./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/mono-crafted_6.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/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_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/mono-crafted_6.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a0e1e4b700be1f29c3e51242b4a74b80feb10d65ba6788a48a42ab27b5c7017d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:50:49,036 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:50:49,116 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 05:50:49,124 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:50:49,126 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:50:49,160 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:50:49,162 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:50:49,163 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:50:49,164 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:50:49,166 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:50:49,169 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:50:49,170 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:50:49,170 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:50:49,171 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:50:49,171 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:50:49,171 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:50:49,171 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:50:49,172 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:50:49,172 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:50:49,172 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:50:49,172 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:50:49,175 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:50:49,176 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:50:49,176 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:50:49,176 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:50:49,177 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:50:49,177 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:50:49,177 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:50:49,177 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:50:49,177 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:50:49,178 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:50:49,178 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:50:49,178 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:50:49,179 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:50:49,179 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:50:49,179 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:50:49,180 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:50:49,181 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:50:49,181 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:50:49,181 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:50:49,181 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:50:49,182 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:50:49,182 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:50:49,182 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:50:49,182 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:50:49,182 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:50:49,183 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:50:49,183 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_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0e1e4b700be1f29c3e51242b4a74b80feb10d65ba6788a48a42ab27b5c7017d [2024-11-09 05:50:49,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:50:49,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:50:49,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:50:49,447 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:50:49,447 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:50:49,448 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/loops-crafted-1/mono-crafted_6.c Unable to find full path for "g++" [2024-11-09 05:50:51,413 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:50:51,579 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:50:51,580 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/sv-benchmarks/c/loops-crafted-1/mono-crafted_6.c [2024-11-09 05:50:51,587 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/data/84aeff5dc/f68685555a9c4b3f90e065660ccf8723/FLAG655e999bb [2024-11-09 05:50:51,605 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/data/84aeff5dc/f68685555a9c4b3f90e065660ccf8723 [2024-11-09 05:50:51,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:50:51,611 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:50:51,614 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:50:51,614 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:50:51,621 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:50:51,621 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:50:51" (1/1) ... [2024-11-09 05:50:51,623 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f5230ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:51, skipping insertion in model container [2024-11-09 05:50:51,623 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:50:51" (1/1) ... [2024-11-09 05:50:51,648 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:50:51,827 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/sv-benchmarks/c/loops-crafted-1/mono-crafted_6.c[318,331] [2024-11-09 05:50:51,845 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:50:51,861 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:50:51,874 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/sv-benchmarks/c/loops-crafted-1/mono-crafted_6.c[318,331] [2024-11-09 05:50:51,880 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:50:51,903 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:50:51,903 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:51 WrapperNode [2024-11-09 05:50:51,903 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:50:51,904 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:50:51,905 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:50:51,905 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:50:51,912 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:51" (1/1) ... [2024-11-09 05:50:51,921 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:51" (1/1) ... [2024-11-09 05:50:51,939 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2024-11-09 05:50:51,939 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:50:51,941 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:50:51,941 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:50:51,941 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:50:51,950 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:51" (1/1) ... [2024-11-09 05:50:51,951 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:51" (1/1) ... [2024-11-09 05:50:51,952 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:51" (1/1) ... [2024-11-09 05:50:51,953 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:51" (1/1) ... [2024-11-09 05:50:51,955 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:51" (1/1) ... [2024-11-09 05:50:51,961 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:51" (1/1) ... [2024-11-09 05:50:51,966 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:51" (1/1) ... [2024-11-09 05:50:51,966 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:51" (1/1) ... [2024-11-09 