./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-55.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_871b8a30-bf89-4958-908c-dbdb7b08b3a2/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_871b8a30-bf89-4958-908c-dbdb7b08b3a2/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_871b8a30-bf89-4958-908c-dbdb7b08b3a2/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_871b8a30-bf89-4958-908c-dbdb7b08b3a2/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-55.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_871b8a30-bf89-4958-908c-dbdb7b08b3a2/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_871b8a30-bf89-4958-908c-dbdb7b08b3a2/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 90e35651bfd9b45448f3c544aad64e7f8bfb379d8aba00be42275ca318b2d740 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:14:09,197 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:14:09,335 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_871b8a30-bf89-4958-908c-dbdb7b08b3a2/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:14:09,349 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:14:09,350 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:14:09,400 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:14:09,401 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:14:09,402 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:14:09,403 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:14:09,409 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:14:09,409 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:14:09,411 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:14:09,412 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:14:09,414 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:14:09,414 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:14:09,415 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:14:09,416 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:14:09,416 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:14:09,417 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:14:09,417 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:14:09,418 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:14:09,419 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:14:09,420 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:14:09,420 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:14:09,422 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:14:09,423 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:14:09,424 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:14:09,424 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:14:09,425 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:14:09,425 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:14:09,427 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:14:09,427 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:14:09,428 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:14:09,428 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:14:09,428 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:14:09,429 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:14:09,429 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:14:09,429 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:14:09,430 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:14:09,430 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:14:09,431 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:14:09,431 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:14:09,431 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:14:09,432 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:14:09,433 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:14:09,433 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:14:09,433 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:14:09,434 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_871b8a30-bf89-4958-908c-dbdb7b08b3a2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_871b8a30-bf89-4958-908c-dbdb7b08b3a2/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90e35651bfd9b45448f3c544aad64e7f8bfb379d8aba00be42275ca318b2d740 [2023-11-23 21:14:09,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:14:09,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:14:09,815 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:14:09,818 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:14:09,818 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:14:09,820 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_871b8a30-bf89-4958-908c-dbdb7b08b3a2/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-55.i [2023-11-23 21:14:12,960 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:14:13,158 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:14:13,159 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_871b8a30-bf89-4958-908c-dbdb7b08b3a2/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-55.i [2023-11-23 21:14:13,169 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_871b8a30-bf89-4958-908c-dbdb7b08b3a2/bin/utaipan-verify-mE87zJ7Ire/data/931a7839b/481a94faa18342f3a167bd9f7450a1f9/FLAGda891dca8 [2023-11-23 21:14:13,184 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_871b8a30-bf89-4958-908c-dbdb7b08b3a2/bin/utaipan-verify-mE87zJ7Ire/data/931a7839b/481a94faa18342f3a167bd9f7450a1f9 [2023-11-23 21:14:13,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:14:13,188 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:14:13,190 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:14:13,190 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:14:13,196 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:14:13,197 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:14:13" (1/1) ... [2023-11-23 21:14:13,198 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61ecee51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:13, skipping insertion in model container [2023-11-23 21:14:13,198 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:14:13" (1/1) ... [2023-11-23 21:14:13,229 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:14:13,390 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_871b8a30-bf89-4958-908c-dbdb7b08b3a2/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-55.i[913,926] [2023-11-23 21:14:13,437 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:14:13,449 