./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-industry-pattern/aiob_3.c --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_c52035dd-35b3-4199-8719-603bee259c94/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52035dd-35b3-4199-8719-603bee259c94/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_c52035dd-35b3-4199-8719-603bee259c94/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52035dd-35b3-4199-8719-603bee259c94/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-industry-pattern/aiob_3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52035dd-35b3-4199-8719-603bee259c94/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_c52035dd-35b3-4199-8719-603bee259c94/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 a580f4004513699e7113a3144aa7d61cbca2d2a42465d87f17daced269fc5719 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:33:04,468 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:33:04,567 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52035dd-35b3-4199-8719-603bee259c94/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 20:33:04,576 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:33:04,577 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:33:04,623 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:33:04,624 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:33:04,624 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:33:04,625 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:33:04,633 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:33:04,633 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:33:04,634 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:33:04,634 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:33:04,636 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:33:04,637 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:33:04,637 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:33:04,638 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:33:04,638 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:33:04,638 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:33:04,639 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:33:04,639 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:33:04,640 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:33:04,641 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:33:04,642 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:33:04,642 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:33:04,643 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:33:04,643 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:33:04,643 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:33:04,644 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:33:04,644 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:33:04,646 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:33:04,646 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:33:04,646 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:33:04,646 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:33:04,647 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:33:04,647 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:33:04,647 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:33:04,648 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:33:04,648 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:33:04,649 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:33:04,649 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:33:04,650 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:33:04,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:33:04,650 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:33:04,651 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:33:04,651 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:33:04,651 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:33:04,651 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_c52035dd-35b3-4199-8719-603bee259c94/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52035dd-35b3-4199-8719-603bee259c94/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a580f4004513699e7113a3144aa7d61cbca2d2a42465d87f17daced269fc5719 [2023-11-23 20:33:05,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:33:05,043 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:33:05,046 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:33:05,049 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:33:05,049 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:33:05,053 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52035dd-35b3-4199-8719-603bee259c94/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/loop-industry-pattern/aiob_3.c [2023-11-23 20:33:08,253 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:33:08,505 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:33:08,509 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52035dd-35b3-4199-8719-603bee259c94/sv-benchmarks/c/loop-industry-pattern/aiob_3.c [2023-11-23 20:33:08,525 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52035dd-35b3-4199-8719-603bee259c94/bin/utaipan-verify-mE87zJ7Ire/data/0fbf70939/308628cf66f64b7983f1c13d95828f8c/FLAG0355c2e0e [2023-11-23 20:33:08,539 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52035dd-35b3-4199-8719-603bee259c94/bin/utaipan-verify-mE87zJ7Ire/data/0fbf70939/308628cf66f64b7983f1c13d95828f8c [2023-11-23 20:33:08,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:33:08,543 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:33:08,545 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:33:08,545 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:33:08,551 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:33:08,552 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:33:08" (1/1) ... [2023-11-23 20:33:08,553 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29054841 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:08, skipping insertion in model container [2023-11-23 20:33:08,554 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:33:08" (1/1) ... [2023-11-23 20:33:08,591 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:33:08,968 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_c52035dd-35b3-4199-8719-603bee259c94/sv-benchmarks/c/loop-industry-pattern/aiob_3.c[7657,7670] [2023-11-23 20:33:08,978 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:33:08,990 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:33:09,082 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_c52035dd-35b3-4199-8719-603bee259c94/sv-benchmarks/c/loop-industry-pattern/aiob_3.c[7657,7670] [2023-11-23 20:33:09,083 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:33:09,091 WARN L675 CHandler]: The function fopen is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:33:09,100 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:33:09,100 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:09 WrapperNode [2023-11-23 20:33:09,101 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:33:09,102 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:33:09,102 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:33:09,102 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:33:09,110 