05:50:51,968 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:50:51,969 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:50:51,969 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:50:51,969 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:50:51,970 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:51" (1/1) ... [2024-11-09 05:50:51,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:50:51,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:50:52,006 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:50:52,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:50:52,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:50:52,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:50:52,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:50:52,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:50:52,120 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:50:52,122 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:50:52,287 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-09 05:50:52,287 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:50:52,354 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:50:52,357 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 05:50:52,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:50:52 BoogieIcfgContainer [2024-11-09 05:50:52,358 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:50:52,361 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:50:52,364 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:50:52,368 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:50:52,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:50:51" (1/3) ... [2024-11-09 05:50:52,371 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@385b0f4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:50:52, skipping insertion in model container [2024-11-09 05:50:52,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:51" (2/3) ... [2024-11-09 05:50:52,373 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@385b0f4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:50:52, skipping insertion in model container [2024-11-09 05:50:52,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:50:52" (3/3) ... [2024-11-09 05:50:52,375 INFO L112 eAbstractionObserver]: Analyzing ICFG mono-crafted_6.c [2024-11-09 05:50:52,395 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:50:52,396 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:50:52,468 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:50:52,478 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;@42cc8652, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:50:52,480 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:50:52,485 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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 05:50:52,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-09 05:50:52,492 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:50:52,493 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 05:50:52,494 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:50:52,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:50:52,502 INFO L85 PathProgramCache]: Analyzing trace with hash 69143022, now seen corresponding path program 1 times [2024-11-09 05:50:52,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:50:52,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188300364] [2024-11-09 05:50:52,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:50:52,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:50:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:50:52,709 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 05:50:52,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:50:52,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188300364] [2024-11-09 05:50:52,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188300364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:50:52,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:50:52,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:50:52,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874076429] [2024-11-09 05:50:52,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:50:52,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:50:52,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:50:52,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:50:52,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:50:52,744 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 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 05:50:52,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:50:52,778 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2024-11-09 05:50:52,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:50:52,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 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 05:50:52,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:50:52,788 INFO L225 Difference]: With dead ends: 17 [2024-11-09 05:50:52,788 INFO L226 Difference]: Without dead ends: 9 [2024-11-09 05:50:52,791 INFO L431 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 [2024-11-09 05:50:52,794 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:50:52,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 9 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:50:52,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2024-11-09 05:50:52,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2024-11-09 05:50:52,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 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 05:50:52,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2024-11-09 05:50:52,824 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 5 [2024-11-09 05:50:52,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:50:52,824 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2024-11-09 05:50:52,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 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 05:50:52,825 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2024-11-09 05:50:52,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 05:50:52,826 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:50:52,826 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:50:52,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:50:52,827 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:50:52,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:50:52,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1468592857, now seen corresponding path program 1 times [2024-11-09 05:50:52,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:50:52,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898427063] [2024-11-09 05:50:52,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:50:52,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:50:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:50:53,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:50:53,039 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:50:53,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898427063] [2024-11-09 05:50:53,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898427063] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:50:53,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206014799] [2024-11-09 