./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/uname-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_850c87a3-d930-471a-a7b4-b24158a912e9/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850c87a3-d930-471a-a7b4-b24158a912e9/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850c87a3-d930-471a-a7b4-b24158a912e9/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850c87a3-d930-471a-a7b4-b24158a912e9/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/uname-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850c87a3-d930-471a-a7b4-b24158a912e9/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850c87a3-d930-471a-a7b4-b24158a912e9/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 64052bfdc5bf6f2a2ba50127e6f4ecf4f822ad11dffb4513d5356b1e12bd4cd0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:13:16,339 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:13:16,508 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850c87a3-d930-471a-a7b4-b24158a912e9/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-19 05:13:16,521 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:13:16,521 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:13:16,582 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:13:16,583 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:13:16,584 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:13:16,585 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:13:16,594 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:13:16,594 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:13:16,596 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:13:16,597 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:13:16,599 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:13:16,600 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:13:16,600 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:13:16,601 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:13:16,602 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:13:16,602 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:13:16,603 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:13:16,603 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:13:16,604 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:13:16,605 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:13:16,606 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:13:16,607 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:13:16,607 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:13:16,608 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:13:16,608 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:13:16,609 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:13:16,609 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:13:16,611 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:13:16,612 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:13:16,612 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:13:16,612 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:13:16,613 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:13:16,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:13:16,613 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:13:16,614 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:13:16,614 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:13:16,614 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:13:16,614 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:13:16,615 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:13:16,615 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:13:16,616 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:13:16,616 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850c87a3-d930-471a-a7b4-b24158a912e9/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850c87a3-d930-471a-a7b4-b24158a912e9/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64052bfdc5bf6f2a2ba50127e6f4ecf4f822ad11dffb4513d5356b1e12bd4cd0 [2023-11-19 05:13:17,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:13:17,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:13:17,062 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:13:17,064 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:13:17,065 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:13:17,066 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850c87a3-d930-471a-a7b4-b24158a912e9/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/busybox-1.22.0/uname-2.i [2023-11-19 05:13:20,597 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:13:21,268 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:13:21,269 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850c87a3-d930-471a-a7b4-b24158a912e9/sv-benchmarks/c/busybox-1.22.0/uname-2.i [2023-11-19 05:13:21,306 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850c87a3-d930-471a-a7b4-b24158a912e9/bin/utaipan-verify-t7M7D8N6sZ/data/a32b74adb/bcd671c99a2a48aebcaa27a9cc8c95e6/FLAG4767d8178 [2023-11-19 05:13:21,324 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850c87a3-d930-471a-a7b4-b24158a912e9/bin/utaipan-verify-t7M7D8N6sZ/data/a32b74adb/bcd671c99a2a48aebcaa27a9cc8c95e6 [2023-11-19 05:13:21,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:13:21,329 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:13:21,331 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:13:21,332 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:13:21,338 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:13:21,338 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:13:21" (1/1) ... [2023-11-19 05:13:21,340 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65d65d4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:21, skipping insertion in model container [2023-11-19 05:13:21,340 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:13:21" (1/1) ... [2023-11-19 05:13:21,463 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:13:23,261 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:13:23,338 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:13:23,621 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:13:23,868 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:13:23,869 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:13:23,869 WARN L675 CHandler]: The function putchar is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:13:23,869 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:13:23,878 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:13:23,879 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:23 WrapperNode [2023-11-19 05:13:23,880 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:13:23,881 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:13:23,881 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:13:23,882 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:13:23,888 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:23" (1/1) ... [2023-11-19 05:13:23,964 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:23" (1/1) ... [2023-11-19 05:13:24,141 INFO L138 Inliner]: procedures = 570, calls = 556, calls flagged for inlining = 24, calls inlined = 22, statements flattened = 1869 [2023-11-19 05:13:24,142 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:13:24,144 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:13:24,144 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:13:24,144 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:13:24,156 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:23" (1/1) ... [2023-11-19 05:13:24,157 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:23" (1/1) ... [2023-11-19 05:13:24,203 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:23" (1/1) ... [2023-11-19 05:13:24,212 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:23" (1/1) ... [2023-11-19 05:13:24,305 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:23" (1/1) ... [2023-11-19 05:13:24,325 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:23" (1/1) ... [2023-11-19 05:13:24,340 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:23" (1/1) ... [2023-11-19 05:13:24,353 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:23" (1/1) ... [2023-11-19 05:13:24,381 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:13:24,382 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:13:24,382 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:13:24,382 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:13:24,383 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:23" (1/1) ... [2023-11-19 05:13:24,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:13:24,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850c87a3-d930-471a-a7b4-b24158a912e9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:13:24,427 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850c87a3-d930-471a-a7b4-b24158a912e9/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:13:24,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850c87a3-d930-471a-a7b4-b24158a912e9/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:13:24,483 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-11-19 05:13:24,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:13:24,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 05:13:24,484 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-19 05:13:24,484 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-19 05:13:24,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 