./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-match-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d964af8d-4afa-4b6b-bda2-f304087cb67b/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d964af8d-4afa-4b6b-bda2-f304087cb67b/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d964af8d-4afa-4b6b-bda2-f304087cb67b/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d964af8d-4afa-4b6b-bda2-f304087cb67b/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/chl-match-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d964af8d-4afa-4b6b-bda2-f304087cb67b/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d964af8d-4afa-4b6b-bda2-f304087cb67b/bin/utaipan-verify-YMUCfTKeje --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 2c931aeff3bd4feb775048ea000220a43a3b08d8a3667f51cb57a0babc9201aa --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:51:39,168 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:51:39,245 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d964af8d-4afa-4b6b-bda2-f304087cb67b/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Overflow-32bit-Taipan_Default.epf [2024-11-09 05:51:39,252 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:51:39,252 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:51:39,292 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:51:39,292 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:51:39,293 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:51:39,293 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:51:39,294 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:51:39,294 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:51:39,299 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:51:39,300 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:51:39,300 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:51:39,300 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:51:39,301 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:51:39,301 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:51:39,305 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:51:39,306 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:51:39,306 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:51:39,307 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:51:39,314 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:51:39,315 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:51:39,315 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:51:39,316 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:51:39,316 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:51:39,317 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:51:39,317 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:51:39,317 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:51:39,321 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:51:39,322 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:51:39,336 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:51:39,336 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 05:51:39,337 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 05:51:39,337 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:51:39,337 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:51:39,338 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:51:39,338 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:51:39,339 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:51:39,339 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:51:39,340 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:51:39,340 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:51:39,341 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:51:39,341 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:51:39,341 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:51:39,342 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:51:39,342 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:51:39,342 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:51:39,343 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:51:39,343 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_d964af8d-4afa-4b6b-bda2-f304087cb67b/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d964af8d-4afa-4b6b-bda2-f304087cb67b/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c931aeff3bd4feb775048ea000220a43a3b08d8a3667f51cb57a0babc9201aa [2024-11-09 05:51:39,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:51:39,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:51:39,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:51:39,636 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:51:39,637 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:51:39,638 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d964af8d-4afa-4b6b-bda2-f304087cb67b/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/weaver/chl-match-subst.wvr.c Unable to find full path for "g++" [2024-11-09 05:51:41,733 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:51:41,965 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:51:41,966 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d964af8d-4afa-4b6b-bda2-f304087cb67b/sv-benchmarks/c/weaver/chl-match-subst.wvr.c [2024-11-09 05:51:41,975 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d964af8d-4afa-4b6b-bda2-f304087cb67b/bin/utaipan-verify-YMUCfTKeje/data/2a593a7ac/d9ea614b28524ff8bb6d7e32cb379841/FLAGa004b7ab4 [2024-11-09 05:51:41,988 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d964af8d-4afa-4b6b-bda2-f304087cb67b/bin/utaipan-verify-YMUCfTKeje/data/2a593a7ac/d9ea614b28524ff8bb6d7e32cb379841 [2024-11-09 05:51:41,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:51:41,992 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:51:41,993 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:51:41,993 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:51:41,998 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:51:41,999 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:51:41" (1/1) ... [2024-11-09 05:51:42,000 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d3530c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:51:42, skipping insertion in model container [2024-11-09 05:51:42,000 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:51:41" (1/1) ... [2024-11-09 05:51:42,028 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:51:42,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:51:42,293 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:51:42,329 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:51:42,346 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:51:42,346 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:51:42 WrapperNode [2024-11-09 05:51:42,346 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:51:42,347 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:51:42,347 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:51:42,348 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:51:42,355 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:51:42" (1/1) ... [2024-11-09 05:51:42,362 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:51:42" (1/1) ... [2024-11-09 05:51:42,414 INFO L138 Inliner]: procedures = 22, calls = 20, calls flagged for inlining = 13, calls inlined = 23, statements flattened = 285 [2024-11-09 05:51:42,419 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:51:42,420 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:51:42,420 