05:50:53,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:50:53,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:50:53,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:50:53,042 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:50:53,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:50:53,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:50:53,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:50:53,109 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:50:53,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:50:53,157 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:50:53,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:50:53,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206014799] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:50:53,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [633045797] [2024-11-09 05:50:53,421 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 05:50:53,421 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:50:53,425 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:50:53,433 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:50:53,434 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:50:53,773 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:50:53,854 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '90#(<= 1 |#StackHeapBarrier|)' at error location [2024-11-09 05:50:53,855 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:50:53,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:50:53,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-09 05:50:53,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907157133] [2024-11-09 05:50:53,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:50:53,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 05:50:53,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:50:53,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 05:50:53,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-09 05:50:53,858 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 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 05:50:53,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:50:53,920 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2024-11-09 05:50:53,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:50:53,922 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 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 05:50:53,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:50:53,922 INFO L225 Difference]: With dead ends: 18 [2024-11-09 05:50:53,922 INFO L226 Difference]: Without dead ends: 14 [2024-11-09 05:50:53,923 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-09 05:50:53,924 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:50:53,925 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 10 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:50:53,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-11-09 05:50:53,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2024-11-09 05:50:53,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 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 05:50:53,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2024-11-09 05:50:53,932 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 7 [2024-11-09 05:50:53,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:50:53,933 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2024-11-09 05:50:53,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 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 05:50:53,933 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2024-11-09 05:50:53,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 05:50:53,934 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:50:53,934 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1] [2024-11-09 05:50:53,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 05:50:54,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:50:54,136 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:50:54,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:50:54,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1458967834, now seen corresponding path program 2 times [2024-11-09 05:50:54,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:50:54,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465741366] [2024-11-09 05:50:54,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:50:54,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:50:54,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:50:54,508 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:50:54,508 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:50:54,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465741366] [2024-11-09 05:50:54,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465741366] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:50:54,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979134082] [2024-11-09 05:50:54,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:50:54,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:50:54,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:50:54,512 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:50:54,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:50:54,582 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-09 05:50:54,582 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:50:54,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 05:50:54,589 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:50:54,643 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:50:54,644 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:50:55,109 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:50:55,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979134082] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:50:55,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [41794634] [2024-11-09 05:50:55,113 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 05:50:55,113 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:50:55,118 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:50:55,118 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:50:55,118 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:50:55,339 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:50:55,410 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '221#(<= 1 |#StackHeapBarrier|)' at error location [2024-11-09 05:50:55,411 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:50:55,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:50:55,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-09 05:50:55,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880881460] [2024-11-09 05:50:55,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:50:55,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 05:50:55,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:50:55,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 05:50:55,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2024-11-09 05:50:55,417 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 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 05:50:55,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:50:55,493 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2024-11-09 05:50:55,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 05:50:55,494 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 