./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df2ab913-89b0-45b7-b90e-df508af05cf6/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df2ab913-89b0-45b7-b90e-df508af05cf6/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_df2ab913-89b0-45b7-b90e-df508af05cf6/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df2ab913-89b0-45b7-b90e-df508af05cf6/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df2ab913-89b0-45b7-b90e-df508af05cf6/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df2ab913-89b0-45b7-b90e-df508af05cf6/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 32bit --witnessprinter.graph.data.programhash 6e6f79eda5be95b806b33aaa2a353a360ae33a1e35cc1bf6f128d14768d932de --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:16:43,108 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:16:43,225 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df2ab913-89b0-45b7-b90e-df508af05cf6/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-24 23:16:43,241 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:16:43,242 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:16:43,294 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:16:43,295 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:16:43,296 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:16:43,297 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:16:43,303 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:16:43,304 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:16:43,305 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:16:43,306 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:16:43,308 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:16:43,309 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:16:43,309 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:16:43,310 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:16:43,310 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:16:43,311 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:16:43,311 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:16:43,312 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:16:43,313 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:16:43,314 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:16:43,314 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:16:43,315 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:16:43,316 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:16:43,316 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:16:43,317 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:16:43,317 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:16:43,318 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:16:43,318 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:16:43,319 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:16:43,319 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:16:43,319 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:16:43,320 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:16:43,320 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:16:43,320 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:16:43,321 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:16:43,321 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:16:43,321 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:16:43,322 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:16:43,322 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:16:43,323 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:16:43,323 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:16:43,323 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:16:43,324 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:16:43,324 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:16:43,324 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:16:43,324 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:16:43,325 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_df2ab913-89b0-45b7-b90e-df508af05cf6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df2ab913-89b0-45b7-b90e-df508af05cf6/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e6f79eda5be95b806b33aaa2a353a360ae33a1e35cc1bf6f128d14768d932de [2023-11-24 23:16:43,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:16:43,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:16:43,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:16:43,716 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:16:43,716 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:16:43,718 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df2ab913-89b0-45b7-b90e-df508af05cf6/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i [2023-11-24 23:16:46,824 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:16:47,290 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:16:47,291 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df2ab913-89b0-45b7-b90e-df508af05cf6/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i [2023-11-24 23:16:47,334 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df2ab913-89b0-45b7-b90e-df508af05cf6/bin/utaipan-verify-SwPr7d2a91/data/1fbc58915/d11a03f8b4cb4a279a80c35709ac3903/FLAG71d4cd9a1 [2023-11-24 23:16:47,351 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df2ab913-89b0-45b7-b90e-df508af05cf6/bin/utaipan-verify-SwPr7d2a91/data/1fbc58915/d11a03f8b4cb4a279a80c35709ac3903 [2023-11-24 23:16:47,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:16:47,361 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:16:47,366 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:16:47,366 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:16:47,371 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:16:47,372 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:16:47" (1/1) ... [2023-11-24 23:16:47,374 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a9672c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:47, skipping insertion in model container [2023-11-24 23:16:47,374 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:16:47" (1/1) ... [2023-11-24 23:16:47,487 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:16:49,240 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:16:49,344 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:16:49,688 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:16:49,860 WARN L675 CHandler]: The function __VERIFIER_nondet_sector_t is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:49,869 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:16:49,870 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:49 WrapperNode [2023-11-24 23:16:49,871 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:16:49,872 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:16:49,872 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:16:49,873 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:16:49,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:49" (1/1) ... [2023-11-24 23:16:50,009 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:49" (1/1) ... [2023-11-24 23:16:50,176 INFO L138 Inliner]: procedures = 474, calls = 840, calls flagged for inlining = 55, calls inlined = 39, statements flattened = 1132 [2023-11-24 23:16:50,177 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:16:50,178 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:16:50,178 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:16:50,178 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:16:50,206 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:49" (1/1) ... [2023-11-24 23:16:50,206 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:49" (1/1) ... [2023-11-24 23:16:50,232 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:49" (1/1) ... [2023-11-24 23:16:50,232 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:49" (1/1) ... [2023-11-24 23:16:50,321 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:49" (1/1) ... [2023-11-24 23:16:50,354 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:49" (1/1) ... [2023-11-24 23:16:50,367 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:49" (1/1) ... [2023-11-24 23:16:50,387 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:49" (1/1) ... [2023-11-24 23:16:50,407 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:16:50,409 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:16:50,409 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:16:50,410 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:16:50,411 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:49" (1/1) ... [2023-11-24 23:16:50,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:16:50,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df2ab913-89b0-45b7-b90e-df508af05cf6/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:50,452 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df2ab913-89b0-45b7-b90e-df508af05cf6/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:16:50,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df2ab913-89b0-45b7-b90e-df508af05cf6/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:16:50,498 INFO L130 BoogieDeclarations]: Found specification of procedure zf_timer_off [2023-11-24 23:16:50,499 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_timer_off [2023-11-24 23:16:50,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 23:16:50,499 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_begin [2023-11-24 23:16:50,499 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-24 23:16:50,499 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-24 23:16:50,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:16:50,499 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-24 