./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/ps2-ll.c --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_9ea5bb9b-729e-40c7-bb9d-da7e1da56f53/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5bb9b-729e-40c7-bb9d-da7e1da56f53/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_9ea5bb9b-729e-40c7-bb9d-da7e1da56f53/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5bb9b-729e-40c7-bb9d-da7e1da56f53/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench/ps2-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5bb9b-729e-40c7-bb9d-da7e1da56f53/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_9ea5bb9b-729e-40c7-bb9d-da7e1da56f53/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 179b0134270d97f57074f9ac11d0788729a2f9ba65b60cccc5fdcd06091925db --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 01:07:55,079 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 01:07:55,179 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5bb9b-729e-40c7-bb9d-da7e1da56f53/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 01:07:55,185 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 01:07:55,185 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 01:07:55,226 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 01:07:55,227 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 01:07:55,227 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 01:07:55,228 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 01:07:55,228 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 01:07:55,229 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 01:07:55,229 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 01:07:55,229 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 01:07:55,234 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 01:07:55,235 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 01:07:55,235 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 01:07:55,236 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 01:07:55,236 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 01:07:55,236 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 01:07:55,237 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 01:07:55,237 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 01:07:55,238 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 01:07:55,238 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 01:07:55,239 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 01:07:55,239 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 01:07:55,239 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 01:07:55,240 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 01:07:55,240 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 01:07:55,240 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 01:07:55,240 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 01:07:55,243 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 01:07:55,244 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 01:07:55,244 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 01:07:55,245 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 01:07:55,245 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 01:07:55,245 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 01:07:55,246 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 01:07:55,246 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 01:07:55,246 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 01:07:55,246 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 01:07:55,247 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 01:07:55,247 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 01:07:55,247 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 01:07:55,248 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 01:07:55,248 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 01:07:55,249 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 01:07:55,249 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 01:07:55,249 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_9ea5bb9b-729e-40c7-bb9d-da7e1da56f53/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5bb9b-729e-40c7-bb9d-da7e1da56f53/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 179b0134270d97f57074f9ac11d0788729a2f9ba65b60cccc5fdcd06091925db [2024-11-09 01:07:55,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 01:07:55,594 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 01:07:55,597 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 01:07:55,598 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 01:07:55,600 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 01:07:55,605 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5bb9b-729e-40c7-bb9d-da7e1da56f53/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/nla-digbench/ps2-ll.c Unable to find full path for "g++" [2024-11-09 01:07:57,584 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 01:07:57,781 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 01:07:57,782 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5bb9b-729e-40c7-bb9d-da7e1da56f53/sv-benchmarks/c/nla-digbench/ps2-ll.c [2024-11-09 01:07:57,791 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5bb9b-729e-40c7-bb9d-da7e1da56f53/bin/utaipan-verify-YMUCfTKeje/data/3c811713e/0ea871a85e2f4d1aba6589f019cffce7/FLAG24f6ad4ea [2024-11-09 01:07:57,816 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5bb9b-729e-40c7-bb9d-da7e1da56f53/bin/utaipan-verify-YMUCfTKeje/data/3c811713e/0ea871a85e2f4d1aba6589f019cffce7 [2024-11-09 01:07:57,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 01:07:57,820 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 01:07:57,822 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 01:07:57,822 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 01:07:57,829 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 01:07:57,830 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:07:57" (1/1) ... [2024-11-09 01:07:57,833 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49f26edd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:07:57, skipping insertion in model container [2024-11-09 01:07:57,833 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:07:57" (1/1) ... [2024-11-09 01:07:57,858 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 01:07:58,049 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_9ea5bb9b-729e-40c7-bb9d-da7e1da56f53/sv-benchmarks/c/nla-digbench/ps2-ll.c[454,467] [2024-11-09 01:07:58,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 01:07:58,081 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 01:07:58,101 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_9ea5bb9b-729e-40c7-bb9d-da7e1da56f53/sv-benchmarks/c/nla-digbench/ps2-ll.c[454,467] [2024-11-09 01:07:58,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 01:07:58,123 INFO L204 MainTranslator]: Completed translation [2024-11-09 01:07:58,123 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:07:58 WrapperNode [2024-11-09 01:07:58,124 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 01:07:58,125 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 01:07:58,125 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 01:07:58,125 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 01:07:58,134 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:07:58" (1/1) ... [2024-11-09 01:07:58,143 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:07:58" (1/1) ... [2024-11-09 01:07:58,162 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 32 [2024-11-09 01:07:58,164 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 01:07:58,164 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 01:07:58,165 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 01:07:58,165 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 01:07:58,173 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:07:58" (1/1) ... [2024-11-09 01:07:58,173 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:07:58" (1/1) ... [2024-11-09 01:07:58,174 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:07:58" (1/1) ... [2024-11-09 01:07:58,175 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:07:58" (1/1) ... [2024-11-09 01:07:58,177 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:07:58" (1/1) ... [2024-11-09 01:07:58,181 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:07:58" (1/1) ... [2024-11-09 01:07:58,182 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:07:58" (1/1) ... [2024-11-09 01:07:58,182 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:07:58" (1/1) ... [2024-11-09 01:07:58,184 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 01:07:58,185 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 01:07:58,185 