./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/systemc/token_ring.01.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 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_509ef543-bf2f-44b4-a52b-0b3d630e2422/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ef543-bf2f-44b4-a52b-0b3d630e2422/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ef543-bf2f-44b4-a52b-0b3d630e2422/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ef543-bf2f-44b4-a52b-0b3d630e2422/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.01.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ef543-bf2f-44b4-a52b-0b3d630e2422/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ef543-bf2f-44b4-a52b-0b3d630e2422/bin/utaipan-verify-mE87zJ7Ire --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 327bb4ad7f981d20a6e5212aac300a9249d1857b0280531d57d587d5a0195c5f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:21:41,071 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:21:41,182 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ef543-bf2f-44b4-a52b-0b3d630e2422/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-23 21:21:41,196 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:21:41,200 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:21:41,255 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:21:41,256 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:21:41,257 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:21:41,258 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:21:41,264 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:21:41,264 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:21:41,265 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:21:41,266 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:21:41,268 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:21:41,268 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:21:41,269 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:21:41,269 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:21:41,270 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:21:41,270 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:21:41,271 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:21:41,273 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:21:41,274 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:21:41,275 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:21:41,276 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:21:41,276 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:21:41,277 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:21:41,277 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:21:41,278 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:21:41,278 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:21:41,279 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:21:41,280 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:21:41,281 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 21:21:41,281 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:21:41,281 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:21:41,282 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:21:41,282 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:21:41,282 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:21:41,282 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:21:41,283 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:21:41,283 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:21:41,283 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:21:41,284 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:21:41,284 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:21:41,284 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:21:41,285 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:21:41,285 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:21:41,286 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:21:41,286 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:21:41,286 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:21:41,286 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_509ef543-bf2f-44b4-a52b-0b3d630e2422/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ef543-bf2f-44b4-a52b-0b3d630e2422/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 327bb4ad7f981d20a6e5212aac300a9249d1857b0280531d57d587d5a0195c5f [2023-11-23 21:21:41,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:21:41,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:21:41,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:21:41,662 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:21:41,662 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:21:41,664 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ef543-bf2f-44b4-a52b-0b3d630e2422/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/systemc/token_ring.01.cil-2.c [2023-11-23 21:21:45,209 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:21:45,531 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:21:45,531 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ef543-bf2f-44b4-a52b-0b3d630e2422/sv-benchmarks/c/systemc/token_ring.01.cil-2.c [2023-11-23 21:21:45,542 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ef543-bf2f-44b4-a52b-0b3d630e2422/bin/utaipan-verify-mE87zJ7Ire/data/2c401f3ed/885313fc8f0c4f2f98b53a25fb36537c/FLAG7c3aa5b87 [2023-11-23 21:21:45,555 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ef543-bf2f-44b4-a52b-0b3d630e2422/bin/utaipan-verify-mE87zJ7Ire/data/2c401f3ed/885313fc8f0c4f2f98b53a25fb36537c [2023-11-23 21:21:45,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:21:45,559 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:21:45,561 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:21:45,561 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:21:45,567 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:21:45,568 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:21:45" (1/1) ... [2023-11-23 21:21:45,569 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1053a6f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:45, skipping insertion in model container [2023-11-23 21:21:45,569 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:21:45" (1/1) ... [2023-11-23 21:21:45,619 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:21:45,829 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:21:45,841 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:21:45,881 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:21:45,900 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:21:45,900 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:45 WrapperNode [2023-11-23 21:21:45,901 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:21:45,902 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:21:45,902 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:21:45,902 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:21:45,910 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:45" (1/1) ... [2023-11-23 21:21:45,918 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:45" (1/1) ... [2023-11-23 21:21:45,947 INFO L138 Inliner]: procedures = 30, calls = 36, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 234 [2023-11-23 21:21:45,948 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:21:45,949 