23:16:50,500 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-24 23:16:50,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 23:16:50,500 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_end [2023-11-24 23:16:50,500 INFO L130 BoogieDeclarations]: Found specification of procedure zf_get_control [2023-11-24 23:16:50,500 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_get_control [2023-11-24 23:16:50,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-24 23:16:50,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:16:50,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:16:50,501 INFO L130 BoogieDeclarations]: Found specification of procedure request_region [2023-11-24 23:16:50,501 INFO L138 BoogieDeclarations]: Found implementation of procedure request_region [2023-11-24 23:16:50,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:16:50,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:16:50,501 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-24 23:16:50,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-24 23:16:50,501 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irqsave [2023-11-24 23:16:50,502 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irqsave [2023-11-24 23:16:50,502 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2023-11-24 23:16:50,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2023-11-24 23:16:50,502 INFO L130 BoogieDeclarations]: Found specification of procedure release_region [2023-11-24 23:16:50,502 INFO L138 BoogieDeclarations]: Found implementation of procedure release_region [2023-11-24 23:16:50,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:16:50,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:16:50,502 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_init [2023-11-24 23:16:50,503 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_init [2023-11-24 23:16:50,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-24 23:16:50,503 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:16:50,503 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:16:50,503 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2023-11-24 23:16:50,503 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2023-11-24 23:16:50,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:16:50,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:16:50,504 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2023-11-24 23:16:50,504 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2023-11-24 23:16:50,504 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2023-11-24 23:16:50,504 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2023-11-24 23:16:50,504 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2023-11-24 23:16:50,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2023-11-24 23:16:50,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:16:50,504 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-24 23:16:50,505 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-24 23:16:50,505 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2023-11-24 23:16:50,505 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2023-11-24 23:16:50,505 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-11-24 23:16:50,505 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-11-24 23:16:50,505 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2023-11-24 23:16:50,505 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2023-11-24 23:16:50,506 INFO L130 BoogieDeclarations]: Found specification of procedure assert_context_process [2023-11-24 23:16:50,506 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_context_process [2023-11-24 23:16:50,506 INFO L130 BoogieDeclarations]: Found specification of procedure zf_set_control [2023-11-24 23:16:50,506 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_set_control [2023-11-24 23:16:50,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:16:50,506 INFO L130 BoogieDeclarations]: Found specification of procedure zf_readw [2023-11-24 23:16:50,506 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_readw [2023-11-24 23:16:50,506 INFO L130 BoogieDeclarations]: Found specification of procedure zf_ping [2023-11-24 23:16:50,506 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_ping [2023-11-24 23:16:50,507 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~TO~int [2023-11-24 23:16:50,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~TO~int [2023-11-24 23:16:50,507 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-24 23:16:50,507 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-24 23:16:50,507 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-24 23:16:50,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-24 23:16:50,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:16:50,888 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:16:50,892 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:16:52,934 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:16:53,424 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:16:53,424 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-24 23:16:53,426 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:16:53 BoogieIcfgContainer [2023-11-24 23:16:53,427 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:16:53,429 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:16:53,430 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:16:53,433 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:16:53,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:16:47" (1/3) ... [2023-11-24 23:16:53,434 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@651929a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:16:53, skipping insertion in model container [2023-11-24 23:16:53,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:49" (2/3) ... [2023-11-24 23:16:53,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@651929a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:16:53, skipping insertion in model container [2023-11-24 23:16:53,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:16:53" (3/3) ... [2023-11-24 23:16:53,436 INFO L112 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_inw.i [2023-11-24 23:16:53,458 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:16:53,458 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2023-11-24 23:16:53,521 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:16:53,529 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;@3926975a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:16:53,529 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-24 23:16:53,536 INFO L276 IsEmpty]: Start isEmpty. Operand has 311 states, 185 states have (on average 1.427027027027027) internal successors, (264), 212 states have internal predecessors, (264), 78 states have call successors, (78), 26 states have call predecessors, (78), 26 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-11-24 23:16:53,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:16:53,543 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:53,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:53,545 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [zf_pingErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, zf_pingErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, zf_readwErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-24 23:16:53,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:53,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1219343088, now seen corresponding path program 1 times [2023-11-24 23:16:53,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:53,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93375406] [2023-11-24 23:16:53,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:53,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:53,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:54,263 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 23:16:54,263 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:54,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93375406] [2023-11-24 23:16:54,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93375406] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:54,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:16:54,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:16:54,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397300279] [2023-11-24 23:16:54,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:54,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:16:54,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:54,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:16:54,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:16:54,307 INFO L87 Difference]: Start difference. First operand has 311 states, 185 states have (on average 1.427027027027027) internal successors, (264), 212 states have internal predecessors, (264), 78 states have call successors, (78), 26 states have call predecessors, (78), 26 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 23:16:55,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:55,704 INFO L93 Difference]: Finished difference Result 622 states and 842 transitions. [2023-11-24 23:16:55,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:16:55,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 7 [2023-11-24 23:16:55,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:55,733 INFO L225 Difference]: With dead ends: 622 [2023-11-24 23:16:55,734 INFO L226 Difference]: Without dead ends: 311 [2023-11-24 23:16:55,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 23:16:55,756 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 7 