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:14:13,475 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_871b8a30-bf89-4958-908c-dbdb7b08b3a2/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-55.i[913,926] [2023-11-23 21:14:13,504 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:14:13,521 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:14:13,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:13 WrapperNode [2023-11-23 21:14:13,522 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:14:13,523 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:14:13,524 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:14:13,524 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:14:13,532 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:13" (1/1) ... [2023-11-23 21:14:13,542 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:13" (1/1) ... [2023-11-23 21:14:13,602 INFO L138 Inliner]: procedures = 26, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 135 [2023-11-23 21:14:13,603 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:14:13,603 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:14:13,604 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:14:13,604 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:14:13,614 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:13" (1/1) ... [2023-11-23 21:14:13,620 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:13" (1/1) ... [2023-11-23 21:14:13,623 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:13" (1/1) ... [2023-11-23 21:14:13,625 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:13" (1/1) ... [2023-11-23 21:14:13,633 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:13" (1/1) ... [2023-11-23 21:14:13,637 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:13" (1/1) ... [2023-11-23 21:14:13,639 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:13" (1/1) ... [2023-11-23 21:14:13,641 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:13" (1/1) ... [2023-11-23 21:14:13,645 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:14:13,646 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:14:13,647 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:14:13,647 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:14:13,648 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:13" (1/1) ... [2023-11-23 21:14:13,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:14:13,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_871b8a30-bf89-4958-908c-dbdb7b08b3a2/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:14:13,689 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_871b8a30-bf89-4958-908c-dbdb7b08b3a2/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:14:13,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_871b8a30-bf89-4958-908c-dbdb7b08b3a2/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:14:13,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:14:13,738 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:14:13,738 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:14:13,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:14:13,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:14:13,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:14:13,814 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:14:13,816 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:14:14,196 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:14:14,407 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:14:14,408 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:14:14,409 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:14:14 BoogieIcfgContainer [2023-11-23 21:14:14,409 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:14:14,412 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:14:14,412 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:14:14,416 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:14:14,416 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:14:13" (1/3) ... [2023-11-23 21:14:14,417 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9801349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:14:14, skipping insertion in model container [2023-11-23 21:14:14,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:13" (2/3) ... [2023-11-23 21:14:14,417 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9801349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:14:14, skipping insertion in model container [2023-11-23 21:14:14,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:14:14" (3/3) ... [2023-11-23 21:14:14,419 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_normal_file-55.i [2023-11-23 21:14:14,436 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:14:14,437 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:14:14,481 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:14:14,488 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;@28805332, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:14:14,489 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:14:14,493 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-23 21:14:14,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-23 21:14:14,503 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:14:14,504 INFO L195 NwaCegarLoop]: trace histogram [12, 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 21:14:14,505 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:14:14,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:14:14,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1569430621, now seen corresponding path program 1 times [2023-11-23 21:14:14,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:14:14,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467370659] [2023-11-23 21:14:14,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:14,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:14:14,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:14:14,865 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:14:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:14:15,137 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:14:15,139 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:14:15,141 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:14:15,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:14:15,147 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:14:15,152 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:14:15,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:14:15 BoogieIcfgContainer [2023-11-23 21:14:15,259 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:14:15,261 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:14:15,261 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:14:15,261 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:14:15,262 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:14:14" (3/4) ... [2023-11-23 21:14:15,266 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:14:15,268 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:14:15,269 INFO L158 Benchmark]: Toolchain (without parser) took 2080.51ms. Allocated memory was 138.4MB in the beginning and 190.8MB in the end (delta: 52.4MB). Free memory was 78.9MB in the beginning and 150.6MB in the end (delta: -71.