./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_square_15_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_square_15_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4d781dd7e1799455c731ceff1510bbd253f2e69e537692c29035a826a8ed3012 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:43:27,213 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:43:27,306 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-26 10:43:27,311 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:43:27,312 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:43:27,342 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:43:27,343 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:43:27,344 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:43:27,344 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:43:27,345 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:43:27,346 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:43:27,346 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:43:27,347 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:43:27,348 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:43:27,348 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:43:27,349 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:43:27,349 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:43:27,350 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:43:27,351 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:43:27,351 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:43:27,352 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:43:27,353 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:43:27,353 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 10:43:27,354 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:43:27,355 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:43:27,355 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:43:27,356 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:43:27,356 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:43:27,357 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:43:27,357 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:43:27,358 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:43:27,358 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:43:27,359 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:43:27,359 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:43:27,360 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:43:27,360 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:43:27,361 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:43:27,361 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:43:27,362 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:43:27,362 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:43:27,363 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:43:27,363 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d781dd7e1799455c731ceff1510bbd253f2e69e537692c29035a826a8ed3012 [2023-11-26 10:43:27,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:43:27,725 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:43:27,728 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:43:27,731 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:43:27,731 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:43:27,733 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_square_15_bad.i [2023-11-26 10:43:30,965 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:43:31,455 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:43:31,457 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_square_15_bad.i [2023-11-26 10:43:31,492 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/data/0c4c14505/4d4f774ed3144c0dbe125c9ae62707e7/FLAG5d9338929 [2023-11-26 10:43:31,514 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/data/0c4c14505/4d4f774ed3144c0dbe125c9ae62707e7 [2023-11-26 10:43:31,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:43:31,523 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:43:31,525 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:43:31,525 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:43:31,531 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:43:31,532 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:43:31" (1/1) ... [2023-11-26 10:43:31,533 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74a14a1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:31, skipping insertion in model container [2023-11-26 10:43:31,533 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:43:31" (1/1) ... [2023-11-26 10:43:31,631 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:43:33,836 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:43:33,852 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:43:33,980 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:43:34,519 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:43:34,521 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:43:34,521 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:43:34,521 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:43:34,521 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:43:34,530 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:43:34,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:34 WrapperNode [2023-11-26 10:43:34,531 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:43:34,532 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:43:34,532 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:43:34,533 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:43:34,541 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:34" (1/1) ... [2023-11-26 10:43:34,605 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:34" (1/1) ... [2023-11-26 10:43:34,662 INFO L138 Inliner]: procedures = 937, calls = 67, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 81 [2023-11-26 10:43:34,662 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:43:34,663 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:43:34,663 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:43:34,664 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:43:34,675 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:34" (1/1) ... [2023-11-26 10:43:34,676 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:34" (1/1) ... [2023-11-26 10:43:34,697 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:34" (1/1) ... [2023-11-26 10:43:34,713 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [1, 1, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [1, 1, 0]. The 2 writes are split as follows [0, 0, 2]. [2023-11-26 10:43:34,727 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:34" (1/1) ... [2023-11-26 10:43:34,727 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:34" (1/1) ... [2023-11-26 10:43:34,740 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:34" (1/1) ... [2023-11-26 10:43:34,742 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:34" (1/1) ... [2023-11-26 10:43:34,749 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:34" (1/1) ... [2023-11-26 10:43:34,751 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:34" (1/1) ... [2023-11-26 10:43:34,755 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:43:34,756 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:43:34,756 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:43:34,756 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:43:34,757 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:34" (1/1) ... [2023-11-26 10:43:34,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:43:34,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:34,791 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:34,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:43:34,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:43:34,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:43:34,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:43:34,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:43:34,843 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-26 10:43:34,843 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-26 10:43:34,843 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-26 10:43:34,845 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-26 10:43:34,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:43:34,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2023-11-26 