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:09" (1/1) ... [2023-11-23 20:33:09,127 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:09" (1/1) ... [2023-11-23 20:33:09,177 INFO L138 Inliner]: procedures = 20, calls = 243, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 352 [2023-11-23 20:33:09,178 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:33:09,179 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:33:09,179 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:33:09,179 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:33:09,206 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:09" (1/1) ... [2023-11-23 20:33:09,206 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:09" (1/1) ... [2023-11-23 20:33:09,215 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:09" (1/1) ... [2023-11-23 20:33:09,215 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:09" (1/1) ... [2023-11-23 20:33:09,238 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:09" (1/1) ... [2023-11-23 20:33:09,241 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:09" (1/1) ... [2023-11-23 20:33:09,245 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:09" (1/1) ... [2023-11-23 20:33:09,248 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:09" (1/1) ... [2023-11-23 20:33:09,254 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:33:09,255 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:33:09,255 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:33:09,255 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:33:09,256 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:09" (1/1) ... [2023-11-23 20:33:09,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:33:09,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52035dd-35b3-4199-8719-603bee259c94/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:33:09,297 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52035dd-35b3-4199-8719-603bee259c94/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:33:09,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52035dd-35b3-4199-8719-603bee259c94/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:33:09,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 20:33:09,355 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2023-11-23 20:33:09,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 20:33:09,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:33:09,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:33:09,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:33:09,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:33:09,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:33:09,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:33:09,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:33:09,486 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:33:09,489 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:33:10,016 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:33:10,043 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:33:10,044 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 20:33:10,047 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:33:10 BoogieIcfgContainer [2023-11-23 20:33:10,047 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:33:10,051 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:33:10,051 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:33:10,055 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:33:10,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:33:08" (1/3) ... [2023-11-23 20:33:10,057 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c9f2e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:33:10, skipping insertion in model container [2023-11-23 20:33:10,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:09" (2/3) ... [2023-11-23 20:33:10,059 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c9f2e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:33:10, skipping insertion in model container [2023-11-23 20:33:10,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:33:10" (3/3) ... [2023-11-23 20:33:10,062 INFO L112 eAbstractionObserver]: Analyzing ICFG aiob_3.c [2023-11-23 20:33:10,083 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:33:10,084 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:33:10,143 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:33:10,151 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;@7d78f46e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:33:10,152 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:33:10,157 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 20:33:10,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 20:33:10,165 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:33:10,166 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-23 20:33:10,166 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:33:10,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:33:10,176 INFO L85 PathProgramCache]: Analyzing trace with hash 2096767141, now seen corresponding path program 1 times [2023-11-23 20:33:10,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:33:10,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534282585] [2023-11-23 20:33:10,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:10,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:33:10,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:10,980 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 20:33:10,981 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:33:10,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534282585] [2023-11-23 20:33:10,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534282585] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:33:10,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:33:10,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 20:33:10,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819650321] [2023-11-23 20:33:10,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:33:10,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:33:10,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:33:11,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:33:11,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:33:11,025 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 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 20:33:11,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:33:11,114 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2023-11-23 20:33:11,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 20:33:11,117 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 20:33:11,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:33:11,124 INFO L225 Difference]: With dead ends: 25 [2023-11-23 20:33:11,124 INFO L226 Difference]: Without dead ends: 12 [2023-11-23 20:33:11,127 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 20:33:11,137 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:33:11,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 14 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:33:11,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-11-23 20:33:11,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2023-11-23 