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:14:15,270 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 138.4MB. Free memory was 76.5MB in the beginning and 76.4MB in the end (delta: 142.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:14:15,271 INFO L158 Benchmark]: CACSL2BoogieTranslator took 332.71ms. Allocated memory was 138.4MB in the beginning and 190.8MB in the end (delta: 52.4MB). Free memory was 78.6MB in the beginning and 159.6MB in the end (delta: -81.0MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. [2023-11-23 21:14:15,272 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.41ms. Allocated memory is still 190.8MB. Free memory was 159.5MB in the beginning and 159.8MB in the end (delta: -221.8kB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. [2023-11-23 21:14:15,278 INFO L158 Benchmark]: Boogie Preprocessor took 42.11ms. Allocated memory is still 190.8MB. Free memory was 159.8MB in the beginning and 158.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:14:15,278 INFO L158 Benchmark]: RCFGBuilder took 763.08ms. Allocated memory is still 190.8MB. Free memory was 158.6MB in the beginning and 120.8MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2023-11-23 21:14:15,280 INFO L158 Benchmark]: TraceAbstraction took 847.19ms. Allocated memory is still 190.8MB. Free memory was 119.9MB in the beginning and 150.6MB in the end (delta: -30.7MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2023-11-23 21:14:15,280 INFO L158 Benchmark]: Witness Printer took 6.85ms. Allocated memory is still 190.8MB. Free memory is still 150.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:14:15,288 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 138.4MB. Free memory was 76.5MB in the beginning and 76.4MB in the end (delta: 142.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 332.71ms. Allocated memory was 138.4MB in the beginning and 190.8MB in the end (delta: 52.4MB). Free memory was 78.6MB in the beginning and 159.6MB in the end (delta: -81.0MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.41ms. Allocated memory is still 190.8MB. Free memory was 159.5MB in the beginning and 159.8MB in the end (delta: -221.8kB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.11ms. Allocated memory is still 190.8MB. Free memory was 159.8MB in the beginning and 158.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 763.08ms. Allocated memory is still 190.8MB. Free memory was 158.6MB in the beginning and 120.8MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * TraceAbstraction took 847.19ms. Allocated memory is still 190.8MB. Free memory was 119.9MB in the beginning and 150.6MB in the end (delta: -30.7MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Witness Printer took 6.85ms. Allocated memory is still 190.8MB. Free memory is still 150.6MB. There was no memory consumed. 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 someBinaryFLOATComparisonOperation at line 97, overapproximation of shiftRight at line 60, overapproximation of someBinaryArithmeticDOUBLEoperation at line 55, overapproximation of someBinaryDOUBLEComparisonOperation at line 97. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned short int var_1_1 = 10; [L23] unsigned char var_1_2 = 0; [L24] unsigned char var_1_5 = 0; [L25] double var_1_7 = 256.75; [L26] double var_1_8 = 63.5; [L27] double var_1_9 = 1.8; [L28] double var_1_10 = 0.25; [L29] double var_1_11 = 16.5; [L30] signed long int var_1_12 = -5; [L31] unsigned char var_1_14 = 128; [L32] float var_1_15 = 4.6; [L33] unsigned long int var_1_16 = 500; [L34] unsigned char var_1_17 = 2; [L35] unsigned char var_1_18 = 100; [L36] signed long int last_1_var_1_12 = -5; [L37] unsigned char last_1_var_1_17 = 2; [L101] isInitial = 1 [L102] FCALL initially() [L103] COND TRUE 1 [L104] CALL updateLastVariables() [L93] last_1_var_1_12 = var_1_12 [L94] last_1_var_1_17 = var_1_17 [L104] RET updateLastVariables() [L105] CALL updateVariables() [L71] var_1_2 = __VERIFIER_nondet_uchar() [L72] CALL assume_abort_if_not(var_1_2 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=-5, last_1_var_1_17=2, var_1_10=1/4, var_1_11=33/2, var_1_12=-5, var_1_14=128, var_1_15=23/5, var_1_16=500, var_1_17=2, var_1_18=100, var_1_1=10, var_1_5=0, var_1_7=1027/4, var_1_8=127/2, var_1_9=9/5] [L20] COND FALSE !(!cond) [L72] RET assume_abort_if_not(var_1_2 >= 0) VAL [isInitial=1, last_1_var_1_12=-5, last_1_var_1_17=2, var_1_10=1/4, var_1_11=33/2, var_1_12=-5, var_1_14=128, var_1_15=23/5, var_1_16=500, var_1_17=2, var_1_18=100, var_1_1=10, var_1_5=0, var_1_7=1027/4, var_1_8=127/2, var_1_9=9/5] [L73] CALL assume_abort_if_not(var_1_2 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=-5, last_1_var_1_17=2, var_1_10=1/4, var_1_11=33/2, var_1_12=-5, var_1_14=128, var_1_15=23/5, var_1_16=500, var_1_17=2, var_1_18=100, var_1_1=10, var_1_2=1, var_1_5=0, var_1_7=1027/4, var_1_8=127/2, var_1_9=9/5] [L20] COND FALSE !(!cond) [L73] RET assume_abort_if_not(var_1_2 <= 1) VAL [isInitial=1, last_1_var_1_12=-5, last_1_var_1_17=2, var_1_10=1/4, var_1_11=33/2, var_1_12=-5, var_1_14=128, var_1_15=23/5, var_1_16=500, var_1_17=2, var_1_18=100, var_1_1=10, var_1_2=1, var_1_5=0, var_1_7=1027/4, var_1_8=127/2, var_1_9=9/5] [L74] var_1_5 = __VERIFIER_nondet_uchar() [L75] CALL assume_abort_if_not(var_1_5 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=-5, last_1_var_1_17=2, var_1_10=1/4, var_1_11=33/2, var_1_12=-5, var_1_14=128, var_1_15=23/5, var_1_16=500, var_1_17=2, var_1_18=100, var_1_1=10, var_1_2=1, var_1_7=1027/4, var_1_8=127/2, var_1_9=9/5] [L20] COND FALSE !