10:43:34,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2023-11-26 10:43:34,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2023-11-26 10:43:34,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:43:34,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:43:34,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 10:43:35,033 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:43:35,038 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:43:35,197 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:43:35,232 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:43:35,232 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 10:43:35,233 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:43:35 BoogieIcfgContainer [2023-11-26 10:43:35,233 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:43:35,236 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:43:35,236 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:43:35,240 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:43:35,240 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:43:31" (1/3) ... [2023-11-26 10:43:35,241 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@651d33c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:43:35, skipping insertion in model container [2023-11-26 10:43:35,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:34" (2/3) ... [2023-11-26 10:43:35,241 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@651d33c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:43:35, skipping insertion in model container [2023-11-26 10:43:35,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:43:35" (3/3) ... [2023-11-26 10:43:35,243 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE190_Integer_Overflow__int_fgets_square_15_bad.i [2023-11-26 10:43:35,264 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:43:35,264 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-26 10:43:35,321 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:43:35,329 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2b5d5db1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:43:35,329 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-26 10:43:35,334 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 21 states have internal predecessors, (27), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-26 10:43:35,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-26 10:43:35,343 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:35,343 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:35,344 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-26 10:43:35,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:35,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1219305182, now seen corresponding path program 1 times [2023-11-26 10:43:35,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:35,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610571668] [2023-11-26 10:43:35,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:35,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:35,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:35,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:43:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:35,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:35,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:35,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610571668] [2023-11-26 10:43:35,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610571668] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:35,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:35,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 10:43:35,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413327087] [2023-11-26 10:43:35,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:35,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 10:43:35,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:35,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:43:35,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:43:35,669 INFO L87 Difference]: Start difference. First operand has 28 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 21 states have internal predecessors, (27), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 1 states have (on average 10.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:43:35,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:35,715 INFO L93 Difference]: Finished difference Result 28 states and 37 transitions. [2023-11-26 10:43:35,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:43:35,721 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 10.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-26 10:43:35,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:35,740 INFO L225 Difference]: With dead ends: 28 [2023-11-26 10:43:35,741 INFO L226 Difference]: Without dead ends: 20 [2023-11-26 10:43:35,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:43:35,748 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:35,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:43:35,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-11-26 10:43:35,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-11-26 10:43:35,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:43:35,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2023-11-26 10:43:35,807 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 12 [2023-11-26 10:43:35,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:35,809 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2023-11-26 10:43:35,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 10.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:43:35,809 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2023-11-26 10:43:35,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-26 10:43:35,812 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:35,814 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:35,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:43:35,815 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-26 10:43:35,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:35,819 INFO L85 PathProgramCache]: Analyzing trace with hash 856245094, now seen corresponding path program 1 times [2023-11-26 10:43:35,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:35,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769413406] [2023-11-26 10:43:35,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:35,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:35,878 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:43:35,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1471884028] [2023-11-26 10:43:35,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:35,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:35,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:35,891 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:35,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:43:36,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:36,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 10:43:36,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:36,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:36,045 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:36,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:36,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769413406] [2023-11-26 10:43:36,046 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:43:36,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471884028] [2023-11-26 10:43:36,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471884028] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:36,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:36,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:43:36,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955926497] [2023-11-26 10:43:36,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:36,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:43:36,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:36,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:43:36,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:43:36,051 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:43:36,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:36,087 