20:33:11,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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 20:33:11,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-11-23 20:33:11,173 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2023-11-23 20:33:11,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:33:11,173 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-11-23 20:33:11,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 20:33:11,174 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-11-23 20:33:11,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-23 20:33:11,174 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:33:11,175 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-23 20:33:11,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:33:11,175 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:33:11,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:33:11,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1166728985, now seen corresponding path program 1 times [2023-11-23 20:33:11,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:33:11,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366222270] [2023-11-23 20:33:11,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:11,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:33:11,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:11,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:33:11,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:33:11,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366222270] [2023-11-23 20:33:11,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366222270] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:33:11,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344048433] [2023-11-23 20:33:11,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:11,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:33:11,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52035dd-35b3-4199-8719-603bee259c94/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:33:11,633 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52035dd-35b3-4199-8719-603bee259c94/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:33:11,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52035dd-35b3-4199-8719-603bee259c94/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 20:33:11,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:11,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 20:33:11,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:33:11,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:33:12,000 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:33:12,062 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:33:12,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344048433] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:33:12,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1533218360] [2023-11-23 20:33:12,089 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-23 20:33:12,089 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:33:12,093 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:33:12,100 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:33:12,101 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 20:33:20,611 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 20:33:21,309 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '123#(and (= |ULTIMATE.start_main_~Id_MCDC_121~0#1| 0) (<= 2 |ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_100~0#1.base|) (= |ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_100~0#1.offset| 0) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~#Id_MCDC_125~0#1.offset| 0) (<= 2 |ULTIMATE.start_Id_MCDC_95_#in~Id_MCDC_94#1.base|) (<= 2 |ULTIMATE.start_main_~#Id_MCDC_125~0#1.base|) (<= 2 |ULTIMATE.start_Id_MCDC_95_~Id_MCDC_94#1.base|) (<= 0 |ULTIMATE.start_Id_MCDC_95_~Id_MCDC_102~0#1|) (= |ULTIMATE.start_main_~Id_MCDC_122~0#1| 0) (= |ULTIMATE.start_Id_MCDC_95_~Id_MCDC_94#1.offset| 0) (= |ULTIMATE.start_Id_MCDC_95_#in~Id_MCDC_94#1.offset| 0) (<= 0 ~Id_MCDC_99~0) (= |ULTIMATE.start___VERIFIER_assert_~Id_MCDC_98#1| 0) (<= 2 |ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_#in~Id_MCDC_98#1| 0) (= |ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 0))' at error location [2023-11-23 20:33:21,310 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 20:33:21,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 20:33:21,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-11-23 20:33:21,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995115341] [2023-11-23 20:33:21,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 20:33:21,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 20:33:21,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:33:21,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 20:33:21,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-11-23 20:33:21,317 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 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 20:33:21,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:33:21,465 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2023-11-23 20:33:21,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 20:33:21,466 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 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 10 [2023-11-23 20:33:21,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:33:21,467 INFO L225 Difference]: With dead ends: 26 [2023-11-23 20:33:21,467 INFO L226 Difference]: Without dead ends: 24 [2023-11-23 20:33:21,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-11-23 20:33:21,469 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 14 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:33:21,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 10 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:33:21,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-23 20:33:21,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2023-11-23 20:33:21,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 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 20:33:21,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2023-11-23 20:33:21,481 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 10 [2023-11-23 20:33:21,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:33:21,482 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2023-11-23 20:33:21,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 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 20:33:21,483 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2023-11-23 20:33:21,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-23 20:33:21,484 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:33:21,485 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1] [2023-11-23 20:33:21,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52035dd-35b3-4199-8719-603bee259c94/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 20:33:21,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52035dd-35b3-4199-8719-603bee259c94/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:33:21,688 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:33:21,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:33:21,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1230569867, now