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:21:45,949 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:21:45,949 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:21:45,957 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:45" (1/1) ... [2023-11-23 21:21:45,957 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:45" (1/1) ... [2023-11-23 21:21:45,960 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:45" (1/1) ... [2023-11-23 21:21:45,960 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:45" (1/1) ... [2023-11-23 21:21:45,968 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:45" (1/1) ... [2023-11-23 21:21:45,988 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:45" (1/1) ... [2023-11-23 21:21:45,990 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:45" (1/1) ... [2023-11-23 21:21:45,992 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:45" (1/1) ... [2023-11-23 21:21:45,995 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:21:45,996 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:21:45,996 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:21:45,996 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:21:46,007 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:45" (1/1) ... [2023-11-23 21:21:46,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:21:46,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ef543-bf2f-44b4-a52b-0b3d630e2422/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:21:46,044 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ef543-bf2f-44b4-a52b-0b3d630e2422/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:21:46,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ef543-bf2f-44b4-a52b-0b3d630e2422/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:21:46,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:21:46,086 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-11-23 21:21:46,086 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-11-23 21:21:46,086 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-23 21:21:46,086 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-23 21:21:46,087 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-23 21:21:46,087 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-23 21:21:46,087 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-23 21:21:46,087 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-23 21:21:46,087 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-23 21:21:46,087 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-23 21:21:46,087 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-23 21:21:46,088 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-23 21:21:46,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:21:46,088 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-23 21:21:46,088 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-23 21:21:46,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:21:46,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:21:46,167 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:21:46,170 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:21:46,550 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:21:46,752 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:21:46,753 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-23 21:21:46,755 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:21:46 BoogieIcfgContainer [2023-11-23 21:21:46,755 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:21:46,759 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:21:46,760 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:21:46,764 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:21:46,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:21:45" (1/3) ... [2023-11-23 21:21:46,765 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec557e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:21:46, skipping insertion in model container [2023-11-23 21:21:46,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:45" (2/3) ... [2023-11-23 21:21:46,766 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec557e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:21:46, skipping insertion in model container [2023-11-23 21:21:46,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:21:46" (3/3) ... [2023-11-23 21:21:46,768 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.01.cil-2.c [2023-11-23 21:21:46,794 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:21:46,795 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-23 21:21:46,873 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:21:46,883 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;@744b14dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:21:46,884 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-23 21:21:46,890 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 53 states have (on average 1.490566037735849) internal successors, (79), 60 states have internal predecessors, (79), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-23 21:21:46,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-23 21:21:46,903 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:21:46,904 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:21:46,905 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-23 21:21:46,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:21:46,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1430459322, now seen corresponding path program 1 times [2023-11-23 21:21:46,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:21:46,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544396116] [2023-11-23 21:21:46,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:21:46,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:21:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:21:47,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:21:47,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:21:47,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544396116] [2023-11-23 21:21:47,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544396116] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:21:47,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:21:47,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:21:47,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210186836] [2023-11-23 21:21:47,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:21:47,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:21:47,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:21:47,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:21:47,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:21:47,401 INFO L87 Difference]: Start difference. First operand has 82 states, 53 states have (on average 1.490566037735849) internal successors, (79), 60 states have internal predecessors, (79), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 21:21:47,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:21:47,823 INFO L93 Difference]: Finished difference Result 219 states and 310 transitions. [2023-11-23 21:21:47,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:21:47,826 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 32 [2023-11-23 21:21:47,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:21:47,842 