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 13 [2024-11-09 05:50:55,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:50:55,495 INFO L225 Difference]: With dead ends: 30 [2024-11-09 05:50:55,495 INFO L226 Difference]: Without dead ends: 26 [2024-11-09 05:50:55,496 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2024-11-09 05:50:55,497 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:50:55,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 16 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:50:55,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-09 05:50:55,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-09 05:50:55,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 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 05:50:55,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2024-11-09 05:50:55,507 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 13 [2024-11-09 05:50:55,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:50:55,509 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2024-11-09 05:50:55,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 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 05:50:55,509 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2024-11-09 05:50:55,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 05:50:55,510 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:50:55,510 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1] [2024-11-09 05:50:55,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 05:50:55,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:50:55,711 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:50:55,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:50:55,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1929016484, now seen corresponding path program 3 times [2024-11-09 05:50:55,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:50:55,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664211381] [2024-11-09 05:50:55,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:50:55,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:50:55,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:50:56,428 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:50:56,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:50:56,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664211381] [2024-11-09 05:50:56,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664211381] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:50:56,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724676079] [2024-11-09 05:50:56,429 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 05:50:56,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:50:56,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:50:56,431 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:50:56,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 05:50:56,499 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 05:50:56,499 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:50:56,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 05:50:56,510 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:50:56,587 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:50:56,588 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:50:57,624 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:50:57,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724676079] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:50:57,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1224188329] [2024-11-09 05:50:57,627 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 05:50:57,627 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:50:57,632 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:50:57,632 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:50:57,632 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:50:57,750 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:50:57,839 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '474#(<= 1 |#StackHeapBarrier|)' at error location [2024-11-09 05:50:57,839 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:50:57,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:50:57,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 14] total 26 [2024-11-09 05:50:57,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662461349] [2024-11-09 05:50:57,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:50:57,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-09 05:50:57,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:50:57,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-09 05:50:57,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=613, Unknown=0, NotChecked=0, Total=930 [2024-11-09 05:50:57,842 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 26 states have internal predecessors, (52), 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 05:50:57,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:50:57,991 INFO L93 Difference]: Finished difference Result 56 states and 67 transitions. [2024-11-09 05:50:57,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-09 05:50:57,992 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 26 states have internal predecessors, (52), 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 25 [2024-11-09 05:50:57,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:50:57,993 INFO L225 Difference]: With dead ends: 56 [2024-11-09 05:50:57,993 INFO L226 Difference]: Without dead ends: 50 [2024-11-09 05:50:57,994 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=317, Invalid=613, Unknown=0, NotChecked=0, Total=930 [2024-11-09 05:50:57,994 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:50:57,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 11 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:50:58,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-09 05:50:58,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-09 05:50:58,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.0204081632653061) internal successors, (50), 49 states have internal predecessors, (50), 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 05:50:58,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2024-11-09 05:50:58,009 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 25 [2024-11-09 05:50:58,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:50:58,010 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2024-11-09 05:50:58,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 26 states have internal predecessors, (52), 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 05:50:58,010 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2024-11-09 05:50:58,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 05:50:58,011 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:50:58,012 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1] [2024-11-09 05:50:58,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 05:50:58,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:50:58,212 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:50:58,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:50:58,213 INFO L85 PathProgramCache]: Analyzing trace with hash 408747744, now seen corresponding path program 4 times [2024-11-09 05:50:58,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:50:58,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149354152] [2024-11-09 