./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/du-2.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_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/du-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash dc1aa558e8966dd31218aa17494259e08e3048f7220d79561139d1f3451a8f14 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:49:40,928 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:49:41,012 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-24 23:49:41,016 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:49:41,017 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:49:41,063 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:49:41,064 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:49:41,065 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:49:41,066 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:49:41,071 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:49:41,071 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:49:41,072 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:49:41,073 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:49:41,074 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:49:41,075 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:49:41,075 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:49:41,076 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:49:41,076 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:49:41,077 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:49:41,077 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:49:41,077 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:49:41,078 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:49:41,079 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:49:41,080 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:49:41,080 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:49:41,081 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:49:41,081 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:49:41,081 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:49:41,082 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:49:41,082 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:49:41,084 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:49:41,084 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:49:41,084 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:49:41,084 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:49:41,085 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:49:41,085 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:49:41,085 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:49:41,086 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:49:41,086 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:49:41,086 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:49:41,087 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:49:41,087 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:49:41,088 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:49:41,088 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:49:41,088 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:49:41,089 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:49:41,089 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_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc1aa558e8966dd31218aa17494259e08e3048f7220d79561139d1f3451a8f14 [2023-11-24 23:49:41,473 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:49:41,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:49:41,509 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:49:41,510 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:49:41,512 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:49:41,513 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/busybox-1.22.0/du-2.i [2023-11-24 23:49:44,544 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:49:45,100 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:49:45,101 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/sv-benchmarks/c/busybox-1.22.0/du-2.i [2023-11-24 23:49:45,141 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/data/e0cba8082/baaaa4dbc07d45a09f1c7643c15e5846/FLAG1a748f7cb [2023-11-24 23:49:45,158 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/data/e0cba8082/baaaa4dbc07d45a09f1c7643c15e5846 [2023-11-24 23:49:45,163 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:49:45,164 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:49:45,170 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:49:45,170 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:49:45,175 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:49:45,175 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:49:45" (1/1) ... [2023-11-24 23:49:45,176 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2865ac4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:45, skipping insertion in model container [2023-11-24 23:49:45,177 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:49:45" (1/1) ... [2023-11-24 23:49:45,274 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:49:47,379 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:49:47,415 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:49:47,699 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:49:47,988 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:49:47,989 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:49:47,989 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:49:47,989 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:49:47,997 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:49:47,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:47 WrapperNode [2023-11-24 23:49:47,998 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:49:47,999 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:49:47,999 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:49:48,000 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:49:48,010 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:47" (1/1) ... [2023-11-24 23:49:48,078 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:47" (1/1) ... [2023-11-24 23:49:48,200 INFO L138 Inliner]: procedures = 670, calls = 592, calls flagged for inlining = 35, calls inlined = 33, statements flattened = 2283 [2023-11-24 23:49:48,211 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:49:48,212 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:49:48,213 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:49:48,213 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:49:48,222 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:47" (1/1) ... [2023-11-24 23:49:48,223 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:47" (1/1) ... [2023-11-24 23:49:48,237 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:47" (1/1) ... [2023-11-24 23:49:48,238 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:47" (1/1) ... [2023-11-24 23:49:48,320 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:47" (1/1) ... [2023-11-24 23:49:48,339 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:47" (1/1) ... [2023-11-24 23:49:48,353 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:47" (1/1) ... [2023-11-24 23:49:48,367 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:47" (1/1) ... [2023-11-24 23:49:48,399 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:49:48,400 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:49:48,400 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:49:48,400 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:49:48,401 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:47" (1/1) ... [2023-11-24 23:49:48,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:49:48,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:49:48,453 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:49:48,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:49:48,494 INFO L130 BoogieDeclarations]: Found specification of procedure vasprintf [2023-11-24 23:49:48,494 INFO L138 BoogieDeclarations]: Found implementation of procedure vasprintf [2023-11-24 23:49:48,495 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-24 23:49:48,495 INFO L130 BoogieDeclarations]: Found specification of procedure du [2023-11-24 23:49:48,496 INFO L138 BoogieDeclarations]: Found implementation of procedure du [2023-11-24 23:49:48,497 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-24 23:49:48,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:49:48,497 INFO L130 BoogieDeclarations]: Found specification of procedure xzalloc [2023-11-24 23:49:48,498 INFO L138 BoogieDeclarations]: Found implementation of procedure xzalloc [2023-11-24 23:49:48,498 INFO L130 BoogieDeclarations]: Found specification of procedure print [2023-11-24 23:49:48,498 INFO L138 BoogieDeclarations]: Found implementation of procedure print [2023-11-24 23:49:48,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-24 23:49:48,498 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-24 23:49:48,499 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-24 23:49:48,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-24 23:49:48,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:49:48,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:49:48,501 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-24 