INFO L225 Difference]: With dead ends: 219 [2023-11-23 21:21:47,843 INFO L226 Difference]: Without dead ends: 135 [2023-11-23 21:21:47,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:21:47,856 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 168 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:21:47,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 240 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:21:47,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-11-23 21:21:47,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 132. [2023-11-23 21:21:47,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 90 states have (on average 1.3222222222222222) internal successors, (119), 95 states have internal predecessors, (119), 26 states have call successors, (26), 12 states have call predecessors, (26), 12 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-23 21:21:47,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 171 transitions. [2023-11-23 21:21:47,968 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 171 transitions. Word has length 32 [2023-11-23 21:21:47,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:21:47,969 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 171 transitions. [2023-11-23 21:21:47,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 21:21:47,970 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 171 transitions. [2023-11-23 21:21:47,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-23 21:21:47,974 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:21:47,974 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:21:47,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:21:47,976 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-23 21:21:47,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:21:47,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1723402418, now seen corresponding path program 1 times [2023-11-23 21:21:47,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:21:47,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474921171] [2023-11-23 21:21:47,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:21:47,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:21:48,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:21:48,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:21:48,351 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:21:48,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474921171] [2023-11-23 21:21:48,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474921171] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:21:48,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:21:48,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:21:48,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113994841] [2023-11-23 21:21:48,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:21:48,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:21:48,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:21:48,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:21:48,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:21:48,357 INFO L87 Difference]: Start difference. First operand 132 states and 171 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 21:21:48,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:21:48,843 INFO L93 Difference]: Finished difference Result 334 states and 428 transitions. [2023-11-23 21:21:48,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:21:48,844 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2023-11-23 21:21:48,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:21:48,855 INFO L225 Difference]: With dead ends: 334 [2023-11-23 21:21:48,855 INFO L226 Difference]: Without dead ends: 208 [2023-11-23 21:21:48,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:21:48,868 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 191 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:21:48,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 273 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:21:48,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-11-23 21:21:48,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 197. [2023-11-23 21:21:48,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 136 states have (on average 1.3014705882352942) internal successors, (177), 141 states have internal predecessors, (177), 37 states have call successors, (37), 20 states have call predecessors, (37), 20 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-23 21:21:48,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 251 transitions. [2023-11-23 21:21:48,931 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 251 transitions. Word has length 33 [2023-11-23 21:21:48,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:21:48,932 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 251 transitions. [2023-11-23 21:21:48,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 21:21:48,932 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 251 transitions. [2023-11-23 21:21:48,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-23 21:21:48,934 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:21:48,935 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:21:48,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:21:48,935 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-23 21:21:48,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:21:48,936 INFO L85 PathProgramCache]: Analyzing trace with hash -686108129, now seen corresponding path program 1 times [2023-11-23 21:21:48,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:21:48,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460624848] [2023-11-23 21:21:48,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:21:48,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:21:48,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:21:49,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:21:49,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:21:49,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460624848] [2023-11-23 21:21:49,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460624848] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:21:49,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:21:49,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:21:49,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44141048] [2023-11-23 21:21:49,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:21:49,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:21:49,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:21:49,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:21:49,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:21:49,007 INFO L87 Difference]: Start difference. First operand 197 states and 251 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-23 21:21:49,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:21:49,119 INFO L93 Difference]: Finished difference Result 553 states and 705 transitions. [2023-11-23 21:21:49,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:21:49,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 35 [2023-11-23 21:21:49,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:21:49,125 INFO L225 Difference]: With dead ends: 553 [2023-11-23 21:21:49,125 INFO