./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/unsignedintegeroverflow-sas23/linear_interpolation_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4849118-99b0-4d96-bf5a-49add4276acd/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4849118-99b0-4d96-bf5a-49add4276acd/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_f4849118-99b0-4d96-bf5a-49add4276acd/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4849118-99b0-4d96-bf5a-49add4276acd/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/unsignedintegeroverflow-sas23/linear_interpolation_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4849118-99b0-4d96-bf5a-49add4276acd/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_f4849118-99b0-4d96-bf5a-49add4276acd/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 1df1d3c2c05b97c248da484a3dd92d2a5284f58fae6383f6038575f7904076ab --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 07:24:04,967 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 07:24:05,099 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4849118-99b0-4d96-bf5a-49add4276acd/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 07:24:05,103 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 07:24:05,104 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 07:24:05,134 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 07:24:05,136 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 07:24:05,137 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 07:24:05,138 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 07:24:05,139 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 07:24:05,140 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 07:24:05,140 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 07:24:05,140 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 07:24:05,141 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 07:24:05,143 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 07:24:05,143 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 07:24:05,144 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 07:24:05,144 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 07:24:05,144 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 07:24:05,144 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 07:24:05,145 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 07:24:05,149 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 07:24:05,150 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 07:24:05,150 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 07:24:05,150 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 07:24:05,150 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 07:24:05,150 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 07:24:05,151 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 07:24:05,151 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 07:24:05,151 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 07:24:05,151 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 07:24:05,152 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 07:24:05,152 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 07:24:05,152 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 07:24:05,152 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 07:24:05,153 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 07:24:05,154 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 07:24:05,155 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 07:24:05,155 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:24:05,156 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 07:24:05,156 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 07:24:05,156 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 07:24:05,156 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 07:24:05,157 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 07:24:05,157 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 07:24:05,157 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 07:24:05,158 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 07:24:05,158 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_f4849118-99b0-4d96-bf5a-49add4276acd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4849118-99b0-4d96-bf5a-49add4276acd/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1df1d3c2c05b97c248da484a3dd92d2a5284f58fae6383f6038575f7904076ab [2024-11-09 07:24:05,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 07:24:05,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 07:24:05,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 07:24:05,583 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 07:24:05,583 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 07:24:05,585 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4849118-99b0-4d96-bf5a-49add4276acd/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/unsignedintegeroverflow-sas23/linear_interpolation_2.i Unable to find full path for "g++" [2024-11-09 07:24:07,713 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 07:24:07,952 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 07:24:07,952 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4849118-99b0-4d96-bf5a-49add4276acd/sv-benchmarks/c/unsignedintegeroverflow-sas23/linear_interpolation_2.i [2024-11-09 07:24:07,961 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4849118-99b0-4d96-bf5a-49add4276acd/bin/utaipan-verify-YMUCfTKeje/data/15120a81a/6029a82a85324da4809ee0cf12292b96/FLAG45ee4e54e [2024-11-09 07:24:07,976 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4849118-99b0-4d96-bf5a-49add4276acd/bin/utaipan-verify-YMUCfTKeje/data/15120a81a/6029a82a85324da4809ee0cf12292b96 [2024-11-09 07:24:07,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 07:24:07,981 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 07:24:07,982 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 07:24:07,983 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 07:24:07,989 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 07:24:07,990 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:24:07" (1/1) ... [2024-11-09 07:24:07,992 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d4aa3c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:07, skipping insertion in model container [2024-11-09 07:24:07,992 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:24:07" (1/1) ... [2024-11-09 07:24:08,014 