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2023-11-26 10:43:36,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:43:36,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-11-26 10:43:36,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:36,090 INFO L225 Difference]: With dead ends: 29 [2023-11-26 10:43:36,091 INFO L226 Difference]: Without dead ends: 17 [2023-11-26 10:43:36,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:43:36,111 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 5 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:36,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 27 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:43:36,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-11-26 10:43:36,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-11-26 10:43:36,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 10:43:36,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2023-11-26 10:43:36,121 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2023-11-26 10:43:36,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:36,123 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2023-11-26 10:43:36,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:43:36,124 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2023-11-26 10:43:36,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-26 10:43:36,124 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:36,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:36,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:36,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:36,332 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-26 10:43:36,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:36,333 INFO L85 PathProgramCache]: Analyzing trace with hash -838499042, now seen corresponding path program 1 times [2023-11-26 10:43:36,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:36,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930806766] [2023-11-26 10:43:36,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:36,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:36,399 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:43:36,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1233704674] [2023-11-26 10:43:36,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:36,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:36,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:36,401 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:36,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:43:36,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:36,534 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:43:36,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:36,584 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:43:36,585 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 10:43:36,586 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-26 10:43:36,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-26 10:43:36,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:36,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:36,799 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-26 10:43:36,803 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 10:43:36,824 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet190 [2023-11-26 10:43:36,827 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch182 could not be translated [2023-11-26 10:43:36,828 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch182 could not be translated [2023-11-26 10:43:36,829 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch187 could not be translated [2023-11-26 10:43:36,830 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch187 could not be translated [2023-11-26 10:43:36,839 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 10:43:36 BoogieIcfgContainer [2023-11-26 10:43:36,839 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 10:43:36,840 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 10:43:36,840 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 10:43:36,841 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 10:43:36,841 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:43:35" (3/4) ... [2023-11-26 10:43:36,844 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-26 10:43:36,845 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 10:43:36,846 INFO L158 Benchmark]: Toolchain (without parser) took 5322.78ms. Allocated memory was 134.2MB in the beginning and 211.8MB in the end (delta: 77.6MB). Free memory was 83.3MB in the beginning and 64.3MB in the end (delta: 19.0MB). Peak memory consumption was 96.6MB. Max. memory is 16.1GB. [2023-11-26 10:43:36,847 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 134.2MB. Free memory is still 104.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:43:36,848 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3006.14ms. Allocated memory was 134.2MB in the beginning and 211.8MB in the end (delta: 77.6MB). Free memory was 83.3MB in the beginning and 139.8MB in the end (delta: -56.5MB). Peak memory consumption was 71.8MB. Max. memory is 16.1GB. [2023-11-26 10:43:36,848 INFO L158 Benchmark]: Boogie Procedure Inliner took 130.47ms. Allocated memory is still 211.8MB. Free memory was 139.8MB in the beginning and 135.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 10:43:36,849 INFO L158 Benchmark]: Boogie Preprocessor took 91.97ms. Allocated memory is still 211.8MB. Free memory was 135.6MB in the beginning and 133.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:43:36,850 INFO L158 Benchmark]: RCFGBuilder took 477.53ms. Allocated memory is still 211.8MB. Free memory was 133.5MB in the beginning and 115.7MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-26 10:43:36,850 INFO L158 Benchmark]: TraceAbstraction took 1603.31ms. Allocated memory is still 211.8MB. Free memory was 114.6MB in the beginning and 64.3MB in the end (delta: 50.3MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2023-11-26 10:43:36,851 INFO L158 Benchmark]: Witness Printer took 5.30ms. Allocated memory is still 211.8MB. Free memory is still 64.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:43:36,854 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 134.2MB. Free memory is still 104.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3006.14ms. Allocated memory was 134.2MB in the beginning and 211.8MB in the end (delta: 77.6MB). Free memory was 83.3MB in the beginning and 139.8MB in the end (delta: -56.5MB). Peak memory consumption was 71.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 130.47ms. Allocated memory is still 211.8MB. Free memory was 139.8MB in the beginning and 135.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 91.97ms. Allocated memory is still 211.8MB. Free memory was 135.6MB in the beginning and 133.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 477.53ms. Allocated memory is still 211.8MB. Free memory was 133.5MB in the beginning and 115.7MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1603.31ms. Allocated memory is still 211.8MB. Free memory was 114.6MB in the beginning and 64.3MB in the end (delta: 50.3MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * Witness Printer took 5.30ms. Allocated memory is still 211.8MB. Free memory is still 64.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~nondet190 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch182 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch182 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch187 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch187 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1859]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1843, overapproximation of large string literal at line 1871. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1871] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={6:0}] [L1414] COND TRUE line != ((void *)0) [L1871] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=13, argc=13, argv={30:31}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1872] CALL CWE190_Integer_Overflow__int_fgets_square_15_bad() [L1834] int data; [L1835] data = 0 [L1838] case 6: VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1838] case 6: [L1840] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1840] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1840] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1838] case 6: [L1843] EXPR data = atoi(inputBuffer) [L1840] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1839-L1849] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=2147483647, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1857] case 7: VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=2147483647, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1859] data * data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=2147483647, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1859]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 28 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 59 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8 IncrementalHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 49 mSDtfsCounter, 8 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 23 SizeOfPredicates, 0 NumberOfNonLiveVariables, 92 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-26 10:43:36,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_square_15_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4d781dd7e1799455c731ceff1510bbd253f2e69e537692c29035a826a8ed3012 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:43:39,694 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:43:39,834 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2023-11-26 10:43:39,843 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:43:39,844 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:43:39,845 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-11-26 10:43:39,889 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:43:39,890 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:43:39,891 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:43:39,896 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:43:39,897 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:43:39,897 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:43:39,897 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:43:39,899 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:43:39,900 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:43:39,900 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:43:39,901 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:43:39,902 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:43:39,902 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:43:39,903 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:43:39,904 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:43:39,904 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:43:39,904 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 10:43:39,905 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-26 10:43:39,905 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 10:43:39,906 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-26 10:43:39,906 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:43:39,906 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:43:39,907 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:43:39,907 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:43:39,909 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:43:39,909 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:43:39,909 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:43:39,909 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:43:39,910 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:43:39,910 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:43:39,911 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:43:39,911 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-26 10:43:39,911 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-26 10:43:39,912 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:43:39,912 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:43:39,912 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:43:39,912 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:43:39,913 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:43:39,913 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-26 10:43:39,913 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d781dd7e1799455c731ceff1510bbd253f2e69e537692c29035a826a8ed3012 [2023-11-26 10:43:40,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:43:40,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:43:40,416 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:43:40,417 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:43:40,418 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:43:40,420 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_square_15_bad.i [2023-11-26 10:43:43,796 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:43:44,324 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:43:44,325 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_square_15_bad.i [2023-11-26 10:43:44,360 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/data/296967fc7/299d115a95d34cdc935c3a23b4088bbe/FLAGe40e4122e [2023-11-26 10:43:44,375 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/data/296967fc7/299d115a95d34cdc935c3a23b4088bbe [2023-11-26 10:43:44,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:43:44,383 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:43:44,386 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:43:44,386 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:43:44,391 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:43:44,392 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:43:44" (1/1) ... [2023-11-26 10:43:44,393 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ff85e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:44, skipping insertion in model container [2023-11-26 10:43:44,394 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:43:44" (1/1) ... [2023-11-26 10:43:44,540 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:43:46,320 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:43:46,336 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:43:46,468 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:43:46,993 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:43:46,994 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:43:46,994 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:43:46,994 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:43:46,995 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:43:47,003 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:43:47,004 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:47 WrapperNode [2023-11-26 10:43:47,004 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:43:47,005 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:43:47,006 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:43:47,006 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:43:47,012 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:47" (1/1) ... [2023-11-26 10:43:47,061 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:47" (1/1) ... [2023-11-26 10:43:47,095 INFO L138 Inliner]: procedures = 942, calls = 67, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2023-11-26 10:43:47,095 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:43:47,096 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:43:47,096 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:43:47,096 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:43:47,107 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:47" (1/1) ... [2023-11-26 10:43:47,107 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:47" (1/1) ... [2023-11-26 10:43:47,117 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:47" (1/1) ... [2023-11-26 10:43:47,140 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [1, 1, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [1, 1, 0]. The 2 writes are split as follows [0, 0, 2]. [2023-11-26 10:43:47,141 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:47" (1/1) ... [2023-11-26 10:43:47,141 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:47" (1/1) ... [2023-11-26 10:43:47,156 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:47" (1/1) ... [2023-11-26 10:43:47,160 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:47" (1/1) ... [2023-11-26 10:43:47,166 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:47" (1/1) ... [2023-11-26 10:43:47,168 