./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-32.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-32.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire --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 b3713b25a83a921fe666aac85c13dc353e68d0c4544ef354673bb4c8722689bd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:31:34,203 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:31:34,278 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:31:34,284 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:31:34,285 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:31:34,312 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:31:34,313 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:31:34,314 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:31:34,315 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:31:34,316 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:31:34,316 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:31:34,317 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:31:34,318 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:31:34,319 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:31:34,319 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:31:34,320 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:31:34,320 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:31:34,321 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:31:34,322 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:31:34,322 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:31:34,323 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:31:34,324 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:31:34,325 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:31:34,325 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:31:34,326 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:31:34,326 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:31:34,327 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:31:34,328 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:31:34,328 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:31:34,328 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:31:34,329 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:31:34,330 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:31:34,331 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:31:34,331 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:31:34,331 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:31:34,332 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:31:34,332 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:31:34,333 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:31:34,333 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:31:34,333 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:31:34,334 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:31:34,334 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:31:34,334 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:31:34,335 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:31:34,335 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:31:34,336 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:31:34,336 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:31:34,336 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_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3713b25a83a921fe666aac85c13dc353e68d0c4544ef354673bb4c8722689bd [2023-11-23 21:31:34,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:31:34,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:31:34,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:31:34,669 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:31:34,669 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:31:34,671 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-32.i [2023-11-23 21:31:37,806 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:31:38,023 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:31:38,024 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-32.i [2023-11-23 21:31:38,034 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire/data/ba1825b5c/976f955e24ae41a6ad9076b7ad040e1b/FLAG5d9f8bed5 [2023-11-23 21:31:38,049 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire/data/ba1825b5c/976f955e24ae41a6ad9076b7ad040e1b [2023-11-23 21:31:38,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:31:38,054 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:31:38,056 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:31:38,056 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:31:38,062 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:31:38,063 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:31:38" (1/1) ... [2023-11-23 21:31:38,064 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e41786b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:38, skipping insertion in model container [2023-11-23 21:31:38,064 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:31:38" (1/1) ... [2023-11-23 21:31:38,091 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:31:38,245 WARN L240 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_d2fcdc88-3485-4f48-93bc-fecf8e02608e/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-32.i[915,928] [2023-11-23 21:31:38,293 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:31:38,312 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:31:38,324 WARN L240 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_d2fcdc88-3485-4f48-93bc-fecf8e02608e/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-32.i[915,928] [2023-11-23 21:31:38,366 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:31:38,396 