./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test24-1.c --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_97bc0e6b-aed2-4d09-8eae-cc09388b7fe6/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bc0e6b-aed2-4d09-8eae-cc09388b7fe6/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_97bc0e6b-aed2-4d09-8eae-cc09388b7fe6/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bc0e6b-aed2-4d09-8eae-cc09388b7fe6/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test24-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bc0e6b-aed2-4d09-8eae-cc09388b7fe6/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_97bc0e6b-aed2-4d09-8eae-cc09388b7fe6/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 61e163c7079e2ec105ad677de51f27ac7eccc49ef492909c4fa51ebc02ead9b7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:15:04,188 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:15:04,256 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bc0e6b-aed2-4d09-8eae-cc09388b7fe6/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:15:04,262 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:15:04,263 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:15:04,288 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:15:04,289 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:15:04,289 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:15:04,290 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:15:04,291 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:15:04,292 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:15:04,292 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:15:04,293 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:15:04,294 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:15:04,295 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:15:04,295 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:15:04,296 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:15:04,297 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:15:04,297 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:15:04,298 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:15:04,299 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:15:04,300 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:15:04,301 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:15:04,301 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:15:04,302 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:15:04,303 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:15:04,303 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:15:04,304 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:15:04,305 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:15:04,305 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:15:04,306 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:15:04,306 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:15:04,307 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:15:04,307 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:15:04,307 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:15:04,308 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:15:04,308 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:15:04,309 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:15:04,309 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:15:04,309 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:15:04,310 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:15:04,310 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:15:04,311 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:15:04,311 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:15:04,311 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:15:04,312 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:15:04,312 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:15:04,312 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_97bc0e6b-aed2-4d09-8eae-cc09388b7fe6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bc0e6b-aed2-4d09-8eae-cc09388b7fe6/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 61e163c7079e2ec105ad677de51f27ac7eccc49ef492909c4fa51ebc02ead9b7 [2023-11-23 21:15:04,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:15:04,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:15:04,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:15:04,587 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:15:04,588 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:15:04,589 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bc0e6b-aed2-4d09-8eae-cc09388b7fe6/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-regression/test24-1.c [2023-11-23 21:15:07,751 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:15:07,949 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:15:07,949 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bc0e6b-aed2-4d09-8eae-cc09388b7fe6/sv-benchmarks/c/ldv-regression/test24-1.c [2023-11-23 21:15:07,957 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bc0e6b-aed2-4d09-8eae-cc09388b7fe6/bin/utaipan-verify-mE87zJ7Ire/data/003b91504/50d38fed9bea47719df4777d9aa593a7/FLAG33ff404bd [2023-11-23 21:15:07,970 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bc0e6b-aed2-4d09-8eae-cc09388b7fe6/bin/utaipan-verify-mE87zJ7Ire/data/003b91504/50d38fed9bea47719df4777d9aa593a7 [2023-11-23 21:15:07,973 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:15:07,974 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:15:07,976 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:15:07,976 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:15:07,982 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:15:07,983 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:15:07" (1/1) ... [2023-11-23 21:15:07,984 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46be18b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:07, skipping insertion in model container [2023-11-23 21:15:07,984 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:15:07" (1/1) ... [2023-11-23 21:15:08,006 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:15:08,153 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_97bc0e6b-aed2-4d09-8eae-cc09388b7fe6/sv-benchmarks/c/ldv-regression/test24-1.c[704,717] [2023-11-23 21:15:08,157 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:15:08,165 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:15:08,181 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_97bc0e6b-aed2-4d09-8eae-cc09388b7fe6/sv-benchmarks/c/ldv-regression/test24-1.c[704,717] [2023-11-23 21:15:08,182 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:15:08,194 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:15:08,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:08 WrapperNode [2023-11-23 21:15:08,194 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:15:08,196 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:15:08,196 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:15:08,196 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:15:08,203 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:08" (1/1) ... [2023-11-23 21:15:08,209 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:08" (1/1) ... [2023-11-23 21:15:08,225 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 59 [2023-11-23 21:15:08,226 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:15:08,226 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:15:08,227 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:15:08,227 