05:13:24,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:13:24,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:13:24,485 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-19 05:13:24,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:13:24,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:13:24,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:13:24,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:13:24,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-19 05:13:24,486 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-19 05:13:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-19 05:13:24,487 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-19 05:13:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 05:13:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 05:13:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 05:13:24,488 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 05:13:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:13:24,488 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:13:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:13:24,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:13:24,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 05:13:24,489 INFO L130 BoogieDeclarations]: Found specification of procedure bb_show_usage [2023-11-19 05:13:24,489 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_show_usage [2023-11-19 05:13:24,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:13:24,490 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-19 05:13:24,490 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-19 05:13:24,490 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-19 05:13:24,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:13:25,014 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:13:25,017 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:13:27,173 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:13:27,908 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:13:27,909 INFO L302 CfgBuilder]: Removed 33 assume(true) statements. [2023-11-19 05:13:27,919 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:13:27 BoogieIcfgContainer [2023-11-19 05:13:27,919 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:13:27,923 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:13:27,923 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:13:27,927 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:13:27,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:13:21" (1/3) ... [2023-11-19 05:13:27,931 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fabcbfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:13:27, skipping insertion in model container [2023-11-19 05:13:27,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:23" (2/3) ... [2023-11-19 05:13:27,933 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fabcbfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:13:27, skipping insertion in model container [2023-11-19 05:13:27,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:13:27" (3/3) ... [2023-11-19 05:13:27,935 INFO L112 eAbstractionObserver]: Analyzing ICFG uname-2.i [2023-11-19 05:13:27,953 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:13:27,953 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 72 error locations. [2023-11-19 05:13:28,052 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:13:28,063 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@42669746, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:13:28,064 INFO L358 AbstractCegarLoop]: Starting to check reachability of 72 error locations. [2023-11-19 05:13:28,078 INFO L276 IsEmpty]: Start isEmpty. Operand has 387 states, 283 states have (on average 1.7279151943462898) internal successors, (489), 357 states have internal predecessors, (489), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 05:13:28,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 05:13:28,086 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:28,086 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 05:13:28,087 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-19 05:13:28,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:28,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1641508, now seen corresponding path program 1 times [2023-11-19 05:13:28,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:13:28,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272553631] [2023-11-19 05:13:28,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:28,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:13:28,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:28,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:13:28,900 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:13:28,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272553631] [2023-11-19 05:13:28,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272553631] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:13:28,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:13:28,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:13:28,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31035585] [2023-11-19 05:13:28,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:13:28,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:13:28,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:13:28,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:13:28,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:13:28,983 INFO L87 Difference]: Start difference. First operand has 387 states, 283 states have (on average 1.7279151943462898) internal successors, (489), 357 states have internal predecessors, (489), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:29,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:13:29,531 INFO L93 Difference]: Finished difference Result 768 states and 1080 transitions. [2023-11-19 05:13:29,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:13:29,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-19 05:13:29,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:13:29,552 INFO L225 Difference]: With dead ends: 768 [2023-11-19 05:13:29,552 INFO L226 Difference]: Without dead ends: 379 [2023-11-19 05:13:29,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:13:29,571 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 1 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:13:29,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 866 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 05:13:29,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2023-11-19 05:13:29,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2023-11-19 05:13:29,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 278 states have (on average 1.6366906474820144) internal successors, (455), 354 states have internal predecessors, (455), 24 states have call successors, (24), 7 states have call predecessors, (24), 5 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-19 05:13:29,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 498 transitions. [2023-11-19 05:13:29,691 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 498 transitions. Word has length 3 [2023-11-19 05:13:29,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:13:29,692 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 498 transitions. [2023-11-19 05:13:29,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:29,694 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 498 transitions. [2023-11-19 05:13:29,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 05:13:29,695 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:29,695 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 05:13:29,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:13:29,696 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-19 05:13:29,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:29,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1657861042, now seen corresponding path program 1 times [2023-11-19 05:13:29,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:13:29,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288624260] [2023-11-19 05:13:29,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:29,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:13:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:30,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:13:30,017 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:13:30,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288624260] [2023-11-19 05:13:30,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288624260] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:13:30,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254232711] [2023-11-19 05:13:30,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:30,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:13:30,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850c87a3-d930-471a-a7b4-b24158a912e9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:13:30,027 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850c87a3-d930-471a-a7b4-b24158a912e9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:13:30,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850c87a3-d930-471a-a7b4-b24158a912e9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:13:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:30,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:13:30,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:13:30,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:13:30,539 