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:31:38,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:38 WrapperNode [2023-11-23 21:31:38,397 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:31:38,398 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:31:38,399 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:31:38,399 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:31:38,407 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:38" (1/1) ... [2023-11-23 21:31:38,418 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:38" (1/1) ... [2023-11-23 21:31:38,465 INFO L138 Inliner]: procedures = 26, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 171 [2023-11-23 21:31:38,466 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:31:38,466 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:31:38,466 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:31:38,467 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:31:38,477 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:38" (1/1) ... [2023-11-23 21:31:38,477 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:38" (1/1) ... [2023-11-23 21:31:38,481 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:38" (1/1) ... [2023-11-23 21:31:38,481 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:38" (1/1) ... [2023-11-23 21:31:38,492 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:38" (1/1) ... [2023-11-23 21:31:38,497 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:38" (1/1) ... [2023-11-23 21:31:38,501 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:38" (1/1) ... [2023-11-23 21:31:38,503 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:38" (1/1) ... [2023-11-23 21:31:38,510 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:31:38,511 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:31:38,511 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:31:38,511 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:31:38,512 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:38" (1/1) ... [2023-11-23 21:31:38,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:31:38,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:31:38,558 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:31:38,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:31:38,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:31:38,614 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:31:38,614 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:31:38,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:31:38,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:31:38,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:31:38,732 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:31:38,734 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:31:39,181 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:31:39,484 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:31:39,485 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:31:39,486 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:31:39 BoogieIcfgContainer [2023-11-23 21:31:39,486 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:31:39,489 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:31:39,489 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:31:39,492 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:31:39,493 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:31:38" (1/3) ... [2023-11-23 21:31:39,494 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1365b225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:31:39, skipping insertion in model container [2023-11-23 21:31:39,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:38" (2/3) ... [2023-11-23 21:31:39,494 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1365b225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:31:39, skipping insertion in model container [2023-11-23 21:31:39,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:31:39" (3/3) ... [2023-11-23 21:31:39,496 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-32.i [2023-11-23 21:31:39,518 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:31:39,519 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:31:39,583 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:31:39,591 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@62d681df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:31:39,591 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:31:39,596 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-23 21:31:39,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-23 21:31:39,608 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:39,609 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:31:39,610 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:31:39,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:39,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1224208522, now seen corresponding path program 1 times [2023-11-23 21:31:39,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:31:39,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468919456] [2023-11-23 21:31:39,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:39,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:31:39,847 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:31:39,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1451304222] [2023-11-23 21:31:39,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:39,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:31:39,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:31:39,857 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:31:39,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:31:40,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:31:40,489 