05:50:58,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:50:58,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:50:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:51:00,387 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:51:00,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:51:00,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149354152] [2024-11-09 05:51:00,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149354152] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:51:00,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600572952] [2024-11-09 05:51:00,388 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 05:51:00,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:51:00,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:51:00,392 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:51:00,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 05:51:00,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:51:00,491 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 05:51:00,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:51:00,664 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:51:00,665 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:51:02,813 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:51:02,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600572952] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:51:02,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [85369725] [2024-11-09 05:51:02,815 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 05:51:02,815 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:51:02,816 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:51:02,816 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:51:02,816 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:51:02,928 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:51:03,042 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '970#(<= 1 |#StackHeapBarrier|)' at error location [2024-11-09 05:51:03,042 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:51:03,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:51:03,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24, 24] total 51 [2024-11-09 05:51:03,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431516547] [2024-11-09 05:51:03,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:51:03,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-09 05:51:03,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:51:03,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-09 05:51:03,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1243, Invalid=1837, Unknown=0, NotChecked=0, Total=3080 [2024-11-09 05:51:03,050 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 52 states, 52 states have (on average 1.9615384615384615) internal successors, (102), 51 states have internal predecessors, (102), 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 05:51:03,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:51:03,308 INFO L93 Difference]: Finished difference Result 102 states and 125 transitions. [2024-11-09 05:51:03,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-09 05:51:03,309 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.9615384615384615) internal successors, (102), 51 states have internal predecessors, (102), 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 49 [2024-11-09 05:51:03,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:51:03,311 INFO L225 Difference]: With dead ends: 102 [2024-11-09 05:51:03,311 INFO L226 Difference]: Without dead ends: 98 [2024-11-09 05:51:03,314 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1243, Invalid=1837, Unknown=0, NotChecked=0, Total=3080 [2024-11-09 05:51:03,315 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:51:03,315 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 16 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:51:03,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-09 05:51:03,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2024-11-09 05:51:03,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.0103092783505154) internal successors, (98), 97 states have internal predecessors, (98), 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 05:51:03,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2024-11-09 05:51:03,335 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 49 [2024-11-09 05:51:03,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:51:03,335 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2024-11-09 05:51:03,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.9615384615384615) internal successors, (102), 51 states have internal predecessors, (102), 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 05:51:03,337 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2024-11-09 05:51:03,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-09 05:51:03,340 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:51:03,340 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1] [2024-11-09 05:51:03,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 05:51:03,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:51:03,544 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:51:03,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:51:03,544 INFO L85 PathProgramCache]: Analyzing trace with hash 514589160, now seen corresponding path program 5 times [2024-11-09 05:51:03,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:51:03,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987855851] [2024-11-09 05:51:03,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:51:03,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:51:03,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:51:10,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:51:10,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:51:10,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987855851] [2024-11-09 05:51:10,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987855851] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:51:10,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631222599] [2024-11-09 05:51:10,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:51:10,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:51:10,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:51:10,558 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:51:10,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 05:51:10,797 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2024-11-09 05:51:10,797 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:51:10,800 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-09 05:51:10,816 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:51:11,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:51:11,269 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:51:15,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:51:15,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631222599] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:51:15,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [807890030] [2024-11-09 05:51:15,915 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 05:51:15,915 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:51:15,915 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:51:15,916 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:51:15,916 