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:15:08,235 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:08" (1/1) ... [2023-11-23 21:15:08,236 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:08" (1/1) ... [2023-11-23 21:15:08,238 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:08" (1/1) ... [2023-11-23 21:15:08,238 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:08" (1/1) ... [2023-11-23 21:15:08,243 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:08" (1/1) ... [2023-11-23 21:15:08,246 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:08" (1/1) ... [2023-11-23 21:15:08,247 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:08" (1/1) ... [2023-11-23 21:15:08,248 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:08" (1/1) ... [2023-11-23 21:15:08,250 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:15:08,251 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:15:08,251 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:15:08,251 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:15:08,252 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:08" (1/1) ... [2023-11-23 21:15:08,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:15:08,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bc0e6b-aed2-4d09-8eae-cc09388b7fe6/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:15:08,298 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bc0e6b-aed2-4d09-8eae-cc09388b7fe6/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:15:08,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bc0e6b-aed2-4d09-8eae-cc09388b7fe6/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:15:08,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:15:08,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:15:08,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:15:08,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:15:08,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:15:08,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:15:08,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:15:08,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:15:08,399 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:15:08,401 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:15:08,531 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:15:08,566 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:15:08,566 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:15:08,568 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:15:08 BoogieIcfgContainer [2023-11-23 21:15:08,568 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:15:08,571 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:15:08,571 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:15:08,574 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:15:08,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:15:07" (1/3) ... [2023-11-23 21:15:08,575 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501db6d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:15:08, skipping insertion in model container [2023-11-23 21:15:08,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:08" (2/3) ... [2023-11-23 21:15:08,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501db6d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:15:08, skipping insertion in model container [2023-11-23 21:15:08,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:15:08" (3/3) ... [2023-11-23 21:15:08,577 INFO L112 eAbstractionObserver]: Analyzing ICFG test24-1.c [2023-11-23 21:15:08,596 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:15:08,597 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:15:08,639 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:15:08,646 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;@16fdef42, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:15:08,646 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:15:08,650 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:08,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 21:15:08,656 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:08,657 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-23 21:15:08,657 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:15:08,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:08,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1980571804, now seen corresponding path program 1 times [2023-11-23 21:15:08,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:08,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836794894] [2023-11-23 21:15:08,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:08,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:08,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:08,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:08,821 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:08,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836794894] [2023-11-23 21:15:08,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836794894] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:08,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:08,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:15:08,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262229164] [2023-11-23 21:15:08,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:08,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:15:08,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:08,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:15:08,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:15:08,858 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:08,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:08,882 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2023-11-23 21:15:08,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:15:08,884 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-23 21:15:08,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:08,891 INFO L225 Difference]: With dead ends: 18 [2023-11-23 21:15:08,891 INFO L226 Difference]: Without dead ends: 8 [2023-11-23 21:15:08,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 21:15:08,897 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:08,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:15:08,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2023-11-23 21:15:08,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-11-23 21:15:08,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:08,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-11-23 21:15:08,925 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2023-11-23 21:15:08,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:08,925 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-11-23 21:15:08,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:08,926 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-11-23 21:15:08,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 21:15:08,926 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:08,926 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:15:08,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:15:08,927 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:15:08,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:08,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1261016426, now seen corresponding path program 1 times [2023-11-23 21:15:08,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:08,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474328967] [2023-11-23 