L226 Difference]: Without dead ends: 361 [2023-11-23 21:21:49,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:21:49,128 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 70 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:21:49,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 174 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:21:49,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2023-11-23 21:21:49,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 356. [2023-11-23 21:21:49,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 249 states have (on average 1.248995983935743) internal successors, (311), 255 states have internal predecessors, (311), 65 states have call successors, (65), 38 states have call predecessors, (65), 38 states have return successors, (65), 63 states have call predecessors, (65), 65 states have call successors, (65) [2023-11-23 21:21:49,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 441 transitions. [2023-11-23 21:21:49,189 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 441 transitions. Word has length 35 [2023-11-23 21:21:49,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:21:49,189 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 441 transitions. [2023-11-23 21:21:49,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-23 21:21:49,190 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 441 transitions. [2023-11-23 21:21:49,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-23 21:21:49,193 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:21:49,193 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:21:49,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:21:49,194 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-23 21:21:49,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:21:49,195 INFO L85 PathProgramCache]: Analyzing trace with hash 926294385, now seen corresponding path program 1 times [2023-11-23 21:21:49,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:21:49,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107164010] [2023-11-23 21:21:49,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:21:49,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:21:49,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:21:49,296 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:21:49,296 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:21:49,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107164010] [2023-11-23 21:21:49,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107164010] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:21:49,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:21:49,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:21:49,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089541980] [2023-11-23 21:21:49,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:21:49,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:21:49,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:21:49,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:21:49,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:21:49,300 INFO L87 Difference]: Start difference. First operand 356 states and 441 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 21:21:49,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:21:49,410 INFO L93 Difference]: Finished difference Result 656 states and 819 transitions. [2023-11-23 21:21:49,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:21:49,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 49 [2023-11-23 21:21:49,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:21:49,417 INFO L225 Difference]: With dead ends: 656 [2023-11-23 21:21:49,417 INFO L226 Difference]: Without dead ends: 465 [2023-11-23 21:21:49,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:21:49,428 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 43 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:21:49,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 210 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:21:49,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2023-11-23 21:21:49,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 387. [2023-11-23 21:21:49,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 274 states have (on average 1.2481751824817517) internal successors, (342), 280 states have internal predecessors, (342), 68 states have call successors, (68), 41 states have call predecessors, (68), 41 states have return successors, (68), 66 states have call predecessors, (68), 68 states have call successors, (68) [2023-11-23 21:21:49,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 478 transitions. [2023-11-23 21:21:49,498 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 478 transitions. Word has length 49 [2023-11-23 21:21:49,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:21:49,499 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 478 transitions. [2023-11-23 21:21:49,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 21:21:49,499 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 478 transitions. [2023-11-23 21:21:49,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-23 21:21:49,502 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:21:49,503 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:21:49,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:21:49,503 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-23 21:21:49,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:21:49,504 INFO L85 PathProgramCache]: Analyzing trace with hash 169830596, now seen corresponding path program 1 times [2023-11-23 21:21:49,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:21:49,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839382179] [2023-11-23 21:21:49,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:21:49,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:21:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:21:50,013 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-23 21:21:50,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:21:50,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839382179] [2023-11-23 21:21:50,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839382179] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:21:50,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:21:50,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:21:50,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911097881] [2023-11-23 21:21:50,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:21:50,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:21:50,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:21:50,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:21:50,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:21:50,021 INFO L87 Difference]: Start difference. First operand 387 states and 478 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-23 21:21:50,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:21:50,428 INFO L93 Difference]: Finished difference Result 944 states and 1163 transitions. [2023-11-23 21:21:50,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:21:50,429 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 58 [2023-11-23 21:21:50,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:21:50,435 