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:31:40,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:31:40,722 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:31:40,725 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:31:40,726 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:31:40,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:31:40,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 21:31:40,954 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:31:40,966 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:31:41,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:31:41 BoogieIcfgContainer [2023-11-23 21:31:41,051 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:31:41,052 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:31:41,052 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:31:41,052 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:31:41,053 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:31:39" (3/4) ... [2023-11-23 21:31:41,055 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:31:41,056 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:31:41,057 INFO L158 Benchmark]: Toolchain (without parser) took 3003.35ms. Allocated memory is still 163.6MB. Free memory was 116.1MB in the beginning and 59.9MB in the end (delta: 56.2MB). Peak memory consumption was 60.3MB. Max. memory is 16.1GB. [2023-11-23 21:31:41,058 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 127.9MB. Free memory was 92.7MB in the beginning and 92.6MB in the end (delta: 28.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:31:41,059 INFO L158 Benchmark]: CACSL2BoogieTranslator took 341.82ms. Allocated memory is still 163.6MB. Free memory was 116.1MB in the beginning and 102.7MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-23 21:31:41,059 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.31ms. Allocated memory is still 163.6MB. Free memory was 102.7MB in the beginning and 99.2MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:31:41,060 INFO L158 Benchmark]: Boogie Preprocessor took 43.85ms. Allocated memory is still 163.6MB. Free memory was 99.2MB in the beginning and 97.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:31:41,060 INFO L158 Benchmark]: RCFGBuilder took 975.60ms. Allocated memory is still 163.6MB. Free memory was 97.1MB in the beginning and 96.6MB in the end (delta: 519.9kB). Peak memory consumption was 41.4MB. Max. memory is 16.1GB. [2023-11-23 21:31:41,061 INFO L158 Benchmark]: TraceAbstraction took 1562.76ms. Allocated memory is still 163.6MB. Free memory was 95.5MB in the beginning and 59.9MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2023-11-23 21:31:41,062 INFO L158 Benchmark]: Witness Printer took 4.30ms. Allocated memory is still 163.6MB. Free memory was 59.9MB in the beginning and 59.9MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:31:41,066 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 127.9MB. Free memory was 92.7MB in the beginning and 92.6MB in the end (delta: 28.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 341.82ms. Allocated memory is still 163.6MB. Free memory was 116.1MB in the beginning and 102.7MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.31ms. Allocated memory is still 163.6MB. Free memory was 102.7MB in the beginning and 99.2MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.85ms. Allocated memory is still 163.6MB. Free memory was 99.2MB in the beginning and 97.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 975.60ms. Allocated memory is still 163.6MB. Free memory was 97.1MB in the beginning and 96.6MB in the end (delta: 519.9kB). Peak memory consumption was 41.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1562.76ms. Allocated memory is still 163.6MB. Free memory was 95.5MB in the beginning and 59.9MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Witness Printer took 4.30ms. Allocated memory is still 163.6MB. Free memory was 59.9MB in the beginning and 59.9MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. 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 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of shiftRight at line 53, overapproximation of shiftLeft at line 53, overapproximation of bitwiseOr at line 53, overapproximation of bitwiseAnd at line 42. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned short int var_1_1 = 0; [L23] unsigned short int var_1_3 = 128; [L24] unsigned short int var_1_4 = 4; [L25] unsigned short int var_1_5 = 0; [L26] signed short int var_1_6 = 0; [L27] unsigned char var_1_7 = 1; [L28] signed short int var_1_8 = -2; [L29] signed short int var_1_9 = 500; [L30] unsigned long int var_1_10 = 10; [L31] unsigned char var_1_11 = 2; [L32] unsigned char var_1_12 = 64; [L33] unsigned long int var_1_13 = 1; [L34] unsigned long int last_1_var_1_10 = 10; [L35] unsigned long int last_1_var_1_13 = 1; [L94] isInitial = 1 [L95] FCALL initially() [L96] COND TRUE 1 [L97] CALL updateLastVariables() [L86] last_1_var_1_10 = var_1_10 [L87] last_1_var_1_13 = var_1_13 [L97] RET updateLastVariables() [L98] CALL updateVariables() [L60] var_1_3 = __VERIFIER_nondet_ushort() [L61] CALL assume_abort_if_not(var_1_3 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=10, last_1_var_1_13=1, var_1_10=10, var_1_11=2, var_1_12=64, var_1_13=1, var_1_1=0, var_1_4=4, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=-2, var_1_9=500] [L20] COND FALSE !(!cond) [L61] RET assume_abort_if_not(var_1_3 >= 0) VAL [isInitial=1, last_1_var_1_10=10, last_1_var_1_13=1, var_1_10=10, var_1_11=2, var_1_12=64, var_1_13=1, var_1_1=0, var_1_4=4, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=-2, var_1_9=500] [L62] CALL assume_abort_if_not(var_1_3 <= 32767) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=10, last_1_var_1_13=1, var_1_10=10, var_1_11=2, var_1_12=64, var_1_13=1, var_1_1=0, var_1_3=0, var_1_4=4, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=-2, var_1_9=500] [L20] COND FALSE !