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:51:42,420 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:51:42,433 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:51:42" (1/1) ... [2024-11-09 05:51:42,433 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:51:42" (1/1) ... [2024-11-09 05:51:42,438 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:51:42" (1/1) ... [2024-11-09 05:51:42,442 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:51:42" (1/1) ... [2024-11-09 05:51:42,453 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:51:42" (1/1) ... [2024-11-09 05:51:42,455 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:51:42" (1/1) ... [2024-11-09 05:51:42,461 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:51:42" (1/1) ... [2024-11-09 05:51:42,463 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:51:42" (1/1) ... [2024-11-09 05:51:42,469 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:51:42,470 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:51:42,475 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:51:42,475 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:51:42,479 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:51:42" (1/1) ... [2024-11-09 05:51:42,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:51:42,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d964af8d-4afa-4b6b-bda2-f304087cb67b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:51:42,532 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d964af8d-4afa-4b6b-bda2-f304087cb67b/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:51:42,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d964af8d-4afa-4b6b-bda2-f304087cb67b/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:51:42,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:51:42,577 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 05:51:42,577 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 05:51:42,577 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 05:51:42,578 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 05:51:42,579 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 05:51:42,580 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 05:51:42,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:51:42,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:51:42,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:51:42,582 WARN L207 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 05:51:42,731 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:51:42,735 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:51:43,437 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 05:51:43,437 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:51:43,797 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:51:43,797 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 05:51:43,798 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:51:43 BoogieIcfgContainer [2024-11-09 05:51:43,798 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:51:43,804 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:51:43,804 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:51:43,808 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:51:43,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:51:41" (1/3) ... [2024-11-09 05:51:43,810 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6396d91b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:51:43, skipping insertion in model container [2024-11-09 05:51:43,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:51:42" (2/3) ... [2024-11-09 05:51:43,811 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6396d91b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:51:43, skipping insertion in model container [2024-11-09 05:51:43,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:51:43" (3/3) ... [2024-11-09 05:51:43,813 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-subst.wvr.c [2024-11-09 05:51:43,833 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:51:43,833 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2024-11-09 05:51:43,834 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 05:51:43,955 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 05:51:43,997 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 123 places, 125 transitions, 271 flow [2024-11-09 05:51:47,493 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 82176 states, 79980 states have (on average 3.84039759939985) internal successors, (307155), 82175 states have internal predecessors, (307155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:51:47,556 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:51:47,578 INFO L333 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, 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;@161b63e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:51:47,578 INFO L334 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2024-11-09 05:51:47,728 INFO L276 IsEmpty]: Start isEmpty. Operand has 82176 states, 79980 states have (on average 3.84039759939985) internal successors, (307155), 82175 states have internal predecessors, (307155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:51:47,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-09 05:51:47,734 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:51:47,735 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 05:51:47,735 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-11-09 05:51:47,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:51:47,741 INFO L85 PathProgramCache]: Analyzing trace with hash 838780535, now seen corresponding path program 1 times [2024-11-09 05:51:47,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:51:47,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121683384] [2024-11-09 05:51:47,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:51:47,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:51:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:51:48,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:51:48,035 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:51:48,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121683384] [2024-11-09 05:51:48,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121683384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:51:48,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:51:48,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:51:48,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981675787] [2024-11-09 05:51:48,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:51:48,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:51:48,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:51:48,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:51:48,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:51:48,190 INFO L87 Difference]: Start difference. First operand has 82176 states, 79980 states have (on average 3.84039759939985) internal successors, (307155), 82175 states have internal predecessors, (307155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:51:51,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:51:51,894 INFO L93 Difference]: Finished difference Result 178642 states and 676118 transitions. [2024-11-09 05:51:51,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:51:51,896 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-09 05:51:51,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:51:53,647 INFO L225 Difference]: With dead ends: 178642 [2024-11-09 05:51:53,648 INFO L226 