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:55,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1062 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-24 23:16:55,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-11-24 23:16:55,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 307. [2023-11-24 23:16:55,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 186 states have (on average 1.403225806451613) internal successors, (261), 211 states have internal predecessors, (261), 76 states have call successors, (76), 26 states have call predecessors, (76), 26 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2023-11-24 23:16:55,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 412 transitions. [2023-11-24 23:16:55,857 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 412 transitions. Word has length 7 [2023-11-24 23:16:55,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:55,858 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 412 transitions. [2023-11-24 23:16:55,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 23:16:55,859 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 412 transitions. [2023-11-24 23:16:55,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 23:16:55,860 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:55,860 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:55,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:16:55,861 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [zf_pingErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, zf_pingErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, zf_readwErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-24 23:16:55,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:55,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1383075102, now seen corresponding path program 1 times [2023-11-24 23:16:55,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:55,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351063992] [2023-11-24 23:16:55,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:55,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:56,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:56,290 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 23:16:56,290 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:56,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351063992] [2023-11-24 23:16:56,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351063992] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:16:56,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872434976] [2023-11-24 23:16:56,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:56,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:56,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df2ab913-89b0-45b7-b90e-df508af05cf6/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:56,295 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df2ab913-89b0-45b7-b90e-df508af05cf6/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:16:56,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df2ab913-89b0-45b7-b90e-df508af05cf6/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:16:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:56,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 682 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:16:56,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:56,834 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 23:16:56,834 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:16:56,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872434976] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:56,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:16:56,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-24 23:16:56,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728555479] [2023-11-24 23:16:56,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:56,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:16:56,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:56,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:16:56,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:16:56,839 INFO L87 Difference]: Start difference. First operand 307 states and 412 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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 23:16:58,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:58,377 INFO L93 Difference]: Finished difference Result 311 states and 416 transitions. [2023-11-24 23:16:58,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:16:58,378 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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 23:16:58,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:58,382 INFO L225 Difference]: With dead ends: 311 [2023-11-24 23:16:58,382 INFO L226 Difference]: Without dead ends: 310 [2023-11-24 23:16:58,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-24 23:16:58,384 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 9 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:58,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1386 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-24 23:16:58,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2023-11-24 23:16:58,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 306. [2023-11-24 23:16:58,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 186 states have (on average 1.3978494623655915) internal successors, (260), 210 states have internal predecessors, (260), 76 states have call successors, (76), 26 states have call predecessors, (76), 26 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2023-11-24 23:16:58,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 411 transitions. [2023-11-24 23:16:58,417 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 411 transitions. Word has length 10 [2023-11-24 23:16:58,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:58,418 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 411 transitions. [2023-11-24 23:16:58,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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 23:16:58,418 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 411 transitions. [2023-11-24 23:16:58,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 23:16:58,419 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:58,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:58,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df2ab913-89b0-45b7-b90e-df508af05cf6/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:16:58,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df2ab913-89b0-45b7-b90e-df508af05cf6/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:58,627 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [zf_pingErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, zf_pingErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, zf_readwErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-24 23:16:58,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:58,633 INFO L85 PathProgramCache]: Analyzing trace with hash 74406211, now seen corresponding path program 1 times [2023-11-24 23:16:58,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:58,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644162920] [2023-11-24 23:16:58,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:58,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:58,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:58,960 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 23:16:58,960 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:58,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644162920] [2023-11-24 23:16:58,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644162920] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:16:58,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355019081] [2023-11-24 23:16:58,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:58,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:58,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df2ab913-89b0-45b7-b90e-df508af05cf6/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:58,963 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df2ab913-89b0-45b7-b90e-df508af05cf6/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:16:58,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df2ab913-89b0-45b7-b90e-df508af05cf6/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:16:59,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:59,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:16:59,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:59,488 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 23:16:59,489 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:16:59,542 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 23:16:59,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355019081] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:16:59,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [317710905] [2023-11-24 23:16:59,568 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2023-11-24 23:16:59,568 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:16:59,574 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:16:59,581 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:16:59,582 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:17:25,877 INFO L197 IcfgInterpreter]: Interpreting procedure spin_lock_init with input of size 761 for LOIs [2023-11-24 23:17:26,917 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:17:39,464 WARN L293 SmtUtils]: Spent 12.30s on a formula simplification. DAG size of input: 751 DAG size of output: 687 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)