seen corresponding path program 2 times [2023-11-23 20:33:21,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:33:21,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811407061] [2023-11-23 20:33:21,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:21,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:33:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:22,095 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:33:22,096 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:33:22,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811407061] [2023-11-23 20:33:22,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811407061] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:33:22,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065142544] [2023-11-23 20:33:22,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 20:33:22,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:33:22,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52035dd-35b3-4199-8719-603bee259c94/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:33:22,098 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52035dd-35b3-4199-8719-603bee259c94/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:33:22,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52035dd-35b3-4199-8719-603bee259c94/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 20:33:22,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-23 20:33:22,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 20:33:22,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-23 20:33:22,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:33:22,652 INFO L349 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2023-11-23 20:33:22,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 56 [2023-11-23 20:33:22,892 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-23 20:33:22,892 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:33:23,562 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-23 20:33:23,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065142544] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:33:23,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [807047549] [2023-11-23 20:33:23,565 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-23 20:33:23,565 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:33:23,565 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:33:23,566 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:33:23,566 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 20:33:31,310 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 20:33:32,093 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '343#(and (= |ULTIMATE.start_main_~Id_MCDC_121~0#1| 0) (<= 2 |ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_100~0#1.base|) (= |ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_100~0#1.offset| 0) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~#Id_MCDC_125~0#1.offset| 0) (<= 2 |ULTIMATE.start_Id_MCDC_95_#in~Id_MCDC_94#1.base|) (<= 2 |ULTIMATE.start_main_~#Id_MCDC_125~0#1.base|) (<= 2 |ULTIMATE.start_Id_MCDC_95_~Id_MCDC_94#1.base|) (<= 0 |ULTIMATE.start_Id_MCDC_95_~Id_MCDC_102~0#1|) (= |ULTIMATE.start_main_~Id_MCDC_122~0#1| 0) (= |ULTIMATE.start_Id_MCDC_95_~Id_MCDC_94#1.offset| 0) (= |ULTIMATE.start_Id_MCDC_95_#in~Id_MCDC_94#1.offset| 0) (<= 0 ~Id_MCDC_99~0) (= |ULTIMATE.start___VERIFIER_assert_~Id_MCDC_98#1| 0) (<= 2 |ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_#in~Id_MCDC_98#1| 0) (= |ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 0))' at error location [2023-11-23 20:33:32,094 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 20:33:32,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 20:33:32,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-11-23 20:33:32,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5846478] [2023-11-23 20:33:32,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 20:33:32,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-23 20:33:32,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:33:32,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-23 20:33:32,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2023-11-23 20:33:32,100 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 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 20:33:32,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:33:32,748 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2023-11-23 20:33:32,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-23 20:33:32,749 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 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 22 [2023-11-23 20:33:32,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:33:32,749 INFO L225 Difference]: With dead ends: 30 [2023-11-23 20:33:32,749 INFO L226 Difference]: Without dead ends: 0 [2023-11-23 20:33:32,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=382, Invalid=1598, Unknown=0, NotChecked=0, Total=1980 [2023-11-23 20:33:32,758 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 32 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:33:32,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 2 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 20:33:32,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-23 20:33:32,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-23 20:33:32,769 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 20:33:32,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-23 20:33:32,769 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2023-11-23 20:33:32,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:33:32,770 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 20:33:32,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 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 20:33:32,772 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-23 20:33:32,772 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-23 20:33:32,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 20:33:32,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52035dd-35b3-4199-8719-603bee259c94/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-23 20:33:32,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52035dd-35b3-4199-8719-603bee259c94/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:33:32,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-23 20:33:33,055 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-23 20:33:33,056 INFO L899 garLoopResultBuilder]: For program point L178(lines 178 181) no Hoare annotation was computed. [2023-11-23 20:33:33,056 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-23 20:33:33,056 INFO L899 garLoopResultBuilder]: For program point L189(line 189) no Hoare annotation was computed. [2023-11-23 20:33:33,056 INFO L899 garLoopResultBuilder]: For program point L187(lines 187 190) no Hoare annotation was computed. [2023-11-23 20:33:33,056 INFO L899 garLoopResultBuilder]: For program point L187-2(lines 185 192) no Hoare annotation was computed. [2023-11-23 20:33:33,056 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 189) no Hoare annotation was computed. [2023-11-23 20:33:33,056 INFO L899 garLoopResultBuilder]: For program point L150(lines 150 184) no Hoare annotation was