(!cond) [L75] RET assume_abort_if_not(var_1_5 >= 0) VAL [isInitial=1, last_1_var_1_12=-5, last_1_var_1_17=2, var_1_10=1/4, var_1_11=33/2, var_1_12=-5, var_1_14=128, var_1_15=23/5, var_1_16=500, var_1_17=2, var_1_18=100, var_1_1=10, var_1_2=1, var_1_7=1027/4, var_1_8=127/2, var_1_9=9/5] [L76] CALL assume_abort_if_not(var_1_5 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=-5, last_1_var_1_17=2, var_1_10=1/4, var_1_11=33/2, var_1_12=-5, var_1_14=128, var_1_15=23/5, var_1_16=500, var_1_17=2, var_1_18=100, var_1_1=10, var_1_2=1, var_1_5=1, var_1_7=1027/4, var_1_8=127/2, var_1_9=9/5] [L20] COND FALSE !(!cond) [L76] RET assume_abort_if_not(var_1_5 <= 1) VAL [isInitial=1, last_1_var_1_12=-5, last_1_var_1_17=2, var_1_10=1/4, var_1_11=33/2, var_1_12=-5, var_1_14=128, var_1_15=23/5, var_1_16=500, var_1_17=2, var_1_18=100, var_1_1=10, var_1_2=1, var_1_5=1, var_1_7=1027/4, var_1_8=127/2, var_1_9=9/5] [L77] var_1_8 = __VERIFIER_nondet_double() [L78] CALL assume_abort_if_not((var_1_8 >= 0.0F && var_1_8 <= -1.0e-20F) || (var_1_8 <= 2305843.009213691390e+12F && var_1_8 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=-5, last_1_var_1_17=2, var_1_10=1/4, var_1_11=33/2, var_1_12=-5, var_1_14=128, var_1_15=23/5, var_1_16=500, var_1_17=2, var_1_18=100, var_1_1=10, var_1_2=1, var_1_5=1, var_1_7=1027/4, var_1_9=9/5] [L20] COND FALSE !(!cond) [L78] RET assume_abort_if_not((var_1_8 >= 0.0F && var_1_8 <= -1.0e-20F) || (var_1_8 <= 2305843.009213691390e+12F && var_1_8 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_12=-5, last_1_var_1_17=2, var_1_10=1/4, var_1_11=33/2, var_1_12=-5, var_1_14=128, var_1_15=23/5, var_1_16=500, var_1_17=2, var_1_18=100, var_1_1=10, var_1_2=1, var_1_5=1, var_1_7=1027/4, var_1_9=9/5] [L79] var_1_9 = __VERIFIER_nondet_double() [L80] CALL assume_abort_if_not((var_1_9 >= 0.0F && var_1_9 <= -1.0e-20F) || (var_1_9 <= 2305843.009213691390e+12F && var_1_9 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=-5, last_1_var_1_17=2, var_1_10=1/4, var_1_11=33/2, var_1_12=-5, var_1_14=128, var_1_15=23/5, var_1_16=500, var_1_17=2, var_1_18=100, var_1_1=10, var_1_2=1, var_1_5=1, var_1_7=1027/4] [L20] COND FALSE !(!cond) [L80] RET assume_abort_if_not((var_1_9 >= 0.0F && var_1_9 <= -1.0e-20F) || (var_1_9 <= 2305843.009213691390e+12F && var_1_9 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_12=-5, last_1_var_1_17=2, var_1_10=1/4, var_1_11=33/2, var_1_12=-5, var_1_14=128, var_1_15=23/5, var_1_16=500, var_1_17=2, var_1_18=100, var_1_1=10, var_1_2=1, var_1_5=1, var_1_7=1027/4] [L81] var_1_10 = __VERIFIER_nondet_double() [L82] CALL assume_abort_if_not((var_1_10 >= 0.0F && var_1_10 <= -1.0e-20F) || (var_1_10 <= 4611686.018427382800e+12F && var_1_10 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=-5, last_1_var_1_17=2, var_1_11=33/2, var_1_12=-5, var_1_14=128, var_1_15=23/5, var_1_16=500, var_1_17=2, var_1_18=100, var_1_1=10, var_1_2=1, var_1_5=1, var_1_7=1027/4] [L20] COND FALSE !(!cond) [L82] RET assume_abort_if_not((var_1_10 >= 0.0F && var_1_10 <= -1.0e-20F) || (var_1_10 <= 4611686.018427382800e+12F && var_1_10 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_12=-5, last_1_var_1_17=2, var_1_11=33/2, var_1_12=-5, var_1_14=128, var_1_15=23/5, var_1_16=500, var_1_17=2, var_1_18=100, var_1_1=10, var_1_2=1, var_1_5=1, var_1_7=1027/4] [L83] var_1_11 = __VERIFIER_nondet_double() [L84] CALL assume_abort_if_not((var_1_11 >= 0.0F && var_1_11 <= -1.0e-20F) || (var_1_11 <= 9223372.036854765600e+12F && var_1_11 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=-5, last_1_var_1_17=2, var_1_12=-5, var_1_14=128, var_1_15=23/5, var_1_16=500, var_1_17=2, var_1_18=100, var_1_1=10, var_1_2=1, var_1_5=1, var_1_7=1027/4] [L20] COND FALSE !(!cond) [L84] RET assume_abort_if_not((var_1_11 >= 0.0F && var_1_11 <= -1.0e-20F) || (var_1_11 <= 9223372.036854765600e+12F && var_1_11 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_12=-5, last_1_var_1_17=2, var_1_12=-5, var_1_14=128, var_1_15=23/5, var_1_16=500, var_1_17=2, var_1_18=100, var_1_1=10, var_1_2=1, var_1_5=1, var_1_7=1027/4] [L85] var_1_14 = __VERIFIER_nondet_uchar() [L86] CALL assume_abort_if_not(var_1_14 >= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=-5, last_1_var_1_17=2, var_1_12=-5, var_1_14=255, var_1_15=23/5, var_1_16=500, var_1_17=2, var_1_18=100, var_1_1=10, var_1_2=1, var_1_5=1, var_1_7=1027/4] [L20] COND FALSE !(!cond) [L86] RET assume_abort_if_not(var_1_14 >= 127) VAL [isInitial=1, last_1_var_1_12=-5, last_1_var_1_17=2, var_1_12=-5, var_1_14=255, var_1_15=23/5, var_1_16=500, var_1_17=2, var_1_18=100, var_1_1=10, var_1_2=1, var_1_5=1, var_1_7=1027/4] [L87] CALL assume_abort_if_not(var_1_14 <= 255) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=-5, last_1_var_1_17=2, var_1_12=-5, var_1_14=255, var_1_15=23/5, var_1_16=500, var_1_17=2, var_1_18=100, var_1_1=10, var_1_2=1, var_1_5=1, var_1_7=1027/4] [L20] COND FALSE !(!cond) [L87] RET assume_abort_if_not(var_1_14 <= 255) VAL [isInitial=1, last_1_var_1_12=-5, last_1_var_1_17=2, var_1_12=-5, var_1_14=255, var_1_15=23/5, var_1_16=500, var_1_17=2, var_1_18=100, var_1_1=10, var_1_2=1, var_1_5=1, var_1_7=1027/4] [L88] var_1_18 = __VERIFIER_nondet_uchar() [L89] CALL assume_abort_if_not(var_1_18 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=-5, last_1_var_1_17=2, var_1_12=-5, var_1_14=255, var_1_15=23/5, var_1_16=500, var_1_17=2, var_1_1=10, var_1_2=1, var_1_5=1, var_1_7=1027/4] [L20] COND FALSE !(!cond) [L89] RET assume_abort_if_not(var_1_18 >= 0) VAL [isInitial=1, last_1_var_1_12=-5, last_1_var_1_17=2, var_1_12=-5, var_1_14=255, var_1_15=23/5, var_1_16=500, var_1_17=2, var_1_1=10, var_1_2=1, var_1_5=1, var_1_7=1027/4] [L90] CALL assume_abort_if_not(var_1_18 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=-5, last_1_var_1_17=2, var_1_12=-5, var_1_14=255, var_1_15=23/5, var_1_16=500, var_1_17=2, var_1_18=250, var_1_1=10, var_1_2=1, var_1_5=1, var_1_7=1027/4] [L20] COND FALSE !(!cond) [L90] RET assume_abort_if_not(var_1_18 <= 254) VAL [isInitial=1, last_1_var_1_12=-5, last_1_var_1_17=2, var_1_12=-5, var_1_14=255, var_1_15=23/5, var_1_16=500, var_1_17=2, var_1_18=250, var_1_1=10, var_1_2=1, var_1_5=1, var_1_7=1027/4] [L105] RET updateVariables() [L106] CALL step() [L41] unsigned char stepLocal_1 = last_1_var_1_12 >= last_1_var_1_17; [L42] signed long int stepLocal_0 = last_1_var_1_17; [L43] COND TRUE \read(var_1_2) [L44] COND FALSE !