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:13:30,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254232711] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:13:30,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:13:30,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-19 05:13:30,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778402939] [2023-11-19 05:13:30,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:13:30,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:13:30,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:13:30,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:13:30,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:13:30,544 INFO L87 Difference]: Start difference. First operand 379 states and 498 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:30,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:13:30,946 INFO L93 Difference]: Finished difference Result 379 states and 498 transitions. [2023-11-19 05:13:30,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:13:30,947 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 05:13:30,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:13:30,951 INFO L225 Difference]: With dead ends: 379 [2023-11-19 05:13:30,952 INFO L226 Difference]: Without dead ends: 378 [2023-11-19 05:13:30,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:13:30,954 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 2 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:13:30,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1278 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 05:13:30,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2023-11-19 05:13:30,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 378. [2023-11-19 05:13:30,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 278 states have (on average 1.6330935251798562) internal successors, (454), 353 states have internal predecessors, (454), 24 states have call successors, (24), 7 states have call predecessors, (24), 5 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-19 05:13:30,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 497 transitions. [2023-11-19 05:13:30,979 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 497 transitions. Word has length 6 [2023-11-19 05:13:30,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:13:30,979 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 497 transitions. [2023-11-19 05:13:30,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:30,980 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 497 transitions. [2023-11-19 05:13:30,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 05:13:30,981 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:30,981 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-19 05:13:31,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850c87a3-d930-471a-a7b4-b24158a912e9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:13:31,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850c87a3-d930-471a-a7b4-b24158a912e9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-19 05:13:31,204 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-19 05:13:31,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:31,204 INFO L85 PathProgramCache]: Analyzing trace with hash -145914911, now seen corresponding path program 1 times [2023-11-19 05:13:31,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:13:31,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281325687] [2023-11-19 05:13:31,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:31,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:13:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:31,426 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:13:31,427 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:13:31,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281325687] [2023-11-19 05:13:31,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281325687] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:13:31,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:13:31,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:13:31,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009487686] [2023-11-19 05:13:31,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:13:31,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:13:31,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:13:31,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:13:31,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:13:31,434 INFO L87 Difference]: Start difference. First operand 378 states and 497 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:31,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:13:31,768 INFO L93 Difference]: Finished difference Result 378 states and 497 transitions. [2023-11-19 05:13:31,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:13:31,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-19 05:13:31,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:13:31,772 INFO L225 Difference]: With dead ends: 378 [2023-11-19 05:13:31,773 INFO L226 Difference]: Without dead ends: 377 [2023-11-19 05:13:31,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:13:31,775 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 0 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:13:31,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 852 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:13:31,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-11-19 05:13:31,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 375. [2023-11-19 05:13:31,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 276 states have (on average 1.6340579710144927) internal successors, (451), 350 states have internal predecessors, (451), 24 states have call successors, (24), 7 states have call predecessors, (24), 5 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-19 05:13:31,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 494 transitions. [2023-11-19 05:13:31,797 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 494 transitions. Word has length 7 [2023-11-19 05:13:31,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:13:31,797 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 494 transitions. [2023-11-19 05:13:31,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:31,798 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 494 transitions. [2023-11-19 05:13:31,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 05:13:31,799 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:31,799 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:13:31,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:13:31,800 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-19 05:13:31,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:31,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1364602848, now seen corresponding path program 1 times [2023-11-19 05:13:31,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:13:31,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846908456] [2023-11-19 05:13:31,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:31,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:13:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:32,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:13:32,131 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:13:32,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846908456] [2023-11-19 05:13:32,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846908456] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:13:32,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082394167] [2023-11-19 05:13:32,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:32,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:13:32,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850c87a3-d930-471a-a7b4-b24158a912e9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:13:32,143 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850c87a3-d930-471a-a7b4-b24158a912e9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:13:32,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850c87a3-d930-471a-a7b4-b24158a912e9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:13:32,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:32,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:13:32,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:13:32,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:13:32,605 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:13:32,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082394167] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:13:32,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:13:32,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 05:13:32,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664092335] [2023-11-19 05:13:32,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:13:32,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:13:32,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:13:32,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:13:32,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:13:32,609 INFO L87 Difference]: Start difference. First operand 375 states and 494 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:13:32,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:13:32,905 INFO L93 Difference]: Finished difference Result 375 states and 494 transitions. [2023-11-19 