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:51:15,972 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:51:16,112 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1948#(<= 1 |#StackHeapBarrier|)' at error location [2024-11-09 05:51:16,112 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:51:16,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:51:16,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 48, 48] total 103 [2024-11-09 05:51:16,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510001529] [2024-11-09 05:51:16,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:51:16,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2024-11-09 05:51:16,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:51:16,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2024-11-09 05:51:16,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5169, Invalid=6387, Unknown=0, NotChecked=0, Total=11556 [2024-11-09 05:51:16,121 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand has 104 states, 104 states have (on average 1.9807692307692308) internal successors, (206), 103 states have internal predecessors, (206), 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 05:51:16,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:51:16,674 INFO L93 Difference]: Finished difference Result 206 states and 257 transitions. [2024-11-09 05:51:16,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2024-11-09 05:51:16,675 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 1.9807692307692308) internal successors, (206), 103 states have internal predecessors, (206), 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 97 [2024-11-09 05:51:16,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:51:16,681 INFO L225 Difference]: With dead ends: 206 [2024-11-09 05:51:16,681 INFO L226 Difference]: Without dead ends: 202 [2024-11-09 05:51:16,683 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 233 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1408 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=5169, Invalid=6387, Unknown=0, NotChecked=0, Total=11556 [2024-11-09 05:51:16,687 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:51:16,687 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 12 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:51:16,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-09 05:51:16,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2024-11-09 05:51:16,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 1.0049751243781095) internal successors, (202), 201 states have internal predecessors, (202), 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 05:51:16,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 202 transitions. [2024-11-09 05:51:16,710 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 202 transitions. Word has length 97 [2024-11-09 05:51:16,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:51:16,711 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 202 transitions. [2024-11-09 05:51:16,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 1.9807692307692308) internal successors, (206), 103 states have internal predecessors, (206), 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 05:51:16,711 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 202 transitions. [2024-11-09 05:51:16,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-09 05:51:16,714 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:51:16,714 INFO L215 NwaCegarLoop]: trace histogram [98, 98, 1, 1, 1, 1, 1] [2024-11-09 05:51:16,742 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 05:51:16,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:51:16,915 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:51:16,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:51:16,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1276126940, now seen corresponding path program 6 times [2024-11-09 05:51:16,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:51:16,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338358701] [2024-11-09 05:51:16,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:51:16,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:51:17,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:51:37,522 INFO L134 CoverageAnalysis]: Checked inductivity of 9604 backedges. 0 proven. 9604 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:51:37,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:51:37,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338358701] [2024-11-09 05:51:37,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338358701] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:51:37,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995260312] [2024-11-09 05:51:37,523 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 05:51:37,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:51:37,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:51:37,524 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:51:37,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 05:51:37,763 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 05:51:37,763 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:51:37,768 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-11-09 05:51:37,799 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:51:38,213 INFO L134 CoverageAnalysis]: Checked inductivity of 9604 backedges. 0 proven. 9604 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:51:38,214 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:51:53,486 INFO L134 CoverageAnalysis]: Checked inductivity of 9604 backedges. 0 proven. 9604 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:51:53,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995260312] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:51:53,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [365477759] [2024-11-09 05:51:53,488 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 05:51:53,488 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:51:53,489 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:51:53,489 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:51:53,489 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:51:53,567 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:51:53,816 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3959#(<= 1 |#StackHeapBarrier|)' at error location [2024-11-09 05:51:53,816 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:51:53,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:51:53,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100, 100] total 200 [2024-11-09 05:51:53,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140463710] [2024-11-09 05:51:53,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:51:53,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 201 states [2024-11-09 05:51:53,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:51:53,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2024-11-09 05:51:53,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20112, Invalid=21708, Unknown=0, NotChecked=0, Total=41820 [2024-11-09 05:51:53,835 INFO L87 Difference]: Start difference. First operand 202 states and 202 transitions. Second operand has 201 states, 201 states have (on average 2.0) internal successors, (402), 200 states have internal predecessors, (402), 