Difference]: Without dead ends: 120288 [2024-11-09 05:51:53,797 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:51:53,801 INFO L432 NwaCegarLoop]: 176 mSDtfsCounter, 205 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:51:53,804 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 284 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:51:54,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120288 states. [2024-11-09 05:51:58,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120288 to 96468. [2024-11-09 05:51:58,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96468 states, 94610 states have (on average 3.8495190783215305) internal successors, (364203), 96467 states have internal predecessors, (364203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:52:00,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96468 states to 96468 states and 364203 transitions. [2024-11-09 05:52:00,270 INFO L78 Accepts]: Start accepts. Automaton has 96468 states and 364203 transitions. Word has length 5 [2024-11-09 05:52:00,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:52:00,271 INFO L471 AbstractCegarLoop]: Abstraction has 96468 states and 364203 transitions. [2024-11-09 05:52:00,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:52:00,272 INFO L276 IsEmpty]: Start isEmpty. Operand 96468 states and 364203 transitions. [2024-11-09 05:52:00,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-09 05:52:00,273 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:52:00,273 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 05:52:00,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:52:00,274 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-11-09 05:52:00,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:52:00,275 INFO L85 PathProgramCache]: Analyzing trace with hash 232393793, now seen corresponding path program 1 times [2024-11-09 05:52:00,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:52:00,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317682600] [2024-11-09 05:52:00,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:52:00,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:52:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:52:00,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:52:00,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:52:00,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317682600] [2024-11-09 05:52:00,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317682600] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:52:00,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:52:00,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:52:00,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684550008] [2024-11-09 05:52:00,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:52:00,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:52:00,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:52:00,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:52:00,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:52:00,392 INFO L87 Difference]: Start difference. First operand 96468 states and 364203 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:52:03,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:52:03,063 INFO L93 Difference]: Finished difference Result 108378 states and 407771 transitions. [2024-11-09 05:52:03,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:52:03,069 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-09 05:52:03,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:52:04,074 INFO L225 Difference]: With dead ends: 108378 [2024-11-09 05:52:04,074 INFO L226 Difference]: Without dead ends: 105996 [2024-11-09 05:52:04,116 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:52:04,117 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 211 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:52:04,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 176 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:52:04,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105996 states. [2024-11-09 05:52:07,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105996 to 94086. [2024-11-09 05:52:07,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94086 states, 92397 states have (on average 3.847408465642824) internal successors, (355489), 94085 states have internal predecessors, (355489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:52:08,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94086 states to 94086 states and 355489 transitions. [2024-11-09 05:52:08,776 INFO L78 Accepts]: Start accepts. Automaton has 94086 states and 355489 transitions. Word has length 6 [2024-11-09 05:52:08,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:52:08,776 INFO L471 AbstractCegarLoop]: Abstraction has 94086 states and 355489 transitions. [2024-11-09 05:52:08,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:52:08,777 INFO L276 IsEmpty]: Start isEmpty. Operand 94086 states and 355489 transitions. [2024-11-09 05:52:08,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 05:52:08,778 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:52:08,778 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:52:08,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 05:52:08,779 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-11-09 05:52:08,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:52:08,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1385757797, now seen corresponding path program 1 times [2024-11-09 05:52:08,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:52:08,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199654085] [2024-11-09 05:52:08,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:52:08,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:52:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:52:08,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:52:08,858 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:52:08,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199654085] [2024-11-09 05:52:08,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199654085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:52:08,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:52:08,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:52:08,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160659498] [2024-11-09 05:52:08,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:52:08,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:52:08,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:52:08,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:52:08,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:52:08,861 INFO L87 Difference]: Start difference. First operand 94086 states and 355489 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:52:09,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:52:09,924 INFO L93 Difference]: Finished difference Result 94086 states and 355489 transitions. [2024-11-09 05:52:09,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:52:09,925 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-09 05:52:09,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:52:11,881 INFO L225 Difference]: With dead ends: 94086 [2024-11-09 05:52:11,882 INFO L226 Difference]: Without dead ends: 91704 [2024-11-09 05:52:11,910 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:52:11,912 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 204 