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:24:08,256 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_f4849118-99b0-4d96-bf5a-49add4276acd/sv-benchmarks/c/unsignedintegeroverflow-sas23/linear_interpolation_2.i[1053,1066] [2024-11-09 07:24:08,277 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:24:08,296 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 07:24:08,308 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_f4849118-99b0-4d96-bf5a-49add4276acd/sv-benchmarks/c/unsignedintegeroverflow-sas23/linear_interpolation_2.i[1053,1066] [2024-11-09 07:24:08,313 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:24:08,332 INFO L204 MainTranslator]: Completed translation [2024-11-09 07:24:08,333 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:08 WrapperNode [2024-11-09 07:24:08,333 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 07:24:08,335 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 07:24:08,335 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 07:24:08,335 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 07:24:08,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:08" (1/1) ... [2024-11-09 07:24:08,349 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:08" (1/1) ... [2024-11-09 07:24:08,369 INFO L138 Inliner]: procedures = 15, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 30 [2024-11-09 07:24:08,369 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 07:24:08,370 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 07:24:08,370 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 07:24:08,370 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 07:24:08,380 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:08" (1/1) ... [2024-11-09 07:24:08,380 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:08" (1/1) ... [2024-11-09 07:24:08,382 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:08" (1/1) ... [2024-11-09 07:24:08,382 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:08" (1/1) ... [2024-11-09 07:24:08,384 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:08" (1/1) ... [2024-11-09 07:24:08,386 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:08" (1/1) ... [2024-11-09 07:24:08,388 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:08" (1/1) ... [2024-11-09 07:24:08,389 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:08" (1/1) ... [2024-11-09 07:24:08,390 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 07:24:08,391 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 07:24:08,391 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 07:24:08,392 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 07:24:08,393 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:08" (1/1) ... [2024-11-09 07:24:08,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:24:08,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4849118-99b0-4d96-bf5a-49add4276acd/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:24:08,425 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4849118-99b0-4d96-bf5a-49add4276acd/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 07:24:08,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4849118-99b0-4d96-bf5a-49add4276acd/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 07:24:08,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 07:24:08,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 07:24:08,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 07:24:08,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 07:24:08,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 07:24:08,467 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 07:24:08,551 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 07:24:08,554 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 07:24:08,826 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-09 07:24:08,826 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 07:24:08,943 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 07:24:08,943 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 07:24:08,944 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:24:08 BoogieIcfgContainer [2024-11-09 07:24:08,944 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 07:24:08,949 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 07:24:08,951 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 07:24:08,955 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 07:24:08,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:24:07" (1/3) ... [2024-11-09 07:24:08,957 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e5ffc0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:24:08, skipping insertion in model container [2024-11-09 07:24:08,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:08" (2/3) ... [2024-11-09 07:24:08,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e5ffc0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:24:08, skipping insertion in model container [2024-11-09 07:24:08,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:24:08" (3/3) ... [2024-11-09 07:24:08,961 INFO L112 eAbstractionObserver]: Analyzing ICFG linear_interpolation_2.i [2024-11-09 07:24:08,989 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 07:24:08,989 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 07:24:09,054 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 07:24:09,064 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;@7d10b82b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 07:24:09,065 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 07:24:09,069 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 9 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 07:24:09,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-09 07:24:09,076 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:24:09,077 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 07:24:09,077 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:24:09,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:24:09,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1958192936, now seen corresponding path program 1 times [2024-11-09 07:24:09,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:24:09,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434630882] [2024-11-09 07:24:09,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:24:09,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:24:09,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 