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 05:51:55,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:51:55,110 INFO L93 Difference]: Finished difference Result 406 states and 505 transitions. [2024-11-09 05:51:55,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2024-11-09 05:51:55,111 INFO L78 Accepts]: Start accepts. Automaton has has 201 states, 201 states have (on average 2.0) internal successors, (402), 200 states have internal predecessors, (402), 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 201 [2024-11-09 05:51:55,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:51:55,114 INFO L225 Difference]: With dead ends: 406 [2024-11-09 05:51:55,114 INFO L226 Difference]: Without dead ends: 402 [2024-11-09 05:51:55,120 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 701 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1581 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=20112, Invalid=21708, Unknown=0, NotChecked=0, Total=41820 [2024-11-09 05:51:55,121 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 05:51:55,122 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 14 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 05:51:55,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2024-11-09 05:51:55,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 402. [2024-11-09 05:51:55,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 1.0024937655860349) internal successors, (402), 401 states have internal predecessors, (402), 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 05:51:55,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 402 transitions. [2024-11-09 05:51:55,149 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 402 transitions. Word has length 201 [2024-11-09 05:51:55,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:51:55,150 INFO L471 AbstractCegarLoop]: Abstraction has 402 states and 402 transitions. [2024-11-09 05:51:55,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 201 states, 201 states have (on average 2.0) internal successors, (402), 200 states have internal predecessors, (402), 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 05:51:55,151 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 402 transitions. [2024-11-09 05:51:55,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2024-11-09 05:51:55,162 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:51:55,162 INFO L215 NwaCegarLoop]: trace histogram [198, 198, 1, 1, 1, 1, 1] [2024-11-09 05:51:55,185 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 05:51:55,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:51:55,363 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:51:55,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:51:55,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1665549712, now seen corresponding path program 7 times [2024-11-09 05:51:55,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:51:55,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883602630] [2024-11-09 05:51:55,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:51:55,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:51:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:53:23,809 INFO L134 CoverageAnalysis]: Checked inductivity of 39204 backedges. 0 proven. 39204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:53:23,810 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:53:23,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883602630] [2024-11-09 05:53:23,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883602630] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:53:23,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521808433] [2024-11-09 05:53:23,810 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 05:53:23,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:53:23,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:53:23,813 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:53:23,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ecbe62-c629-4d2f-b8dc-7e39386fa9d7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 05:53:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:53:24,412 INFO L255 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 204 conjuncts are in the unsatisfiable core [2024-11-09 05:53:24,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:53:25,259 INFO L134 CoverageAnalysis]: Checked inductivity of 39204 backedges. 0 proven. 39204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:53:25,259 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:54:34,478 INFO L134 CoverageAnalysis]: Checked inductivity of 39204 backedges. 0 proven. 39204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:54:34,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521808433] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:54:34,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1249388670] [2024-11-09 05:54:34,481 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 05:54:34,481 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:54:34,481 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:54:34,482 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:54:34,482 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:54:34,552 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:54:35,421 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7973#(<= 1 |#StackHeapBarrier|)' at error location [2024-11-09 05:54:35,422 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:54:35,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:54:35,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [200, 200, 203] total 403 [2024-11-09 05:54:35,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681995501] [2024-11-09 05:54:35,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:54:35,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 404 states [2024-11-09 05:54:35,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:54:35,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 404 interpolants. [2024-11-09 05:54:35,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61116, Invalid=104940, Unknown=0, NotChecked=0, Total=166056 [2024-11-09 05:54:35,449 INFO L87 Difference]: Start difference. First operand 402 states and 402 transitions. Second operand has 404 states, 404 states have (on average 1.99009900990099) internal successors, (804), 403 states have internal predecessors, (804), 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 05:54:49,952 WARN L286 SmtUtils]: Spent 7.86s on a formula simplification that was a NOOP. DAG size: 1188 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:55:02,637 WARN L286 SmtUtils]: Spent 7.76s on a formula simplification that was a NOOP. DAG size: 1188 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:55:15,123 WARN L286 SmtUtils]: Spent 7.60s on a formula simplification that was a NOOP. DAG size: 1182 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:55:27,822 WARN L286 SmtUtils]: Spent 7.79s on a formula simplification that was a NOOP. DAG size: 1182 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:55:40,395 WARN L286 SmtUtils]: Spent 7.66s on a formula simplification that was a NOOP. DAG size: 1176 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:55:52,716 WARN L286 SmtUtils]: Spent 7.45s on a formula simplification that was a NOOP. DAG size: 1176 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:56:05,046 WARN L286 SmtUtils]: Spent 7.49s on a formula simplification that was a NOOP. DAG size: 1170 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:56:17,386 WARN L286 SmtUtils]: Spent 7.52s on a formula simplification that was a NOOP. DAG size: 1170 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:56:29,649 WARN L286 SmtUtils]: Spent 7.47s on a formula simplification that was a NOOP. DAG size: 1164 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:56:41,918 WARN L286 SmtUtils]: Spent 7.29s on a formula simplification that was a NOOP. DAG size: 1164 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:56:54,355 WARN L286 SmtUtils]: Spent 7.42s on a formula simplification that was a NOOP. DAG size: 1158 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:57:06,580 WARN L286 SmtUtils]: Spent 7.38s on a formula simplification that was a NOOP. DAG size: 1158 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:57:18,197 WARN L286 SmtUtils]: Spent 6.90s on a formula simplification that was a NOOP. DAG size: 1152 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:57:30,378 WARN L286 SmtUtils]: Spent 7.31s on a formula simplification that was a NOOP. DAG size: 1152 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:57:42,276 WARN L286 SmtUtils]: Spent 7.03s on a formula simplification that was a NOOP. DAG size: 1146 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:57:54,344 WARN L286 SmtUtils]: Spent 7.20s on a formula simplification that was a NOOP. DAG size: 1146 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:58:06,090 WARN L286 SmtUtils]: Spent 6.90s on a formula simplification that was a NOOP. DAG size: 1140 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:58:18,413 WARN L286 SmtUtils]: Spent 7.43s on a formula simplification that was a NOOP. DAG size: 1140 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:58:30,800 WARN L286 SmtUtils]: Spent 7.27s on a formula simplification that was a NOOP. DAG size: 1134 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:58:43,089 WARN L286 SmtUtils]: Spent 7.27s on a formula simplification that was a NOOP. DAG size: 1134 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:58:55,429 WARN L286 SmtUtils]: Spent 7.30s on a formula simplification that was a NOOP. DAG size: 1128 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:59:08,057 WARN L286 SmtUtils]: Spent 7.44s on a formula simplification that was a NOOP. DAG size: 1128 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:59:20,185 WARN L286 SmtUtils]: Spent 6.85s on a formula simplification that was a NOOP. DAG size: 1122 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:59:32,025 WARN L286 SmtUtils]: Spent 6.95s on a formula simplification that was a NOOP. DAG size: 1122 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:59:43,828 WARN L286 SmtUtils]: Spent 6.91s on a formula simplification that was a NOOP. DAG size: 1116 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:59:55,533 WARN L286 SmtUtils]: Spent 6.88s on a formula simplification that was a NOOP. DAG size: 1116 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:00:07,042 WARN L286 SmtUtils]: Spent 6.83s on a formula simplification that was a NOOP. DAG size: 1110 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:00:18,842 WARN L286 SmtUtils]: Spent 7.12s on a formula simplification that was a NOOP. DAG size: 1110 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:00:31,829 WARN L286 SmtUtils]: Spent 6.96s on a formula simplification that was a NOOP. DAG size: 1104 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:00:44,413 WARN L286 SmtUtils]: Spent 7.36s on a formula simplification that was a NOOP. DAG size: 1104 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:00:56,800 WARN L286 SmtUtils]: Spent 7.01s on a formula simplification that was a NOOP. DAG size: 1098 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:01:09,181 WARN L286 SmtUtils]: Spent 7.31s on a formula simplification that was a NOOP. DAG size: 1098 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:01:20,985 WARN L286 SmtUtils]: Spent 6.95s on a formula simplification that was a NOOP. DAG size: 1092 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:01:32,943 WARN L286 SmtUtils]: Spent 6.72s on a formula simplification that was a NOOP. DAG size: 1092 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:01:44,310 WARN L286 SmtUtils]: Spent 6.53s on a formula simplification that was a NOOP. DAG size: 1086 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:01:55,715 WARN L286 SmtUtils]: Spent 6.60s on a formula simplification that was a NOOP. DAG size: 1086 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:02:07,037 WARN L286 SmtUtils]: Spent 6.47s on a formula simplification that was a NOOP. DAG size: 1080 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:02:18,110 WARN L286 SmtUtils]: Spent 6.47s on a formula simplification that was a NOOP. DAG size: 1080 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:02:29,596 WARN L286 SmtUtils]: Spent 6.47s on a formula simplification that was a NOOP. DAG size: 1074 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:02:41,037 WARN L286 SmtUtils]: Spent 6.45s on a formula simplification that was a NOOP. DAG size: 1074 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:02:52,690 WARN L286 SmtUtils]: Spent 6.37s on a formula simplification that was a NOOP. DAG size: 1068 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:03:04,034 WARN L286 SmtUtils]: Spent 6.53s on a formula simplification that was a NOOP. DAG size: 1068 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:03:15,112 WARN L286 SmtUtils]: Spent 6.36s on a formula simplification that was a NOOP. DAG size: 1062 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:03:26,268 WARN L286 SmtUtils]: Spent 6.37s on a formula simplification that was a NOOP. DAG size: 1062 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:03:37,178 WARN L286 SmtUtils]: Spent 6.24s on a formula simplification that was a NOOP. DAG size: 1056 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:03:48,095 WARN L286 SmtUtils]: Spent 6.33s on a formula simplification that was a NOOP. DAG size: 1056 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:03:58,881 WARN L286 SmtUtils]: Spent 6.09s on a formula simplification that was a NOOP. DAG size: 1050 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:04:09,750 WARN L286 SmtUtils]: Spent 6.09s on a formula simplification that was a NOOP. DAG size: 1050 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:04:20,782 WARN L286 SmtUtils]: Spent 6.26s on a formula simplification that was a NOOP. DAG size: 1044 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:04:32,099 WARN L286 SmtUtils]: Spent 6.19s on a formula simplification that was a NOOP. DAG size: 1044 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:04:44,048 WARN L286 SmtUtils]: Spent 6.14s on a formula simplification that was a NOOP. DAG size: 1038 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:04:55,450 WARN L286 SmtUtils]: Spent 6.32s on a formula simplification that was a NOOP. DAG size: 1038 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:05:06,099 WARN L286 SmtUtils]: Spent 6.03s on a formula simplification that was a NOOP. DAG size: 1032 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)