21:15:08,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:08,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:09,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:09,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:09,379 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:09,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474328967] [2023-11-23 21:15:09,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474328967] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:09,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:09,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:15:09,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995704899] [2023-11-23 21:15:09,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:09,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:15:09,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:09,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:15:09,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:15:09,384 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:09,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:09,440 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-11-23 21:15:09,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:15:09,441 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-23 21:15:09,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:09,441 INFO L225 Difference]: With dead ends: 14 [2023-11-23 21:15:09,441 INFO L226 Difference]: Without dead ends: 10 [2023-11-23 21:15:09,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 21:15:09,443 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 1 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:09,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 8 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:15:09,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-11-23 21:15:09,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-11-23 21:15:09,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:09,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2023-11-23 21:15:09,448 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2023-11-23 21:15:09,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:09,448 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2023-11-23 21:15:09,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:09,449 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2023-11-23 21:15:09,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 21:15:09,449 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:09,449 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:15:09,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:15:09,450 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:15:09,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:09,451 INFO L85 PathProgramCache]: Analyzing trace with hash 688009029, now seen corresponding path program 1 times [2023-11-23 21:15:09,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:09,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219620329] [2023-11-23 21:15:09,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:09,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:09,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:09,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:09,762 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:09,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219620329] [2023-11-23 21:15:09,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219620329] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:15:09,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550335760] [2023-11-23 21:15:09,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:09,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:15:09,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bc0e6b-aed2-4d09-8eae-cc09388b7fe6/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:15:09,766 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bc0e6b-aed2-4d09-8eae-cc09388b7fe6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:15:09,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bc0e6b-aed2-4d09-8eae-cc09388b7fe6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:15:09,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:09,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-23 21:15:09,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:15:10,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 1 [2023-11-23 21:15:10,238 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:15:10,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 12 [2023-11-23 21:15:10,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:10,260 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:15:10,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:10,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550335760] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:15:10,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [277892446] [2023-11-23 21:15:10,354 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-23 21:15:10,355 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:15:10,359 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:15:10,365 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:15:10,373 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:15:11,068 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:15:11,374 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '136#(and (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~ad2~0#1.base|) (<= 2 |ULTIMATE.start_main_~#ad1~0#1.base|) (<= 2 |ULTIMATE.start_main_~pa~0#1.base|) (not (= |ULTIMATE.start_main_~i~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#ad1~0#1.base|) (* |ULTIMATE.start_main_~i~0#1| 8)))) (<= (select (select |#memory_int| |ULTIMATE.start_main_~pa~0#1.base|) |ULTIMATE.start_main_~pa~0#1.offset|) |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~ad2~0#1.offset| 0) (= |ULTIMATE.start_main_~#ad1~0#1.offset| 0) (= 0 |ULTIMATE.start_check_#res#1|))' at error location [2023-11-23 21:15:11,374 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:15:11,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:15:11,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2023-11-23 21:15:11,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103562979] [2023-11-23 21:15:11,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:15:11,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 21:15:11,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:11,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 21:15:11,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-11-23 21:15:11,382 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 10 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:11,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:11,497 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2023-11-23 21:15:11,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 21:15:11,497 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-23 21:15:11,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:11,498 INFO L225 Difference]: With dead ends: 20 [2023-11-23 21:15:11,498 INFO L226 Difference]: Without dead ends: 16 [2023-11-23 21:15:11,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2023-11-23 21:15:11,500 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:11,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 14 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:15:11,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-11-23 