23:49:48,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:49:48,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:49:48,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:49:48,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:49:48,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-24 23:49:48,502 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-24 23:49:48,503 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-24 23:49:48,503 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-24 23:49:48,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-24 23:49:48,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-24 23:49:48,504 INFO L130 BoogieDeclarations]: Found specification of procedure bb_simple_perror_msg [2023-11-24 23:49:48,504 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_simple_perror_msg [2023-11-24 23:49:48,504 INFO L130 BoogieDeclarations]: Found specification of procedure stat [2023-11-24 23:49:48,504 INFO L138 BoogieDeclarations]: Found implementation of procedure stat [2023-11-24 23:49:48,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-24 23:49:48,505 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-24 23:49:48,505 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:49:48,505 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:49:48,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:49:48,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:49:48,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:49:48,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:49:48,506 INFO L130 BoogieDeclarations]: Found specification of procedure bb_perror_msg [2023-11-24 23:49:48,506 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_perror_msg [2023-11-24 23:49:48,506 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-24 23:49:48,506 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-24 23:49:48,506 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-24 23:49:48,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:49:49,220 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:49:49,223 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:49:51,993 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:49:52,964 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:49:52,964 INFO L309 CfgBuilder]: Removed 34 assume(true) statements. [2023-11-24 23:49:52,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:49:52 BoogieIcfgContainer [2023-11-24 23:49:52,967 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:49:52,971 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:49:52,971 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:49:52,975 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:49:52,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:49:45" (1/3) ... [2023-11-24 23:49:52,976 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b37e61a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:49:52, skipping insertion in model container [2023-11-24 23:49:52,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:47" (2/3) ... [2023-11-24 23:49:52,979 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b37e61a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:49:52, skipping insertion in model container [2023-11-24 23:49:52,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:49:52" (3/3) ... [2023-11-24 23:49:52,982 INFO L112 eAbstractionObserver]: Analyzing ICFG du-2.i [2023-11-24 23:49:53,006 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:49:53,007 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 76 error locations. [2023-11-24 23:49:53,108 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:49:53,118 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;@27743e41, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:49:53,119 INFO L358 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2023-11-24 23:49:53,127 INFO L276 IsEmpty]: Start isEmpty. Operand has 508 states, 375 states have (on average 1.6666666666666667) internal successors, (625), 453 states have internal predecessors, (625), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-11-24 23:49:53,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 23:49:53,137 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:53,137 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-24 23:49:53,138 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-24 23:49:53,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:53,145 INFO L85 PathProgramCache]: Analyzing trace with hash 2205022, now seen corresponding path program 1 times [2023-11-24 23:49:53,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:53,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430524563] [2023-11-24 23:49:53,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:53,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:53,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:53,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:53,802 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:53,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430524563] [2023-11-24 23:49:53,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430524563] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:53,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:53,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 23:49:53,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858382739] [2023-11-24 23:49:53,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:53,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:49:53,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:53,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:49:53,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:49:53,844 INFO L87 Difference]: Start difference. First operand has 508 states, 375 states have (on average 1.6666666666666667) internal successors, (625), 453 states have internal predecessors, (625), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) 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) [2023-11-24 23:49:54,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:54,687 INFO L93 Difference]: Finished difference Result 1009 states and 1440 transitions. [2023-11-24 23:49:54,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:49:54,690 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 [2023-11-24 23:49:54,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:54,705 INFO L225 Difference]: With dead ends: 1009 [2023-11-24 23:49:54,705 INFO L226 Difference]: Without dead ends: 503 [2023-11-24 23:49:54,713 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 [2023-11-24 23:49:54,717 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 1 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:54,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1160 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-24 23:49:54,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2023-11-24 23:49:54,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 503. [2023-11-24 23:49:54,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 372 states have (on average 1.5940860215053763) internal successors, (593), 454 states have internal predecessors, (593), 43 states have call successors, (43), 13 states have call predecessors, (43), 12 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-24 23:49:54,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 673 transitions. [2023-11-24 23:49:54,799 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 673 transitions. Word has length 3 [2023-11-24 23:49:54,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:54,800 INFO L495 AbstractCegarLoop]: Abstraction has 503 states and 673 transitions. [2023-11-24 23:49:54,800 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) [2023-11-24 23:49:54,800 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 673 transitions. [2023-11-24 23:49:54,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 23:49:54,801 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:54,801 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-24 23:49:54,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:49:54,802 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-24 23:49:54,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:54,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1266125988, now seen corresponding path program 1 times [2023-11-24 23:49:54,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:54,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820260598] [2023-11-24 23:49:54,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:54,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:54,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:54,984 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:54,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820260598] [2023-11-24 23:49:54,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820260598] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:49:54,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952901586] [2023-11-24 23:49:54,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:54,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:54,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:49:54,989 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:49:55,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:49:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:55,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:49:55,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:55,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:55,440 