(!cond) [L62] RET assume_abort_if_not(var_1_3 <= 32767) VAL [isInitial=1, last_1_var_1_10=10, last_1_var_1_13=1, var_1_10=10, var_1_11=2, var_1_12=64, var_1_13=1, var_1_1=0, var_1_3=0, var_1_4=4, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=-2, var_1_9=500] [L63] var_1_4 = __VERIFIER_nondet_ushort() [L64] CALL assume_abort_if_not(var_1_4 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=10, last_1_var_1_13=1, var_1_10=10, var_1_11=2, var_1_12=64, var_1_13=1, var_1_1=0, var_1_3=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=-2, var_1_9=500] [L20] COND FALSE !(!cond) [L64] RET assume_abort_if_not(var_1_4 >= 0) VAL [isInitial=1, last_1_var_1_10=10, last_1_var_1_13=1, var_1_10=10, var_1_11=2, var_1_12=64, var_1_13=1, var_1_1=0, var_1_3=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=-2, var_1_9=500] [L65] CALL assume_abort_if_not(var_1_4 <= 32767) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=10, last_1_var_1_13=1, var_1_10=10, var_1_11=2, var_1_12=64, var_1_13=1, var_1_1=0, var_1_3=0, var_1_4=2, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=-2, var_1_9=500] [L20] COND FALSE !(!cond) [L65] RET assume_abort_if_not(var_1_4 <= 32767) VAL [isInitial=1, last_1_var_1_10=10, last_1_var_1_13=1, var_1_10=10, var_1_11=2, var_1_12=64, var_1_13=1, var_1_1=0, var_1_3=0, var_1_4=2, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=-2, var_1_9=500] [L66] var_1_5 = __VERIFIER_nondet_ushort() [L67] CALL assume_abort_if_not(var_1_5 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=10, last_1_var_1_13=1, var_1_10=10, var_1_11=2, var_1_12=64, var_1_13=1, var_1_1=0, var_1_3=0, var_1_4=2, var_1_6=0, var_1_7=1, var_1_8=-2, var_1_9=500] [L20] COND FALSE !(!cond) [L67] RET assume_abort_if_not(var_1_5 >= 0) VAL [isInitial=1, last_1_var_1_10=10, last_1_var_1_13=1, var_1_10=10, var_1_11=2, var_1_12=64, var_1_13=1, var_1_1=0, var_1_3=0, var_1_4=2, var_1_6=0, var_1_7=1, var_1_8=-2, var_1_9=500] [L68] CALL assume_abort_if_not(var_1_5 <= 65534) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=10, last_1_var_1_13=1, var_1_10=10, var_1_11=2, var_1_12=64, var_1_13=1, var_1_1=0, var_1_3=0, var_1_4=2, var_1_5=1, var_1_6=0, var_1_7=1, var_1_8=-2, var_1_9=500] [L20] COND FALSE !(!cond) [L68] RET assume_abort_if_not(var_1_5 <= 65534) VAL [isInitial=1, last_1_var_1_10=10, last_1_var_1_13=1, var_1_10=10, var_1_11=2, var_1_12=64, var_1_13=1, var_1_1=0, var_1_3=0, var_1_4=2, var_1_5=1, var_1_6=0, var_1_7=1, var_1_8=-2, var_1_9=500] [L69] var_1_7 = __VERIFIER_nondet_uchar() [L70] CALL assume_abort_if_not(var_1_7 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=10, last_1_var_1_13=1, var_1_10=10, var_1_11=2, var_1_12=64, var_1_13=1, var_1_1=0, var_1_3=0, var_1_4=2, var_1_5=1, var_1_6=0, var_1_8=-2, var_1_9=500] [L20] COND FALSE !(!cond) [L70] RET assume_abort_if_not(var_1_7 >= 0) VAL [isInitial=1, last_1_var_1_10=10, last_1_var_1_13=1, var_1_10=10, var_1_11=2, var_1_12=64, var_1_13=1, var_1_1=0, var_1_3=0, var_1_4=2, var_1_5=1, var_1_6=0, var_1_8=-2, var_1_9=500] [L71] CALL assume_abort_if_not(var_1_7 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=10, last_1_var_1_13=1, var_1_10=10, var_1_11=2, var_1_12=64, var_1_13=1, var_1_1=0, var_1_3=0, var_1_4=2, var_1_5=1, var_1_6=0, var_1_7=0, var_1_8=-2, var_1_9=500] [L20] COND FALSE !(!cond) [L71] RET assume_abort_if_not(var_1_7 <= 1) VAL [isInitial=1, last_1_var_1_10=10, last_1_var_1_13=1, var_1_10=10, var_1_11=2, var_1_12=64, var_1_13=1, var_1_1=0, var_1_3=0, var_1_4=2, var_1_5=1, var_1_6=0, var_1_7=0, var_1_8=-2, var_1_9=500] [L72] var_1_8 = __VERIFIER_nondet_short() [L73] CALL assume_abort_if_not(var_1_8 >= -16383) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=10, last_1_var_1_13=1, var_1_10=10, var_1_11=2, var_1_12=64, var_1_13=1, var_1_1=0, var_1_3=0, var_1_4=2, var_1_5=1, var_1_6=0, var_1_7=0, var_1_8=-1, var_1_9=500] [L20] COND FALSE !(!cond) [L73] RET assume_abort_if_not(var_1_8 >= -16383) VAL [isInitial=1, last_1_var_1_10=10, last_1_var_1_13=1, var_1_10=10, var_1_11=2, var_1_12=64, var_1_13=1, var_1_1=0, var_1_3=0, var_1_4=2, var_1_5=1, var_1_6=0, var_1_7=0, var_1_8=-1, var_1_9=500] [L74] CALL assume_abort_if_not(var_1_8 <= 16383) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=10, last_1_var_1_13=1, var_1_10=10, var_1_11=2, var_1_12=64, var_1_13=1, var_1_1=0, var_1_3=0, var_1_4=2, var_1_5=1, var_1_6=0, var_1_7=0, var_1_8=-1, var_1_9=500] [L20] COND FALSE !(!cond) [L74] RET assume_abort_if_not(var_1_8 <= 16383) VAL [isInitial=1, last_1_var_1_10=10, last_1_var_1_13=1, var_1_10=10, var_1_11=2, var_1_12=64, var_1_13=1, var_1_1=0, var_1_3=0, var_1_4=2, var_1_5=1, var_1_6=0, var_1_7=0, var_1_8=-1, var_1_9=500] [L75] var_1_9 = __VERIFIER_nondet_short() [L76] CALL assume_abort_if_not(var_1_9 >= -16383) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=10, last_1_var_1_13=1, var_1_10=10, var_1_11=2, var_1_12=64, var_1_13=1, var_1_1=0, var_1_3=0, var_1_4=2, var_1_5=1, var_1_6=0, var_1_7=0, var_1_8=-1, var_1_9=-16383] [L20] COND FALSE !(!cond) [L76] RET assume_abort_if_not(var_1_9 >= -16383) VAL [isInitial=1, last_1_var_1_10=10, last_1_var_1_13=1, var_1_10=10, var_1_11=2, var_1_12=64, var_1_13=1, var_1_1=0, var_1_3=0, var_1_4=2, var_1_5=1, var_1_6=0, var_1_7=0, var_1_8=-1, var_1_9=-16383] [L77] CALL assume_abort_if_not(var_1_9 <= 16383) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=10, last_1_var_1_13=1, var_1_10=10, var_1_11=2, var_1_12=64, var_1_13=1, var_1_1=0, var_1_3=0, var_1_4=2, var_1_5=1, var_1_6=0, var_1_7=0, var_1_8=-1, var_1_9=-16383] [L20] COND FALSE !