21:15:11,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-11-23 21:15:11,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:11,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2023-11-23 21:15:11,506 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 9 [2023-11-23 21:15:11,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:11,506 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2023-11-23 21:15:11,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:11,521 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2023-11-23 21:15:11,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 21:15:11,522 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:11,522 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2023-11-23 21:15:11,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bc0e6b-aed2-4d09-8eae-cc09388b7fe6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:15:11,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bc0e6b-aed2-4d09-8eae-cc09388b7fe6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:15:11,739 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:15:11,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:11,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1824228266, now seen corresponding path program 2 times [2023-11-23 21:15:11,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:11,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631205283] [2023-11-23 21:15:11,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:11,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:11,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:11,988 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:11,990 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:11,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631205283] [2023-11-23 21:15:11,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631205283] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:15:11,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447575582] [2023-11-23 21:15:11,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 21:15:11,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:15:11,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bc0e6b-aed2-4d09-8eae-cc09388b7fe6/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:15:11,996 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bc0e6b-aed2-4d09-8eae-cc09388b7fe6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:15:12,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bc0e6b-aed2-4d09-8eae-cc09388b7fe6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:15:12,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-23 21:15:12,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:15:12,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-23 21:15:12,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:15:12,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2023-11-23 21:15:12,740 INFO L349 Elim1Store]: treesize reduction 188, result has 20.0 percent of original size [2023-11-23 21:15:12,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 167 treesize of output 121 [2023-11-23 21:15:12,858 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-23 21:15:12,858 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:15:15,181 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-23 21:15:15,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447575582] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:15:15,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [652276598] [2023-11-23 21:15:15,184 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-23 21:15:15,184 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:15:15,184 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:15:15,184 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:15:15,185 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:15:15,509 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:15:15,950 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '298#(and (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~ad2~0#1.base|) (<= 2 |ULTIMATE.start_main_~#ad1~0#1.base|) (<= 2 |ULTIMATE.start_main_~pa~0#1.base|) (not (= |ULTIMATE.start_main_~i~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#ad1~0#1.base|) (* |ULTIMATE.start_main_~i~0#1| 8)))) (<= (select (select |#memory_int| |ULTIMATE.start_main_~pa~0#1.base|) |ULTIMATE.start_main_~pa~0#1.offset|) |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~ad2~0#1.offset| 0) (= |ULTIMATE.start_main_~#ad1~0#1.offset| 0) (= 0 |ULTIMATE.start_check_#res#1|))' at error location [2023-11-23 21:15:15,950 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:15:15,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:15:15,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-11-23 21:15:15,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660811301] [2023-11-23 21:15:15,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:15:15,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-23 21:15:15,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:15,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-23 21:15:15,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=564, Unknown=1, NotChecked=0, Total=650 [2023-11-23 21:15:15,953 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:17,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:17,200 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2023-11-23 21:15:17,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 21:15:17,200 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-23 21:15:17,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:17,201 INFO L225 Difference]: With dead ends: 20 [2023-11-23 21:15:17,201 INFO L226 Difference]: Without dead ends: 0 [2023-11-23 21:15:17,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=271, Invalid=1210, Unknown=1, NotChecked=0, Total=1482 [2023-11-23 21:15:17,203 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 13 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:17,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 3 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:15:17,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-23 21:15:17,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-23 21:15:17,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:17,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-23 21:15:17,205 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2023-11-23 21:15:17,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:17,205 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 21:15:17,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:17,205 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-23 21:15:17,205 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-23 21:15:17,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:15:17,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bc0e6b-aed2-4d09-8eae-cc09388b7fe6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:15:17,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bc0e6b-aed2-4d09-8eae-cc09388b7fe6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:15:17,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-23 21:15:17,473 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-23 21:15:17,473 INFO L899 garLoopResultBuilder]: For program point L31(lines 31 33) no Hoare annotation was computed. [2023-11-23 21:15:17,474 INFO L899 garLoopResultBuilder]: For program point L23(lines 23 34) no Hoare annotation was computed. [2023-11-23 21:15:17,474 