07:24:09,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [808987007] [2024-11-09 07:24:09,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:24:09,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:24:09,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4849118-99b0-4d96-bf5a-49add4276acd/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:24:09,242 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4849118-99b0-4d96-bf5a-49add4276acd/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:24:09,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4849118-99b0-4d96-bf5a-49add4276acd/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 07:24:09,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:24:09,363 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 07:24:09,376 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:24:50,161 WARN L286 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 07:25:11,342 WARN L286 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 07:27:00,842 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 07:29:08,115 WARN L286 SmtUtils]: Spent 1.94m on a formula simplification that was a NOOP. DAG size: 371 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 07:29:30,164 WARN L286 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 07:29:57,239 WARN L286 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 07:30:23,435 WARN L286 SmtUtils]: Spent 6.04s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 07:30:40,710 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 07:31:11,511 WARN L286 SmtUtils]: Spent 6.03s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 07:31:17,535 WARN L286 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 07:33:22,175 WARN L286 SmtUtils]: Spent 2.03m on a formula simplification. DAG size of input: 246 DAG size of output: 220 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 07:33:46,073 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 07:34:21,524 WARN L286 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 07:36:34,697 WARN L851 $PredicateComparison]: unable to prove that (or (and (= |c___VERIFIER_assert_#in~cond| 0) (or (exists ((|v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| Int)) (and (exists ((v_z_5 Int) (v_y_5 Int) (v_z_21 Int) (v_y_21 Int)) (let ((.cse0 (* |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| v_z_5)) (.cse1 (* v_y_21 4294967296)) (.cse2 (* v_z_21 4294967295)) (.cse3 (+ v_z_5 (* v_y_5 4294967296)))) (and (not (= (mod (+ (* v_z_21 |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1|) .cse0) 256) 0)) (<= 0 v_z_21) (<= 0 (+ .cse1 2147483648 .cse2)) (<= 0 v_z_5) (<= (+ v_z_21 v_z_5) 256) (<= 2147483648 (mod (+ (div (+ (* v_z_21 |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| (- 4294967295)) .cse0) 256) (* v_y_21 |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| 4278190080) (* |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| 16777216 v_y_5) 1) 4294967296)) (<= .cse3 2147483647) (<= (+ .cse1 .cse2) .cse3)))) (<= |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| 2147483647) (<= 0 |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1|))) (exists ((|v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| Int)) (and (exists ((v_z_24 Int) (v_y_24 Int) (v_y_8 Int) (v_z_8 Int)) (and (<= 0 v_z_8) (<= (+ v_z_24 v_z_8) 256) (<= 0 v_z_24) (<= (+ (* (* v_y_24 |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1|) 16777216) |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| 1) (+ (div (+ (* v_z_24 |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| (- 4294967295)) (* |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| v_z_8)) 256) (* (* |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| v_y_8) 16777216))) (<= (+ (* v_y_8 4294967296) v_z_8) 2147483647) (<= 0 (+ (* v_z_24 4294967295) (* v_y_24 4294967296) 2147483648)))) (<= |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| 2147483647) (<= 0 |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1|))) (exists ((|v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| Int)) (and (<= |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| 2147483647) (<= 0 |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1|) (exists ((v_z_26 Int) (v_y_26 Int) (v_z_9 Int) (v_y_9 Int)) (let ((.cse4 (* |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| v_z_9)) (.cse5 (+ v_z_26 v_z_9))) (and (<= v_z_9 4294967295) (<= (+ v_z_9 (* v_y_9 4294967296)) 2147483647) (<= (+ (* 4294967295 (* v_z_26 |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1|)) (* (* v_y_26 |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1|) 4294967296)) (+ .cse4 (* (* |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| v_y_9) 4294967296))) (<= 4294967296 .cse5) (<= 2147483648 (mod (+ (div (+ .cse4 (* v_z_26 |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| (- 4294967295))) 256) (* |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| 16777216 v_y_9) (* v_y_26 |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| 4278190080)) 4294967296)) (<= 0 (+ (* v_y_26 4294967296) 2147483648 (* v_z_26 4294967295))) (<= .cse5 4294967552) (<= v_z_26 4294967295)))))))) (= |c___VERIFIER_assert_#in~cond| 1)) is different from false [2024-11-09 07:37:36,681 WARN L851 $PredicateComparison]: unable to prove that (or (= c___VERIFIER_assert_~cond 1) (and (or (exists ((|v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| Int)) (and (exists ((v_z_24 Int) (v_y_24 Int) (v_y_8 Int) (v_z_8 Int)) (and (<= 0 v_z_8) (<= (+ v_z_24 v_z_8) 256) (<= 0 v_z_24) (<= (+ (* (* v_y_24 |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1|) 16777216) |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| 1) (+ (div (+ (* v_z_24 |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| (- 4294967295)) (* |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| v_z_8)) 256) (* (* |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| v_y_8) 16777216))) (<= (+ (* v_y_8 4294967296) v_z_8) 2147483647) (<= 0 (+ (* v_z_24 4294967295) (* v_y_24 4294967296) 2147483648)))) (<= |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| 2147483647) (<= 0 |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1|))) (exists ((|v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| Int)) (and (<= |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| 2147483647) (<= 0 |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1|) (exists ((v_z_26 Int) (v_y_26 Int) (v_z_9 Int) (v_y_9 