(stepLocal_1 && var_1_5) [L54] COND TRUE \read(var_1_2) [L55] var_1_7 = (((var_1_8 + var_1_9) + var_1_10) - var_1_11) [L57] var_1_15 = var_1_8 [L58] var_1_16 = var_1_14 [L59] var_1_17 = var_1_18 [L60] EXPR -4 >> var_1_1 [L60] EXPR (((-4 >> var_1_1)) < (var_1_1)) ? ((-4 >> var_1_1)) : (var_1_1) [L60] EXPR -4 >> var_1_1 [L60] EXPR (((-4 >> var_1_1)) < (var_1_1)) ? ((-4 >> var_1_1)) : (var_1_1) [L60] signed long int stepLocal_3 = ((((-4 >> var_1_1)) < (var_1_1)) ? ((-4 >> var_1_1)) : (var_1_1)); [L61] signed long int stepLocal_2 = var_1_1 / -8; [L62] COND FALSE !((~ var_1_17) <= stepLocal_3) [L67] var_1_12 = (var_1_17 - var_1_14) [L106] RET step() [L107] CALL, EXPR property() [L97] EXPR ((var_1_2 ? (((last_1_var_1_12 >= last_1_var_1_17) && var_1_5) ? ((last_1_var_1_12 >= last_1_var_1_17) ? (var_1_1 == ((unsigned short int) 5)) : (var_1_1 == ((unsigned short int) ((((25) < (last_1_var_1_17)) ? (25) : (last_1_var_1_17)))))) : 1) : (var_1_1 == ((unsigned short int) last_1_var_1_17))) && (var_1_2 ? (var_1_7 == ((double) (((var_1_8 + var_1_9) + var_1_10) - var_1_11))) : 1)) && (((~ var_1_17) <= (((((-4 >> var_1_1)) < (var_1_1)) ? ((-4 >> var_1_1)) : (var_1_1)))) ? (((var_1_14 - 64) < (var_1_1 / -8)) ? (var_1_12 == ((signed long int) var_1_1)) : 1) : (var_1_12 == ((signed long int) (var_1_17 - var_1_14)))) [L97] EXPR -4 >> var_1_1 [L97] EXPR (((-4 >> var_1_1)) < (var_1_1)) ? ((-4 >> var_1_1)) : (var_1_1) [L97] EXPR -4 >> var_1_1 [L97] EXPR (((-4 >> var_1_1)) < (var_1_1)) ? ((-4 >> var_1_1)) : (var_1_1) [L97] EXPR ((var_1_2 ? (((last_1_var_1_12 >= last_1_var_1_17) && var_1_5) ? ((last_1_var_1_12 >= last_1_var_1_17) ? (var_1_1 == ((unsigned short int) 5)) : (var_1_1 == ((unsigned short int) ((((25) < (last_1_var_1_17)) ? (25) : (last_1_var_1_17)))))) : 1) : (var_1_1 == ((unsigned short int) last_1_var_1_17))) && (var_1_2 ? (var_1_7 == ((double) (((var_1_8 + var_1_9) + var_1_10) - var_1_11))) : 1)) && (((~ var_1_17) <= (((((-4 >> var_1_1)) < (var_1_1)) ? ((-4 >> var_1_1)) : (var_1_1)))) ? (((var_1_14 - 64) < (var_1_1 / -8)) ? (var_1_12 == ((signed long int) var_1_1)) : 1) : (var_1_12 == ((signed long int) (var_1_17 - var_1_14)))) [L97-L98] return (((((var_1_2 ? (((last_1_var_1_12 >= last_1_var_1_17) && var_1_5) ? ((last_1_var_1_12 >= last_1_var_1_17) ? (var_1_1 == ((unsigned short int) 5)) : (var_1_1 == ((unsigned short int) ((((25) < (last_1_var_1_17)) ? (25) : (last_1_var_1_17)))))) : 1) : (var_1_1 == ((unsigned short int) last_1_var_1_17))) && (var_1_2 ? (var_1_7 == ((double) (((var_1_8 + var_1_9) + var_1_10) - var_1_11))) : 1)) && (((~ var_1_17) <= (((((-4 >> var_1_1)) < (var_1_1)) ? ((-4 >> var_1_1)) : (var_1_1)))) ? (((var_1_14 - 64) < (var_1_1 / -8)) ? (var_1_12 == ((signed long int) var_1_1)) : 1) : (var_1_12 == ((signed long int) (var_1_17 - var_1_14))))) && (var_1_15 == ((float) var_1_8))) && (var_1_16 == ((unsigned long int) var_1_14))) && (var_1_17 == ((unsigned char) var_1_18)) ; [L107] RET, EXPR property() [L107] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_12=-5, last_1_var_1_17=2, var_1_12=-5, var_1_14=255, var_1_15=505, var_1_16=255, var_1_17=250, var_1_18=250, var_1_1=10, var_1_2=1, var_1_5=1, var_1_7=1027/4, var_1_8=505] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_12=-5, last_1_var_1_17=2, var_1_12=-5, var_1_14=255, var_1_15=505, var_1_16=255, var_1_17=250, var_1_18=250, var_1_1=10, var_1_2=1, var_1_5=1, var_1_7=1027/4, var_1_8=505] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 12, 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=29occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 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 21:14:15,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_871b8a30-bf89-4958-908c-dbdb7b08b3a2/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_871b8a30-bf89-4958-908c-dbdb7b08b3a2/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_871b8a30-bf89-4958-908c-dbdb7b08b3a2/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_871b8a30-bf89-4958-908c-dbdb7b08b3a2/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_871b8a30-bf89-4958-908c-dbdb7b08b3a2/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-55.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_871b8a30-bf89-4958-908c-dbdb7b08b3a2/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_871b8a30-bf89-4958-908c-dbdb7b08b3a2/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 90e35651bfd9b45448f3c544aad64e7f8bfb379d8aba00be42275ca318b2d740 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:14:18,023 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:14:18,110 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_871b8a30-bf89-4958-908c-dbdb7b08b3a2/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-23 21:14:18,116 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:14:18,117 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:14:18,151 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:14:18,152 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:14:18,153 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:14:18,154 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:14:18,159 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:14:18,159 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:14:18,160 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:14:18,160 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:14:18,162 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:14:18,162 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:14:18,163 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:14:18,164 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:14:18,165 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:14:18,165 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:14:18,166 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:14:18,167 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:14:18,167 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:14:18,168 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:14:18,168 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:14:18,169 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:14:18,169 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:14:18,169 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:14:18,170 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:14:18,170 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:14:18,171 