INFO L225 Difference]: With dead ends: 944 [2023-11-23 21:21:50,435 INFO L226 Difference]: Without dead ends: 563 [2023-11-23 21:21:50,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:21:50,438 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 191 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:21:50,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 255 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:21:50,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2023-11-23 21:21:50,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 541. [2023-11-23 21:21:50,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 382 states have (on average 1.2303664921465969) internal successors, (470), 389 states have internal predecessors, (470), 96 states have call successors, (96), 59 states have call predecessors, (96), 59 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-23 21:21:50,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 662 transitions. [2023-11-23 21:21:50,528 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 662 transitions. Word has length 58 [2023-11-23 21:21:50,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:21:50,528 INFO L495 AbstractCegarLoop]: Abstraction has 541 states and 662 transitions. [2023-11-23 21:21:50,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-23 21:21:50,529 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 662 transitions. [2023-11-23 21:21:50,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-23 21:21:50,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:21:50,532 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:21:50,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:21:50,532 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-23 21:21:50,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:21:50,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1967629932, now seen corresponding path program 1 times [2023-11-23 21:21:50,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:21:50,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284185100] [2023-11-23 21:21:50,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:21:50,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:21:50,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:21:50,637 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-23 21:21:50,637 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:21:50,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284185100] [2023-11-23 21:21:50,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284185100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:21:50,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:21:50,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:21:50,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262656713] [2023-11-23 21:21:50,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:21:50,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:21:50,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:21:50,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:21:50,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:21:50,641 INFO L87 Difference]: Start difference. First operand 541 states and 662 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 21:21:50,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:21:50,780 INFO L93 Difference]: Finished difference Result 973 states and 1196 transitions. [2023-11-23 21:21:50,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:21:50,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 60 [2023-11-23 21:21:50,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:21:50,787 INFO L225 Difference]: With dead ends: 973 [2023-11-23 21:21:50,787 INFO L226 Difference]: Without dead ends: 630 [2023-11-23 21:21:50,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:21:50,790 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 31 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:21:50,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 194 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:21:50,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2023-11-23 21:21:50,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 582. [2023-11-23 21:21:50,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 415 states have (on average 1.2337349397590363) internal successors, (512), 422 states have internal predecessors, (512), 100 states have call successors, (100), 63 states have call predecessors, (100), 63 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2023-11-23 21:21:50,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 712 transitions. [2023-11-23 21:21:50,927 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 712 transitions. Word has length 60 [2023-11-23 21:21:50,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:21:50,927 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 712 transitions. [2023-11-23 21:21:50,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 21:21:50,928 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 712 transitions. [2023-11-23 21:21:50,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-23 21:21:50,930 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:21:50,930 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:21:50,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:21:50,931 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-23 21:21:50,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:21:50,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1609057223, now seen corresponding path program 1 times [2023-11-23 21:21:50,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:21:50,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737343898] [2023-11-23 21:21:50,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:21:50,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:21:50,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:21:51,012 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-23 21:21:51,013 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:21:51,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737343898] [2023-11-23 21:21:51,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737343898] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:21:51,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:21:51,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:21:51,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909984330] [2023-11-23 21:21:51,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:21:51,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:21:51,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:21:51,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:21:51,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:21:51,017 INFO L87 Difference]: Start difference. First operand 582 states and 712 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 21:21:51,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:21:51,278 INFO L93 Difference]: Finished difference Result 993 states and 1242 transitions. [2023-11-23 21:21:51,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:21:51,278 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 65 [2023-11-23 21:21:51,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:21:51,285 INFO L225 Difference]: With