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:55,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952901586] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:55,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:49:55,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-24 23:49:55,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255812524] [2023-11-24 23:49:55,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:55,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:49:55,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:55,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:49:55,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:49:55,443 INFO L87 Difference]: Start difference. First operand 503 states and 673 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) [2023-11-24 23:49:57,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:57,048 INFO L93 Difference]: Finished difference Result 503 states and 673 transitions. [2023-11-24 23:49:57,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:49:57,058 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 [2023-11-24 23:49:57,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:57,062 INFO L225 Difference]: With dead ends: 503 [2023-11-24 23:49:57,062 INFO L226 Difference]: Without dead ends: 502 [2023-11-24 23:49:57,063 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 [2023-11-24 23:49:57,064 INFO L413 NwaCegarLoop]: 578 mSDtfsCounter, 2 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1734 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:57,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1734 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-24 23:49:57,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2023-11-24 23:49:57,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 502. [2023-11-24 23:49:57,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 372 states have (on average 1.5913978494623655) internal successors, (592), 453 states have internal predecessors, (592), 43 states have call successors, (43), 13 states have call predecessors, (43), 12 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-24 23:49:57,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 672 transitions. [2023-11-24 23:49:57,097 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 672 transitions. Word has length 6 [2023-11-24 23:49:57,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:57,098 INFO L495 AbstractCegarLoop]: Abstraction has 502 states and 672 transitions. [2023-11-24 23:49:57,098 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) [2023-11-24 23:49:57,098 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 672 transitions. [2023-11-24 23:49:57,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:49:57,099 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:57,099 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-24 23:49:57,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:49:57,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:57,306 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-24 23:49:57,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:57,306 INFO L85 PathProgramCache]: Analyzing trace with hash 595200795, now seen corresponding path program 1 times [2023-11-24 23:49:57,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:57,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839737649] [2023-11-24 23:49:57,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:57,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:57,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:57,482 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:49:57,483 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:57,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839737649] [2023-11-24 23:49:57,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839737649] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:57,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:57,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:49:57,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267795659] [2023-11-24 23:49:57,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:57,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:49:57,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:57,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:49:57,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:49:57,488 INFO L87 Difference]: Start difference. First operand 502 states and 672 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) [2023-11-24 23:49:58,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:58,465 INFO L93 Difference]: Finished difference Result 502 states and 672 transitions. [2023-11-24 23:49:58,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:49:58,466 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 [2023-11-24 23:49:58,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:58,471 INFO L225 Difference]: With dead ends: 502 [2023-11-24 23:49:58,471 INFO L226 Difference]: Without dead ends: 501 [2023-11-24 23:49:58,471 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 [2023-11-24 23:49:58,473 INFO L413 NwaCegarLoop]: 578 mSDtfsCounter, 0 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:58,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1156 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-24 23:49:58,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2023-11-24 23:49:58,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 499. [2023-11-24 23:49:58,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 370 states have (on average 1.5918918918918918) internal successors, (589), 450 states have internal predecessors, (589), 43 states have call successors, (43), 13 states have call predecessors, (43), 12 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-24 23:49:58,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 669 transitions. [2023-11-24 23:49:58,503 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 669 transitions. Word has length 7 [2023-11-24 23:49:58,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:58,503 INFO L495 AbstractCegarLoop]: Abstraction has 499 states and 669 transitions. [2023-11-24 23:49:58,504 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) [2023-11-24 23:49:58,504 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 669 transitions. [2023-11-24 23:49:58,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 23:49:58,504 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:58,505 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:58,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:49:58,505 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-24 23:49:58,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:58,506 INFO L85 PathProgramCache]: Analyzing trace with hash -2089196741, now seen corresponding path program 1 times [2023-11-24 23:49:58,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:58,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610341716] [2023-11-24 23:49:58,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:58,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:58,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:58,665 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:58,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610341716] [2023-11-24 23:49:58,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610341716] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:49:58,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867889782] [2023-11-24 23:49:58,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:58,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:58,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:49:58,668 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:49:58,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:49:59,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:59,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:49:59,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:59,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:49:59,078 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:59,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867889782] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:59,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:49:59,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-24 23:49:59,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783980568] [2023-11-24 23:49:59,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:59,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:49:59,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:59,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:49:59,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:49:59,081 INFO L87 Difference]: Start difference. First operand 499 states and 669 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) [2023-11-24 23:49:59,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:59,919 INFO L93 Difference]: Finished difference Result 499 states and 669 transitions. [2023-11-24 23:49:59,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:49:59,920 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 [2023-11-24 