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 01:07:58,185 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 01:07:58,186 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:07:58" (1/1) ... [2024-11-09 01:07:58,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 01:07:58,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5bb9b-729e-40c7-bb9d-da7e1da56f53/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:07:58,217 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5bb9b-729e-40c7-bb9d-da7e1da56f53/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 01:07:58,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5bb9b-729e-40c7-bb9d-da7e1da56f53/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 01:07:58,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 01:07:58,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 01:07:58,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 01:07:58,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 01:07:58,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 01:07:58,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 01:07:58,337 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 01:07:58,339 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 01:07:58,502 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-09 01:07:58,503 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 01:07:58,552 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 01:07:58,553 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 01:07:58,553 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:07:58 BoogieIcfgContainer [2024-11-09 01:07:58,553 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 01:07:58,558 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 01:07:58,558 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 01:07:58,576 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 01:07:58,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 01:07:57" (1/3) ... [2024-11-09 01:07:58,578 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50206e2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:07:58, skipping insertion in model container [2024-11-09 01:07:58,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:07:58" (2/3) ... [2024-11-09 01:07:58,580 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50206e2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:07:58, skipping insertion in model container [2024-11-09 01:07:58,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:07:58" (3/3) ... [2024-11-09 01:07:58,582 INFO L112 eAbstractionObserver]: Analyzing ICFG ps2-ll.c [2024-11-09 01:07:58,601 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 01:07:58,601 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 01:07:58,699 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 01:07:58,705 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;@759c30df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 01:07:58,706 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 01:07:58,710 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 01:07:58,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-09 01:07:58,719 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:07:58,720 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 01:07:58,721 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:07:58,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:07:58,728 INFO L85 PathProgramCache]: Analyzing trace with hash 2043002330, now seen corresponding path program 1 times [2024-11-09 01:07:58,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:07:58,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522933616] [2024-11-09 01:07:58,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:07:58,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:07:58,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 01:07:58,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [336799738] [2024-11-09 01:07:58,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:07:58,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:07:58,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5bb9b-729e-40c7-bb9d-da7e1da56f53/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:07:58,855 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5bb9b-729e-40c7-bb9d-da7e1da56f53/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:07:58,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5bb9b-729e-40c7-bb9d-da7e1da56f53/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 01:07:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:07:58,930 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 01:07:58,935 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:07:59,053 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 01:07:59,055 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 01:07:59,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:07:59,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522933616] [2024-11-09 01:07:59,056 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 01:07:59,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336799738] [2024-11-09 01:07:59,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336799738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:07:59,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:07:59,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 01:07:59,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541440429] [2024-11-09 01:07:59,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:07:59,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 01:07:59,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:07:59,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 01:07:59,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 01:07:59,084 INFO L87 Difference]: Start difference. First operand has 13 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.0) internal successors, (5), 3 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 01:07:59,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:07:59,177 INFO L93 Difference]: Finished difference Result 34 states and 48 transitions. [2024-11-09 01:07:59,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 01:07:59,179 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.0) internal successors, (5), 3 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) Word has length 6 [2024-11-09 01:07:59,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:07:59,185 INFO L225 Difference]: With dead ends: 34 [2024-11-09 01:07:59,185 INFO L226 Difference]: Without dead ends: 18 [2024-11-09 01:07:59,188 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 01:07:59,191 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:07:59,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 28 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 01:07:59,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-09 01:07:59,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-09 01:07:59,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 01:07:59,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2024-11-09 01:07:59,233 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 6 [2024-11-09 01:07:59,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:07:59,233 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-11-09 01:07:59,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.0) internal successors, (5), 3 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 01:07:59,234 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2024-11-09 01:07:59,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 01:07:59,234 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:07:59,234 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:07:59,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5bb9b-729e-40c7-bb9d-da7e1da56f53/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 01:07:59,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5bb9b-729e-40c7-bb9d-da7e1da56f53/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-09 01:07:59,439 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:07:59,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:07:59,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1349101660, now seen corresponding path program 1 times [2024-11-09 01:07:59,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:07:59,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890672784] [2024-11-09 01:07:59,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:07:59,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:07:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 01:07:59,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1971898595] [2024-11-09 