dead ends: 993 [2023-11-23 21:21:51,285 INFO L226 Difference]: Without dead ends: 587 [2023-11-23 21:21:51,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:21:51,288 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 156 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:21:51,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 234 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:21:51,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2023-11-23 21:21:51,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 580. [2023-11-23 21:21:51,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 413 states have (on average 1.1961259079903148) internal successors, (494), 420 states have internal predecessors, (494), 100 states have call successors, (100), 63 states have call predecessors, (100), 63 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2023-11-23 21:21:51,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 694 transitions. [2023-11-23 21:21:51,406 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 694 transitions. Word has length 65 [2023-11-23 21:21:51,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:21:51,407 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 694 transitions. [2023-11-23 21:21:51,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 21:21:51,408 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 694 transitions. [2023-11-23 21:21:51,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-23 21:21:51,410 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:21:51,411 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:21:51,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 21:21:51,411 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-23 21:21:51,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:21:51,412 INFO L85 PathProgramCache]: Analyzing trace with hash -604696102, now seen corresponding path program 1 times [2023-11-23 21:21:51,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:21:51,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003628227] [2023-11-23 21:21:51,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:21:51,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:21:51,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:21:51,497 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-23 21:21:51,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:21:51,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003628227] [2023-11-23 21:21:51,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003628227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:21:51,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:21:51,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:21:51,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458830586] [2023-11-23 21:21:51,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:21:51,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:21:51,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:21:51,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:21:51,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:21:51,500 INFO L87 Difference]: Start difference. First operand 580 states and 694 transitions. Second operand has 3 states, 2 states have (on average 19.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 21:21:51,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:21:51,623 INFO L93 Difference]: Finished difference Result 580 states and 694 transitions. [2023-11-23 21:21:51,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:21:51,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 19.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2023-11-23 21:21:51,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:21:51,628 INFO L225 Difference]: With dead ends: 580 [2023-11-23 21:21:51,628 INFO L226 Difference]: Without dead ends: 579 [2023-11-23 21:21:51,629 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 [2023-11-23 21:21:51,630 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 87 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:21:51,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 81 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:21:51,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2023-11-23 21:21:51,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2023-11-23 21:21:51,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 413 states have (on average 1.188861985472155) internal successors, (491), 419 states have internal predecessors, (491), 100 states have call successors, (100), 63 states have call predecessors, (100), 63 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2023-11-23 21:21:51,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 691 transitions. [2023-11-23 21:21:51,784 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 691 transitions. Word has length 65 [2023-11-23 21:21:51,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:21:51,785 INFO L495 AbstractCegarLoop]: Abstraction has 579 states and 691 transitions. [2023-11-23 21:21:51,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 19.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 21:21:51,785 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 691 transitions. [2023-11-23 21:21:51,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-23 21:21:51,787 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:21:51,787 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:21:51,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 21:21:51,788 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-23 21:21:51,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:21:51,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1565709667, now seen corresponding path program 1 times [2023-11-23 21:21:51,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:21:51,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846289099] [2023-11-23 21:21:51,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:21:51,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:21:51,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:21:51,814 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:21:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:21:51,874 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:21:51,874 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:21:51,876 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2023-11-23 21:21:51,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2023-11-23 21:21:51,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2023-11-23 21:21:51,880 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2023-11-23 21:21:51,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 21:21:51,885 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:21:51,891 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:21:51,957 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret6 could not be translated [2023-11-23 21:21:51,967 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret6 could not be translated [2023-11-23 21:21:52,026 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:21:52 BoogieIcfgContainer [2023-11-23 21:21:52,026 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:21:52,027 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:21:52,027 