23:49:59,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:59,924 INFO L225 Difference]: With dead ends: 499 [2023-11-24 23:49:59,924 INFO L226 Difference]: Without dead ends: 497 [2023-11-24 23:49:59,925 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 [2023-11-24 23:49:59,926 INFO L413 NwaCegarLoop]: 571 mSDtfsCounter, 309 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:59,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 877 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-24 23:49:59,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2023-11-24 23:49:59,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 497. [2023-11-24 23:49:59,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 370 states have (on average 1.5864864864864865) internal successors, (587), 448 states have internal predecessors, (587), 43 states have call successors, (43), 13 states have call predecessors, (43), 12 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-24 23:49:59,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 667 transitions. [2023-11-24 23:49:59,991 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 667 transitions. Word has length 9 [2023-11-24 23:49:59,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:59,993 INFO L495 AbstractCegarLoop]: Abstraction has 497 states and 667 transitions. [2023-11-24 23:49:59,993 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) [2023-11-24 23:49:59,993 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 667 transitions. [2023-11-24 23:49:59,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 23:49:59,994 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:59,994 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:50:00,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-24 23:50:00,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:50:00,203 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-24 23:50:00,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:00,204 INFO L85 PathProgramCache]: Analyzing trace with hash -340588691, now seen corresponding path program 1 times [2023-11-24 23:50:00,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:50:00,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929368252] [2023-11-24 23:50:00,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:00,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:50:00,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:00,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:50:00,404 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:50:00,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929368252] [2023-11-24 23:50:00,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929368252] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:50:00,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898151464] [2023-11-24 23:50:00,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:00,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:50:00,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:50:00,406 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:50:00,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:50:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:00,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:50:00,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:50:00,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:50:00,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:50:00,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:50:00,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898151464] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:50:00,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1279965381] [2023-11-24 23:50:00,868 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-24 23:50:00,868 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:50:00,872 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:50:00,879 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:50:00,880 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:50:15,193 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 142 for LOIs [2023-11-24 23:50:15,269 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:50:18,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1279965381] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:18,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:50:18,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 3, 4] total 14 [2023-11-24 23:50:18,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992074306] [2023-11-24 23:50:18,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:18,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 23:50:18,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:50:18,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 23:50:18,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-24 23:50:18,146 INFO L87 Difference]: Start difference. First operand 497 states and 667 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) [2023-11-24 23:50:24,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-24 23:50:28,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:50:28,374 INFO L93 Difference]: Finished difference Result 499 states and 668 transitions. [2023-11-24 23:50:28,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:50:28,377 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 [2023-11-24 23:50:28,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:50:28,381 INFO L225 Difference]: With dead ends: 499 [2023-11-24 23:50:28,382 INFO L226 Difference]: Without dead ends: 497 [2023-11-24 23:50:28,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-24 23:50:28,383 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 3 mSDsluCounter, 2239 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2808 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:50:28,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2808 Invalid, 1162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1160 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2023-11-24 23:50:28,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2023-11-24 23:50:28,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 497. [2023-11-24 23:50:28,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 371 states have (on average 1.5795148247978437) internal successors, (586), 447 states have internal predecessors, (586), 43 states have call successors, (43), 14 states have call predecessors, (43), 13 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-24 23:50:28,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 666 transitions. [2023-11-24 23:50:28,413 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 666 transitions. Word has length 10 [2023-11-24 23:50:28,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:50:28,413 INFO L495 AbstractCegarLoop]: Abstraction has 497 states and 666 transitions. [2023-11-24 23:50:28,413 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) [2023-11-24 23:50:28,414 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 666 transitions. [2023-11-24 23:50:28,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-24 23:50:28,414 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:28,414 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:50:28,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:50:28,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:50:28,623 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-24 23:50:28,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:28,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1207971671, now seen corresponding path program 1 times [2023-11-24 23:50:28,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:50:28,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580158717] [2023-11-24 23:50:28,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:28,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:50:28,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:28,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:50:28,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:50:28,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580158717] [2023-11-24 23:50:28,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580158717] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:50:28,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012670592] [2023-11-24 23:50:28,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:28,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:50:28,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:50:28,848 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:50:28,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:50:29,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:29,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:50:29,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:50:29,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:50:29,262 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:50:29,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012670592] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:29,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:50:29,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-24 23:50:29,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520426129] [2023-11-24 