Int)) (let ((.cse0 (* |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| v_z_9)) (.cse1 (+ v_z_26 v_z_9))) (and (<= v_z_9 4294967295) (<= (+ v_z_9 (* v_y_9 4294967296)) 2147483647) (<= (+ (* 4294967295 (* v_z_26 |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1|)) (* (* v_y_26 |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1|) 4294967296)) (+ .cse0 (* (* |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| v_y_9) 4294967296))) (<= 4294967296 .cse1) (<= 2147483648 (mod (+ (div (+ .cse0 (* v_z_26 |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| (- 4294967295))) 256) (* |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| 16777216 v_y_9) (* v_y_26 |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| 4278190080)) 4294967296)) (<= 0 (+ (* v_y_26 4294967296) 2147483648 (* v_z_26 4294967295))) (<= .cse1 4294967552) (<= v_z_26 4294967295))))))) (= c___VERIFIER_assert_~cond 0))) is different from false [2024-11-09 07:38:19,916 WARN L851 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| Int)) (and (exists ((v_z_24 Int) (v_y_24 Int) (v_y_8 Int) (v_z_8 Int)) (and (<= 0 v_z_8) (<= (+ v_z_24 v_z_8) 256) (<= 0 v_z_24) (<= (+ (* (* v_y_24 |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1|) 16777216) |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| 1) (+ (div (+ (* v_z_24 |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| (- 4294967295)) (* |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| v_z_8)) 256) (* (* |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| v_y_8) 16777216))) (<= (+ (* v_y_8 4294967296) v_z_8) 2147483647) (<= 0 (+ (* v_z_24 4294967295) (* v_y_24 4294967296) 2147483648)))) (<= |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| 2147483647) (<= 0 |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1|))) (exists ((|v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| Int)) (and (<= |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| 2147483647) (<= 0 |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1|) (exists ((v_z_26 Int) (v_y_26 Int) (v_z_9 Int) (v_y_9 Int)) (let ((.cse0 (* |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| v_z_9)) (.cse1 (+ v_z_26 v_z_9))) (and (<= v_z_9 4294967295) (<= (+ v_z_9 (* v_y_9 4294967296)) 2147483647) (<= (+ (* 4294967295 (* v_z_26 |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1|)) (* (* v_y_26 |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1|) 4294967296)) (+ .cse0 (* (* |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| v_y_9) 4294967296))) (<= 4294967296 .cse1) (<= 2147483648 (mod (+ (div (+ .cse0 (* v_z_26 |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| (- 4294967295))) 256) (* |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| 16777216 v_y_9) (* v_y_26 |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| 4278190080)) 4294967296)) (<= 0 (+ (* v_y_26 4294967296) 2147483648 (* v_z_26 4294967295))) (<= .cse1 4294967552) (<= v_z_26 4294967295))))))) is different from false [2024-11-09 07:38:21,921 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| Int)) (and (exists ((v_z_24 Int) (v_y_24 Int) (v_y_8 Int) (v_z_8 Int)) (and (<= 0 v_z_8) (<= (+ v_z_24 v_z_8) 256) (<= 0 v_z_24) (<= (+ (* (* v_y_24 |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1|) 16777216) |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| 1) (+ (div (+ (* v_z_24 |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| (- 4294967295)) (* |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| v_z_8)) 256) (* (* |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| v_y_8) 16777216))) (<= (+ (* v_y_8 4294967296) v_z_8) 2147483647) (<= 0 (+ (* v_z_24 4294967295) (* v_y_24 4294967296) 2147483648)))) (<= |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| 2147483647) (<= 0 |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1|))) (exists ((|v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| Int)) (and (<= |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| 2147483647) (<= 0 |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1|) (exists ((v_z_26 Int) (v_y_26 Int) (v_z_9 Int) (v_y_9 Int)) (let ((.cse0 (* |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| v_z_9)) (.cse1 (+ v_z_26 v_z_9))) (and (<= v_z_9 4294967295) (<= (+ v_z_9 (* v_y_9 4294967296)) 2147483647) (<= (+ (* 4294967295 (* v_z_26 |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1|)) (* (* v_y_26 |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1|) 4294967296)) (+ .cse0 (* (* |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| v_y_9) 4294967296))) (<= 4294967296 .cse1) (<= 2147483648 (mod (+ (div (+ .cse0 (* v_z_26 |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| (- 4294967295))) 256) (* |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| 16777216 v_y_9) (* v_y_26 |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_1| 4278190080)) 4294967296)) (<= 0 (+ (* v_y_26 4294967296) 2147483648 (* v_z_26 4294967295))) (<= .cse1 4294967552) (<= v_z_26 4294967295))))))) is different from true [2024-11-09 07:38:21,923 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 07:38:21,924 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:38:21,924 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:38:21,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434630882] [2024-11-09 07:38:21,926 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 07:38:21,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808987007] [2024-11-09 07:38:21,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808987007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:38:21,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:38:21,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 07:38:21,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138899672] [2024-11-09 07:38:21,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:38:21,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 07:38:21,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:38:21,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 07:38:21,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=8, Unknown=5, NotChecked=18, Total=42 [2024-11-09 07:38:21,975 INFO L87 Difference]: Start difference. First operand has 12 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 9 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 7 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:38:24,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0]