05:13:32,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:13:32,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-11-19 05:13:32,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:13:32,910 INFO L225 Difference]: With dead ends: 375 [2023-11-19 05:13:32,910 INFO L226 Difference]: Without dead ends: 373 [2023-11-19 05:13:32,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:13:32,911 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 344 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:13:32,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 537 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:13:32,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2023-11-19 05:13:32,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2023-11-19 05:13:32,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 276 states have (on average 1.6268115942028984) internal successors, (449), 348 states have internal predecessors, (449), 24 states have call successors, (24), 7 states have call predecessors, (24), 5 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-19 05:13:32,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 492 transitions. [2023-11-19 05:13:32,939 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 492 transitions. Word has length 9 [2023-11-19 05:13:32,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:13:32,941 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 492 transitions. [2023-11-19 05:13:32,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:13:32,941 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 492 transitions. [2023-11-19 05:13:32,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 05:13:32,942 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:32,943 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:13:32,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850c87a3-d930-471a-a7b4-b24158a912e9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:13:33,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850c87a3-d930-471a-a7b4-b24158a912e9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:13:33,159 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-19 05:13:33,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:33,160 INFO L85 PathProgramCache]: Analyzing trace with hash 646985020, now seen corresponding path program 1 times [2023-11-19 05:13:33,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:13:33,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811392446] [2023-11-19 05:13:33,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:33,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:13:33,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:33,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:13:33,369 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:13:33,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811392446] [2023-11-19 05:13:33,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811392446] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:13:33,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260520522] [2023-11-19 05:13:33,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:33,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:13:33,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850c87a3-d930-471a-a7b4-b24158a912e9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:13:33,372 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850c87a3-d930-471a-a7b4-b24158a912e9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:13:33,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850c87a3-d930-471a-a7b4-b24158a912e9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 05:13:33,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:33,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 671 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:13:33,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:13:33,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:13:33,785 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:13:33,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:13:33,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260520522] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:13:33,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1913924504] [2023-11-19 05:13:33,850 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-19 05:13:33,850 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:13:33,854 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:13:33,861 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:13:33,861 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:14:05,606 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 129 for LOIs [2023-11-19 05:14:05,657 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:14:07,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1913924504] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:07,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:14:07,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 3, 4] total 14 [2023-11-19 05:14:07,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658244157] [2023-11-19 05:14:07,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:07,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 05:14:07,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:07,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 05:14:07,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-19 05:14:07,480 INFO L87 Difference]: Start difference. First operand 373 states and 492 transitions. Second operand has 9 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:14:12,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:12,296 INFO L93 Difference]: Finished difference Result 375 states and 493 transitions. [2023-11-19 05:14:12,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 05:14:12,297 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-11-19 05:14:12,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:12,302 INFO L225 Difference]: With dead ends: 375 [2023-11-19 05:14:12,303 INFO L226 Difference]: Without dead ends: 373 [2023-11-19 05:14:12,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-19 05:14:12,305 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 3 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2033 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:12,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2033 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-19 05:14:12,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2023-11-19 05:14:12,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2023-11-19 05:14:12,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 277 states have (on average 1.6173285198555956) internal successors, (448), 347 states have internal predecessors, (448), 24 states have call successors, (24), 8 states have call predecessors, (24), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-19 05:14:12,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 491 transitions. [2023-11-19 05:14:12,332 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 491 transitions. Word has length 10 [2023-11-19 05:14:12,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:12,332 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 491 transitions. [2023-11-19 05:14:12,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:14:12,333 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 491 transitions. [2023-11-19 05:14:12,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 05:14:12,334 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:12,334 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:12,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850c87a3-d930-471a-a7b4-b24158a912e9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-19 05:14:12,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850c87a3-d930-471a-a7b4-b24158a912e9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:14:12,543 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-19 05:14:12,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:12,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1586842285, now seen corresponding path program 1 times [2023-11-19 05:14:12,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:12,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187126608] [2023-11-19 05:14:12,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:12,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:12,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:12,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:14:12,782 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:12,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187126608] [2023-11-19 05:14:12,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187126608] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:14:12,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532293667] [2023-11-19 05:14:12,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:12,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:14:12,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850c87a3-d930-471a-a7b4-b24158a912e9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:14:12,784 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850c87a3-d930-471a-a7b4-b24158a912e9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:14:12,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_850c87a3-d930-471a-a7b4-b24158a912e9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process