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:21:52,027 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:21:52,028 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:21:46" (3/4) ... [2023-11-23 21:21:52,029 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-23 21:21:52,073 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret6 could not be translated [2023-11-23 21:21:52,075 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret6 could not be translated [2023-11-23 21:21:52,197 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ef543-bf2f-44b4-a52b-0b3d630e2422/bin/utaipan-verify-mE87zJ7Ire/witness.graphml [2023-11-23 21:21:52,198 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:21:52,199 INFO L158 Benchmark]: Toolchain (without parser) took 6639.50ms. Allocated memory was 226.5MB in the beginning and 283.1MB in the end (delta: 56.6MB). Free memory was 195.8MB in the beginning and 215.8MB in the end (delta: -20.0MB). Peak memory consumption was 38.7MB. Max. memory is 16.1GB. [2023-11-23 21:21:52,199 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 113.2MB. Free memory is still 66.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:21:52,200 INFO L158 Benchmark]: CACSL2BoogieTranslator took 340.50ms. Allocated memory is still 226.5MB. Free memory was 194.9MB in the beginning and 182.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 21:21:52,200 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.16ms. Allocated memory is still 226.5MB. Free memory was 182.3MB in the beginning and 180.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:21:52,203 INFO L158 Benchmark]: Boogie Preprocessor took 46.62ms. Allocated memory is still 226.5MB. Free memory was 180.2MB in the beginning and 178.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:21:52,203 INFO L158 Benchmark]: RCFGBuilder took 759.47ms. Allocated memory is still 226.5MB. Free memory was 178.1MB in the beginning and 146.7MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2023-11-23 21:21:52,204 INFO L158 Benchmark]: TraceAbstraction took 5266.70ms. Allocated memory was 226.5MB in the beginning and 283.1MB in the end (delta: 56.6MB). Free memory was 145.8MB in the beginning and 222.1MB in the end (delta: -76.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:21:52,204 INFO L158 Benchmark]: Witness Printer took 171.30ms. Allocated memory is still 283.1MB. Free memory was 222.1MB in the beginning and 215.8MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-23 21:21:52,208 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 113.2MB. Free memory is still 66.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 340.50ms. Allocated memory is still 226.5MB. Free memory was 194.9MB in the beginning and 182.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.16ms. Allocated memory is still 226.5MB. Free memory was 182.3MB in the beginning and 180.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.62ms. Allocated memory is still 226.5MB. Free memory was 180.2MB in the beginning and 178.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 759.47ms. Allocated memory is still 226.5MB. Free memory was 178.1MB in the beginning and 146.7MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * TraceAbstraction took 5266.70ms. Allocated memory was 226.5MB in the beginning and 283.1MB in the end (delta: 56.6MB). Free memory was 145.8MB in the beginning and 222.1MB in the end (delta: -76.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 171.30ms. Allocated memory is still 283.1MB. Free memory was 222.1MB in the beginning and 215.8MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret6 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret6 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 119]: integer overflow possible integer overflow possible We found a FailurePath: [L24] int m_pc = 0; [L25] int t1_pc = 0; [L26] int m_st ; [L27] int t1_st ; [L28] int m_i ; [L29] int t1_i ; [L30] int M_E = 2; [L31] int T1_E = 2; [L32] int E_M = 2; [L33] int E_1 = 2; [L37] int token ; [L39] int local ; [L485] int __retres1 ; [L489] CALL init_model() [L400] m_i = 1 [L401] t1_i = 1 [L489] RET init_model() [L490] CALL start_simulation() [L426] int kernel_st ; [L427] int tmp ; [L428] int tmp___0 ; [L432] kernel_st = 0 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, kernel_st=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L433] FCALL update_channels() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, kernel_st=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L434] CALL init_threads() [L182] COND TRUE m_i == 1 [L183] m_st = 0 [L187] COND TRUE t1_i == 1 [L188] t1_st = 0 [L434] RET init_threads() [L435] CALL fire_delta_events() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, \old(E_1)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L271] COND FALSE !(M_E == 0) [L276] COND FALSE !(T1_E == 0) [L281] COND FALSE !(E_M == 0) [L286] COND FALSE !(E_1 == 0) [L435] RET fire_delta_events() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, kernel_st=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L436] CALL activate_threads() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, \old(m_st)=0, \old(t1_st)=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L324] int tmp ; [L325] int tmp___0 ; [L329] CALL, EXPR is_master_triggered() [L133] int __retres1 ; VAL [E_1=2, E_M=2, M_E=2, T1_E=2, \old(m_st)=0, \old(t1_st)=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L136] COND FALSE !(m_pc == 1) VAL [E_1=2, E_M=2, M_E=2, T1_E=2, \old(m_st)=0, \old(t1_st)=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L146] __retres1 = 0 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, \old(m_st)=0, \old(t1_st)=0, __retres1=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L148] return (__retres1); [L329] RET, EXPR is_master_triggered() [L329] tmp = is_master_triggered() [L331] COND FALSE !(\read(tmp)) [L337] CALL, EXPR is_transmit1_triggered() [L152] int __retres1 ; VAL [E_1=2, E_M=2, M_E=2, T1_E=2, \old(m_st)=0, \old(t1_st)=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L155] COND FALSE !(t1_pc == 1) VAL [E_1=2, E_M=2, M_E=2, T1_E=2, \old(m_st)=0, \old(t1_st)=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L165] __retres1 = 0 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, \old(m_st)=0, \old(t1_st)=0, __retres1=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L167] return (__retres1); [L337] RET, EXPR is_transmit1_triggered() [L337] tmp___0 = is_transmit1_triggered() [L339] COND FALSE !(\read(tmp___0)) [L436] RET activate_threads() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, kernel_st=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L437] CALL reset_delta_events() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, \old(E_1)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L299] COND FALSE !(M_E == 1) [L304] COND FALSE !(T1_E == 1) [L309] COND FALSE !(E_M == 1) [L314] COND FALSE !