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:14:18,172 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:14:18,172 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:14:18,173 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:14:18,173 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:14:18,173 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:14:18,174 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:14:18,174 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:14:18,174 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:14:18,175 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:14:18,176 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:14:18,176 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:14:18,176 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:14:18,176 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:14:18,177 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:14:18,177 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_871b8a30-bf89-4958-908c-dbdb7b08b3a2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_871b8a30-bf89-4958-908c-dbdb7b08b3a2/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90e35651bfd9b45448f3c544aad64e7f8bfb379d8aba00be42275ca318b2d740 [2023-11-23 21:14:18,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:14:18,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:14:18,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:14:18,680 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:14:18,681 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:14:18,682 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_871b8a30-bf89-4958-908c-dbdb7b08b3a2/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-55.i [2023-11-23 21:14:21,853 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:14:22,141 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:14:22,143 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_871b8a30-bf89-4958-908c-dbdb7b08b3a2/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-55.i [2023-11-23 21:14:22,158 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_871b8a30-bf89-4958-908c-dbdb7b08b3a2/bin/utaipan-verify-mE87zJ7Ire/data/646da5daa/5d5dbbe217f44cc0bcd7d6a91c279e87/FLAGa0fac0fb5 [2023-11-23 21:14:22,442 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_871b8a30-bf89-4958-908c-dbdb7b08b3a2/bin/utaipan-verify-mE87zJ7Ire/data/646da5daa/5d5dbbe217f44cc0bcd7d6a91c279e87 [2023-11-23 21:14:22,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:14:22,453 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:14:22,455 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:14:22,455 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:14:22,462 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:14:22,463 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:14:22" (1/1) ... [2023-11-23 21:14:22,464 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@428ba8c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:22, skipping insertion in model container [2023-11-23 21:14:22,464 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:14:22" (1/1) ... [2023-11-23 21:14:22,492 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:14:22,656 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_871b8a30-bf89-4958-908c-dbdb7b08b3a2/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-55.i[913,926] [2023-11-23 21:14:22,702 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:14:22,719 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:14:22,733 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_871b8a30-bf89-4958-908c-dbdb7b08b3a2/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-55.i[913,926] [2023-11-23 21:14:22,757 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:14:22,777 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:14:22,778 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:22 WrapperNode [2023-11-23 21:14:22,778 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:14:22,779 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:14:22,779 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:14:22,779 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:14:22,787 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:22" (1/1) ... [2023-11-23 21:14:22,800 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:22" (1/1) ... [2023-11-23 21:14:22,828 INFO L138 Inliner]: procedures = 27, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 107 [2023-11-23 21:14:22,829 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:14:22,830 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:14:22,830 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:14:22,830 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:14:22,840 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:22" (1/1) ... [2023-11-23 21:14:22,840 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:22" (1/1) ... [2023-11-23 21:14:22,844 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:22" (1/1) ... [2023-11-23 21:14:22,845 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:22" (1/1) ... [2023-11-23 21:14:22,855 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:22" (1/1) ... [2023-11-23 21:14:22,859 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:22" (1/1) ... [2023-11-23 21:14:22,862 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:22" (1/1) ... [2023-11-23 21:14:22,864 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:22" (1/1) ... [2023-11-23 21:14:22,868 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:14:22,869 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:14:22,869 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:14:22,869 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:14:22,877 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:22" (1/1) ... [2023-11-23 21:14:22,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:14:22,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_871b8a30-bf89-4958-908c-dbdb7b08b3a2/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:14:22,926 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_871b8a30-bf89-4958-908c-dbdb7b08b3a2/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:14:22,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_871b8a30-bf89-4958-908c-dbdb7b08b3a2/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:14:22,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:14:22,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:14:22,982 