(!cond) [L77] RET assume_abort_if_not(var_1_9 <= 16383) VAL [isInitial=1, last_1_var_1_10=10, last_1_var_1_13=1, var_1_10=10, var_1_11=2, var_1_12=64, var_1_13=1, var_1_1=0, var_1_3=0, var_1_4=2, var_1_5=1, var_1_6=0, var_1_7=0, var_1_8=-1, var_1_9=-16383] [L78] var_1_11 = __VERIFIER_nondet_uchar() [L79] CALL assume_abort_if_not(var_1_11 >= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=10, last_1_var_1_13=1, var_1_10=10, var_1_11=1, var_1_12=64, var_1_13=1, var_1_1=0, var_1_3=0, var_1_4=2, var_1_5=1, var_1_6=0, var_1_7=0, var_1_8=-1, var_1_9=-16383] [L20] COND FALSE !(!cond) [L79] RET assume_abort_if_not(var_1_11 >= 1) VAL [isInitial=1, last_1_var_1_10=10, last_1_var_1_13=1, var_1_10=10, var_1_11=1, var_1_12=64, var_1_13=1, var_1_1=0, var_1_3=0, var_1_4=2, var_1_5=1, var_1_6=0, var_1_7=0, var_1_8=-1, var_1_9=-16383] [L80] CALL assume_abort_if_not(var_1_11 <= 128) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=10, last_1_var_1_13=1, var_1_10=10, var_1_11=1, var_1_12=64, var_1_13=1, var_1_1=0, var_1_3=0, var_1_4=2, var_1_5=1, var_1_6=0, var_1_7=0, var_1_8=-1, var_1_9=-16383] [L20] COND FALSE !(!cond) [L80] RET assume_abort_if_not(var_1_11 <= 128) VAL [isInitial=1, last_1_var_1_10=10, last_1_var_1_13=1, var_1_10=10, var_1_11=1, var_1_12=64, var_1_13=1, var_1_1=0, var_1_3=0, var_1_4=2, var_1_5=1, var_1_6=0, var_1_7=0, var_1_8=-1, var_1_9=-16383] [L81] var_1_12 = __VERIFIER_nondet_uchar() [L82] CALL assume_abort_if_not(var_1_12 >= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=10, last_1_var_1_13=1, var_1_10=10, var_1_11=1, var_1_12=2, var_1_13=1, var_1_1=0, var_1_3=0, var_1_4=2, var_1_5=1, var_1_6=0, var_1_7=0, var_1_8=-1, var_1_9=-16383] [L20] COND FALSE !(!cond) [L82] RET assume_abort_if_not(var_1_12 >= 1) VAL [isInitial=1, last_1_var_1_10=10, last_1_var_1_13=1, var_1_10=10, var_1_11=1, var_1_12=2, var_1_13=1, var_1_1=0, var_1_3=0, var_1_4=2, var_1_5=1, var_1_6=0, var_1_7=0, var_1_8=-1, var_1_9=-16383] [L83] CALL assume_abort_if_not(var_1_12 <= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=10, last_1_var_1_13=1, var_1_10=10, var_1_11=1, var_1_12=2, var_1_13=1, var_1_1=0, var_1_3=0, var_1_4=2, var_1_5=1, var_1_6=0, var_1_7=0, var_1_8=-1, var_1_9=-16383] [L20] COND FALSE !(!cond) [L83] RET assume_abort_if_not(var_1_12 <= 127) VAL [isInitial=1, last_1_var_1_10=10, last_1_var_1_13=1, var_1_10=10, var_1_11=1, var_1_12=2, var_1_13=1, var_1_1=0, var_1_3=0, var_1_4=2, var_1_5=1, var_1_6=0, var_1_7=0, var_1_8=-1, var_1_9=-16383] [L98] RET updateVariables() [L99] CALL step() [L39] COND FALSE !(last_1_var_1_13 >= -50) [L42] EXPR var_1_11 & var_1_12 [L42] signed long int stepLocal_0 = var_1_11 & var_1_12; [L43] COND FALSE !(\read(var_1_7)) [L46] COND FALSE !(stepLocal_0 != var_1_1) [L50] COND FALSE !(\read(var_1_7)) [L53] EXPR last_1_var_1_10 >> var_1_1 [L53] EXPR var_1_8 << var_1_5 [L53] EXPR (last_1_var_1_10 >> var_1_1) ^ (var_1_8 << var_1_5) [L53] COND TRUE (var_1_6 / (var_1_11 + var_1_12)) != ((last_1_var_1_10 >> var_1_1) ^ (var_1_8 << var_1_5)) [L54] var_1_10 = ((((var_1_12) < (var_1_4)) ? (var_1_12) : (var_1_4))) [L99] RET step() [L100] CALL, EXPR property() [L90] EXPR (((last_1_var_1_13 >= -50) ? (var_1_1 == ((unsigned short int) (((((var_1_3 + ((((var_1_4) < 0 ) ? -(var_1_4) : (var_1_4))))) > (var_1_5)) ? ((var_1_3 + ((((var_1_4) < 0 ) ? -(var_1_4) : (var_1_4))))) : (var_1_5))))) : 1) && (var_1_7 ? (var_1_6 == ((signed short int) (var_1_8 + var_1_9))) : 1)) && (((var_1_6 / (var_1_11 + var_1_12)) != ((last_1_var_1_10 >> var_1_1) ^ (var_1_8 << var_1_5))) ? (var_1_10 == ((unsigned long int) ((((var_1_12) < (var_1_4)) ? (var_1_12) : (var_1_4))))) : (var_1_10 == ((unsigned long int) var_1_11))) [L90] EXPR last_1_var_1_10 >> var_1_1 [L90] EXPR var_1_8 << var_1_5 [L90] EXPR (last_1_var_1_10 >> var_1_1) ^ (var_1_8 << var_1_5) [L90] EXPR (((last_1_var_1_13 >= -50) ? (var_1_1 == ((unsigned short int) (((((var_1_3 + ((((var_1_4) < 0 ) ? -(var_1_4) : (var_1_4))))) > (var_1_5)) ? ((var_1_3 + ((((var_1_4) < 0 ) ? -(var_1_4) : (var_1_4))))) : (var_1_5))))) : 1) && (var_1_7 ? (var_1_6 == ((signed short int) (var_1_8 + var_1_9))) : 1)) && (((var_1_6 / (var_1_11 + var_1_12)) != ((last_1_var_1_10 >> var_1_1) ^ (var_1_8 << var_1_5))) ? (var_1_10 == ((unsigned long int) ((((var_1_12) < (var_1_4)) ? (var_1_12) : (var_1_4))))) : (var_1_10 == ((unsigned long int) var_1_11))) [L90] EXPR ((((last_1_var_1_13 >= -50) ? (var_1_1 == ((unsigned short int) (((((var_1_3 + ((((var_1_4) < 0 ) ? -(var_1_4) : (var_1_4))))) > (var_1_5)) ? ((var_1_3 + ((((var_1_4) < 0 ) ? -(var_1_4) : (var_1_4))))) : (var_1_5))))) : 1) && (var_1_7 ? (var_1_6 == ((signed short int) (var_1_8 + var_1_9))) : 1)) && (((var_1_6 / (var_1_11 + var_1_12)) != ((last_1_var_1_10 >> var_1_1) ^ (var_1_8 << var_1_5))) ? (var_1_10 == ((unsigned long int) ((((var_1_12) < (var_1_4)) ? (var_1_12) : (var_1_4))))) : (var_1_10 == ((unsigned long int) var_1_11)))) && (var_1_7 ? (var_1_13 == ((unsigned long int) ((((var_1_11) > (var_1_1)) ? (var_1_11) : (var_1_1))))) : (((var_1_11 & var_1_12) != var_1_1) ? (var_1_13 == ((unsigned long int) var_1_12)) : 1)) [L90] EXPR var_1_7 ? (var_1_13 == ((unsigned long int) ((((var_1_11) > (var_1_1)) ? (var_1_11) : (var_1_1))))) : (((var_1_11 & var_1_12) != var_1_1) ? (var_1_13 == ((unsigned long int) var_1_12)) : 1) [L90] EXPR var_1_11 & var_1_12 [L90] EXPR var_1_7 ? (var_1_13 == ((unsigned long int) ((((var_1_11) > (var_1_1)) ? (var_1_11) : (var_1_1))))) : (((var_1_11 & var_1_12) != var_1_1) ? (var_1_13 == ((unsigned long int) var_1_12)) : 1) [L90] EXPR ((((last_1_var_1_13 >= -50) ? (var_1_1 == ((unsigned short int) (((((var_1_3 + ((((var_1_4) < 0 ) ? -(var_1_4) : (var_1_4))))) > (var_1_5)) ? ((var_1_3 + ((((var_1_4) < 0 ) ? -(var_1_4) : (var_1_4))))) : (var_1_5))))) : 