(E_1 == 1) [L437] RET reset_delta_events() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, kernel_st=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L440] COND TRUE 1 [L443] kernel_st = 1 [L444] CALL eval() [L218] int tmp ; VAL [E_1=2, E_M=2, M_E=2, T1_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L222] COND TRUE 1 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L225] CALL, EXPR exists_runnable_thread() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L197] int __retres1 ; [L200] COND TRUE m_st == 0 [L201] __retres1 = 1 [L213] return (__retres1); [L225] RET, EXPR exists_runnable_thread() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L225] tmp = exists_runnable_thread() [L227] COND TRUE \read(tmp) VAL [E_1=2, E_M=2, M_E=2, T1_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, tmp=1, token=0] [L232] COND TRUE m_st == 0 [L233] int tmp_ndt_1; [L234] EXPR tmp_ndt_1 = __VERIFIER_nondet_int() [L235] COND FALSE, EXPR !(\read(tmp_ndt_1)) VAL [E_1=2, E_M=2, M_E=2, T1_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, tmp=1, tmp_ndt_1=0, token=0] [L232-L243] { int tmp_ndt_1; tmp_ndt_1 = __VERIFIER_nondet_int(); if (tmp_ndt_1) { { m_st = 1; master(); } } else { } } VAL [E_1=2, E_M=2, M_E=2, T1_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, tmp=1, token=0] [L246] COND TRUE t1_st == 0 [L247] int tmp_ndt_2; [L248] EXPR tmp_ndt_2 = __VERIFIER_nondet_int() [L249] COND TRUE, EXPR \read(tmp_ndt_2) [L251] EXPR t1_st = 1 [L252] CALL, EXPR transmit1() [L100] COND TRUE t1_pc == 0 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=1, token=0] [L111] COND TRUE 1 [L113] t1_pc = 1 [L114] t1_st = 2 [L252] RET, EXPR transmit1() [L246-L257] { int tmp_ndt_2; tmp_ndt_2 = __VERIFIER_nondet_int(); if (tmp_ndt_2) { { t1_st = 1; transmit1(); } } else { } } VAL [E_1=2, E_M=2, M_E=2, T1_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, tmp=1, token=0] [L222] COND TRUE 1 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, tmp=1, token=0] [L225] CALL, EXPR exists_runnable_thread() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, token=0] [L197] int __retres1 ; [L200] COND TRUE m_st == 0 [L201] __retres1 = 1 [L213] return (__retres1); [L225] RET, EXPR exists_runnable_thread() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, tmp=1, token=0] [L225] tmp = exists_runnable_thread() [L227] COND TRUE \read(tmp) VAL [E_1=2, E_M=2, M_E=2, T1_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, tmp=1, token=0] [L232] COND TRUE m_st == 0 [L233] int tmp_ndt_1; [L234] EXPR tmp_ndt_1 = __VERIFIER_nondet_int() [L235] COND TRUE, EXPR \read(tmp_ndt_1) [L237] EXPR m_st = 1 [L238] CALL, EXPR master() [L42] int tmp_var = __VERIFIER_nondet_int(); [L44] COND TRUE m_pc == 0 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, tmp_var=0, token=0] [L55] COND TRUE 1 [L58] token = __VERIFIER_nondet_int() [L59] local = token [L60] E_1 = 1 VAL [E_1=1, E_M=2, M_E=2, T1_E=2, local=2147483647, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, tmp_var=0, token=2147483647] [L61] CALL immediate_notify() VAL [E_1=1, E_M=2, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, local=2147483647, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, token=2147483647] [L353] CALL activate_threads() VAL [E_1=1, E_M=2, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, local=2147483647, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, token=2147483647] [L324] int tmp ; [L325] int tmp___0 ; [L329] CALL, EXPR is_master_triggered() [L133] int __retres1 ; VAL [E_1=1, E_M=2, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, local=2147483647, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, token=2147483647] [L136] COND FALSE !(m_pc == 1) VAL [E_1=1, E_M=2, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, local=2147483647, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, token=2147483647] [L146] __retres1 = 0 VAL [E_1=1, E_M=2, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, __retres1=0, local=2147483647, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, token=2147483647] [L148] return (__retres1); [L329] RET, EXPR is_master_triggered() [L329] tmp = is_master_triggered() [L331] COND FALSE !(\read(tmp)) [L337] CALL, EXPR is_transmit1_triggered() [L152] int __retres1 ; VAL [E_1=1, E_M=2, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, local=2147483647, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, token=2147483647] [L155] COND TRUE t1_pc == 1 VAL [E_1=1, E_M=2, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, local=2147483647, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, token=2147483647] [L156] COND TRUE E_1 == 1 [L157] __retres1 = 1 VAL [E_1=1, E_M=2, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, __retres1=1, local=2147483647, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, token=2147483647] [L167] return (__retres1); [L337] RET, EXPR is_transmit1_triggered() [L337] tmp___0 = is_transmit1_triggered() [L339] COND TRUE \read(tmp___0) [L340] t1_st = 0 [L353] RET activate_threads() VAL [E_1=1, E_M=2, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, local=2147483647, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, token=2147483647] [L61] RET immediate_notify() VAL [E_1=1, E_M=2, M_E=2, T1_E=2, local=2147483647, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, tmp_var=0, token=2147483647] [L62] E_1 = 2 [L63] m_pc = 1 [L64] m_st = 2 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, local=2147483647, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=0, tmp_var=0, token=2147483647] [L238] RET, EXPR master() [L232-L243] { int tmp_ndt_1; tmp_ndt_1 = __VERIFIER_nondet_int(); if (tmp_ndt_1) { { m_st = 1; master(); } } else { } } VAL [E_1=2, E_M=2, M_E=2, T1_E=2, local=2147483647, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=0, tmp=1, token=2147483647] [L246] COND TRUE t1_st == 0 [L247] int tmp_ndt_2; [L248] tmp_ndt_2 = __VERIFIER_nondet_int() [L249] COND TRUE \read(tmp_ndt_2) [L251] t1_st = 1 [L252] CALL transmit1() [L100] COND FALSE !(t1_pc == 0) VAL [E_1=2, E_M=2, M_E=2, T1_E=2, local=2147483647, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, token=2147483647] [L103] COND TRUE t1_pc == 1 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, local=2147483647, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, token=2147483647] [L119] token += 1 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, local=2147483647, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, token=2147483647] - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 119]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 82 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 5.0s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 954 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 937 mSDsluCounter, 1661 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 765 mSDsCounter, 140 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 694 IncrementalHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 140 mSolverCounterUnsat, 896 mSDtfsCounter, 694 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=582occurred in iteration=6, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 8 MinimizatonAttempts, 174 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 463 NumberOfCodeBlocks, 463 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 389 ConstructedInterpolants, 0 QuantifiedInterpolants, 676 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 85/85 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-23 21:21:52,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ef543-bf2f-44b4-a52b-0b3d630e2422/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)