23:50:29,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:29,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:50:29,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:50:29,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:50:29,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:50:29,264 INFO L87 Difference]: Start difference. First operand 497 states and 666 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:50:30,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:50:30,404 INFO L93 Difference]: Finished difference Result 497 states and 666 transitions. [2023-11-24 23:50:30,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:50:30,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-24 23:50:30,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:50:30,410 INFO L225 Difference]: With dead ends: 497 [2023-11-24 23:50:30,410 INFO L226 Difference]: Without dead ends: 496 [2023-11-24 23:50:30,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:50:30,412 INFO L413 NwaCegarLoop]: 571 mSDtfsCounter, 7 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:50:30,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1137 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-24 23:50:30,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2023-11-24 23:50:30,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 496. [2023-11-24 23:50:30,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 371 states have (on average 1.5768194070080863) internal successors, (585), 446 states have internal predecessors, (585), 43 states have call successors, (43), 14 states have call predecessors, (43), 13 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-24 23:50:30,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 665 transitions. [2023-11-24 23:50:30,449 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 665 transitions. Word has length 15 [2023-11-24 23:50:30,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:50:30,449 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 665 transitions. [2023-11-24 23:50:30,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:50:30,450 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 665 transitions. [2023-11-24 23:50:30,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-24 23:50:30,450 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:30,451 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:50:30,465 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-24 23:50:30,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:50:30,660 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-24 23:50:30,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:30,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1207924232, now seen corresponding path program 1 times [2023-11-24 23:50:30,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:50:30,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464965608] [2023-11-24 23:50:30,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:30,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:50:30,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:30,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:50:30,862 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:50:30,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464965608] [2023-11-24 23:50:30,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464965608] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:50:30,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248333413] [2023-11-24 23:50:30,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:30,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:50:30,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:50:30,864 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:50:30,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 23:50:31,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:31,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:50:31,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:50:31,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:50:31,379 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:50:31,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248333413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:31,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:50:31,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-24 23:50:31,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992766110] [2023-11-24 23:50:31,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:31,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:50:31,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:50:31,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:50:31,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:50:31,382 INFO L87 Difference]: Start difference. First operand 496 states and 665 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:50:32,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:50:32,564 INFO L93 Difference]: Finished difference Result 496 states and 665 transitions. [2023-11-24 23:50:32,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:50:32,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-24 23:50:32,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:50:32,570 INFO L225 Difference]: With dead ends: 496 [2023-11-24 23:50:32,570 INFO L226 Difference]: Without dead ends: 495 [2023-11-24 23:50:32,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:50:32,571 INFO L413 NwaCegarLoop]: 571 mSDtfsCounter, 2 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:50:32,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1141 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-24 23:50:32,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2023-11-24 23:50:32,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 495. [2023-11-24 23:50:32,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 371 states have (on average 1.5741239892183287) internal successors, (584), 445 states have internal predecessors, (584), 43 states have call successors, (43), 14 states have call predecessors, (43), 13 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-24 23:50:32,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 664 transitions. [2023-11-24 23:50:32,606 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 664 transitions. Word has length 15 [2023-11-24 23:50:32,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:50:32,607 INFO L495 AbstractCegarLoop]: Abstraction has 495 states and 664 transitions. [2023-11-24 23:50:32,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:50:32,607 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 664 transitions. [2023-11-24 23:50:32,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-24 23:50:32,608 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:32,608 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:50:32,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 23:50:32,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:50:32,817 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-24 23:50:32,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:32,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1207582989, now seen corresponding path program 1 times [2023-11-24 23:50:32,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:50:32,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016702433] [2023-11-24 23:50:32,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:32,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:50:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:33,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:50:33,071 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:50:33,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016702433] [2023-11-24 23:50:33,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016702433] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:50:33,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622956122] [2023-11-24 23:50:33,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:33,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:50:33,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:50:33,074 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:50:33,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2458a5b-de5d-4fe8-8b9e-8ebcbcc151b9/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-24 23:50:33,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:33,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:50:33,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:50:33,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:50:33,604 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:50:33,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622956122] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:33,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:50:33,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-24 23:50:33,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568279503] [2023-11-24 23:50:33,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:33,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:50:33,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:50:33,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:50:33,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:50:33,607 INFO L87 Difference]: Start difference. First operand 495 states and 664 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 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)