1) && (var_1_7 ? (var_1_6 == ((signed short int) (var_1_8 + var_1_9))) : 1)) && (((var_1_6 / (var_1_11 + var_1_12)) != ((last_1_var_1_10 >> var_1_1) ^ (var_1_8 << var_1_5))) ? (var_1_10 == ((unsigned long int) ((((var_1_12) < (var_1_4)) ? (var_1_12) : (var_1_4))))) : (var_1_10 == ((unsigned long int) var_1_11)))) && (var_1_7 ? (var_1_13 == ((unsigned long int) ((((var_1_11) > (var_1_1)) ? (var_1_11) : (var_1_1))))) : (((var_1_11 & var_1_12) != var_1_1) ? (var_1_13 == ((unsigned long int) var_1_12)) : 1)) [L90-L91] return ((((last_1_var_1_13 >= -50) ? (var_1_1 == ((unsigned short int) (((((var_1_3 + ((((var_1_4) < 0 ) ? -(var_1_4) : (var_1_4))))) > (var_1_5)) ? ((var_1_3 + ((((var_1_4) < 0 ) ? -(var_1_4) : (var_1_4))))) : (var_1_5))))) : 1) && (var_1_7 ? (var_1_6 == ((signed short int) (var_1_8 + var_1_9))) : 1)) && (((var_1_6 / (var_1_11 + var_1_12)) != ((last_1_var_1_10 >> var_1_1) ^ (var_1_8 << var_1_5))) ? (var_1_10 == ((unsigned long int) ((((var_1_12) < (var_1_4)) ? (var_1_12) : (var_1_4))))) : (var_1_10 == ((unsigned long int) var_1_11)))) && (var_1_7 ? (var_1_13 == ((unsigned long int) ((((var_1_11) > (var_1_1)) ? (var_1_11) : (var_1_1))))) : (((var_1_11 & var_1_12) != var_1_1) ? (var_1_13 == ((unsigned long int) var_1_12)) : 1)) ; [L100] RET, EXPR property() [L100] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_10=10, last_1_var_1_13=1, var_1_10=2, var_1_11=1, var_1_12=2, var_1_13=1, var_1_1=0, var_1_3=0, var_1_4=2, var_1_5=1, var_1_6=0, var_1_7=0, var_1_8=-1, var_1_9=-16383] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_10=10, last_1_var_1_13=1, var_1_10=2, var_1_11=1, var_1_12=2, var_1_13=1, var_1_1=0, var_1_3=0, var_1_4=2, var_1_5=1, var_1_6=0, var_1_7=0, var_1_8=-1, var_1_9=-16383] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 1, TraceHistogramMax: 16, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 21:31:41,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-32.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire --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 b3713b25a83a921fe666aac85c13dc353e68d0c4544ef354673bb4c8722689bd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:31:43,902 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:31:44,047 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-23 21:31:44,055 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:31:44,056 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:31:44,098 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:31:44,099 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:31:44,099 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:31:44,100 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:31:44,105 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:31:44,106 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:31:44,106 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:31:44,107 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:31:44,108 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:31:44,109 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:31:44,109 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:31:44,111 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:31:44,111 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:31:44,112 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:31:44,113 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:31:44,113 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:31:44,114 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:31:44,114 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:31:44,114 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:31:44,115 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:31:44,115 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:31:44,116 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:31:44,116 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:31:44,117 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:31:44,117 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:31:44,118 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:31:44,119 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:31:44,119 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:31:44,119 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:31:44,120 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:31:44,120 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:31:44,120 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:31:44,121 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:31:44,121 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:31:44,122 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:31:44,122 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:31:44,123 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:31:44,123 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:31:44,123 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:31:44,124 INFO L153 SettingsManager]: * Logic for external solver=AUFBV 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_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3713b25a83a921fe666aac85c13dc353e68d0c4544ef354673bb4c8722689bd [2023-11-23 21:31:44,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:31:44,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:31:44,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:31:44,565 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:31:44,565 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:31:44,567 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-32.i [2023-11-23 21:31:47,895 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:31:48,171 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:31:48,172 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-32.i [2023-11-23 21:31:48,180 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire/data/e4abad0cb/9456b2c8c74c4c6d8ec670cf093133fe/FLAG01851ff18 [2023-11-23 21:31:48,193 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire/data/e4abad0cb/9456b2c8c74c4c6d8ec670cf093133fe [2023-11-23 21:31:48,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:31:48,197 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:31:48,198 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:31:48,198 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:31:48,203 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:31:48,204 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:31:48" (1/1) ... [2023-11-23 21:31:48,205 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dddc210 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:48, skipping insertion in model container [2023-11-23 21:31:48,206 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:31:48" (1/1) ... [2023-11-23 21:31:48,232 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:31:48,418 WARN L240 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_d2fcdc88-3485-4f48-93bc-fecf8e02608e/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-32.i[915,928] [2023-11-23 21:31:48,485 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:31:48,513 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:31:48,529 WARN L240 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_d2fcdc88-3485-4f48-93bc-fecf8e02608e/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-32.i[915,928] [2023-11-23 21:31:48,564 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:31:48,589 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:31:48,589 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:48 WrapperNode [2023-11-23 21:31:48,590 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:31:48,591 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:31:48,591 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:31:48,591 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:31:48,598 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:48" (1/1) ... [2023-11-23 21:31:48,622 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:48" (1/1) ... [2023-11-23 21:31:48,658 INFO L138 Inliner]: procedures = 27, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 102 [2023-11-23 21:31:48,660 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:31:48,661 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:31:48,661 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:31:48,661 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:31:48,670 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:48" (1/1) ... [2023-11-23 21:31:48,671 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:48" (1/1) ... [2023-11-23 21:31:48,682 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:48" (1/1) ... [2023-11-23 21:31:48,682 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:48" (1/1) ... [2023-11-23 21:31:48,703 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:48" (1/1) ... [2023-11-23 21:31:48,714 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:48" (1/1) ... [2023-11-23 21:31:48,716 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:48" (1/1) ... [2023-11-23 21:31:48,718 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:48" (1/1) ... [2023-11-23 21:31:48,726 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:31:48,727 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:31:48,732 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:31:48,732 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:31:48,733 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:48" (1/1) ... [2023-11-23 21:31:48,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:31:48,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:31:48,763 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:31:48,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:31:48,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:31:48,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:31:48,823 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:31:48,824 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:31:48,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:31:48,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:31:48,930 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:31:48,932 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:31:49,328 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:31:49,393 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:31:49,395 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:31:49,396 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:31:49 BoogieIcfgContainer [2023-11-23 21:31:49,396 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:31:49,399 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:31:49,399 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:31:49,402 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:31:49,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:31:48" (1/3) ... [2023-11-23 21:31:49,403 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@425754c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:31:49, skipping insertion in model container [2023-11-23 21:31:49,404 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:48" (2/3) ... [2023-11-23 21:31:49,404 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@425754c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:31:49, skipping insertion in model container [2023-11-23 21:31:49,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:31:49" (3/3) ... [2023-11-23 21:31:49,406 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-32.i [2023-11-23 21:31:49,423 