01:07:59,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:07:59,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:07:59,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5bb9b-729e-40c7-bb9d-da7e1da56f53/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:07:59,472 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5bb9b-729e-40c7-bb9d-da7e1da56f53/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:07:59,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5bb9b-729e-40c7-bb9d-da7e1da56f53/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 01:07:59,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:07:59,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 01:07:59,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:07:59,657 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:07:59,657 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:07:59,765 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 01:07:59,766 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:07:59,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890672784] [2024-11-09 01:07:59,766 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 01:07:59,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971898595] [2024-11-09 01:07:59,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971898595] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 01:07:59,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 01:07:59,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-11-09 01:07:59,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694825406] [2024-11-09 01:07:59,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:07:59,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 01:07:59,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:07:59,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 01:07:59,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 01:07:59,770 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 01:07:59,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:07:59,808 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2024-11-09 01:07:59,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 01:07:59,809 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-11-09 01:07:59,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:07:59,809 INFO L225 Difference]: With dead ends: 18 [2024-11-09 01:07:59,809 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 01:07:59,810 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 01:07:59,811 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 01:07:59,812 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 15 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 01:07:59,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 01:07:59,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 01:07:59,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 01:07:59,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 01:07:59,814 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2024-11-09 01:07:59,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:07:59,814 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 01:07:59,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 01:07:59,814 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 01:07:59,815 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 01:07:59,817 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 01:07:59,838 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5bb9b-729e-40c7-bb9d-da7e1da56f53/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 01:08:00,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5bb9b-729e-40c7-bb9d-da7e1da56f53/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:08:00,022 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-09 01:08:00,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-09 01:08:00,083 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 01:08:00,107 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 01:08:00 BoogieIcfgContainer [2024-11-09 01:08:00,107 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 01:08:00,109 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 01:08:00,109 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 01:08:00,109 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 01:08:00,110 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:07:58" (3/4) ... [2024-11-09 01:08:00,112 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 01:08:00,117 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-09 01:08:00,125 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-09 01:08:00,125 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-09 01:08:00,125 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-09 01:08:00,125 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 01:08:00,218 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5bb9b-729e-40c7-bb9d-da7e1da56f53/bin/utaipan-verify-YMUCfTKeje/witness.graphml [2024-11-09 01:08:00,218 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5bb9b-729e-40c7-bb9d-da7e1da56f53/bin/utaipan-verify-YMUCfTKeje/witness.yml [2024-11-09 01:08:00,219 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 01:08:00,219 INFO L158 Benchmark]: Toolchain (without parser) took 2399.21ms. Allocated memory is still 163.6MB. Free memory was 135.3MB in the beginning and 80.2MB in the end (delta: 55.1MB). Peak memory consumption was 51.6MB. Max. memory is 16.1GB. [2024-11-09 01:08:00,220 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 119.5MB. Free memory was 92.3MB in the beginning and 92.2MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 01:08:00,220 INFO L158 Benchmark]: CACSL2BoogieTranslator took 302.44ms. Allocated memory is still 163.6MB. Free memory was 134.6MB in the beginning and 122.8MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-09 01:08:00,220 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.98ms. Allocated memory is still 163.6MB. Free memory was 122.8MB in the beginning and 121.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 01:08:00,221 INFO L158 Benchmark]: Boogie Preprocessor took 19.58ms. Allocated memory is still 163.6MB. Free memory was 121.4MB in the beginning and 119.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 01:08:00,221 INFO L158 Benchmark]: RCFGBuilder took 368.66ms. Allocated memory is still 163.6MB. Free memory was 119.9MB in the beginning and 109.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-09 01:08:00,221 INFO L158 Benchmark]: TraceAbstraction took 1550.31ms. Allocated memory is still 163.6MB. Free memory was 108.8MB in the beginning and 84.4MB in the end (delta: 24.3MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. [2024-11-09 01:08:00,222 INFO L158 Benchmark]: Witness Printer took 109.98ms. Allocated memory is still 163.6MB. Free memory was 84.4MB in the beginning and 80.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 01:08:00,224 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 119.5MB. Free memory was 92.3MB in the beginning and 92.2MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 302.44ms. Allocated memory is still 163.6MB. Free memory was 134.6MB in the beginning and 122.8MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.98ms. Allocated memory is still 163.6MB. Free memory was 122.8MB in the beginning and 121.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 19.58ms. Allocated memory is still 163.6MB. Free memory was 121.4MB in the beginning and 119.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 368.66ms. Allocated memory is still 163.6MB. Free memory was 119.9MB in the beginning and 109.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1550.31ms. Allocated memory is still 163.6MB. Free memory was 108.8MB in the beginning and 84.4MB in the end (delta: 24.3MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. * Witness Printer took 109.98ms. Allocated memory is still 163.6MB. Free memory was 84.4MB in the beginning and 80.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 43 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 31 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 41 IncrementalHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 12 mSDtfsCounter, 41 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=1, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 123 SizeOfPredicates, 2 NumberOfNonLiveVariables, 95 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 6/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: (((__int128) 2 * x) == (y + ((__int128) y * y))) - ProcedureContractResult [Line: 9]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-11-09 01:08:00,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5bb9b-729e-40c7-bb9d-da7e1da56f53/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE