27,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:50:27,152 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2023-11-12 00:50:27,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:50:27,155 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 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 16 [2023-11-12 00:50:27,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:50:27,165 INFO L225 Difference]: With dead ends: 69 [2023-11-12 00:50:27,165 INFO L226 Difference]: Without dead ends: 62 [2023-11-12 00:50:27,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:50:27,172 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 8 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:50:27,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 386 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:50:27,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-11-12 00:50:27,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-11-12 00:50:27,216 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 00:50:27,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 79 transitions. [2023-11-12 00:50:27,220 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 79 transitions. Word has length 16 [2023-11-12 00:50:27,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:50:27,222 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 79 transitions. [2023-11-12 00:50:27,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 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 00:50:27,222 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 79 transitions. [2023-11-12 00:50:27,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-12 00:50:27,224 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:50:27,224 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 00:50:27,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:50:27,225 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 00:50:27,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:50:27,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1589839212, now seen corresponding path program 1 times [2023-11-12 00:50:27,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:50:27,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57815620] [2023-11-12 00:50:27,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:50:27,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:50:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:50:27,333 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 00:50:27,333 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:50:27,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57815620] [2023-11-12 00:50:27,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57815620] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:50:27,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:50:27,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:50:27,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023569770] [2023-11-12 00:50:27,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:50:27,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:50:27,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:50:27,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:50:27,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:50:27,344 INFO L87 Difference]: Start difference. First operand 62 states and 79 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 00:50:27,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:50:27,420 INFO L93 Difference]: Finished difference Result 62 states and 79 transitions. [2023-11-12 00:50:27,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:50:27,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 17 [2023-11-12 00:50:27,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:50:27,423 INFO L225 Difference]: With dead ends: 62 [2023-11-12 00:50:27,424 INFO L226 Difference]: Without dead ends: 61 [2023-11-12 00:50:27,428 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 00:50:27,430 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:50:27,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 186 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:50:27,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-12 00:50:27,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2023-11-12 00:50:27,450 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 00:50:27,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 78 transitions. [2023-11-12 00:50:27,451 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 78 transitions. Word has length 17 [2023-11-12 00:50:27,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:50:27,452 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 78 transitions. [2023-11-12 00:50:27,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 00:50:27,452 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 78 transitions. [2023-11-12 00:50:27,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-12 00:50:27,453 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:50:27,454 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 00:50:27,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:50:27,454 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 00:50:27,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:50:27,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1856388304, now seen corresponding path program 1 times [2023-11-12 00:50:27,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:50:27,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448115900] [2023-11-12 00:50:27,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:50:27,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:50:27,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:50:27,550 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 00:50:27,550 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:50:27,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448115900] [2023-11-12 00:50:27,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448115900] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:50:27,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:50:27,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:50:27,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771096493] [2023-11-12 00:50:27,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:50:27,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:50:27,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:50:27,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:50:27,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:50:27,554 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 00:50:27,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:50:27,622 INFO L93 Difference]: Finished difference Result 107 states and 133 transitions. [2023-11-12 00:50:27,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:50:27,623 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 00:50:27,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:50:27,627 INFO L225 Difference]: With dead ends: 107 [2023-11-12 00:50:27,627 INFO L226 Difference]: Without dead ends: 60 [2023-11-12 00:50:27,628 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 00:50:27,635 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 00:50:27,636 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 00:50:27,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-12 00:50:27,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-11-12 00:50:27,644 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 00:50:27,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 75 transitions. [2023-11-12 00:50:27,649 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 75 transitions. Word has length 29 [2023-11-12 00:50:27,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:50:27,649 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 75 transitions. [2023-11-12 00:50:27,650 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 00:50:27,650 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 75 transitions. [2023-11-12 00:50:27,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-12 00:50:27,652 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:50:27,652 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 00:50:27,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:50:27,653 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 00:50:27,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:50:27,653 INFO L85 PathProgramCache]: Analyzing trace with hash 570589482, now seen corresponding path program 1 times [2023-11-12 00:50:27,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:50:27,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544004838] [2023-11-12 00:50:27,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:50:27,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:50:27,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:50:28,057 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 00:50:28,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:50:28,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544004838] [2023-11-12 00:50:28,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544004838] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:50:28,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156070047] [2023-11-12 00:50:28,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:50:28,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:50:28,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dade515e-5153-4815-b271-d798935feecc/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:50:28,066 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dade515e-5153-4815-b271-d798935feecc/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:50:28,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dade515e-5153-4815-b271-d798935feecc/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:50:28,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:50:28,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 00:50:28,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:50:28,356 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 00:50:28,421 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 17 treesize of output 9 [2023-11-12 00:50:28,424 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 00:50:28,424 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:50:28,604 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-12 00:50:28,605 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 00:50:28,659 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 00:50:28,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156070047] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:50:28,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1251122671] [2023-11-12 00:50:28,684 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-11-12 00:50:28,684 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:50:28,689 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:50:28,696 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:50:28,696 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:50:31,849 INFO L197 IcfgInterpreter]: Interpreting procedure globalReturnsTrue with input of size 24 for LOIs [2023-11-12 00:50:31,855 INFO L197 IcfgInterpreter]: Interpreting procedure globalReturnsFalse with input of size 123 for LOIs [2023-11-12 00:50:31,890 INFO L197 IcfgInterpreter]: Interpreting procedure printLine with input of size 164 for LOIs [2023-11-12 00:50:32,003 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:51:07,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1251122671] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:51:07,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:51:07,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [6, 6, 5] total 31 [2023-11-12 00:51:07,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829659434] [2023-11-12 00:51:07,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:51:07,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-12 00:51:07,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:51:07,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-12 00:51:07,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=824, Unknown=11, NotChecked=0, Total=992 [2023-11-12 00:51:07,944 INFO L87 Difference]: Start difference. First operand 60 states and 75 transitions. Second operand has 21 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 15 states have internal predecessors, (15), 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 00:51:13,201 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 00:51:16,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 00:51:19,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 00:51:21,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 00:51:23,582 WARN L539 Checker$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 00:51:25,784 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]