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:31:49,424 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:31:49,483 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:31:49,491 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@42fd593d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:31:49,492 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:31:49,497 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 25 states have internal predecessors, (34), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-23 21:31:49,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-23 21:31:49,513 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:49,514 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:31:49,514 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:31:49,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:49,521 INFO L85 PathProgramCache]: Analyzing trace with hash -2027809662, now seen corresponding path program 1 times [2023-11-23 21:31:49,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:31:49,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [354374114] [2023-11-23 21:31:49,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:49,538 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:31:49,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:31:49,544 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:31:49,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-23 21:31:49,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:49,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:31:49,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:31:50,128 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-23 21:31:50,128 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:31:50,129 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:31:50,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [354374114] [2023-11-23 21:31:50,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [354374114] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:31:50,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:31:50,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:31:50,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330407220] [2023-11-23 21:31:50,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:31:50,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:31:50,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:31:50,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:31:50,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:31:50,168 INFO L87 Difference]: Start difference. First operand has 43 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 25 states have internal predecessors, (34), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-23 21:31:50,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:31:50,349 INFO L93 Difference]: Finished difference Result 131 states and 239 transitions. [2023-11-23 21:31:50,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:31:50,354 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 98 [2023-11-23 21:31:50,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:31:50,363 INFO L225 Difference]: With dead ends: 131 [2023-11-23 21:31:50,364 INFO L226 Difference]: Without dead ends: 89 [2023-11-23 21:31:50,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:31:50,376 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 40 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:31:50,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 177 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:31:50,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-11-23 21:31:50,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 79. [2023-11-23 21:31:50,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 44 states have (on average 1.25) internal successors, (55), 44 states have internal predecessors, (55), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-23 21:31:50,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 119 transitions. [2023-11-23 21:31:50,462 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 119 transitions. Word has length 98 [2023-11-23 21:31:50,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:31:50,463 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 119 transitions. [2023-11-23 21:31:50,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-23 21:31:50,464 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 119 transitions. [2023-11-23 21:31:50,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-23 21:31:50,473 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:50,473 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:31:50,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:31:50,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:31:50,682 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:31:50,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:50,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1457811008, now seen corresponding path program 1 times [2023-11-23 21:31:50,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:31:50,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641485631] [2023-11-23 21:31:50,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:50,684 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:31:50,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:31:50,710 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:31:50,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fcdc88-3485-4f48-93bc-fecf8e02608e/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-23 21:31:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:50,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 21:31:50,845 INFO L285 TraceCheckSpWp]: Computing forward predicates...