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:52:11,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 176 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:52:12,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91704 states. [2024-11-09 05:52:14,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91704 to 91704. [2024-11-09 05:52:14,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91704 states, 90184 states have (on average 3.84519426949348) internal successors, (346775), 91703 states have internal predecessors, (346775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:52:15,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91704 states to 91704 states and 346775 transitions. [2024-11-09 05:52:15,459 INFO L78 Accepts]: Start accepts. Automaton has 91704 states and 346775 transitions. Word has length 7 [2024-11-09 05:52:15,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:52:15,460 INFO L471 AbstractCegarLoop]: Abstraction has 91704 states and 346775 transitions. [2024-11-09 05:52:15,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:52:15,460 INFO L276 IsEmpty]: Start isEmpty. Operand 91704 states and 346775 transitions. [2024-11-09 05:52:15,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 05:52:15,461 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:52:15,461 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:52:15,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 05:52:15,461 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-11-09 05:52:15,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:52:15,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1449834333, now seen corresponding path program 1 times [2024-11-09 05:52:15,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:52:15,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841485016] [2024-11-09 05:52:15,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:52:15,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:52:15,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:52:15,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:52:15,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:52:15,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841485016] [2024-11-09 05:52:15,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841485016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:52:15,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:52:15,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:52:15,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638657751] [2024-11-09 05:52:15,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:52:15,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:52:15,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:52:15,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:52:15,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:52:15,541 INFO L87 Difference]: Start difference. First operand 91704 states and 346775 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:52:18,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:52:18,225 INFO L93 Difference]: Finished difference Result 199494 states and 763889 transitions. [2024-11-09 05:52:18,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:52:18,226 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-09 05:52:18,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:52:19,221 INFO L225 Difference]: With dead ends: 199494 [2024-11-09 05:52:19,221 INFO L226 Difference]: Without dead ends: 134808 [2024-11-09 05:52:20,173 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:52:20,174 INFO L432 NwaCegarLoop]: 164 mSDtfsCounter, 195 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:52:20,174 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 264 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:52:20,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134808 states. [2024-11-09 05:52:22,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134808 to 107868. [2024-11-09 05:52:23,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107868 states, 106582 states have (on average 3.8645643729710457) internal successors, (411893), 107867 states have internal predecessors, (411893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:52:24,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107868 states to 107868 states and 411893 transitions. [2024-11-09 05:52:24,501 INFO L78 Accepts]: Start accepts. Automaton has 107868 states and 411893 transitions. Word has length 7 [2024-11-09 05:52:24,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:52:24,502 INFO L471 AbstractCegarLoop]: Abstraction has 107868 states and 411893 transitions. [2024-11-09 05:52:24,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:52:24,502 INFO L276 IsEmpty]: Start isEmpty. Operand 107868 states and 411893 transitions. [2024-11-09 05:52:24,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 05:52:24,503 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:52:24,503 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:52:24,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 05:52:24,503 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-11-09 05:52:24,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:52:24,504 INFO L85 PathProgramCache]: Analyzing trace with hash -8818781, now seen corresponding path program 1 times [2024-11-09 05:52:24,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:52:24,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608926146] [2024-11-09 05:52:24,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:52:24,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:52:24,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:52:24,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:52:24,597 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:52:24,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608926146] [2024-11-09 05:52:24,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608926146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:52:24,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:52:24,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:52:24,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689558318] [2024-11-09 05:52:24,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:52:24,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:52:24,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:52:24,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:52:24,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:52:24,599 INFO L87 Difference]: Start difference. First operand 107868 states and 411893 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:52:26,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:52:26,545 INFO L93 Difference]: Finished difference Result 119076 states and 450507 transitions. [2024-11-09 05:52:26,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:52:26,545 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-09 05:52:26,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:52:27,477 INFO L225 Difference]: With dead ends: 119076 [2024-11-09 05:52:27,478 INFO L226 Difference]: Without dead ends: 113472 [2024-11-09 05:52:27,520 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:52:27,521 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 282 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:52:27,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 319 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:52:27,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113472 states.