computed. [2023-11-23 20:33:33,056 INFO L899 garLoopResultBuilder]: For program point L144-1(lines 144 148) no Hoare annotation was computed. [2023-11-23 20:33:33,056 INFO L895 garLoopResultBuilder]: At program point L144-3(lines 144 148) the Hoare annotation is: (let ((.cse0 (= (select (select |#memory_int| |ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.base|) 492) 0)) (.cse2 (= |ULTIMATE.start_Id_MCDC_95_~#Id_MCDC_101~0#1.offset| 0))) (or (let ((.cse1 (mod (+ |ULTIMATE.start_Id_MCDC_95_~Id_MCDC_102~0#1| 4294967295) 4294967296))) (and .cse0 (not (= 41 .cse1)) (<= .cse1 41) .cse2)) (and .cse0 (= |ULTIMATE.start_Id_MCDC_95_~Id_MCDC_102~0#1| 0) .cse2))) [2023-11-23 20:33:33,057 INFO L899 garLoopResultBuilder]: For program point L144-4(lines 144 148) no Hoare annotation was computed. [2023-11-23 20:33:33,059 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2023-11-23 20:33:33,061 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 20:33:33,071 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~#Id_MCDC_101~0!base][492] could not be translated [2023-11-23 20:33:33,074 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~#Id_MCDC_101~0!base][492] could not be translated [2023-11-23 20:33:33,075 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 08:33:33 BoogieIcfgContainer [2023-11-23 20:33:33,075 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 20:33:33,076 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:33:33,076 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:33:33,076 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:33:33,077 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:33:10" (3/4) ... [2023-11-23 20:33:33,079 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 20:33:33,092 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2023-11-23 20:33:33,093 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-11-23 20:33:33,094 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-23 20:33:33,095 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 20:33:33,096 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 20:33:33,422 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52035dd-35b3-4199-8719-603bee259c94/bin/utaipan-verify-mE87zJ7Ire/witness.graphml [2023-11-23 20:33:33,422 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52035dd-35b3-4199-8719-603bee259c94/bin/utaipan-verify-mE87zJ7Ire/witness.yml [2023-11-23 20:33:33,422 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:33:33,423 INFO L158 Benchmark]: Toolchain (without parser) took 24879.62ms. Allocated memory was 182.5MB in the beginning and 889.2MB in the end (delta: 706.7MB). Free memory was 137.3MB in the beginning and 444.6MB in the end (delta: -307.3MB). Peak memory consumption was 401.5MB. Max. memory is 16.1GB. [2023-11-23 20:33:33,423 INFO L158 Benchmark]: CDTParser took 2.44ms. Allocated memory is still 117.4MB. Free memory is still 65.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:33:33,424 INFO L158 Benchmark]: CACSL2BoogieTranslator took 556.13ms. Allocated memory is still 182.5MB. Free memory was 137.3MB in the beginning and 119.8MB in the end (delta: 17.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-23 20:33:33,424 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.24ms. Allocated memory is still 182.5MB. Free memory was 119.8MB in the beginning and 116.6MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:33:33,424 INFO L158 Benchmark]: Boogie Preprocessor took 75.35ms. Allocated memory is still 182.5MB. Free memory was 116.6MB in the beginning and 113.0MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 20:33:33,425 INFO L158 Benchmark]: RCFGBuilder took 792.70ms. Allocated memory is still 182.5MB. Free memory was 113.0MB in the beginning and 144.4MB in the end (delta: -31.4MB). Peak memory consumption was 34.8MB. Max. memory is 16.1GB. [2023-11-23 20:33:33,425 INFO L158 Benchmark]: TraceAbstraction took 23024.16ms. Allocated memory was 182.5MB in the beginning and 889.2MB in the end (delta: 706.7MB). Free memory was 144.4MB in the beginning and 460.3MB in the end (delta: -315.9MB). Peak memory consumption was 391.9MB. Max. memory is 16.1GB. [2023-11-23 20:33:33,425 INFO L158 Benchmark]: Witness Printer took 346.52ms. Allocated memory is still 889.2MB. Free memory was 460.3MB in the beginning and 444.6MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-23 20:33:33,429 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.44ms. Allocated memory is still 117.4MB. Free memory is still 65.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 556.13ms. Allocated memory is still 182.5MB. Free memory was 137.3MB in the beginning and 119.8MB in the end (delta: 17.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.24ms. Allocated memory is still 182.5MB. Free memory was 119.8MB in the beginning and 116.6MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 75.35ms. Allocated memory is still 182.5MB. Free memory was 116.6MB in the beginning and 113.0MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 792.70ms. Allocated memory is still 182.5MB. Free memory was 113.0MB in the beginning and 144.4MB in the end (delta: -31.4MB). Peak memory consumption was 34.8MB. Max. memory is 16.1GB. * TraceAbstraction took 23024.16ms. Allocated memory was 182.5MB in the beginning and 889.2MB in the end (delta: 706.7MB). Free memory was 144.4MB in the beginning and 460.3MB in the end (delta: -315.9MB). Peak memory consumption was 391.9MB. Max. memory is 16.1GB. * Witness Printer took 346.52ms. Allocated memory is still 889.2MB. Free memory was 460.3MB in the beginning and 444.6MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[~#Id_MCDC_101~0!base][492] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[~#Id_MCDC_101~0!base][492] 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: 189]: 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: 22.9s, OverallIterations: 3, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 50 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 50 mSDsluCounter, 26 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 204 IncrementalHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 9 mSDtfsCounter, 204 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=2, InterpolantAutomatonStates: 38, 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, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 8 NumberOfFragments, 41 HoareAnnotationTreeSize, 1 FomulaSimplifications, 17 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 85 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 70 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 95 ConstructedInterpolants, 13 QuantifiedInterpolants, 974 SizeOfPredicates, 16 NumberOfNonLiveVariables, 1116 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 33/117 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: 144]: Loop Invariant Derived loop invariant: ((!((41 == ((Id_MCDC_102 + 4294967295) % 4294967296))) && (((Id_MCDC_102 + 4294967295) % 4294967296) <= 41)) || (Id_MCDC_102 == 0)) RESULT: Ultimate proved your program to be correct! [2023-11-23 20:33:33,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52035dd-35b3-4199-8719-603bee259c94/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