INFO L899 garLoopResultBuilder]: For program point L23-2(lines 23 34) no Hoare annotation was computed. [2023-11-23 21:15:17,474 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-23 21:15:17,474 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 16 40) no Hoare annotation was computed. [2023-11-23 21:15:17,474 INFO L899 garLoopResultBuilder]: For program point L28-1(lines 28 30) no Hoare annotation was computed. [2023-11-23 21:15:17,475 INFO L895 garLoopResultBuilder]: At program point L28-3(lines 28 30) the Hoare annotation is: (and (let ((.cse0 (div (+ (* (- 1) |ULTIMATE.start_main_~#ad1~0#1.offset|) |ULTIMATE.start_main_~pa~0#1.offset|) 8))) (= .cse0 (select (select |#memory_int| |ULTIMATE.start_main_~#ad1~0#1.base|) (+ |ULTIMATE.start_main_~#ad1~0#1.offset| (* .cse0 8))))) (= |ULTIMATE.start_main_~pa~0#1.base| |ULTIMATE.start_main_~#ad1~0#1.base|) (= (mod (+ (* 7 |ULTIMATE.start_main_~#ad1~0#1.offset|) |ULTIMATE.start_main_~pa~0#1.offset|) 8) 0) (<= |ULTIMATE.start_main_~i~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~pa~0#1.base|) |ULTIMATE.start_main_~pa~0#1.offset|))) [2023-11-23 21:15:17,475 INFO L899 garLoopResultBuilder]: For program point L28-4(lines 28 30) no Hoare annotation was computed. [2023-11-23 21:15:17,475 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 38) no Hoare annotation was computed. [2023-11-23 21:15:17,475 INFO L899 garLoopResultBuilder]: For program point main_ERROR#1(lines 17 40) no Hoare annotation was computed. [2023-11-23 21:15:17,479 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-11-23 21:15:17,481 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:15:17,493 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~#ad1~0!base][~#ad1~0!offset + (-1 * ~#ad1~0!offset + ~pa~0!offset) / 8 * 8] could not be translated [2023-11-23 21:15:17,495 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~pa~0!base][~pa~0!offset] could not be translated [2023-11-23 21:15:17,497 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:15:17 BoogieIcfgContainer [2023-11-23 21:15:17,497 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:15:17,497 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:15:17,497 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:15:17,500 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:15:17,502 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:15:08" (3/4) ... [2023-11-23 21:15:17,504 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 21:15:17,512 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-11-23 21:15:17,513 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-23 21:15:17,513 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-23 21:15:17,513 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 21:15:17,605 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bc0e6b-aed2-4d09-8eae-cc09388b7fe6/bin/utaipan-verify-mE87zJ7Ire/witness.graphml [2023-11-23 21:15:17,605 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bc0e6b-aed2-4d09-8eae-cc09388b7fe6/bin/utaipan-verify-mE87zJ7Ire/witness.yml [2023-11-23 21:15:17,606 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:15:17,606 INFO L158 Benchmark]: Toolchain (without parser) took 9632.02ms. Allocated memory was 138.4MB in the beginning and 218.1MB in the end (delta: 79.7MB). Free memory was 93.4MB in the beginning and 98.3MB in the end (delta: -4.8MB). Peak memory consumption was 75.2MB. Max. memory is 16.1GB. [2023-11-23 21:15:17,606 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 102.8MB. Free memory is still 49.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:15:17,607 INFO L158 Benchmark]: CACSL2BoogieTranslator took 218.92ms. Allocated memory is still 138.4MB. Free memory was 93.1MB in the beginning and 82.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 21:15:17,607 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.22ms. Allocated memory is still 138.4MB. Free memory was 82.6MB in the beginning and 80.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:15:17,607 INFO L158 Benchmark]: Boogie Preprocessor took 23.46ms. Allocated memory is still 138.4MB. Free memory was 80.9MB in the beginning and 79.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:15:17,608 INFO L158 Benchmark]: RCFGBuilder took 317.43ms. Allocated memory is still 138.4MB. Free memory was 79.6MB in the beginning and 108.6MB in the end (delta: -29.0MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. [2023-11-23 21:15:17,608 INFO L158 Benchmark]: TraceAbstraction took 8926.01ms. Allocated memory was 138.4MB in the beginning and 218.1MB in the end (delta: 79.7MB). Free memory was 108.0MB in the beginning and 103.5MB in the end (delta: 4.5MB). Peak memory consumption was 85.2MB. Max. memory is 16.1GB. [2023-11-23 21:15:17,609 INFO L158 Benchmark]: Witness Printer took 108.32ms. Allocated memory is still 218.1MB. Free memory was 103.5MB in the beginning and 98.3MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 21:15:17,612 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 102.8MB. Free memory is still 49.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 218.92ms. Allocated memory is still 138.4MB. Free memory was 93.1MB in the beginning and 82.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.22ms. Allocated memory is still 138.4MB. Free memory was 82.6MB in the beginning and 80.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.46ms. Allocated memory is still 138.4MB. Free memory was 80.9MB in the beginning and 79.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 317.43ms. Allocated memory is still 138.4MB. Free memory was 79.6MB in the beginning and 108.6MB in the end (delta: -29.0MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. * TraceAbstraction took 8926.01ms. Allocated memory was 138.4MB in the beginning and 218.1MB in the end (delta: 79.7MB). Free memory was 108.0MB in the beginning and 103.5MB in the end (delta: 4.5MB). Peak memory consumption was 85.2MB. Max. memory is 16.1GB. * Witness Printer took 108.32ms. Allocated memory is still 218.1MB. Free memory was 103.5MB in the beginning and 98.3MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[~#ad1~0!base][~#ad1~0!offset + (-1 * ~#ad1~0!offset + ~pa~0!offset) / 8 * 8] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[~pa~0!base][~pa~0!offset] could not be translated * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 38]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.9s, OverallIterations: 4, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 34 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 109 IncrementalHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 18 mSDtfsCounter, 109 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=3, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 6 NumberOfFragments, 43 HoareAnnotationTreeSize, 1 FomulaSimplifications, 36 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 251 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 61 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 77 ConstructedInterpolants, 3 QuantifiedInterpolants, 1134 SizeOfPredicates, 15 NumberOfNonLiveVariables, 141 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 25/66 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: null RESULT: Ultimate proved your program to be correct! [2023-11-23 21:15:17,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bc0e6b-aed2-4d09-8eae-cc09388b7fe6/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 Writing output log to file Ultimate.log Result: TRUE