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:47" (1/1) ... [2023-11-26 10:43:47,174 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:43:47,188 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:43:47,188 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:43:47,188 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:43:47,189 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:47" (1/1) ... [2023-11-26 10:43:47,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:43:47,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:47,225 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:47,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:43:47,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:43:47,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:43:47,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:43:47,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:43:47,263 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-26 10:43:47,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#0 [2023-11-26 10:43:47,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#1 [2023-11-26 10:43:47,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#2 [2023-11-26 10:43:47,264 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-26 10:43:47,264 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-26 10:43:47,264 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-26 10:43:47,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:43:47,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-26 10:43:47,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-26 10:43:47,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-26 10:43:47,457 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:43:47,459 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:43:50,148 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:43:50,186 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:43:50,186 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 10:43:50,186 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:43:50 BoogieIcfgContainer [2023-11-26 10:43:50,187 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:43:50,189 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:43:50,189 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:43:50,192 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:43:50,193 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:43:44" (1/3) ... [2023-11-26 10:43:50,193 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d194cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:43:50, skipping insertion in model container [2023-11-26 10:43:50,193 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:47" (2/3) ... [2023-11-26 10:43:50,194 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d194cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:43:50, skipping insertion in model container [2023-11-26 10:43:50,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:43:50" (3/3) ... [2023-11-26 10:43:50,195 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE190_Integer_Overflow__int_fgets_square_15_bad.i [2023-11-26 10:43:50,218 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:43:50,218 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-26 10:43:50,258 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:43:50,264 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1c8f8d7d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:43:50,265 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-26 10:43:50,269 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 21 states have internal predecessors, (27), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-26 10:43:50,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-26 10:43:50,277 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:50,277 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:50,278 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-26 10:43:50,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:50,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1219305182, now seen corresponding path program 1 times [2023-11-26 10:43:50,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:43:50,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1570985062] [2023-11-26 10:43:50,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:50,302 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:50,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:43:50,308 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 10:43:50,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-26 10:43:50,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:50,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 10:43:50,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:50,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:50,484 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:50,484 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:43:50,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1570985062] [2023-11-26 10:43:50,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1570985062] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:50,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:50,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:43:50,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281807840] [2023-11-26 10:43:50,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:50,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:43:50,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:43:50,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:43:50,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:43:50,521 INFO L87 Difference]: Start difference. First operand has 28 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 21 states have internal predecessors, (27), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:43:51,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:51,391 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2023-11-26 10:43:51,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:43:51,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-26 10:43:51,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:51,399 INFO L225 Difference]: With dead ends: 45 [2023-11-26 10:43:51,399 INFO L226 Difference]: Without dead ends: 18 [2023-11-26 10:43:51,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:43:51,405 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 5 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:51,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 45 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-26 10:43:51,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-26 10:43:51,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-11-26 10:43:51,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 10:43:51,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2023-11-26 10:43:51,447 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2023-11-26 10:43:51,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:51,448 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2023-11-26 10:43:51,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:43:51,449 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2023-11-26 10:43:51,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-26 10:43:51,450 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:51,450 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:51,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:51,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:51,652 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-26 10:43:51,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:51,653 INFO L85 PathProgramCache]: Analyzing trace with hash 527140970, now seen corresponding path program 1 times [2023-11-26 10:43:51,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:43:51,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [38193843] [2023-11-26 10:43:51,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:51,654 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:51,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:43:51,657 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 10:43:51,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963b9f79-a9fc-4b1b-87b3-782e77007631/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process