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:14:22,982 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:14:22,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:14:22,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:14:23,111 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:14:23,115 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:14:25,901 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:14:25,957 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:14:25,957 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:14:25,958 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:14:25 BoogieIcfgContainer [2023-11-23 21:14:25,958 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:14:25,960 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:14:25,960 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:14:25,963 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:14:25,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:14:22" (1/3) ... [2023-11-23 21:14:25,964 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e23d15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:14:25, skipping insertion in model container [2023-11-23 21:14:25,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:22" (2/3) ... [2023-11-23 21:14:25,965 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e23d15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:14:25, skipping insertion in model container [2023-11-23 21:14:25,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:14:25" (3/3) ... [2023-11-23 21:14:25,967 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_normal_file-55.i [2023-11-23 21:14:25,986 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:14:25,986 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:14:26,036 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:14:26,043 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;@6072cc27, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:14:26,043 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:14:26,048 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 25 states have (on average 1.44) internal successors, (36), 26 states have internal predecessors, (36), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-23 21:14:26,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-23 21:14:26,059 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:14:26,060 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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 21:14:26,061 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:14:26,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:14:26,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1113787404, now seen corresponding path program 1 times [2023-11-23 21:14:26,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:14:26,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [50896076] [2023-11-23 21:14:26,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:26,085 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 21:14:26,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_871b8a30-bf89-4958-908c-dbdb7b08b3a2/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:14:26,091 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_871b8a30-bf89-4958-908c-dbdb7b08b3a2/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 21:14:26,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_871b8a30-bf89-4958-908c-dbdb7b08b3a2/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 21:14:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:14:26,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 21:14:26,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:14:26,661 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2023-11-23 21:14:26,663 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:14:26,664 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:14:26,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [50896076] [2023-11-23 21:14:26,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [50896076] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:14:26,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:14:26,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:14:26,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733686947] [2023-11-23 21:14:26,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:14:26,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:14:26,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:14:26,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:14:26,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:14:26,720 INFO L87 Difference]: Start difference. First operand has 40 states, 25 states have (on average 1.44) internal successors, (36), 26 states have internal predecessors, (36), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 21:14:28,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:14:28,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:14:28,888 INFO L93 Difference]: Finished difference Result 77 states and 130 transitions. [2023-11-23 21:14:28,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:14:28,915 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 77 [2023-11-23 21:14:28,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:14:28,921 INFO L225 Difference]: With dead ends: 77 [2023-11-23 21:14:28,921 INFO L226 Difference]: Without dead ends: 38 [2023-11-23 21:14:28,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:14:28,928 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:14:28,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2023-11-23 21:14:28,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-23 21:14:28,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-11-23 21:14:28,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-23 21:14:28,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 55 transitions. [2023-11-23 21:14:28,974 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 55 transitions. Word has length 77 [2023-11-23 21:14:28,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:14:28,975 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 55 transitions. [2023-11-23 21:14:28,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 21:14:28,975 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 55 transitions. [2023-11-23 21:14:28,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-23 21:14:28,980 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:14:28,980 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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 21:14:28,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_871b8a30-bf89-4958-908c-dbdb7b08b3a2/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 21:14:29,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_871b8a30-bf89-4958-908c-dbdb7b08b3a2/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 21:14:29,191 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:14:29,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:14:29,192 INFO L85 PathProgramCache]: Analyzing trace with hash 866099988, now seen corresponding path program 1 times [2023-11-23 21:14:29,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:14:29,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [314538016] [2023-11-23 21:14:29,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:29,193 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 21:14:29,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_871b8a30-bf89-4958-908c-dbdb7b08b3a2/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:14:29,236 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_871b8a30-bf89-4958-908c-dbdb7b08b3a2/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 21:14:29,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_871b8a30-bf89-4958-908c-dbdb7b08b3a2/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 21:14:29,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:14:29,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:14:29,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:14:29,739 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-23 21:14:29,741 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:14:29,743 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:14:29,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [314538016] [2023-11-23 21:14:29,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [314538016] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:14:29,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:14:29,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:14:29,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795111285] [2023-11-23 21:14:29,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:14:29,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:14:29,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:14:29,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:14:29,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:14:29,750 INFO L87 Difference]: Start difference. First operand 38 states and 55 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 21:14:31,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:14:33,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:14:35,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:14:36,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:14:36,283 INFO L93 Difference]: Finished difference Result 85 states and 122 transitions. [2023-11-23 21:14:36,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:14:36,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 77 [2023-11-23 21:14:36,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:14:36,310 INFO L225 Difference]: With dead ends: 85 [2023-11-23 21:14:36,310 INFO L226 Difference]: Without dead ends: 48 [2023-11-23 21:14:36,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:14:36,312 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 11 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:14:36,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 97 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 3 Unknown, 0 Unchecked, 6.5s Time] [2023-11-23 21:14:36,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-11-23 21:14:36,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 39. [2023-11-23 21:14:36,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-23 21:14:36,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 56 transitions. [2023-11-23 21:14:36,328 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 56 transitions. Word has length 77 [2023-11-23 21:14:36,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:14:36,331 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 56 transitions. [2023-11-23 21:14:36,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 21:14:36,335 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 56 transitions. [2023-11-23 21:14:36,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-23 21:14:36,339 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:14:36,339 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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 21:14:36,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_871b8a30-bf89-4958-908c-dbdb7b08b3a2/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)] Forceful destruction successful, exit code 0 [2023-11-23 21:14:36,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_871b8a30-bf89-4958-908c-dbdb7b08b3a2/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 21:14:36,540 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:14:36,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:14:36,541 INFO L85 PathProgramCache]: Analyzing trace with hash 923358290, now seen corresponding path program 1 times [2023-11-23 21:14:36,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:14:36,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1572756987] [2023-11-23 21:14:36,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:36,542 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 21:14:36,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_871b8a30-bf89-4958-908c-dbdb7b08b3a2/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:14:36,544 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_871b8a30-bf89-4958-908c-dbdb7b08b3a2/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 21:14:36,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_871b8a30-bf89-4958-908c-dbdb7b08b3a2/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 (4)] Waiting until timeout for monitored process [2023-11-23 21:14:36,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:14:36,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-23 21:14:36,919 INFO L285 TraceCheckSpWp]: Computing forward predicates...